Lecture 7 - Framming Reading Drawing 3

Lecture 7 - Framming Reading Drawing 3 - Lecture 7 Reading...

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Unformatted text preview: Lecture 7 Reading Drawing ||l Framing Systems 1. Platform framing 2. Balloon framing 3. Post—and—beam 4. Floor framing Framing Systems Objectives: After completing this lecture, you will be able to identify each of the following types of framing on construction drawings Platform Balloon Post—and—beam Floor framing Platform framing TOP CHORD BOTTOM CHORD Also called western framing CEILING JOlSTS All wall studs, the main framing members, extend only the height of ONE story The bottoms of the studs are held in position by a bottom (or sole) plate The tops of the studs are held in position by a top plate (usually a double top plate) SHEATHING i—/ - SUBFLOOR FOUN DATION 7‘ Figure 15—1. Platlorm. or western, framing Platform framing “*4 G’VMTL, $71103 _ , rump/9 M/SULr ’ xo‘sn.,CJo/;_ Given: Typical wall section of a building Required: What type of . 5‘f7“””“””” construction framing is it? é W“ A57 ALA: » KQXEMA 30%;. ’42": /La“ Balloon framing RAFTERS-w—x DOUBLE PLATE—~- M SECOND " FLOOR \‘\\\\\“§‘.‘\\‘\\ \\ \ \,\.‘.\ \‘Y‘ A\\\\\-\\ ’f \ ~-- BOTTOM PLATE FOUNDATlON ~~~~ ~ __ SUBFI 00R Flgure 15—5. Balloon framing Balloon framing Exterior wall studs are continuous from the foundation to the top of the wall Sheathing is used to cover walls and prevent wracking of the walls Interior shear walls are framed walls covered with structural sheathing (according building codes for earthquake) that make the building stronger ' ' Figure: 15—6. Wraioking Figure 15—7. Let-ln braclng prevents wracking. Post—and-beam framing Post-and—beam framing uses heavier framing members with CElLlNG JOISTS ARE *- OFTEN OMI'I'I'ED FOFl larger spacing SLOPING CEILING Quick erection because fewer pieces of materials are used in post—and-beam framing Figure 15—10. Poslrand-beam lramingi Their wider spacing results in a saving of materials In the Lake House: The posts are 3 1/2 inch square steel tubing and the beams are plywood box beams. WELDED BOX BEAM --- Figure 15—43. Beam pocket for the Lake House. Pole buildings JOlST HEADER - PRESSURE POLE NOTCHED TREATED OR FACED i, “ll it it it |I EMBEDMENT>AND ALlGNMENT OF POLES. DEPTH 0F EMBEDMENT DEPENDS ON SPACING AND Sle 0? POLES, WlND LOADS, AND SO FORTH, AND MAY VARY FROM 5 TO 8 FEET. BAND JOlST OR HEADER Caurtmy 0/ American Wood Prom/V971 Insllftrw Figure 15—14. Basic elements of a pole building, Courtesy of American Wood PI’BSS/‘VGI‘S Institute - Pole structures are a variation of post-and—beam construction - Used in areas where hurricanes and high tides are a thread - Pole buildings are strong. They resist severe wind and can be kept above damaging flood water. ‘ Metal framing o Widely used in commercial construction where the strength of structural steel or reinforced concrete is not required. - Light—gauge steel framing uses studs and joists, the same as wood framing ° Unlike wood framing, steel framing uses tracks and runners in place of bottom plates and top plates - The lighter, less expensive grades of metal framing are not as strong as wood, so they are used primarily for interior partitions o The type of metal framing to be used for a project is indicated in the construction drawings and specifications - Like wood framing, metal framing can be pre-assembled Metal framing Flgumi5—16,, ., awning,CommsyofwlonichMeta/mummy Energy saVing