Documents about Precast Concrete

  • 5 Pages

    Lecture 9-Differences in Concrete Systems

    Middle East Technical University, CE xxx

    Excerpt: ... Lecture Nine Differences in Concrete Systems On site Concrete that is cast in place, on site, is called in situ concrete. Advantages to in situ concrete: 1) Adapts to any building shape. 2) It can be assumed to be more or less monolithic, since joints only occur as a result of different pourings to the same structure. 3) It is easily used for two way structural systems. 4) It is adaptable to post tensioning. 5) No cranes are needed. Disadvantages of in situ concrete: 1) Erection of formwork is time consuming 2) Concrete must cure before it is loaded 3) Quality control of finish surfaces is not assured 4) Climate can create problems for curing, and for construction itself 5) Workmanship is variable Precast Concrete Advantages of precast concrete : 1) Rapid construction on site 2) High quality because of the controlled conditions in the factory 3) Prestressing is easily done which can reduce the size and number of the structural members. Disadvantages of precast concrete : 1) Because panel size is limi ...

  • 1 Pages

    WEEK-06

    Allan Hancock College, ARCH 3120

    Excerpt: ... Precast Concrete GROUP - B Visit precast concrete factory ...

  • 1 Pages

    eq2

    SUNY Farmingdale, CON 162

    Excerpt: ... Materials & Methods of Construction II Exam 2: Probable Essay Questions Question 1. Answer the following precast concrete framing questions: Prof. J. Betz A. B. C. D. E. Outline the advantages (12 min.) and disadvantages (5 min.) of precast concrete framing systems. List the four major types of precast concrete slab elements. Define the spanning capacities of each. List and draw four standard precast concrete beam and girder shapes. Describe the use of each. Outline the manufacturing process of precast concrete framing "T" slab. Draw 2 types of precast concrete framing beam to column connections. Describe the reasoning behind the intricate details. Question 2. Answer the following roofing questions: A. What are the advantages and disadvantages of sloped roofs in comparison to flat roofs? B. List three types of sloped roofing and three types of flat roofing, provide details about each. C. What are the advantages and disadvantages of using ballasting? D. Describe three possible places to locate insulation ...

  • 15 Pages

    Tech3

    Penn State, ROB 5005

    Excerpt: ... urg, PA Executive Summary Construction is an industry that is totally costume in nature, no two buildings are the same, and therefore every building has different constructability challenges that need to be addressed to make any project successful. Waynesburg Central High School is no different; there are several project specific items that needed to be addressed. Precast concrete was used as the primary structural system at Waynesburg Central High School. Precast concrete is not the primary method of construction in western Pennsylvania causing several constructability issues. As a result of this potential schedule delays had to be handled; precast concrete also produced a lack of productivity due to unfamiliarity with the product and increased congestion on the site. Foundations at Waynesburg Central High School created a particular challenge with bed rock being encountered 4 feet before expected, for constructability and value engineering reasons the foundations were Figure 2: Waynesburg Central reenginee ...

  • 11 Pages

    CPCI_Introduction_Preast_n

    Concordia Canada, ENGR BCEE 345

    Excerpt: ... Parking Garages A Brief History of Precast Concrete Precast Wall Cladding Bridge Girders The History - Precast Concrete Roman Empire - 2,000 years ago Pozzolana cement Concrete technologies lost dark ages Portland cement invented in early 19th Century The History - Precast Concrete Technology and engineering improved First use of reinforced concrete for bridges. Same advances in technology and engineering brought first use of precast concrete . The History - Precast Concrete Explosion of technologies after the Second World War Further experiments with new products Quality steel allowed development of prestressing and design innovations Made precast concrete girders and factory wall panels High strength concrete was developed Admixtures increased concretes performance Specialty trucks cranes evolved Bridge Girders Many new design ideas. The History - Precast Concrete Prestressed concrete started in Canada in 1952. Research and more accurate design ...

  • 1 Pages

    short

    Maryville MO, DAVISB 120806

    Excerpt: ... EVALUATION OF PRESTRESS LOSSES IN AN INNOVATIVE PRESTRESSED PRECAST PAVEMENT SYSTEM Brent Davis, E.I. Dr. Vellore S. Gopalaratnam, Thesis Advisor ABSTRACT To date no streamlined user efficient concrete roadway rehabilitation method is in practice in the United States. However, the use precast pavement is being evaluated and successful projects in Georgetown, Texas, El Monte, California, and most recently Charleston, Missouri are paving the way for the use of prestressed precast concrete pavement. The use of prestressed precast concrete pavement for the replacement of damaged roadways gives contractors and designers significant advantage by decreasing construction time, improving pavement performance, and mitigating user cost. The project in Charleston, Missouri, funded by the FHWA and MoDOT, is the focus of this thesis. A total of 101 panels were cast and seven were instrumented to monitor temperature and strain. The objectives set forth were to understand important properties of the materials used, study los ...

