02 03 10 CONCRETE CURING MATERIALS
2.10
CURING MATERIALS A. Evaporation Retarder: Waterborne, monomolecular film forming, manufactured for application to fresh concrete 1. Available Products: a. Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company; Aquafilm. b. Dayton Superior Corporation; Sure Film. c. Euclid Chemical Company (The); Eucobar. d. L&M Construction Chemicals, Inc.; E-Con. e. Meadows, W.R., Inc.; Sealtight Evapre. f. Sika Corporation, Inc.; SikaFilm. g. Symons Corporation, a Dayton Superior Company; Finishing Aid B. Absorptive Cover: AASHTO M 192, Class 2, burlap cloth made from jute or Kenaf, weighing approximately 9 oz. /sq. yd. when dry. Moisture-Retaining cover: burlap-polyethylene sheet. ASTM C 171, polyethylene film or white
C.
D. Water: Potable. E. Clean, Waterborne, Membrane-Forming Curing Compound: ASTM C 309, Type 1, Class B, dissipating. 1. Available Products: a. b. c. d. e. f. g. Anti-Hydro International, Inc.; AH Curing Compound #2 DR WB. Conspec Marketing & Manufacturing Co. Inc. a Dayton Superior Company; W.B. Resin Cure. Dayton Superior Corporation; Day Chem Rez Cure (J-11W). Euclid Chemical Company (The); Kurez DR VOX. L&M Construction Chemicals, Inc.; L&M Cure. R. Meadows, W.R., Inc.; 1100 Clear. Symons Corporation, a Dayton Superior Company; ResiChem Clear Cure.
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Concrete Curing Materials
F. Clear, Waterborne, Membrane-Forming Curing and Sealing Compound: ASTM C 1315, Type 1, Class A. 1. Available Products: a. b. c. d. e. Conspec Marketing & Manufacturing Co., Inc., a Dayton Superior Company; Sealcure 1315 WB Euclid Chemical Company (The); Super Diamond Clear VOX. L&L Construction Chemicals, Inc.; Lumiseal WB Plus. Meadows, W.R., Inc.; Vocomp-30. Symons Corporation, a Dayton Superior Company; Cure & Seal 31 Percent E.
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Concrete Curing Materials
SECTION 03050 CAST-IN-PLACE CONCRETE PART 1 GENERAL 1.01 SECTION INCLUDES A. Mortar for unit masonry and stone veneer. 1.02 RELATED SECTIONS A. Fibrous Reinforcement: Section 03240. B. Vapor Barrier Under Slabs on Grade: Section 072611.03 REFERENCES
A. Except as shown or specified otherwise, the Work of this Section shall conform to the requirements of Specifications for Structural Concrete for Buildings ACI 301-99 of the American Concrete Institute. 1.04 SUBMITTALS A. Submittals Package: Submit product data for design mix(es) and materials for concrete specified below at the same time as a package. B. C. Shop Drawings: Placing drawings for bar reinforcement. Product Data: 1. Concrete design mix(es) with name and location of batching plant. 2. Portland Cement: Brand and manufacturer's name. 3. Fly Ash: Name and location of source, and DOT test numbers. 4. Air-entraining Admixture: Brand and manufacturer's name. 5. Water-reducing Admixture: Brand and manufacturer's name. 6. Aggregates: Name and location of source, and DOT test numbers. 7. Lightweight Coarse Aggregate: Brand and manufacturer's name 8. Chemical Hardener (Dustproofing): Brand and manufacturer's name, and application instructions. 9. Chemical Curing and Anti-Spalling Compound: Brand and manufacturer's name, and application instructions. 10. Bonding Agent (Adhesive): Brand and manufacturer's name, and preparation and application instructions. 11. Expansion Joint Filler: Brand and manufacturer's name. 12. Emery Aggregate: Brand and manufacturer's name, and application instructions. D. Samples: 1. Fabric Reinforcement: 8 inches square. 2. Bar Supports: Full size. Quality Control Submittals: 1. Certificates: Affidavit required under Quality Assurance Article. 03 05 00 - 1 Concrete
E.
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1.05 QUALITY ASSURANCE A. Concrete batching plant shall be currently approved as a concrete supplier by the New York State Department of Transportation. B. Fly ash supplier shall be currently approved as a fly ash supplier by the New York State Department of Transportation. Certifications: Affidavit by the bar reinforcement manufacturer certifying that bar material meets the contract requirements. Source Quality Control: The Director reserves the right to inspect and approve the following items, at his own discretion, either with his own forces or with a designated inspection agency: 1. Batching and mixing facilities and equipment. 2. Sources of materials.
C.
D.
1.06 STORAGE A. Store materials so as to insure the preservation of their quality and fitness for the Work. Materials, even though accepted prior to storage, are subject to inspection and shall meet the requirements of the Contract before their use in the Work.
PART 2 PRODUCTS 2.01 MATERIALS(AMENDMENTS TO ACI 301, SECTION 4, FOR NORMAL WEIGHT CONCRETE AND SECTION 7, FOR LIGHTWEIGHT CONCRETE): A. Water-reducing Admixture: ASTM C 494, Type A, and on the New York State Department of Transportation's current "Approved List". B. Fly Ash: ASTM C 618, including Table 1A (except for footnote A), Class F except that loss on ignition shall not exceed 4.0 percent. Chemical Curing and Anti-Spalling Compound: ASTM C-309, Type 1D, Class B, with a minimum 18 percent total solids content. No thinning of material allowed. 1. SureCure Emulsion, Kaufman Products, Inc. 3811 Curtis Avenue, Baltimore, MD 21226, [phone]. 2. Cure & Seal by Symons Corp., 200 East Touhy Ave., PO Box 5018, Des Plaines, IL 60017-5018, [phone]. "Kure N Seal W" by Sonneborn Building Products, Chemrex, Inc., 889 Valley Park Dr., Shakopee, MN 55379, [phone].
C.
3.
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Concrete
4.
Day-Chem Cure & Seal 26 percent (J-22) by Dayton Superior Corp., 721 Richard St., Miamisburg, OH 45342, [phone].
5.
Acrylseal HS by Master Builders, Inc., 23700 Chagrin Blvd., Cleveland, OH 44122, [phone].
D.
6.
Chemical Hardener (Dustproofing): Colorless aqueous solution of magnesium-zinc fluosilicate. Approved products include: 1. Lapidolith by Sonneborn Building Products, Chemrex, Inc., 889 Valley Park Dr., Shakopee, MN 55379, [phone]. 2. Surfhard by The Euclid Chemical Co., 19218 Redwood Rd., Cleveland, OH 44110, [phone]. 3. Pena-Lith by W.R. Meadows, Inc., PO Box 543, Elgin, IL 60121, [phone]. 4. FluoHard by L & M Construction Chemicals, Inc., 14851 Calhoun Rd., Omaha, NE 68152, [phone]. 5. Armortop by Anti Hydro International, Inc., 265 Badger Ave., Newark, NJ 07108, [phone]. Diamond by Kaufman Products, Inc., 3811 Curtis Avenue, Baltimore, MD 21226, [phone].
E.
Type 1 Expansion Joint Filler: Preformed, resilient, non-extruding cork units; ASTM D 1752, Type II. Type 2 Expansion Joint Filler: Preformed, resilient, non-extruding, selfexpanding cork units; ASTM D 1752, Type III. Type 3 Expansion Joint Filler: Preformed, resilient, non-extruding bituminous units; ASTM D 1751. Chamfer Strips: Wood, metal, PVC or rubber; one inch chamfer. Epoxy Bonding Agent (Adhesive): 100 percent solids epoxy-resin-base bonding compound, complying with ASTM C 881, Types I, II, IV and V, Grade 2 (horizontal areas) or Grade 3 (overhead/vertical areas), and Class B (40-60 degrees Fahrenheit) or Class C (60 degree Fahrenheit and above). 1. SurePoxy HM Series by Kaufman Products, Inc., 3811 Curtis Avenue, Baltimore, MD 21226, [phone]. 2. Sikadur Hi-Mod 32 by Sika Corporation, 201 Polito Avenue, Lyndhurst, NJ 07071, [phone]. 03 05 00 - 3 Concrete
F.
G.
H. I.
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3.
Epogrip by Sonneborn-Chemrex, 889 Valley Park Drive, Shakopee, MN 55379, [phone] J. Emery Aggregate: Natural emery, crushed, polyhedral in shape, with not more than 10 percent flat or elongated pieces, properly screened, graded and packaged in the manufacturer's plant, and delivered to the site in sealed, labeled packages. Approved products include: 1. Emerundum by Anti Hydro International, Inc., 265 Badger Ave., Newark, NJ 07108, [phone]. 2. Non-Slip Aggregate by Setcon Industries, Inc., 5 Mathews Ave., Riverdale, NJ 07457-1020, [phone]. 3. Frictex H by Sonneborn Building Products, Chemrex, Inc., 889 Valley Park Dr., Shakopee, MN 55379, [phone].
