Residential Deck & Deck Roof

Transcript

Residential Deck & Deck Roof Page 1 Residential Deck & Deck Roof Permit Packet North Fayette Township 400 North Branch Road Oakdale, PA 15071 Phone: 724-693-3107 Fax: 724-693-8132 Visit us on our web site — www.north—fayette.com Page 2 DECK CONSTRUCTION NOTES All decks, landings, porches or balconies less than thirty inches (30") above grade must obtain a zoning permit. All decks, landings, porches or balconies greater than thirty inches (30“') above grade measured at a point three feet (3’ ) away from the edge of the deck must obtain a building permit. Please see the “Quick Guide for a Residential Building or Zoning Permit" for Specific Permit Filing Instructions. - The attached “Prescriptive Residential Wood Deck Construction Guide" contains requirements for residential deck construction that can be used to prepare adequate construction documents for your project . Construction documents may be hand drawn however, they must include all required information and details as shown in the guide and must be clearly legible. Please note that simply copying and re—-submitting any details or figures from this guide will NOT be accepted as adequate construction documents. - This guide may be used for deck construction around a swimming pool, however, a meeting must be scheduled with the inspector prior to submitting an application to discuss swimming pool barrier requirements and how they affect the pool deck construction. ' Decks and porches may NOT be attached to manufactured dwellings (HUD Homes) without the approval of the manufacturer or an Engineer. - When a hot tub, spa or similar device is installed on a deck, a registered design professional (i.e . Architect or Engineer) must stamp, seal and approve the construction documents. (This includes installing a hot tub, spa or similar device on an existing deck. ) ' Screws are NOT permitted to be used with any metal connectors including but not limited to joist hangers, post anchors, post to beam connectors or hurricane tie downs unless the screw is specifically approved by the manufacturer of the device. - when attaching a ledger board to an existing home with pre—engineered floor joist an attachment detail from the manufacturer of the floor joist, builder or Engineer must be submitted with the permit application. Page 3 ROOF CONSTRUCTION NOTES ' Adequate construction documents containing similar details to those for a deck must be submitted for a roof. Although designed for deck construction, several details in the “Prescriptive Residential Wood Deck Construction Guide" are the same for roofs and can be used as a guide for the construction documents. Attached at the end of this guide are charts for girder and header (beam) sizes and spans and rafter spans. The Ground Snow Load is 30psf and the Dead Load is 10 psf. Common wood (treated or un—treated) purchased at stores and lumber yards is Spruce—Pine—fir #2 unless otherwise noted. ' If pre—engineered trusses are installed in lieu of rafters, the truss specifications may be submitted with the application, but must be available for review during the frame inspection. ' Hurricane ties down clips must be installed on all rafters or trusses. ' Rafter or truss beams for a “Reverse Gable" style roof may be supported on an existing load—bearing wall provided there is adequate support. The beam may not rest on brick or stone veneer. ' Roof rafters for a cathedral ceiling in a “Reverse Gable" style roof must be supported by minimum l”X4” collar ties spaced not more than 4 feet apart, a properly sized LVL ridge beam, or a ridge beam design approved by a Registered Design Professional (i.e Architect or Engineer) . ' Roofs may NOT be attached to manufactured dwellings (HUD Homes) without the approval of the manufacturer or an Engineer. ~ Posts -for roofs must be supported by direct bearing, either by resting directly on top of the deck