techniques Figure 15—18. Conventional corner posts for 2 X 4 framing Conventional framing: - 2 x 43 spaced at 16 inches on center 0 25 percent of the wall is solid wood, which conduct more heat loss out of the building Energy saving techniques Flgure15—19. Corner construction for Arkansas Energy Saving System Wood framing with special corner construction: o 2 x 63 spaced at 24 inches on center - less than 20 percent of the wall is solid wood - 2 inches thicker insulation - Less heat loss and more energy saving Floor framing systems ° Floor framing in light construction - Sill construction Floor framing systems @MECTWEfl After completing this unit, you will be able to perform the following tasks: as Locate columns and piers and describe each from drawings. Locate and describe the girders that support floor v framing. m Determine the lengths of columns and the heights of piers. m Describe the sill construction drawings. 1 u identify the size, direction, and spacing of floor joists according to a set of drawings. 9 around openings in a shown on a set of is Describe the floor framin floors Floor framing in light construction The most common system of floor framing in light construction involves the use ofjoists and girders Joists are parallel beams used in the floor framing Girders are supported at regular intervals by wood or metal posts or by masonry or concrete piers Laminate veneer lumber (LVL), an engineered lumber product with high strength, is popular for use as girders Figure 164. Jolsi~andvgirder floor iramir» Courtesy of Richard T Krelt, Sr. , Floor framing in light construction 1 :'v ,. g: L—UNEXIAV/l TED (PAM/L spACE :E w/po; van/wae MOISTURE mare/m2 I .: 7 | l 3-1' 4’ZDNE awe ln' /o’..8’/ /0’-a’/ '3‘ Mam/Mow”: [I :2 ‘ |_‘(" .L_| L :10/57510501/5 zooé/é “a c l l :zl .' / f | an I. 4~4"p/PE COL, .VEL ' ‘5! l L ul/4 "x4 "x V4"6EARM Dams 2’-O">< z '—0“x /0"C‘ONC. F76. (rs/P.) I. on 'FOUNDAT/ON )OLAN SCALE! Veg/’— o" Figure 16—2. Foundation plan with note for column and footing Floor framing in light construction A bearing plate is a steel plate that provides a flat surface at the top or bottom of the column or .4 post \«BE’ARINQ PLATE -Figure 1641. Bearing plate Floor framing in light construction To find the height of the columns or piers, do the following steps: — Determine the dimension from the basement floor to the finished first floor - Subtract from this dimension the depth of the first floor, including all of the framing and the girder — Add the distance from the top of the basement floor to the bottom of the column - The result equals the height of the column or pier Floor'framing in light construction Example: Refer to Fig. 16-6 - Dimension from finished basement floorto finished first floor = 8‘-1O‘/2 “ s Allowance for finished floor = 1” Nominal 2x8 joists = 7% “ 2x4 bearing surface on girder = 11/2 “ W8x31 = 8" V Total floor framing = 17% “ or l’-5%" - 8'—101/2" minus 1‘-5%” = 7‘-4% “ i' Add thickness of concrete slab - 7’-4%" plus 4" = 7’-8%" figure 16—5. Calculate the height of the steel column. 10 Ffloorfianflngianhtconsuucflon fiumsrs W000 NAILER BOLTED OVERLAPPED T0 STEEL sIRDER § \ .\ r ' WOOD LEDGER 2X BOLTED T0 WEB OF STEEL GIRDER JOIST HANGER Figure 16—5. Several methods 01 attaching joists to glrders Schonsuucfion - Sill plate: is a piece in contact with the foundation, through which the anchor bolts pass to secure the floor in place - Sill sealer: is a compressive, fibrous material that acts like a gasket that is used to seal any gaps between the sill plate and the foundation - Sill construction (or box sill) is made of sill plate, sill sealer, joist, and joist header; i.e. the entire construction of the floor frame at the top of the foundation. 