2.02 PROPORTIONING (AMENDMENTS TO ACI 301, SECTIONS 4 & 7):A. MORTAR FOR LOAD BEARING WALLS AND PARTITIONS: ASTM C270, TYPE S, USING PROPORTION METHOD. A. Compressive Strength: Minimum 3000 psi, unless shown or specified otherwise. 1. Minimum 4000 psi for garage floor slabs, and exterior slabs, ramps and stairs. B. Weight: Normal, except as indicated below: 1. Lightweight Concrete (for floor fills): Air-dry unit weight between 95 and 115 lb/cu ft. Durability: Concrete shall be air-entrained. Design air content shall be 6 percent by volume, with an allowable tolerance of plus or minus 1.5 percent for total air content. Entrained air shall be provided by use of an approved air-entraining admixture. Air-entrained cement shall not be used. Slump: 1. 2. 3. E. F. 3000 psi Normal Weight Concrete: Between 2 inches and 4 inches. 4000 psi Normal Weight Concrete: Between 2 inches and 3 inches. Lightweight Concrete: Between 1 inch and 4 inches.
C.
D.
Admixtures: Do not use admixtures in concrete unless specified or approved in writing by the Director. Selection of Proportions: Concrete proportions shall be established on the basis of previous field experience or laboratory trial batches, unless otherwise approved in writing by the Director. Proportion mix with a minimum cement content of 564 pounds per cubic yard for 3000 psi concrete and 611 pounds per cubic yard for 4000 psi concrete. 1. Optional Material: Fly ash may be substituted for (Portland) cement in normal weight concrete up to a maximum of 15 percent by weight of the required 03 05 00 - 4 Concrete
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minimum (Portland) cement. If fly ash is incorporated in a concrete design mix, make necessary adjustments to the design mix to compensate for the use of fly ash as a partial replacement for (Portland) cement. a. Adjustments shall include the required increase in air-entraining admixture to provide the specified air content. b. Lower early strength of the concrete shall be considered in deciding when to remove formwork. 2.03 REINFORCEMENT (AMENDMENTS TO ACI 301, SECTION 3): A. Bar Reinforcement: ASTM A 615, Grade 60, deformed steel bars. B. Fabric Reinforcement: ASTM A 185, welded wire fabric, fabricated into flat sheets unless otherwise indicated. Bar Supports: Galvanized steel or AISI Type 430 stainless steel, and without plastic tips. Tie Wire: Black annealed wire, 16-1/2 gage or heavier.
C.
D.
2.04 JOINTS AND EMBEDDED ITEMS (AMENDMENTS TO ACI 301, SECTION 5.3.2.6): A. OBTAIN BOND AT CONSTRUCTION JOINTS BY THE USE OF BONDING AGENT (ADHESIVE) OR THE USE OF CEMENT GROUT.
2.05
PRODUCTION (AMENDMENTS TO ACI 301, SECTION 5): A. Provide ready-mixed concrete, either central-mixed or truck-mixed.
PART 3 EXECUTION 3.01 EXAMINATION AND PREPARATION A. Do not use items of aluminum for mixing, chuting, conveying, forming or finishing concrete, except magnesium alloy tools may be used for finishing. B. Keep excavations free of water. Do not deposit concrete in water.
C. Hardened concrete, reinforcement, forms, and earth which will be in contact with fresh concrete shall be free from frost at the time of concrete placement. D. Prior to placement of concrete, remove all hardened concrete spillage and foreign materials from the space to be occupied by the concrete. Elderly Apartment / 04-28-06 03 05 00 - 5 Concrete
. 3.02 FORMWORK (AMENDMENTS TO ACI 301, SECTION 2): A. 3.03 Chamfer all exposed external corners of concrete.
PLACING REINFORCEMENT (Amendments to ACI 301, Section 3): A. At the time concrete is placed, reinforcement shall be free of mud, oil, loose rust, loose mill scale, and other materials or coatings that may adversely affect or reduce the bond.
3.04
PLACING CONCRETE (Amendments to ACI 301, Section 5): A. Operation of truck mixers and agitators and discharge limitations shall conform to the requirements of ASTM C 94. Do not allow concrete to free fall more than 4 feet.
B. 3.05
FINISHING FORMED SURFACES (Amendments to ACI 301, Section 5.3.3): A. Finish Schedule: Except where indicated otherwise on the Drawings, provide the finishes below: 1. Rough Form Finish for concrete surfaces not exposed to view. 2. Smooth Form Finish for concrete surfaces exposed to view. 3. Smooth Rubbed Finish for exterior concrete surfaces exposed to view. 4. Grout Cleaned Finish for interior concrete surfaces exposed to view.
3.06
FINISHING SLABS (Amendments to ACI 301, Section 5.3.4): A. Slabs On Grade: Provide key type joints unless otherwise shown. Tool exposed joints.
B. 1.
2.
Finish Schedule: Except where indicated otherwise on the Drawings, provide the finishes below: Floated Finish for: a. Treads and platforms of exterior steps and stairs. b. Slabs and fill over which waterproofing, roofing, vapor barrier, insulation, terrazzo, or resin bound flooring is required. Troweled Finish for: a. Interior slabs that are to be exposed to view. b. Slabs and fill over which resilient wood flooring, resilient tile or sheet flooring, carpet, or thin-film coating system is required. c. Slabs and fill over which thin-set ceramic tile is required, except fine-broom finished surface. 03 05 00 - 6 Concrete
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3.
4.
5.
d. Treads and platforms of interior steps and stairs. Broom or Belt Finish for: a. Exterior slabs. Texture, as approved by the Director's Representative. Scratched Finish for: a. Surfaces to be covered with ceramic tile set in a bonded thick mortar bed, except screed to a Class B tolerance. b. Surfaces to be covered with floor topping. Integral Emery Aggregate Surfacing with Floated Finish for: a. Interior pedestrian ramps.
C.
Finishing, General: Provide monolithic finishes on concrete floors and slabs without the addition of mortar or other filler material. Finish surfaces in true planes, true to line, with particular care taken during screeding to maintain an excess of concrete in front of the screed so as to prevent low spots. Screed and darby concrete to true planes while plastic and before free water rises to the surface. Do not perform finishing operations during the time free water (bleeding) is on the surface. Integral Emery Aggregate Surfacing: Provide a nonslip "dry shake" finish with emery aggregate. Apply emery aggregate in accordance with the manufacturer's printed application instructions for a moderate duty nonslip surface, unless otherwise indicated.
D.
3.07
CURING AND PROTECTION (Amendments to ACI 301, Section 5.3.6): Maintain concrete surfaces in a moist condition for at least 7 days after placing, except where otherwise indicated. Do not use curing compound. For surfaces of exterior slabs (on grade), apply chemical curing and antispalling compound in accordance with the recommendations of the manufacturer. A.
1.
3.08
CHEMICAL HARDENER (DUSTPROOFING) A. Apply chemical hardener to all troweled finished interior floors which are to be left exposed. Do not apply chemical hardener until concrete has cured the number of days recommended in manufacturer's instructions. Prepare surfaces and apply chemical hardener in accordance with manufacturer's printed instructions and recommendations.
B.
C.
3.09
FIELD QUALITY CONTROL (Amendments to ACI 301, Section 1):
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Concrete
A.
Make available to the Director's Representatives whatever test samples are required to make tests. Furnish shipping boxes for compression test cylinders. END OF SECTION
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Concrete
SECTION 03 11 00 CONCRETE FORMING
PART 1 - GENERAL 1.01 SECTION INCLUDES A. Layout of formwork. B. Formwork construction. C. Embedded items and openings in concrete. D. Form release materials. E. Removal of forms. F. Field quality control. G. Detection of movement. H. Re-use of forms. 1.02 RELATED SECTIONS A. Falsework for concrete structures is specified in Section 03 11 14 Falsework. Coordinate formwork supported by falsework with the requirements of Section 03 11 14. B. Finishes for formed surfaces are specified in Section 03 35 00 - Concrete Finishing. 1.03 MEASUREMENT AND PAYMENT A. Measurement: Concrete formwork will not be measured separately for payment. B. Payment: Concrete formwork will be paid for as part of the indicated Contract unit price or lump-sum price for the associated cast-in-place concrete work as indicated in the Bid Schedule of the Bid Form. 1.04 REFERENCES A. American Concrete Institute (ACI): 1. ACI 117 Standard Specifications for Tolerances for Concrete Construction and Materials 2. ACI 301 Standard Specifications for Structural Concrete 3. ACI 318 Building Code Requirements for Structural Concrete
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4. ACI 347 Formwork for Concrete B. American Plywood Association (APA): 1. U.S. Product Standard PS 1 for Construction and Industrial Plywood C. Federal Specifications (FS): 1. TT-S-230 Sealing Compound: Elastomeric Type, Single Component, (for Calking, Sealing, and Glazing in Buildings and Other Structures) 2. TT-S-1543 Sealing Compound: Silicone Rubber Base (For Calking, Sealing and Glazing in Buildings and Other Structures) D. West Coast Lumber Inspection Bureau (WCLB): 1. WCLB No. 17 Standard Grading Rules 1.05 QUALITY ASSURANCE A. Formwork Standards: Unless otherwise indicated, design, construct, erect, maintain, and remove forms and related structures for concrete work in accordance with applicable requirements of ACI 301, ACI 318, and ACI 347. 1. Architectural Concrete: Forms for architectural concrete shall be designed and constructed in accordance with ACI 301. 2. Deflection: Where dead and live loads on forms will be more than 20 percent greater than the weight of the concrete, provide framing lumber of required strength, and comply with ACI 301 and ACI 347 for design of framing members. Deflection shall be kept within the herein specified tolerances. 3. Concrete Mix Design: Design of formwork shall be coordinated with the concrete mix design, as specified in Section 03 05 15 - Portland Cement Concrete, so that form materials, form surfaces, and formwork strength will produce the desired concrete tolerances and finishes.