  • 1 Pages

    Fianl-Exec

    Penn State, LEW 152

    Excerpt: ... Lauren Wilke Structural Option Advisor: M.K. Parfitt Boyds Bear Country Pigeon Forge, TN Executive Summary Boyds Bear Country, located in Pigeon Forge, Tennessee, is designed as a multifunctional space and tourist attraction for Boyds Collections L ...

  • 57 Pages

    Final-Without

    Penn State, LEW 152

    Excerpt: ... istance system; through further investigation, pre-cast panels were selected to replace the initial masonry walls. This alteration in design adds an additional material to the structural system of the building, as masonry is used in the foundation and retaining walls. However, pre-cast panels prove to be more efficient and effective in this application and in this structure. Concrete panels are more highly suited to reach the heights required in the structure, reaching to 70 feet tall. The amount of site construction required for installation is greatly decreased, as the construction of the walls will only require the grouting of pre-installed connections. With the application of precast concrete in the shear walls of the structure, pre-cast may also be used to surround the stairwells and elevators, thus lowing construction time and costs in additional areas of the building. The individual panels and the fully connected unit of the shear walls were designed using finite element analysis in RISA-3D. Lateral lo ...

  • 161 Pages

    Final-Full

    Penn State, LEW 152

    Excerpt: ... he structural system of the building, as masonry is used in the foundation and retaining walls. However, pre-cast panels prove to be more efficient and effective in this application and in this structure. Concrete panels are more highly suited to reach the heights required in the structure, reaching to 70 feet tall. The amount of site construction required for installation is greatly decreased, as the construction of the walls will only require the grouting of pre-installed connections. With the application of precast concrete in the shear walls of the structure, pre-cast may also be used to surround the stairwells and elevators, thus lowing construction time and costs in additional areas of the building. The individual panels and the fully connected unit of the shear walls were designed using finite element analysis in RISA-3D. Lateral loads are applied at each floor level as transferred from the wooden diaphragm. Gravity loads are applied to the North-South resisting walls at each floor level as well. Diagr ...

  • 26 Pages

    CPCI_Parking_Garages_n

    Concordia Canada, ENGR BCEE 345

    Excerpt: ... PRECAST / PRESTRESSED CONCRETE PARKING STRUCTURES 1 OVERVIEW OF STRUCTURAL APPLICATIONS PARKING STRUCTURES 2 PARKING STRUCTURES Precast concrete structures are widely used in parking garages because of their long spans, fast construction and resistance to chlorides. 3 Parking structures often represent the first and last impression a visitor has when visiting a building, hospital, university, shopping or sports centre. 4 Excellent parking structures are designed specifically for the types of visitors a structure will serve, based on the facilities they support and the daily or peak flows of traffic. 5 Parkers will find other options unless a parkade is safe, secure and easy-to-use. 6 Creating the best parking structure to fit the site, users and budget requires a careful balance of all elements and a logical plan from start to finish. 7 The following slides show how precast concrete parking structure are designed and built. 8 PRECAST CONCRETE CONSTRUCTION Columns Precast columns are haunched ...

  • 8 Pages

    Proposal

    Penn State, CMF 212

    Excerpt: ... Caitlin Ferrell Structural Option Dr. Boothby, AE Faculty Consultant Erie Convention Center and Sheraton Hotel Thesis Proposal Submittal Date: 12 December 2005 Executive Summary Erie, Pennsylvania The Erie Convention Center and Sheraton Hotel, located in Erie, Pennsylvania is an eleven story steel building with a hollow-core precast concrete plank floor system. The hotel and convention center is 132,000 square feet, with 200 guest rooms on the upper nine and a half floors, with all of the amenities of a high class hotel on the bottom one and a half floors. As with many hotels and convention centers, the bottom floors require large open, column free spaces for the ballroom and conference areas. The steel beam with concrete plank structure was designed in order to accommodate these needs, however there is another option. As the depth work of my thesis, I will investigate the use of a staggered truss system in lieu of steel beams and girders. Because the current structural system is a hybrid system comprise ...