posts and footer (if properly sized) or bearing onto a separate footer. Roof posts may NOT bear onto the deck beam or floor joists. ' Asphalt shingles are NOT permitted to be installed on roofs with less than 2:12 pitch. An ice barrier must be installed in lieu of normal underlayment and extend from the lowest edges of all roof surfaces to a point at least 24 inches inside the exterior wall line (posts/beams) of the building. ' Screws are NOT permitted to be used with any metal connectors including but not limited to joist hangers, post anchors, post to beam connectors or hurricane tie downs unless the screw is specifically approved by the manufacturer of the device. Page 4 e Aces tance crtv Ridita on ~ Deck Construction Guido Based on the 200.9 International Residential Code existing house floor construction guard pm; ledger board attachment attachement to existing house i'tl"t'l joist connection V Where applicable, provisions and details contained in this document are based on the intemationa! Residentiai Code (IRC) [bracketed text references applicable sections of the IRC]. Prescriptive construction methods recommended meet or exceed minimum requirements of the IRC. Provisions that are not found in the IRC are recommended as good industry practice. Where differences exist between provisions of this document and the IRC, provisions of the IRC shall apply. This document is not intended to preclude the use of other construction methods or materials. All construction and materials must be approved by the authority having jurisdiction. Every effort has been made to reflect the language and intent of the IRC. However, no assurance can be given that designs and construction made in accordance with this document meet the requirements of any particutar iuriscliction. Q’ beam post-to-beam connection - (flush, tight bearing) Copyright © 2009 American Forest & Paper Association, Inc. Page 5 AF&PA® ® NCIL Engineered and Traditianarl Wood Praducts Automatically sign m_e into this document in the future. (D0 not select thns when usmg a DUDIIC computer) nnmmmfi .--l-fifim:-1-EA-q;h51~c Hfih-hag Page 6 - CONTENTS MINIMUM REQUIREMENTS ........................................ ..2 DECKING REQUIREMENTS ......................................... ..3 JOIST SIZE ....................................................................... ..3 BEAM SIZE & ASSEMBLY REQUIREMENTS DECK FRAMING PLAN ..................................... ..l ......... ..6 JOIST-TO-BEAM CONNECTION .................................. ..7 JOIST HANGERS ............................................................ ..7 POST REQUIREMENTS ................................................. ..7 RIM JOIST REQUIREMENTS ........................................ ..8 FOOTINGS ................................................................ .... ..9 LEDGER ATTACHMENT REQUIREMENTS ............. .. I0 PRESCRIPTIVE RESIDENTIAL WOOD DECK CONSTRUCTION GUIDE PROHIBITED LEDGER ATTACHMENTS ................. .. 12 LEDGER BOARD FASTENERS .................................. .. 12 FREE-STANDING DECKS ........................................... .. 14 DECK STABILITY ........................................................ .. l4 GUARD REQUIREMENTS .......................................... .. l5 GUARD POST ATTACHMENTS ................................ .. 16 STAIR REQUIREMENTS ............................................. .. 17 STAIR HANDRAIL REQUIREMENTS ....................... .. 13 STAIR FOOTING REQUIREMENTS .......................... .. 19 STAIR LIGHTING REQUIREMENTS ......................... .. [9 FRAMING AT CHIMNEY OR BAY WINDOW ......... .. 