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B. Formwork Surface Materials: Provide material and work quality which will produce clean and uniform finished surfaces within the allowable tolerances specified and which will conform with the following requirements: 1. Concrete Exposed to View: Provide material and work quality that will produce clean, smooth, and uniform concrete surfaces. Refer to Section 03 35 00 - Concrete Finishing, and ACI 301 for requirements. 2. Concrete Concealed from View: Provide material and work quality that will produce aligned concrete surfaces free of fins, honeycomb, and stains. C. Special Formwork Sections: Provide openings, offsets, sinkages, keyways, recesses, moldings, rustication strips, chamfers, blocking, screeds, bulkheads, anchorages, embedded items, and other features. Select materials and provide workmanship that will ensure indicated finishes. D. Chamfered Corners: All external corners shall be chamfered, unless otherwise indicated. E. Removal Features: Design formwork to be readily removable without impact, shock, and damage to concrete surfaces and adjacent materials. F. Tolerances for Formed Surfaces: For buildings and similar structures, comply with the requirements of ACI 301, as applicable. For those items of work or parts of the structure not covered by ACI 301, comply with the requirements of ACI 117, as applicable. Coordinate with the requirements specified in Section 03 30 00 - Cast-In-Place Concrete. 1.06 SUBMITTALS A. General: Refer to Section 01 33 00 - Submittal Procedures, and Section 01 33 23 - ShopDrawings, Product Data, and Samples, for submittal requirements and procedures. For formwork submittals involving shoring or falsework, comply with requirements specified in Section 03 11 14 - Falsework. B. Shop Drawings: Submit drawings that indicate and include the following details and requirements: 1. Forming system and method of erection with associated details.
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2. Shoring accompanied by design calculations. Include reshoring procedures. Bothdrawings and calculations shall be signed by an engineer who is currently registered as a civil or structural engineer in the State of California. Coordinate with Section 03 11 14 - Falsework. 3. Locations of construction joints in plan and elevation views. 4. Locations and sizes of conduits, openings, recesses, pipes, ducts, and other attached orembedded products. 5. Beam intersections and other conditions where concrete casting by vertical drop may be restricted. 6. Chamfer strips for corner treatment. 7. Method and schedule for removing forms and shoring. 8. Method for detecting formwork movement during concrete placement. C. Product Data: Submit manufacturers' product data for manufactured products. D. Samples: Submit form material, 12 inches by 12 inches or larger in size, for formed concrete which will be exposed in the finished work to public view. Such samples require approval of the Engineer before they may be used in the work. 1.07 DELIVERY, STORAGE, AND HANDLING A. Storage: Store form panels to prevent warpage. Protect panels from damage and contamination which could adversely affect concrete. B. Handling: Lift form panels by methods that will protect panels from damage and distortion.
1.08 JOB CONDITIONS A. Allow sufficient time between erection of forms and placing of concrete for the various trades to properly install concrete reinforcement, embedded items, sleeves, and blockouts. B. Do not apply superimposed loads to the structure until concrete has developed its specified 28-day compressive strength.
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PART 2 - PRODUCTS 2.01 MATERIALS A. Lumber: Boards and framing lumber shall be graded and grade-marked in accordance with WCLB No. 17. Provide framing lumber of required strength, conforming with the abovespecified WCLB No. 17. 1. Boards: Provide all West Coast Species, "Construction" or "Standard" Boards. Usedressed side of lumber for surface in contact with the concrete, and provide boards with dressed or tongueand-groove edges to provide tight joints to prevent mortar leakage. 2. Framing Lumber: a. Light Framing: Provide all West Coast Species, "Construction" or "Standard" Light Framing, dressed or rough. Where loads are not a factor, "Utility" Light Framing will be acceptable. b. Joists and Planks: Provide all West Coast Species, "No. 2" Structural Joists and Planks, dressed or rough. c. Beams and Stringers: Provide all West Coast Species, "Standard" Beams and Stringers or "No. 2 Structural" Beams and Stringers, dressed or rough.
B. Plywood (Plyform): Plywood shall be graded and grade-marked in accordance with U.S. Product Standard PS-1. 1. B-B Plyform: Provide Class I, EXT-APA, sanded, APA trade marked. 2. B-C Plyform: Provide Class I, EXT-APA, APA trade marked. 3. High Density Overlay (HDO) Plyform: Provide A-A, 60-60, Class I, EXT-APA, APA trade marked. 4. Thickness: As required to maintain surface smoothness without deflection, but notthinner than 5/8 inch. C. Steel Forms: Proprietary, patented, or fabricated steel forms, using standard or commercial quality, uncoated steel sheet or plate, 3/16-inch minimum thickness, for panel facings. Provide surfaces that
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will not impart corrosion residue to concrete. Include panel framing, reinforcement, and erection accessories. D. Waffle Slab Forms: Steel or reinforced plastic dome forms for two-way joist construction, smooth surface, of sizes indicated. E. Round Column Forms: Pressed or molded fiber-reinforced plastic or steel, manufactured round column forms, seamless or one-piece (one vertical seam), smooth surface, of sizes indicated. 1. Provide forms with will not deflect under pressure of concrete placement, and which will not deflect or blow off under added pressure of placement of fly-ash-modified concrete. F. Formliners for Exposed and Architectural Concrete: Thermally formed, pressed or molded fiberreinforced plastic (FRP), ABS alloy plastic, PVC alloy plastic, or similar material, manufactured to produce finished concrete of design, configuration, and surface textureindicated. Fromliners shall be continuous, one piece. No horizontal joints shall be acceptable unless the applicable height exceeds the available formliner height. Provide formliners with inherent form-release surface. Formliners may be manufactured for single-use or multi-use service as appropriate. G. Leakage Control Materials: Provide materials capable of producing flush, watertight, and nonabsorbent surfaces and joints, and compatible with forming material and concreteingredients. Seal form edges with gasketing material or sealant placed in the joint in such a way that neither a fin nor groove is made in the face of the cast concrete. 1. Calking Compound: Silicone or polyurethane construction sealant conforming to FS TTS- 230 or TT-S-1543, as applicable. 2. Tapes: Form film tape of polypropylene plastic treated with waterproof adhesive, for joint conditions not exposed to public view. H. Form Release Agent: Commercial formulation, silicone-free form-release agent, designed for use on all types of forms, which will not bond with, stain, nor adversely affect concrete surfaces, and which will not impair subsequent treatment of concrete surfaces requiring bond or adhesion nor impede wetting of surfaces which will be cured with water, steam, or curing compounds.
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I. Plugged Cone Form Ties: Rod type, with ends or end fasteners which can be removed without spalling the concrete and which leave a hole equal in depth to the required reinforcement clearance. Form ties shall be of a design in which the hole left by the removed end or end fastener is easily filled to match the surface of the hardened concrete. Provide removable cones 1-1/4 inches in diameter by 1-1/2 inches deep. Provide preformed mortar plugs to match the color of the concrete, recessed 1/4 inch, adhered with an approved epoxy adhesive. J. Inserts: Cast stainless steel or welded stainless steel, Type 316 or similar 300 Series, complete with anchors to concrete and fittings such as bolts, wedges, and straps. Provide hanger inserts spaced to match grid of suspended ceiling.
K. Dovetail Anchor Slots: 22 gage or heavier galvanized steel dovetail anchor slots, for anchoring of masonry veneer with galvanized steel dovetail anchors provided under Division 4, Masonry. L. Chamfer Strips: 3/4 inch by 3/4 inch triangular fillets milled from clear, straight-grain pine, surfaced each side, or extruded vinyl type with or without nailing flange. M. Miscellaneous Joint Strips: Preformed strips for reveals, rustications, and similar joints fabricated of wood, metal, or plastic. N. Waterstops: Refer to Section 03 15 13 - Waterstops, for requirements. 2.02 FABRICATION A. Formwork - General: Fabricate forms in accordance with approved Shop Drawings. Maintain forms clean, smooth, and free from imperfections and distortion. Fabricate forms for architectural concrete in accordance with applicable requirements of ACI 301. B. Joints: 1. Arrange form panels in symmetrical patterns conforming to general lines of the structure. 2. Unless otherwise indicated, orient panels on vertical surfaces with long dimension horizontal, and make horizontal joints level and continuous. 3. Align form panels on each side of the panel joint with fasteners common to both panels, and in a manner which will result in a continuous, unbroken concrete plane surface.