  • 1 Pages

    Exec Summary Tech 2.pdf

    Penn State, CMF 212

    Excerpt: ... Caitlin Ferrell Structural Option Dr. Boothby, AE Faculty Consultant Erie Convention Center and Sheraton Hotel Erie, Pennsylvania Technical Report #2: Pro-Con Structural Study of Alternate Floor Systems Submittal Date: 31 October 2005 Executive Summary Technical Report #2 is a basic overview of the main floor system of the building, along with a comparison of this existing system to four other alternative floor systems. The proposed floor system for the Erie Convention Center and Sheraton Hotel is a steel framing structure with 8" hollow-core precast concrete plank. Through the use of RAM Structural System Design, the CRSI Design Manual (2002), and hand calculations, I have analyzed and designed the members for the following four floor systems: Composite steel beams with composite steel deck Non-composite steel beams with form deck Open web steel joists with form deck One-way concrete pan joist With each system, I compared the floor sandwich depth, weight, vibrations, time, and cost concerns wit ...

  • 121 Pages

    purdue-2005-09-new-1

    Purdue, CE 479

    Excerpt: ... Structural Engineers TGRWA 407 South Dearborn, Suite 900 Chicago, Illinois Structural Engineers Structural Materials, Components and Systems November 13, 2006 TGRWA Tylk Gustafson Reckers Wilson Andrews, LLC Chicago, Illinois Building Materials Structural Steel Rolled Sections Open Web Members Metal Deck Reinforced Concrete Conventional Cast-In-Place Concrete Post-Tensioned Concrete Hollow Core Precast Concrete Slabs Precast Concrete Wall Panels Masonry Concrete Masonry Units (CMU) Clay Masonry (Brick Masonry) Glass Block Timber Sawn (Dimensional) Glu-Lam Engineered Wood Products Light Gauge Framing Glass Building Materials The choice of building materials is dependent upon: Architectural Aesthetics Building Layout / Form Building Use Building Codes Construction Schedule Economy Material Properties Project Scale Project Location Building Materials and Components Selected building materials and components mus ...

  • 57 Pages

    Final-Proposal

    Penn State, LEW 152

    Excerpt: ... Lauren Wilke Structural Option Advisor: M.K. Parfitt Boyds Bear Country Pigeon Forge, TN Proposal Problem and Potential Solutions: Statement Boyds Bear Country in Pigeon Forge, Tennessee was built as a combination of several materials, creating dif ...

  • 1 Pages

    Full_Thesis_Board

    Texas Tech, ARCH 5692

    Excerpt: ... A Thesis by Jason Louis Kahn Thesis Adviser: Kentaro Tsubaki, R.A. Thesis Instructor: Saif Haq, PhD. ARCH 5692, Fall 2008 Museum Addit m Addition to the Spe encer Theater Capitan Fort Site Stanton Alto Hondo Ruidoso Thesis Statement: By abstracting ...

  • 36 Pages

    Concrete

    University of Florida, BCN 3611

    Excerpt: ... Division 3 - Concrete Concrete Reinforcing Accessories Concrete Finishing Curing Transporting Concrete Forms Precast Concrete BCN3611 1 Concrete Mix design: aggregate, cement, admixture, strength, color Unit: Cubic Yard (cy) Waste: 8% for slabs, 5% for other elements BCN3611 2 BCN3611 3 BCN3611 4 BCN3611 5 BCN3611 6 BCN3611 7 BCN3611 8 BCN3611 9 BCN3611 10 Reinforcing Steel Type of steel: grade, smooth/deformed, type of coating Size: #3 to #14 Unit: ton (2000 lbs) Lap Splicing Waste: 10% when the bars are cut and bent on the job Supports: chairs, spacers, bolsters, wires,. BCN3611 11 BCN3611 12 BCN3611 13 BCN3611 14 Welded Wire Mesh Designation: 6x6 10/10 long. spcg x trans. spcg. gage long. x gage trans. Available in 5' x 150' rolls Unit: 100 sf (CSF) Lap: one transverse spacing, i.e., 10% for 6x6 10/10 Waste: 5% BCN3611 15 BCN3611 16 BCN3611 17 Vapor Retarder Polyethylene (4 or 6 mil) Lap: 6" Waste: 5% ...