19 MINIMUM RE! QUIREMENTS 1. This document applies to single level residential wood decks only. 2. All lumber shall be identified by the grade mark of, or certificate of inspection issued by, an approved lumber grading or inspection bureau or agency (www.alsc.org). All lumber shall be a naturally . durable species (such as Redwood or Western Cedars) or be pressure-treated with an approved process and preservative in accordance with American Wood Protection Association standards (such as but not limited to those shown in Table l) _ [R317 and R318]. All lumber in contact with the ground shall be approved preservative treated wood suitable for ground contact. [R3 17.1.2} 3. All nails shall meet the requirements of ASTM F 1667. Threaded nails as stated in this document include helical (spiral) and annular (ring-shank) nails. Wood screws shall meet the requirements of ANSI/ASME B18. 6.]. Bolts and lag screws shall meet the requirements of ANSI/ASME B18. 2. 1. 4. Throughout this document, 1A" diameter bolts and lag screws are specified for various connections. Edge distance and spacing requirements are based on W’ diameter fasteners. If larger (or smaller) Fasteners are specified, edge distance and spacing needs to be adjusted. 5. To resist corrosion, the following is required [R3 17.3]: I All screws, bolts, and nails for use with preservative treated wood shall be hot-dipped zinc-coated galvanized steel, stainless steel, silicon bronze, or copper. Fasteners to be hot-dipped galvanized shall meet the requirements of AST M A 153, Standard Specrficationfor Zinc Coating (Hot-Dip) on Iron and Steel Hardware, Class D for fasteners 3/3" diameter and smaller or Class C for fasteners with diameters over J/8". I Fasteners other than nails and timber rivets shall be permitted to be of mechanically deposited zinc- coated steel with coating weights in accordance with ASTM B 695, Class 55, minimum. I All hardware (joist hangers, cast-in-place post anchors, etc.) shall be galvanized or shall be stainless steel. Hardware to be hot-dipped prior to fabrication shall meet ASTM A 653, Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process, G—l85 coating. Hardware to be hot-dipped galvanized after fabrication shall meet ASTM A123, Specification jbr Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products. I Fasteners and connectors exposed to salt water or located within 300 feet of a saltwater shoreline shall be stainless steel grade 304 or 316. I Other coated or non-ferrous fasteners or hardware shall be as approved by the authority having jurisdiction. 6. Decks supporting large concentrated loads such as hot tubs are beyond the scope of this document. 7. This document does not apply to decks which will experience snow loads, snow drift loads, or sliding snow loads that exceed 40 psf. This document does not address wind or seismic design issues. 8. Flashing shall be corrosion~1'esistant metal [R703.8: of minimum nominal 0.0l9-inch thickness or approved non-metallic material. Aluminum should not be used in direct contact with lumber treated with preservatives that contain copper such as ACC Copper Azole, or ACZA. Decks shall not be used or occupied until final inspection and approval is obtained. 10. This document is not intended to preclude the use c other construction methods or materials not shown herein. American Wood Council Page 7 PRESCRIPTIVE RESIDENTIAL WOOD DECK CONSTRUCTION GUIDE Table 1. Common preservative treatments and retention levels (pcf) for sawn lumber in round contact.“ Species ACQ-B ACO-C ACQ-D CA-B CuN-W Southern Pine 0.40 0.40 0.40 0.21 0.11 Douglas Fir-Larch 0-40 0-40 NR 0.21 0.11 |-|em-Fj|- 0.40 0.40 0.40 0.21 0.11 ponderosa pine 0.40 0.40 0.40 0.21 0.11 Red pine 0.40 0.40 0.40 0.21 0.11 3p,-u¢e..p§ne_|:ir NR 0.40 NR NR . NR Redwood NR NR NR NR NR *‘ Preservatives and retentions listed in Table 1 are based on the American Wood Protection Association (AWPA) Book of Standards. NR = Treatments Not Recommended. DECKING REQUIREMENTS All decking material shall be composed of dimension lumber l2" nominal thickness) or span rated decking in accordance with the American Lumber Standard Committee Policyfior Evaluation of Recommended Spansfiir Span Rated Decking