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C. Steel Forms: Use material which is clean, smooth, and free from warps, bends, kinks, rust,cracks, and matter which may stain concrete. Fabricate panels in accordance with approvedShop Drawings. Deflection between form supports from concrete placement shall not exceed1/240 of the span length. PART 3 - EXECUTION 3.01 LAYOUT OF FORMWORK A. Locate and stake out all forms and establish all lines, levels, and elevations. 3.02 CONSTRUCTION A. Formwork: 1. Construct formwork in accordance with the approved Shop Drawings, and in a manner that will produce finished concrete surfaces conforming to indicated design and within specified tolerances. Formwork for concrete not exposed to view in the finished work may be constructed of any material that will adequately support the weight of the concrete. 2. Make joints and seams mortar-tight. Install leakage control materials in accordance with the manufacturer's installation instructions, and in a manner that will maintain a smooth continuity of plane between abutting form panels and which will resist displacement by concreting operations. 3. Kerf wood inserts for forming keyways, reglets, and recesses in a manner that will prevent swelling and ensure ease of removal. 4. Maintain forms clean and free from indentations and warpage. Do not use rust-stained steel surfaces for forms in contact with concrete. Do not sandblast steel form surfaces to remove rust or mill scale; remove these imperfections by grinding. 5. Brace temporary closures to prevent warpage or displacement and set tightly against forms in a manner that will prevent loss of concrete mortar. 6. Support joints with extra studs or girts, and in a manner that will ensure true, square intersections. 7. Assemble forms in a manner that will facilitate their removal without damage to the concrete.
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8. Construct molding shapes, recesses, and projections with smooth finish materials and install in forms with sealed joints. 9. Provide camber in formwork as required to compensate for deflections caused by weight and pressures of fresh concrete and construction loads and as otherwise indicated. Provide camber strips to compensate for deflections due to permanent loads and longterm deflections due to shrinkage and creep as required. 10. Provide construction openings in forms where required for concrete pour pockets, vibrator access holes, and inspection openings to aid in proper placement and consolidation of concrete, and close up openings during placement of concrete as applicable. 11. Provide inspection and cleanout openings in forms at bottom of walls and columns and elsewhere as required. Do not close cleanouts until inspected and accepted by the Engineer just before placing concrete. 12. Drill air escape holes in bottom members of blockouts. 13. Ensure that formed stair risers within a stair run are equal. B. Edge Forms and Screeds for Slabs: Set edge forms or bulkheads and intermediate screeds for slabs to obtain required elevations and contours in the finished slab surface. Support screeds substantially without penetrating waterproof membranes and vapor barriers. C. Corner Treatment: Form chamfers with 3/4 inch on each leg, unless otherwise indicated, and accurately shape and surface in a manner which will produce uniformly straight lines and edge joints and which will prevent mortar runs. Extend terminal edges to limits, and miter chamfer strips at changes in direction. D. Construction Joints: 1. Locate joints as indicated. Support forms for joints in concrete so as to rigidly maintain their positions during placement, vibration, and curing of concrete. Install keys in all joints.
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Wood Forms
2. Locate and install construction joints, for which locations are not indicated, so as not to impair strength and appearance of the structure, and indicate such joints on Shop Drawings. Locations of construction joints require approval of the Engineer. 3. Position joints perpendicular to longitudinal axis of pier, beam, or slab as the case may be. 4. Locate joints in walls, vertically as indicated; at top of footing; at top of slabs on grade; at bottom of door openings; and at underside of the deepest beam or girder framing into wall; or as required to conform to indicated details. 5. Provide keyways as indicated in construction joints in walls and slabs, and between walls and footings unless otherwise indicated. Place construction joints perpendicular to the main reinforcement. Continue reinforcement across construction joints. E. Load Supports: Loads for construction of roof slab and suspended floor slabs shall be carried down to on-grade base slabs. These loads shall not be carried by intermediate slabs at any time. Formwork loads shall be carried only by structural elements that are supported directly by footings. 3.03 EMBEDDED ITEMS AND OPENINGS IN CONCRETE A. Install conduit, pipe sleeves, waterstops, appliance boxes, frames for items recessed in walls, door frames, drains, metal ties, inserts, nailing strips, blocking, grounds, and other fastening devices required for anchorage or attachment of other work. Firmly secure products in position, located accurately as indicated, before beginning concrete placement. B. Provide openings in concrete for passage of ducts, and provide clearances therefor as indicated on approved Shop Drawings. C. Where masonry walls will be tied to concrete construction in future construction, use dovetail anchor slots positioned for maximum flexibility for masonry installation. 3.04 FORM RELEASE MATERIAL A. Coat form contact surfaces with approved form release material before reinforcement is placed. Do not allow excess form release material to accumulate in the forms or to come into contact with surfaces
Wood Forms
03 11 00
Elderly Apartment / 92-07 / 11-21-06
that are required to be bonded to fresh concrete such as concrete reinforcement and embedded items. Apply form release material in compliance with manufacturer's application instructions. B. Coat steel forms with non-staining, rust-preventive form release material or otherwise protect against rusting. C. Apply form release material to bolts and rods that are to be removed or that are to be free to move. 3.05 REMOVAL OF FORMS A. Remove forms by methods which will not injure, mar, gouge, or chip concrete surfaces, overstress concrete members, or distort formwork. Use air pressure or other approved methods. Do not pry against concrete. Cut off nails flush. Leave surfaces clean and unblemished. 1. Where early form removal is not necessary and will not impact the Contractor's schedule, leave forms in place at least 72 hours, unless otherwise approved by the Engineer. B. When repair of surface defects or finishing is required at an early age, forms may be removed as soon as the concrete has hardened sufficiently to resist damage from removal operations and its own weight. 1. Concrete work that is damaged by removal operations shall be repaired as specified in Section 03 35 00 - Concrete Finishing. Where exposed surfaces are damaged beyond acceptable repairing measures, the damaged concrete shall be removed and replaced with new concrete. C. Top forms on sloping surfaces of concrete may be removed as soon as the concrete has attained sufficient stiffness to prevent sagging. Any needed repairs or treatment required on such sloping surfaces shall be performed at once and shall be followed by the specified curing. D. Wood forms for wall openings shall be loosened as soon as this can be accomplished without damage to the concrete. E. Formwork for columns, walls, sides of beams, and other parts not supporting the weight of the concrete may be removed as soon as the concrete has hardened sufficiently so as not to be damaged by removal operations. F. Forms and shoring in the formwork used to support the weight of concrete in beams, suspended slabs, girders, and other structural members shall remain in place until the concrete has reached adequate
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03 11 00
Wood Forms
strength and stiffness to support itself. Forms shall not be removed before the concrete has reached a minimum of 70 percent of the indicated design compressive strength, unless otherwise approved in writing by the Engineer. G. When shores and other vertical supports are so arranged that the non-load-carrying form-facing material may be removed without loosening or disturbing the shores and supports, the facing material may be removed at an earlier age provided the concrete surfaces are not damaged by such earlier removal. H. Plan reshoring operations in a manner that will ensure that areas of new construction will not be required to support their own weight. Reshoring shall be in place before shoring is removed. During reshoring, do not permit live loads on new construction. Do not locate reshores in a manner and location that will overstress members or induce tensile stresses where reinforcing bars have not been provided. I. When removal of formwork or reshoring is based on the concrete reaching a specified strength, the concrete shall be presumed to have reached this strength when test cylinders, field cured along with the concrete they represent, have reached the strength specified for removal of formwork or reshoring. Except for the field curing and age at test, the cylinders shall be molded and tested as specified in Section 03 05 15 - Portland Cement Concrete. 3.06 FIELD QUALITY CONTROL A. Before placing concrete, check lines and grades of erected formwork and positioning of embedded inserts, blockouts, and joints for correctness. Verify that embedded piping and conduit are free from obstructions. Make corrections or adjustments to ensure proper size and location of concrete members and stability of forming systems. B. While placing concrete, provide quality control to assure that formwork and related supports have not been displaced, that loss of cement paste through joints is prevented, and that completed work will be within specified tolerances.
Wood Forms
03 11 00
Elderly Apartment / 92-07 / 11-21-06
C. During form removal, verify that architectural features meet the form and texture requirements of the samples approved by the Engineer. 3.07 DETECTION OF MOVEMENT A. Check movement using methods, such as plumb lines, tell tales, and survey equipment, to detect movement of formwork during concrete placement. 3.08 RE-USE OF FORMS A. Clean and repair surfaces of forms to be reused in the work. Split, frayed, delaminated, or otherwise damaged form facing material will not be acceptable. Remove such material from the site. Apply form release coating as specified for new formwork. B. Align and secure joints in a manner that will preclude offsets. Do not use patched forms for exposed concrete surfaces. END OF SECTION
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03 11 00
Wood Forms
SECTION 03 11 16 CONCRETE FORMING PART 1 GENERAL 1.01 SECTION INCLUDES A. Layout of formwork. B. C. D. E. Formwork construction. Embedded items and openings in concrete. Form release materials. Removal of forms.