0 The sizes of materials are given on a wall section or sill detail. 11 Sill construction Floor joists i souo wooo LAMINATEDH’JI)" METAL C SHAPE TRUSSED Figure 17—4. Several styles of joists Floorjoists are the parallel framing members that make up most of the floor framing Can be made of different materials: solid wood, laminated timber, metal, and trussed members (opened joists). ' Metal joists are often used in commercial and industrial construction, whereas framing lumber and engineered joists'are used in residential construction 12, r ._.W_ _ _ Hhflmwmtfim,-Mcfi.,_.,m.._.—_...—H»i A i s ,, «A M n. v v M. Floor joists Joist size = ’? Spacing = ? r ,4. my 27:: 17:13:75» ‘ ' fiaastV? WW7sz ' 2; Mai-«QWGM -< may 1m “y b :7 simflag y 4 ,. « fim‘é‘flfi ‘3’) My“ 1 , t,» W I ¢ 5 l l ‘ ‘ V j .5. "0 Joist'callouts on the foundation plan Floor joists Latte Hesse Moor Warming The floor framing for the Lake House is shown on Framing Plan 1/6 (included in the packet). Notice that the framing plan is made up of a simplified floor plan and single lines to represent floor joists, beams, and joist headers. A more elaborate type of framing plan uses double lines to represent the thickness of each member, Figure 17—8. The framing plan shows the location and direction of framing members, but for more detail it will be necessary to refer to Floor Plan 2/2 also. maemmx a”: mm; NJ: 5 13 m QKV wwmqéqi . fl? mufiwufioKAWQE 7 m A’O\X N I”) WWDOQEVUS 1133b IY @w’X Qb‘x N m P m BA —a, Doublelline Irammg plan Figure 17 H.002 FEAM/A/E OLA/V some 346": /’—o” Figure 17—6" A simpie floor framing man _FLOO/€ / 574/EM/ELL ts IS n $305 Hanan jO Q 6 bum n® 966» QXN $99; Dim Floor joists Floor 14 Floorjoists V2" SHEA WING I; ~# WArEe/omoxrwq WA iEPW/Né (fifpsH (a) srucco Floor joists ’ “BRIG/(145N551? w/MErAL 7755 AB” V5127? Vary/0E2. /”A/,€ 5/2465 / V K ' , PM JO/sr 5/15 SE /2. Sl/EAT/I/Ny SAESPEC Foum DAT/0A1 pow ——’— — , ’, FLASH/N6 WEED HOLES _ 4”50L/D MASON/2y “g'ws'k/e’ro/Ucn BLOCK 2é 5.4. 5,1, rEEM/rzfimgm oz w—J’ APPROVED 50/4 WEATME/U T H ,, ~ — 6,6005 Mir-“67.641. 4x/6 plLAst/Z ' w gw NoTOVE/Z 9’0.C. W” ,#, W. FP'. W/J TERPEooF/Ne; OL/QE‘ .‘ 3V6”PAI‘ZG/UC7H w l 4" GOA/C, 5MB w/A/o, m ' ‘ II / mg 6we~mmflM “£5293 ,3, 852/9255; MEM5K4N£ ova/2‘ 4”6£A VEL — 21/05 ¢Eaas H2: 4” M," luau (a) DE/CK men/age 15 Floor joists ‘ r -0 mar ’ wwecm e my” my) (a. 3: may «x WALL Ami “ a}! Figure 17—10. Part 01 the Lake House Floor plan.Cm/rlosy of Faber! C. Kurzan Floor joists W 6% m » m Haw agar—WW W PLWW uNmm/Mgm' W 59X I’m/NW ‘ ' #3 $511.; FLUfiH W/Fww 1 21% vF- 1x W —~ ——-« (was I’m-wk? FLN*~I%2)‘ é —~“&" 92m IHéLJL.. ' ye" aw. m 6/4 x 9? F-mmwe @ 24" ac. K1610 wimp, :0”ch1 (mm. mm a» 24“ ac) Figure 17—11. Part of the Lake House wan section. Courlesy of Robert O Kurzon 16 Floorjoists 0% mummwcmmw ... g ‘m m a .W d m e V B .m a C m S e s u N ‘nlw P .y ,1 9w 1. _ 7 1. e r u M. F 17 ...
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This note was uploaded on 02/20/2009 for the course CEM CEM 125 taught by Professor Tanghnguyen during the Fall '08 term at CSU Long Beach.

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Lecture 7 - Framming Reading Drawing 3 - Lecture 7 Reading...

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