Products (November 5, 2004). Attach decking to each joist with 2-8d threaded nails or 2-#8 screws. Space decking boards approximately I/8" apart. See Figure ll for decking connection requirements at the rim joist. Decking may be placed from an angle perpendicular to the joists to an angle of 45 degrees to the joists. Each segment of decking must bear on a minimum of 4 joists (or 4 supports). Decking not meeting these requirements may be substituted when the product has been approved by the authority having jurisdiction. JOIST SIZE The span of a joist is measured from the centerline of bearing at one end of the joist to the centerline of bearii at the other end of the joist and does not include the length of the overhangs. Use Table 2 to determine joist span based on lumber size and joist spacing. See Figure 1 and Figure 2 for joist span types. Table 2. Maximum Joist Spans (LJ) Joist Spacing (o.c.) Without 0verhangs' With Overhangs up to L414: Species Size 12" 16" 24" 12" 1s" 24" Southern Pine 2><1o 17' - 5" 15' - 10" 13' - 1" 15' - 6" 15' - 8" 13' - 1" 2x12 18'- 0" 18' - 0" 15' ~ 5" 18' -9" 18' - 0" 15' ~ 5' Doug,“ Fir, 2:-18 12' - 6" 11' - 1" 9' - 1" 9' - 5" 9' - 5" 9' - 1" Larch, Hem-Fir, 2x10 15' - 8" 13' - 7" 11' - 1" 13' - 7" 13‘ - 7" 11' - 1" SPF3 2x12 18' - 0" 15' - 9" 12'-10" 18' - 0" 15' - 9" 12' -10" Redwood. 2x8 11' - 8" 10' - 7" 8' - 8" 8' - 8" 8' - 6" 8' - 6" gfigigsgegiifrl 2><1o 14' - 11" 13' ~ 0" 10' - 7" 12' - 3" 12' ~ 3" 10' - 7" Rea pine‘ 2x12 17' - 5" 15' - 1" 12' - 4" 15' - 5" 15' - 1" 12' - 4" 1. Assumes 40 psf live load, 10 See Figure 1B. 2. Assumes 40 psf live load, 10 grade, and wet service conditio psf dead toad, L/360 deflection, No. 2 grade, and wet service conditions. psf dead load, U180 cantilever deflection with 220 lb point load, No. 2 ns. See Figure 1A and Figure 2. 3. lncising assumed for refractory species including Douglas fir-larch, hem-fir, and spruce-pine-fir. 4. Design values based on northem species with no incising assumed. American Forest 811 Paper Association Page 8 ‘ 4 ' PRESCRIPTIVE RESID NTIAL WOOD DECK CONSTRUCTION GUIDE I Figure 1A. Joist Span - Deck Attached at House and Bearin_g Over Beam Z/—optionai overhang Misting W3" “““"""' rim joist joist hanger beam (flush,_--= \ tight bearing) joist ‘edger board LJI4 maximum overhang Figure 1B.- Joist Span - Joists Attached at House and to Side of Beam " joist existing wali --—--- H ll ll |~ H H H Ii ll 1| I1 il , beam*--- joist hanger _ joist hanger *Note: beam depth must be equal to or greater than joist ‘edger board depth if joist hangers are used post —-- j__ Joist 3DaI‘l (L4): see Table 2 Figure 2. Joist Span —- Free Standing Deck if optional overhang Ollfiflflal Ovefhangi “_]£1"I][I"_"]| 1! H’ ll 1% n u Ii 1| u |r u LIZIIJEIIJEI" beam --- \ beam —-- (flush, tight joist (flush, tight t - 1 dd bearmg) post bearmg) LJ/4 maximum‘ Joist Span (L4): see Table 2 _ __L_J/4 mflximufi overhang F overhang American Wood Council Page 9 PRESCRIPTIVE RESIDENTIAL WOOD DECK CONSTRUCTION GUIDE BEAM SIZE & ASSEMBLY RE UIREMENTS (however, joists shall not be attached to opposite sides Deck beam spans shall be in accordance with Table 3 Sh: sfTm;..beamé' See JOIST'TO'BEAM CONNECT“: and can extend past the post centerline up to LB/4 as e al S‘ [gum ' shown in Figure 3. Joists may bear on the beam and Where multiple 2x members are used, the deck’s beam assembled by attaching the members identified in Tabl 3 in accordance with Figure 4. [Table R602.3( l )] extend past the beam centerline up to L;/4 as shown in Figures IA and 2, or the joists may attach to the side of the beam with joist hangers as shown in Figure lB Table 3. Deck Beam Spans (L§)' Joist Spans (I-J) Less Than or Equal to: 18' 16' 14' 12' Size‘ Species 2-2x6 2-2x8 2-2x1 0 Southern 2-2x12 Pine 3-2x6 3-2x8 3-2X1 0 12! - 4" 3-2X12 311:6 or 2-2x6 3x8 or 2-2x8 3x10 or 2-2x1 D 3x12 or 2-2x12 4x6 4x8 Douglas - Fir- Larchz, Hem-Fir’, Redwood, SPFZ, 4-X10 8' - '1" 7' - 6" 7' - O" 6' — 7" s'~ 1" 4' -e" c'- 0" 7' — 4" 8‘ — 6" d, U360 simple span beam deflection limit, U180 cantilever deflection limit, No. 2 4x12 Cedars; Ponderosa 3-2x6 Pines, Red 3-2x8 Pine3 s'- 11" 3-2x1 0 3-2x12 Assumes 40 psf live load, 10_psf dead loa grade, and wet service conditions. incising' assumed for refracto l. ry species including Douglas fir-larch, hem-fir. and spruce-pine-fir. em species with no incising 2. Design values based on non 3 h assumed. 