  • 36 Pages

    Concrete

    University of Florida, BCN 5618

    Excerpt: ... Division 3 - Concrete Concrete Reinforcing Accessories Concrete Finishing Curing Transporting Concrete Forms Precast Concrete BCN 5618 1 Concrete Mix design: aggregate, cement, admixture, strength, color Unit: Cubic Yard (cy) Waste: 8% for slabs, 5% for other elements BCN 5618 2 BCN 5618 3 BCN 5618 4 BCN 5618 5 BCN 5618 6 BCN 5618 7 BCN 5618 8 BCN 5618 9 BCN 5618 10 Reinforcing Steel Type of steel: grade, smooth/deformed, type of coating Size: #3 to #14 Unit: ton (2000 lbs) Lap Splicing Waste: 10% when the bars are cut and bent on the job Supports: chairs, spacers, bolsters, wires,. BCN 5618 11 BCN 5618 12 BCN 5618 13 BCN 5618 14 Welded Wire Mesh Designation: 6x6 10/10 long. spcg x trans. spcg. gage long. x gage trans. Available in 5' x 150' rolls Unit: 100 sf (CSF) Lap: one transverse spacing, i.e., 10% for 6x6 10/10 Waste: 5% BCN 5618 15 BCN 5618 16 BCN 5618 17 Vapor Retarder Polyethylene (4 or 6 mil) Lap: ...

  • 1 Pages

    executive2

    Penn State, HJH 139

    Excerpt: ... SIGNAL HILL PROFESSIONAL CENTER Manassas, Virginia Morabito Consultants Joseph Henry, Structural Emphasis Dr. Hanagan, Thesis Advisor Study of Alternate Structures Report October 31, 2005 EXECUTIVE SUMMARY Like most suburban office building in Northern Virginia, the Signal Hill Professional Center, a four-story office structure in Manassas features composite steel construction for both the office building and its corresponding underground parking garage structure. In order to assess the competence of this composite system, it was compared to various design alternatives, including: Non-composite Steel Beams Precast Concrete Floor Planks Steel Joists One-Way Concrete Slab Concrete Pan Joists Two-Way Concrete Slab Trus-Joist Manufactured Wood Joists and Girders A standard 20'-0"x 30'-0" bay was analyzed for both office loads and parking structure loads, using specifications from various manufacturers, the Concrete Reinforcing Steel Institute Handbook, and the Precast Concrete Institute Handbook ...

  • 1 Pages

    Executive Summary Proposal

    Penn State, CMF 212

    Excerpt: ... Caitlin Ferrell Structural Option Dr. Boothby, AE Faculty Consultant Erie Convention Center and Sheraton Hotel Thesis Proposal Submittal Date: 12 December 2005 Executive Summary Erie, Pennsylvania The Erie Convention Center and Sheraton Hotel, located in Erie, Pennsylvania is an eleven story steel building with a hollow-core precast concrete plank floor system. The hotel and convention center is 132,000 square feet, with 200 guest rooms on the upper nine and a half floors, with all of the amenities of a high class hotel on the bottom one and a half floors. As with many hotels and convention centers, the bottom floors require large open, column free spaces for the ballroom and conference areas. The steel beam with concrete plank structure was designed in order to accommodate these needs, however there is another option. As the depth work of my thesis, I will investigate the use of a staggered truss system in lieu of steel beams and girders. Because the current structural system is a hybrid system comprise ...

  • 1 Pages

    ProposalExecutiveSummary

    Penn State, ALB 278

    Excerpt: ... Arnon L. Bazemore Construction Management CENTRE Executive Summary Thesis Proposal Proposal Executive Summary Four topics, related to the Sears Centre were identified as key areas of investigations. Analysis and recommendations for each topic will ...

  • 2 Pages

    Review Chapter Three Part 2 Definitions

    Catholic, ARCH 316

    Excerpt: ... C UAThe Catholic University of America A R C H School of Architecture and Planning 316 716 Designing Construction Principles, Materials & Methods Sprg 2006 George Martin 4 credits Review Chapter Three Part 2 *Definitions adapted from Edward Allen and Leslie Simmons Precast Concrete - Concrete that is cast and cured in a position other than its final position in a structure. Steam Curing Aiding and accelerating the setting reaction of concrete by the application of steam. Solid Slab - A concrete slab without ribs or voids that spans between beams or bearing walls. Hollow-core slab - A precast concrete slab element that has internal longitudinal cavities to reduce its self weight. Double Tee and Single Tee A precast concrete slab element that resembles two "T's or a single "T" respectively. Toping - A thin layer of concrete cast over the top of a roof deck. They are either of a bonded or unbonded type. Inverted Tee A precast concrete element that resembles an up-side-down "T" where the two horizon ...