F. Field quality control. G. Detection of movement. H. Re-use of forms. 1.02 RELATED SECTIONS A. Section 03 11 14 Falsework: Falsework for concrete structures. B. Section 03 35 00 Stone Veneer: Finishes for formed surfaces. 1.03 REFERENCES A. ACI 117 Tolerances for Concrete Construction and Materials. B. ACI 301 Structural Concrete. C. ACI 318 Building Codes for Structural Concrete. D. ACI 347 Mortar for Unit Masonry E. TT-S-230 Sealing Compound Elastomeric Type, Single Component, (for Calking, Sealing, and Glazing in Buildings and Other Structures). F. TT-S-1543 Sealing Compound Silicone Rubber Base (For Calking, Sealing, and Glazing in Buildings and Other Structures). G. WCLB No. 17 Standard Grading Rules
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Concrete Forming
1.04 DELIVERY, STORAGE, AND HANDLING A. Lift form panels by methods that will protect panels from damage and distortion. B. Store form panels to prevent warpage. C. Protect panels from damage and contamination which could adversely affect concrete. D. Store and protect products under provisions of Section 01 66 00. 1.05 MEASUREMENT AND PAYMENT A. Measurement Concrete formwork will not be measured separately for payment. B. Payment Concrete formwork will be paid for as part of the indicated Contract unit price or lump-sum price for the associated cast-in-place concrete work as indicated in the Bid Schedule of the Bid Form. 1.06 QUALITY ASSURANCE A. Formwork Standards Unless otherwise indicated, design, construct, erect, maintain, and remove forms and related structures for concrete work in accordance with applicable requirements of ACI 301, ACI 318, and ACI 347. 1. 2. Architectural Concrete Forms for architectural concrete shall be designed and constructed in accordance with ACI 301. Deflection Where dead and live loads on forms will be more than 20 percent greater than the weight of the concrete, provide framing lumber of required strength, and comply with ACI 301 and ACI 347 for design of framing members. Deflection shall be kept within the herein specified tolerances.
3. Concrete Mix Design Design of formwork shall be coordinated with the concrete mix design, as specified in Section 03 05 15 - Portland Cement Concrete, so that form materials, form surfaces, and formwork strength will produce the desired concrete tolerances and finishes. B. Formwork Surface Materials Provide material and work quality which will produce clean and uniform finished surfaces within the allowable tolerances specified and which will conform with the following requirements: 1. Concrete Exposed to View: Provide material and work quality that will produce clean, smooth, and uniform concrete surfaces. Refer to Section 03 35 00 Concrete Finishing, and ACI 301 for requirements. Concrete Concealed from View: Provide material and work quality that will produce aligned concrete surfaces free of fins, honeycomb, and stains.
2. C.
Special Formwork Sections: Provide openings, offsets, sinkages, keyways, recesses, moldings, rustication strips, chamfers, blocking, screeds, bulkheads, anchorages, 03 11 16 - 2 Concrete Forming
Elderly Apartments / 04-28-06
embedded items, and other features. Select materials and provide workmanship that will ensure indicated finishes. D. Chamfered Corners: All external corners shall be chamfered, unless otherwise indicated. E. Removal Features: Design formwork to be readily removable without impact, shock, and damage to concrete surfaces and adjacent materials. F. Tolerances for Formed Surfaces: For buildings and similar structures, comply with the requirements of ACI 301, as applicable. For those items of work or parts of the structure not covered by ACI 301, comply with the requirements of ACI 117, as applicable. Coordinate with the requirements specified in Section 03 30 00 - Cast-InPlace Concrete.
1.06 SUBMITTALS A. General: Refer to Section 01 33 00 - Submittal Procedures, and Section 01 33 23 Shop Drawings, Product Data, and Samples, for submittal requirements and procedures. For formwork submittals involving shoring or falsework, comply with requirements specified in Section 03 11 14 - Falsework. B. Shop Drawings: Submit drawings that indicate and include the following details and requirements: 1. Forming system and method of erection with associated details. 2. Shoring accompanied by design calculations. Include reshoring procedures. Both drawings and calculations shall be signed by an engineer who is currently registered as a civil or structural engineer in the State of California. Coordinate with Section 03 11 14 - Falsework. 3. Locations of construction joints in plan and elevation views. 4. Locations and sizes of conduits, openings, recesses, pipes, ducts, and other attached or embedded products. 5. Beam intersections and other conditions where concrete casting by vertical drop may be restricted. 6. Chamfer strips for corner treatment. 7. Method and schedule for removing forms and shoring. 8. Method for detecting formwork movement during concrete placement. C. Product Data: Submit manufacturers' product data for manufactured products.
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Concrete Forming
D.
Samples: Submit form material, 12 inches by 12 inches or larger in size, for formed concrete which will be exposed in the finished work to public view. Such samples require approval of the Engineer before they may be used in the work.
1.08 JOB CONDITIONS A. Allow sufficient time between erection of forms and placing of concrete for the various trades to properly install concrete reinforcement, embedded items, sleeves, and blockouts. B. Do not apply superimposed loads to the structure until concrete has developed its specified 28-day compressive strength.
PART 2 PRODUCTS 2.01 MATERIALS A. Lumber: Boards and framing lumber shall be graded and grade-marked in accordance with WCLB No. 17. Provide framing lumber of required strength, conforming with the above specified WCLB No. 17. B. Plywood (Plyform): Plywood shall be graded and grade-marked in accordance with U.S. Product Standard PS-1. C. Steel Forms: Proprietary, patented, or fabricated steel forms, using standard or commercial quality, uncoated steel sheet or plate, 3/16-inch minimum thickness, for panel facings. Provide surfaces that will not impart corrosion residue to concrete. Include panel framing, reinforcement, and erection accessories. D. Waffle Slab Forms: Steel or reinforced plastic dome forms for two-way joist construction, smooth surface, of sizes indicated. E. Round Column Forms: Pressed or molded fiber-reinforced plastic or steel, manufactured round column forms, seamless or one-piece (one vertical seam), smooth surface, of sizes indicated. F. Formliners for Exposed and Architectural Concrete: Thermally formed, pressed or molded fiber-reinforced plastic (FRP), ABS alloy plastic, PVC alloy plastic, or similar material, manufactured to produce finished concrete of design, configuration, and surface texture indicated. Formliners shall be continuous, one piece. No horizontal joints shall be acceptable unless the applicable height exceeds the available formliner height. Provide formliners with inherent form-release surface. Formliners may be manufactured for single-use or multi-use service as appropriate. G. Leakage Control Materials: Provide materials capable of producing flush, watertight, and nonabsorbent surfaces and joints, and compatible with forming material and concrete ingredients. Seal form edges with gasketing material or sealant placed in the Elderly Apartments / 04-28-06 03 11 16 - 4 Concrete Forming
joint in such a way that neither a fin nor groove is made in the face of the cast concrete. H. Form Release Agent: Commercial formulation, silicone-free form-release agent, designed for use on all types of forms, which will not bond with, stain, nor adversely affect concrete surfaces, and which will not impair subsequent treatment of concrete surfaces requiring bond or adhesion nor impede wetting of surfaces which will be cured with water, steam, or curing compounds. Plugged Cone Form Ties: Rod type, with ends or end fasteners which can be removed without spilling the concrete and which leave a hole equal in depth to the required reinforcement clearance. Form ties shall be of a design in which the hole left by the removed end or end fastener is easily filled to match the surface of the hardened concrete. Provide removable cones 1-1/4 inches in diameter by 1-1/2 inches deep. Provide preformed mortar plugs to match the color of the concrete, recessed 1/4 inch, adhered with an approved epoxy adhesive.
I.
J. Inserts: Cast stainless steel or welded stainless steel, Type 316 or similar 300 Series, complete with anchors to concrete and fittings such as bolts, wedges, and straps. Provide hanger inserts spaced to match grid of suspended ceiling. K. Dovetail Anchor Slots: 22 gage or heavier galvanized steel dovetail anchor slots, for anchoring of masonry veneer with galvanized steel dovetail anchors provided under Division 4, Masonry. L. Chamfer Strips: 3/4 inch by 3/4 inch triangular fillets milled from clear, straight-grain pine, surfaced each side, or extruded vinyl type with or without nailing flange. M. Miscellaneous Joint Strips: Preformed strips for reveals, rustications, and similar joints fabricated of wood, metal, or plastic. N. Waterstops: Refer to Section 03 15 13 - Waterstops, for requirements. 2.02 FABRICATION A. Formwork - General: Fabricate forms in accordance with approved Shop Drawings. Maintain forms clean, smooth, and free from imperfections and distortion. Fabricate forms for architectural concrete in accordance with applicable requirements of ACI 301. B. Joints: 1. Arrange form panels in symmetrical patterns conforming to general lines of the structure. 2. Unless otherwise indicated, orient panels on vertical surfaces with long dimension horizontal, and make horizontal joints level and continuous.
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Concrete Forming
3. Align form panels on each side of the panel joint with fasteners common to both panels, and in a manner which will result in a continuous, unbroken concrete plane surface. C. Steel Forms: Use material which is clean, smooth, and free from warps, bends, kinks, rust, cracks, and matter which may stain concrete. Fabricate panels in accordance with approved Shop Drawings. Deflection between form supports from concrete placement shall not exceed 1/240 of the span length. PART 3 EXECUTION 3.01 LAYOUT OF FORMWORK A. Locate and stake out all forms and establish all lines, levels, and elevations. 3.02 CONSTRUCTION A. Formwork: 1. Construct formwork in accordance with the approved Shop Drawings, and in a manner that will produce finished concrete surfaces conforming to indicated design and within specified tolerances. Formwork for concrete not exposed to view in the finished work may be constructed of any material that will adequately support the weight of the concrete. 2. Make joints and seams mortar-tight. Install leakage control materials in accordance with the manufacturer's installation instructions, and in a manner that will maintain a smooth continuity of plane between abutting form panels and which will resist displacement by concreting operations. 3. Kerf wood inserts for forming keyways, reglets, and recesses in a manner that will prevent swelling and ensure ease of removal. 4. Maintain forms clean and free from indentations and warpage. Do not use ruststained steel surfaces for forms in contact with concrete. Do not sandblast steel form surfaces to remove rust or mill scale; remove these imperfections by grinding. 5. Brace temporary closures to prevent warpage or displacement and set tightly against forms in a manner that will prevent loss of concrete mortar. 6. Support joints with extra studs or girts, and in a manner that will ensure true, square intersections. 7. Assemble forms in a manner that will facilitate their removal without damage to the concrete. 8. Construct molding shapes, recesses, and projections with smooth finish materials Elderly Apartments / 04-28-06 03 11 16 - 6 Concrete Forming
and install in forms with sealed joints. 9. Provide camber in formwork as required to compensate for deflections caused by weight and pressures of fresh concrete and construction loads and as otherwise indicated. Provide camber strips to compensate for deflections due to permanent loads and longterm deflections due to shrinkage and creep as required. 10. Provide construction openings in forms where required for concrete pour pockets, vibrator access holes, and inspection openings to aid in proper placement and consolidation of concrete, and close up openings during placement of concrete as applicable. 11. Provide inspection and cleanout openings in forms at bottom of walls and columns and elsewhere as required. Do not close cleanouts until inspected and accepted by the Engineer just before placing concrete. 12. Drill air escape holes in bottom members of blockouts. 13. Ensure that formed stair risers within a stair run are equal. B. Edge Forms and Screeds for Slabs: Set edge forms or bulkheads and intermediate screeds for slabs to obtain required elevations and contours in the finished slab surface. Support screeds substantially without penetrating waterproof membranes and vapor barriers. C. Corner Treatment: Form chamfers with 3/4 inch on each leg, unless otherwise indicated, and accurately shape and surface in a manner which will produce uniformly straight lines and edge joints and which will prevent mortar runs. Extend terminal edges to limits, and miter chamfer strips at changes in direction. D. Construction Joints: 1. Locate joints as indicated. Support forms for joints in concrete so as to rigidly Maintain their positions during placement, vibration, and curing of concrete. Install keys in all joints. 2. Locate and install construction joints, for which locations are not indicated, so as not to impair strength and appearance of the structure, and indicate such joints on Shop Drawings. Locations of construction joints require approval of the Engineer. 3. Position joints perpendicular to longitudinal axis of pier, beam, or slab as the case may be. 4. Locate joints in walls, vertically as indicated; at top of footing; at top of slabs on grade; at bottom of door openings; and at underside of the deepest beam or girder framing into wall; or as required to conform to indicated details. Elderly Apartments / 04-28-06 03 11 16 - 7 Concrete Forming
5. Provide keyways as indicated in construction joints in walls and slabs, and between walls and footings unless otherwise indicated. Place construction joints perpendicular to the main reinforcement. Continue reinforcement across construction joints. E. Load Supports: Loads for construction of roof slab and suspended floor slabs shall be carried down to on-grade base slabs. These loads shall not be carried by intermediate slabs at any time. Formwork loads shall be carried only by structural elements that are supported directly by footings. 3.03 EMBEDDED ITEMS AND OPENINGS IN CONCRETE A. Install conduit, pipe sleeves, waterstops, appliance boxes, frames for items recessed in walls, door frames, drains, metal ties, inserts, nailing strips, blocking, grounds, and other fastening devices required for anchorage or attachment of other work. Firmly secure products in position, located accurately as indicated, before beginning concrete placement. B. Provide openings in concrete for passage of ducts, and provide clearances therefore as indicated on approved Shop Drawings. C. Where masonry walls will be tied to concrete construction in future construction, use dovetail anchor slots positioned for maximum flexibility for masonry installation. 3.04 FORM RELEASE MATERIAL A. Coat form contact surfaces with approved form release material before reinforcement is placed. Do not allow excess form release material to accumulate in the forms or to come into contact with surfaces that are required to be bonded to fresh concrete such as concrete reinforcement and embedded items. Apply form release material in compliance with manufacturer's application instructions. B. Coat steel forms with non-staining, rust-preventive form release material or otherwise protect against rusting. C. Apply form release material to bolts and rods that are to be removed or that are to be free to move. 3.05 REMOVAL OF FORMS A. Remove forms by methods which will not injure, mar, gouge, or chip concrete surfaces, overstress concrete members, or distort formwork. Use air pressure or other approved methods. Do not pry against concrete. Cut off nails flush. Leave surfaces clean and unblemished. 1. Where early form removal is not necessary and will not impact the Elderly Apartments / 04-28-06 03 11 16 - 8 Concrete Forming
Contractor's schedule, leave forms in place at least 72 hours, unless otherwise approved by the Engineer. B. When repair of surface defects or finishing is required at an early age, forms may be removed as soon as the concrete has hardened sufficiently to resist damage from removal operations and its own weight. 1. Concrete work that is damaged by removal operations shall be repaired as specified in Section 03 35 00 - Concrete Finishing. Where exposed surfaces are damaged beyond acceptable repairing measures, the damaged concrete shall be removed and replaced with new concrete. C. Top forms on sloping surfaces of concrete may be removed as soon as the concrete has attained sufficient stiffness to prevent sagging. Any needed repairs or treatment required on such sloping surfaces shall be performed at once and shall be followed by the specified curing. D. Wood forms for wall openings shall be loosened as soon as this can be accomplished without damage to the concrete. E. Formwork for columns, walls, sides of beams, and other parts not supporting the weight of the concrete may be removed as soon as the concrete has hardened sufficiently so as not to be damaged by removal operations. F. Forms and shoring in the formwork used to support the weight of concrete in beams, suspended slabs, girders, and other structural members shall remain in place until the concrete has reached adequate strength and stiffness to support itself. Forms shall not be removed before the concrete has reached a minimum of 70 percent of the indicated design compressive strength, unless otherwise approved in writing by the Engineer. F. When shores and other vertical supports are so arranged that the non-load-carrying form-facing material may be removed without loosening or disturbing the shores and supports, the facing material may be removed at an earlier age provided the concrete surfaces are not damaged by such earlier removal. G. Plan reshoring operations in a manner that will ensure that areas of new construction will not be required to support their own weight. Reshoring shall be in place before shoring is removed. During reshoring, do not permit live loads on new construction. Do not locate reshores in a manner and location that will overstress members or induce tensile stresses where reinforcing bars have not been provided. H. When removal of formwork or reshoring is based on the concrete reaching a specified strength, the concrete shall be presumed to have reached this strength when test cylinders, field cured along with the concrete they represent, have reached the strength specified for removal of formwork or reshoring. Except for the field curing and age at test, the cylinders shall be molded and tested as specified in Section 03 05 15 - Portland Cement Concrete. Elderly Apartments / 04-28-06 03 11 16 - 9 Concrete Forming
3.06 FIELD QUALITY CONTROL A. Before placing concrete, check lines and grades of erected formwork and positioning of embedded inserts, blockouts, and joints for correctness. Verify that embedded piping and conduit are free from obstructions. Make corrections or adjustments to ensure proper size and location of concrete members and stability of forming systems. B. While placing concrete, provide quality control to assure that formwork and related supports have not been displaced, that loss of cement paste through joints is prevented, and that completed work will be within specified tolerances. C. During form removal, verify that architectural features meet the form and texture requirements of the samples approved by the Engineer. 3.07 DETECTION OF MOVEMENT A. Check movement using methods, such as plumb lines, tell tales, and survey equipment, to detect movement of formwork during concrete placement. 3.08 RE-USE OF FORMS A. Clean and repair surfaces of forms to be reused in the work. Split, frayed, delaminated, or otherwise damaged form facing material will not be acceptable. Remove such material from the site. Apply form release coating as specified for new formwork. B. Align and secure joints in a manner that will preclude offsets. Do not use patched forms for exposed concrete surfaces. END OF SECTION
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Concrete Forming
SECTION 03 15 00 CONCRETE ANCHORING GENERAL 1.1 SECTION INCLUDES A. B. C. D. E. 1.2 General purpose anchors for horizontal and vertical applications. Adhesive anchors and inserts. Suspended ceiling hanger anchors. Anchors for light duty horizontal applications where holding power is not critical. Deck inserts for threaded rods or bolts.
RELATED SECTIONS A. Section 03300 - Cast-in-Place Concrete: Concrete th
B.at anchors are to be installed in, and other types of cast in place inserts. C. D. E. F. G. H. I. J. K. 1.3 Section 04810 - Unit Masonry Assemblies: Masonry that anchors are to be installed in. Section 05120 - Structural Steel: Steel members that anchors are to be installed in. Section 05310 - Steel Deck: Deck that deck inserts are to be installed in. Section 05400 - Cold Formed Metal Framing: Light gage metal framing to be fastened using anchors specified in this section. Section 05500 - Metal Fabrications: Miscellaneous steel members that anchors are to be installed in. Section 09260 - Gypsum Board Assemblies: Light gage metal framing to be fastened using anchors specified in this section. Section 09512 - Suspended Acoustical Ceilings: Ceilings to be hung using anchors specified in this section. Section 15060 - Hangers and Supports: Mechanical hangers and supports to be hung using anchors specified in this section. Section 16070 - Hangers and Supports: Electrical hangers and supports to be hung using anchors specified in this section.
REFERENCES A. B. ASTM A 193/A 193M - Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service; 2001b. ASTM A 194/A 194M - Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service, or Both; 2001a.
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Concrete Anchoring
C. D. E. F. G. H. I. J. K. 1.4
ASTM A 307 - Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength; 2000. ASTM A 563 - Standard Specification for Carbon and Alloy Steel Nuts; 2000. ASTM A 615/A 615M - Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement; 2001b. ASTM B 633 - Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel; 1998. ASTM B 695 - Standard Specification for Coatings of Zinc Mechanically Deposited on Iron and Steel; 2000. ASTM C 881 - Standard Specification for Epoxy-Resin-Base Bonding Systems for Concrete; 1999. ASTM F 436 - Standard Specification for Hardened Steel Washers; 1993 (Reapproved 2000). ASTM F 593 - Standard Specification for Stainless Steel Bolts, Hex Cap Screws, and Studs; 2002. SAE J429 - Mechanical and Material Requirements for Externally Threaded Fasteners; Society of Automotive Engineers; 1999.
SUBMITTALS A. B. Submit under provisions of Section 01300. Product Data: Manufacturer's data sheets on each product to be used, including: 1. Sizes, locations, and spacing. 2. Installation methods. Engineering Design Data: For each structural application, provide data substantiating specified design requirements, signed by design engineer.
C. 1.5
PROJECT CONDITIONS A. For adhesive anchors, maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install under environmental conditions outside manufacturer's absolute limits.
PART 2 PRODUCTS 2.1 MANUFACTURERS A. Acceptable Manufacturer: Powers Fasteners, which is located at: 2 Powers Lane ; Brewster, NY 10509; Toll Free Tel: [phone]; Tel: [phone]; Fax: [phone]; Email: [e-mail]; Web: www.powers.com Substitutions: Not permitted. Requests for substitutions will be considered in accordance with provisions of Section 01600.
B. C. 2.2
MATERIALS A. Concrete Anchors - General: Select type and size to achieve required loading capacity using
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Concrete Anchoring
information provided by manufacturer. 1. If required type is not indicated, select type appropriate to conditions and item being fastened. 2. If required loading capacity is not indicated on the drawings, determine required loading capacity in accordance with accepted engineering principles and as required by applicable code. 3. For structural applications, provide engineering design by professional engineer licensed in the State in which the project is located. 4. Use recommended and appropriate safety factors and load reduction factors. 5. For non-structural applications, space anchors as required to support the material being anchored without sagging or deformation. B. Anchors for Horizontal Light Duty Applications Where Holding Power is Not Critical: Use one of the following: 1. Acceptable Product: Bantam Plug or Fluted Plastic Anchor; injection molded plastic expansion sleeve for sheet metal and wood screws. 2. Acceptable Product: Scru-Lead; tubular lead alloy with flange, for sheet metal and wood screws. 3. Acceptable Product: Fiberplug; tubular shaped braided jute fiber screw anchor with antimonial lead lining, for sheet metal and wood screws. 4. Acceptable Product: Hammer Drive Pins; 1/4 inch (6 mm) diameter knob head pin with 0.14 inch (3.5 mm) shank and 3/8 inch (9.5 mm) diameter washer as tool guide; heat treated carbon steel, plated in accordance with ASTM B 633, SC1, Type III. 5. Acceptable Product: Calk-In; tool-set expansion type, pre-assembled antimonial lead alloy calking sleeve and Zamac alloy internally-threaded expander cone, into which machine bolt or screw is inserted and tightened. 6. Acceptable Product: Lag Shield; Zamac alloy screw style anchor for lag bolts. 7. Acceptable Product: Single; expansion type pre-assembled machine bolt anchor with Zamac alloy expansion shield and internally threaded expander cone. 8. Acceptable Product: Double; dual expansion type pre-assembled machine bolt anchor with twin tubular sleeves bound together with high tension spring steel bands that contain two protruding wedge shaped cones; Zamac alloy. 9. Acceptable Product: Nylon Nailin; driven type, pre-assembled nail drive anchor with nylon body. a. Mushroom head carbon steel nail plated in accordance with ASTM B 633, SC1, Type III. b. Flat head carbon steel nail plated in accordance with ASTM B 633, SC1, Type III. c. Round head carbon steel nail plated in accordance with ASTM B 633, SC1, Type III. d. Mushroom head Type 304 stainless steel nail. 10. Acceptable Product: Zamac Nailin; driven type, pre-assembled nail drive anchor with Zamac alloy body. a. Mushroom head; carbon steel nail plated in accordance with ASTM B 633, SC1, Type III. b. Flat head; carbon steel nail plated in accordance with ASTM B 633, SC1, Type III. c. Mushroom head; Type 304 stainless steel nail. Deck Inserts: For installation through deck or forms prior to placement of concrete; different diameters color coded for threaded rods or bolts in sizes from 1/4 inch (6 mm) to 3/4 inch (19 mm) diameter; six-sided impact plate providing resistance to rotation; heat treated carbon steel insert plated in accordance with ASTM B 633. 1. For Steel Deck: Bang-It; for installation in pre-drilled holes, with protective sleeve protruding below deck to prevent applied materials from clogging threads or hiding location.
C.
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Concrete Anchoring
2.
For Wood Forms: Wood-Knocker, color coded flange on surface of concrete after stripping. Prior to pouring concrete over the wood form, place the Wood-Knocker Concrete Insert (break-off nails down) on the surface of the wood form at the desired location. Strike the impact plate of the insert with a hand held hammer, until the plastic color-coded flange is flush with the wood surface.
D.
Suspended Ceiling Hanger Anchors: Tie-wire head; use one of the following: 1. Acceptable Product: The Power-Stud; (formerly known as the Rawl-Stud), one piece, wedge type expansion anchor. a. Mechanically galvanized carbon steel anchor body with stainless steel wedges. b. Stainless steel Type 304. c. Stainless steel Type 316. 2. Acceptable Product: Drive; driven type, pre-expanded one-piece unit, heat treated carbon steel, plated in accordance with ASTM B 633, SC1, Type III. 3. Acceptable Product: SPIKE; driven type, pre-expanded one-piece unit that develops compression forces at three different levels in bottom of anchor hole; carbon steel, Grade 8.2, plated in accordance with ASTM B 633, SC1, Type III. 4. Acceptable Product: Lok-Bolt; torqued expansion type; pre-assembled sleeve style, with triple tined expansion sleeve; carbon steel plated in accordance with ASTM B 633, SC1, Type III. Vertical Rod Anchors: Rod hanger head internally threaded to accept steel threaded rod or threaded bolt; use one of the following: 1. Acceptable Product: The Power-Stud; (formerly known as the Rawl-Stud), one piece, wedge type expansion anchor. a. Mechanically galvanized carbon steel anchor body with stainless steel wedges. b. Stainless steel Type 304. c. Stainless steel Type 316. 2. Acceptable Product: Rod Hanger Lok-Bolt; torqued expansion type; pre-assembled sleeve style, with triple tined expansion sleeve; carbon steel plated in accordance with ASTM B 633, SC1, Type III. 3. Acceptable Product: Vertigo; hardened carbon steel plated in accordance with ASTM B 633, SC1, Type III. a. For Wood: Thread forming wood screw; either vertical or side mounting of rod/bolt. b. For Steel: Self-drilling, self-tapping screw; either vertical or side mounting of rod/bolt. c. For Concrete: Double lead threaded bolt with integral washer, to be installed in hole pre-drilled using matched tolerance bit; vertical mounting of rod/bolt. Capsule Adhesive Anchors: Combination capsule adhesive and hardware; Chem-Stud; chisel pointed threaded rod, reinforcing bar (by Contractor), or internally threaded insert, installed into pre-drilled anchor hole using rotary hammer drill, crushing glass capsule containing two part epoxy acrylate resin (vinyl ester) with quartz aggregate and hardening agent, forming adhesive mortar. 1. ASTM A307, carbon steel, chisel pointed threaded rod. 2. ASTM A193, grade B7, chisel pointed threaded rod. 3. Type 304 stainless steel, chisel pointed threaded rod. 4. Carbon steel, internally threaded inserts. Capsule Adhesive Anchors: Combination capsule adhesive and hardware; Hammer-Capsule; threaded rod or reinforcing bar (by Contractor), driven into pre-drilled anchor hole, crushing glass capsule containing two part epoxy acrylate resin (vinyl ester) with quartz aggregate and hardening agent, forming adhesive mortar; not requiring spinning action or special tools to mix adhesive. 1. Capsule shelf life of two years, minimum.
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2. 3.
4. H.
Threaded Rod: ASTM A 307, carbon steel plated in accordance with ASTM B 633, SC1, with Type III clear chromate treatment. Threaded Rod: ASTM A 193 Grade B7, ASTM A 194 Grade 2H or ASTM A 563 Grade DH nuts, and ASTM F 436 washers; plated in accordance with ASTM B 633, SC1, with Type II yellow chromate treatment. Threaded Rod: Type 304 stainless steel, passivated.
Injection Adhesive: Type recommended by manufacturer for application and use, rated for loadings and anchored items required. 1. Acceptable Product: AC100 PLUS; two component, all weather, high performance, zero VOC, epoxy acrylate, complying with descriptive requirements of ASTM C 881, Type IV, Grade 3, Classes A, B, and C, except for gel time; mixed and dispensed through motionless, static mixing nozzle and dispensing tool; shelf life of 18 months, minimum. 2. Acceptable Product: Power-Fast Plus; two component, structural grade, odorless amine based epoxy resin, complying with ASTM C 881, Types I, II, IV, and V, Grade 3, Classes B and C; mixed and dispensed through motionless static mixing nozzle; shelf life of two years, minimum, NSF 61 approved. Anchors and Inserts for Drilled Anchor Holes with Injection Adhesive: 1. Threaded Rod: ASTM A 307, carbon steel plated in accordance with ASTM B 633, SC1, with Type III clear chromate treated. 2. Threaded Rod: ASTM A 193 Grade B7, ASTM A 194 Grade 2H or ASTM A 563 Grade DH nuts, and ASTM F 436 washers; plated in accordance with ASTM B 633, SC1, with Type II yellow chromate treatment. 3. Threaded Rod: Type 304 stainless steel, passivated. 4. Reinforcing Bars: ASTM A 615/A 615M, Grade 60. General Purpose Anchors: Use one of the following: 1. Acceptable Product: Wedge-Bolt; one piece screw anchor with finished hex head with integral washer, double lead thread, chamfered tip, ratchet teeth on underside of head to be installed in hole pre-drilled using matched tolerance bit; head stamped with diameter and length. a. Carbon Steel Wedge-Bolt installed with Wedge-Bit. Plated in accordance with ASTM B 633, SC1, Type III. b. Carbon Steel Wedge-Bolt installed with ANSI Drill Bit. Plated in accordance with ASTM B 633, SC1, Type III. c. Type 410 Stainless Steel Wedge-Bolt installed with Wedge-Bit. 2. Acceptable Product: Power-Bolt; torque-controlled, self-undercutting type; preassembled heavy duty sleeve style, with internal bolt, nylon compression ring, expansion cone with oversized annular ring that expands to undercut the base material. a. Hex head, Grade 5 carbon steel, plated in accordance with ASTM B 633, SC1, Type III. b. Flat head, Grade 5 carbon steel, plated in accordance with ASTM B 633, SC1, Type III. c. Type 303 or 304 stainless steel, ASTM F 593 hex head. 3. Acceptable Product: Power-Stud; torque-controlled, wedge type; one piece body with expansion mechanism consisting of two interlocking independent wedges; head marked with length code; for installation by driving into same diameter hole and expanding by turning nut. a. Carbon steel anchor body and wedges, plated in accordance with ASTM B 633, SC1, Type III. b. Mechanically galvanized carbon steel anchor body with stainless steel wedges. c. Type 304 stainless steel anchor body and wedges. d. Type 316 stainless steel anchor body and wedges.
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Acceptable Product: Lok-Bolt; torque-controlled, expansion type; pre-assembled sleeve style, with nylon compression ring and triple tined expansion sleeve. a. Carbon steel plated in accordance with ASTM B 633, SC1, Type III. b. Stainless steel. c. Head: Hex nut. d. Head: Acorn nut. e. Head: Round head. f. Head: Flat head. Acceptable Product: Set-Bolt; driven deformation type, one piece stud style anchor with bottom-bearing external expansion plug; carbon steel plated in accordance with ASTM B 633, SC1, Type III; attached fixture secured with nut and washer on exposed screw threads. Acceptable Product: SPIKE; driven deformation type, pre-expanded one-piece unit that develops compression forces at three different levels in bottom of anchor hole. a. Carbon Steel, Mushroom Head. b. Carbon Steel, Flat Head. c. Type 316 Stainless Steel, Mushroom Head. d. Carbon Steel Pipe Spike. e. Carbon Steel Tie Wire. Acceptable Product: Drive; driven deformation type, pre-expanded one-piece unit, heat treated carbon steel, plated in accordance with ASTM B 633, SC1, Type III. a. Head: Round (tamperproof). b. Head: Flat (tamperproof). Acceptable Product: Zamac HAMMER-SCREW; driven deformation type, preassembled nail drive anchor with mushroom style head and Zamac alloy body; Phillips screw head for removal. a. Carbon steel screw plated in accordance with ASTM B 633, SC1, Type III. b. Type 304 stainless steel screw. Acceptable Product: Zamac NAILIN; driven deformation type, pre-assembled nail drive anchor with Zamac alloy body. a. Zinc alloy, mushroom head, carbon steel drive pin. b. Zinc alloy, flat head, carbon steel drive pin. c. Zinc alloy, mushroom head, stainless steel drive pin. Acceptable Product: Nylon NAILIN; driven deformation type, pre-assembled nail drive anchor with nylon body. a. Nylon, round head, carbon steel drive pin. b. Nylon, flat head, carbon steel drive pin. c. Nylon, mushroom head, carbon steel drive pin. d. Nylon, mushroom head, stainless steel drive pin. Acceptable Product: TAPPER; one-piece screw anchor. a. Carbon steel with white Perma-Seal fluoropolymer coating. b. Carbon steel with blue Perma-Seal fluoropolymer coating. c. Carbon steel with silver Perma-Seal fluoropolymer coating. d. Carbon steel with bronze Perma-Seal fluoropolymer coating. e. Type 304 stainless steel. f. Type 410 stainless steel. g. Carbon steel. Zinc plated h. Head: Hex washer. i. Head: Flat Phillips. Acceptable Product: Hollow-Set Dropin; tool-set expansion type, pre-assembled tapered slotted expansion sleeve of Zamac alloy with threaded steel expansion cone, into which machine bolt is inserted and tightened. a. Expansion Cone: Plated in accordance with ASTM B 633, SC1, Type III. b. Expansion Cone: Type 304 stainless steel. Acceptable Product: Steel Dropin; tool-set expansion type, pre-assembled shell style with internal expansion plug, into which machine bolt is inserted and tightened.
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a. Carbon steel, smooth wall b. Carbon steel, flange (lipped). c. Carbon steel, coil thread. d. Type 303 stainless steel, smooth wall. e. Type 316 stainless steel, smooth wall. Acceptable Product: Mini Dropin; tool-set expansion type, pre-assembled shell style with internal expansion plug, into which machine bolt is inserted and tightened; embedment of 3/4 inch (19 mm) maximum; carbon steel plated in accordance with ASTM B 633, SC1, Type III. Sizes as required for application. a. Size: 1/4 inch (6 mm). b. Size: 3/8 inch (9.5 mm). c. Size: 1/2 inch (12 mm). d. As required. Acceptable Product: Powder actuated drive pins and threaded studs, with guide washers or flutes; for standard low-velocity installation tools.
PART 3 EXECUTION 3.1 EXAMINATION A. B. 3.2 Do not begin installation until substrates have been properly prepared. If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
PREPARATION A. B. Clean surfaces thoroughly prior to installation. Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.
3.3
INSTALLATION A. B. Install in accordance with manufacturer's instructions and recommendations and as required by applicable code. Apply anchor items neatly, with anchor mounted plumb and level unless otherwise indicated.
3.4
FIELD QUALITY CONTROL A. The Architect/Engineer reserves the right to require the anchor manufacturer's representative to demonstrate proper installation procedures for post-installed anchors and to observe Contractor's installation procedures, at no extra cost to Owner. The Architect/Engineer reserves the right to require pullout or shear tests to determine adequacy of anchors, at no extra cost to Owner. END OF SECTION
B.
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SECTION 03 20 00 Reinforcing Steel PART 1 GENERAL 1.01 SECTION INCLUDES
A. The work under this Section consists of furnishing all labor, equipment, and materials for the installation of all concrete reinforcement and accessories as required by the Drawings and Specifications of this contract.
1.02 RELATED SECTIONS A. Section 03100 Concrete Formwork and Shoring. B. Section 03300 Cast-in-Place Concrete 1.03 REFERENCES
A. Obtain Architect's complete final approval of shop and erection drawings before fabrication and/or erection of any material. B. Prepare shop drawings in accordance with the current edition of the MANUAL OF STANDARD PRACTICE FOR DETAILING REINFORCED CONCRETE STRUCTURES, ACI 315. C. Shop Drawings shall be complete working details indicating bending diagrams; assembly diagrams, splicing and laps of rods; shapes; bar schedules; type and grade of steel; dimension and details of bar position and location, including ties, stirrups, bar supports and other accessories. D. On bending diagrams, show full information regarding types, symbols, depth of bends, etc.
1.04 DELIVERY, STORAGE, AND HANDLING A. Protect Reinforcing steel from moisture and salts. PART 2 PRODUCTS 2.01 MATERIALS
A. Reinforcing Steel: 1. Provide deformed bars, plain steel bars and wire, and welded wire fabric of the sizes shown or noted on the drawings conforming to the requirements listed herein for each item. a. All materials shall be new, clean stock. b. Clearly mark or tag materials. c. Provide copies of certified mill test reports for each heat in each shipment as requested under item 2.02 A. 2. Reinforcing bars for all concrete rein...
specifications