4. Beam depth must be equal to or greater thanjoist depth ifjoist hangers are used (see Figure 6, Option 3). Figure 3. Beam Span Types optional overhang (may overhang ' American Forest 8:. Paper Association _n~.tnu _ . 1 1 I _ . -. N. H M a , m : . .l.\._~\ n M jtwmr L, l . m 6 F 3 h 0 ta C .H b 3 8 3 B ‘Hm. T: id. H e 1 r. 8 e U S 5 S C H t...» C w M e O H .1... I_ D. a it S C nu m ..@ 3 a M e .0 D. m 3 \ ammo = 3: M a T .....\ m l % S _A W tr» , D. e if _ W. rm V \.. zit 0 .£. n b S a 8 O nv 5 D. S M .m .m. w .Hu.= rumwn _ m> _ x _ _ m _ _ W“ H _ W ii _ znwmui .._ _| overhang Page 10 O 6 . PRESCRIPTIVE RESIDENTIAL WOOD DECK CONSTRUCTION GUIDE Figure 4. Beam Assembly Details 10d threaded nail or #10 wood 2 threaded nails or screws at each end or screw 23' long. staggered in splice end; splices shall be located only over ,~;-2 rows interior posts (Figure 3) ——q\ \ \\ / f\ t\’ I 1 . I - If a beam is constructed with 3-members. -/ 16" attach each outside member to the inside member as shown here. typical DECK FRAMING PIQAN A framing plan shows the joist and beam layout; the location of the ledger board, posts, and footings, and the type. size, and spacing of the ledger board fasteners. See Figure 5 for a_n example ofa typical deck framing plan. Figure 5. Typical Deck Framing Plan Lumber species: (see Table 1) N $3 .._ k Ba Vi-'|ndow§ board with ’/=3“ dia. 2 § L “ ‘ ‘ ‘ ‘ \ 7": . boltsIlag.screws!an_c;hors E _ 5 r :1 r" "1 r' "H @ ____“ on center Q) ' i ,° (see Table 5) 3 2°. _ joist hangen lbs C ii _9__ <9 double or triple -3 (see Tame 3A) 3 -1 1:". 5X5 _ x _ trimmer .2 (ii $3! P081 (see Figure 35) k trimmer hanger: lbs jg / _,- K‘ /-"‘-\‘ (see Table 7) ’ : 2 i ‘"1 2 2;; m ~__~ L X ~__‘_ J} rimjoist C . .. S E "j 2% stair stringers: cut or solid L— round or square footing: see Table 4 -J rr,-5;“-e*'2'8) LBI4 max. (___"dia. or ___" x __") x ____" thick - ___" deep LBI4 mam —cfli----W}---If -p--Q---~*--w overhang . beam span (Le): see Table 3 overhang ‘reads? - 1" - singie, double, or triple ___ x __; Ls = ____' ~ __ " (See Tame 6) American Wood Council Page 11 PRESCRIPTIVE RESIDENTIAL WOOD DECK CONSTRUCTION GUIDE JOIST-TO-BEAM CONNECTION Each joist shall be attached to the beam as shown in Figure 6. Joists may bear on and overhang past the beam a maximum of L1/4. Use Option l or Option 2 to attach the joist to the beam. Option l shall only be used if the deck is attached to the house with a ledger (see LEDGER ATTACHMENT REQUIREMENTS) or as shown in Figure 23. Mechanical fasteners or hurricane clips used as shown in Option 2 must have a minimum capacity of 100 lbs in both uplift and lateral load directions. Joists may also attach to the side of the beam with joist hangers per Option 3 (however, joists shall no be attached to opposite sides of the same beam). See J OIST HANGERS for more information. Hangers, clips and mechanical fasteners shall be galvanized or stainles: steel (see MINIMUM REQUIREMENTS). Figure 6. Joist-to-Beam Detail 3_3d threaded OPTlGN 1" I OPTION 2” OPTION 3" we “ans mechanical (3 on one side’ fastener or us‘ top of beam and joist 1 th th hurricane clip I must be at same on 9 O er) ha"9e" elevation *Option 1 ,, , ,1 .. shall only be /I L = used if deck =- P IS Bttafihed 8 beam 8 to house ' “ “see manufacturer's recommendations for additional requirements lrn:a tistaanitas. w*eoe- as consancnrr aei_ea Figure 13A. Wood I-Joist Profile include 1" or thicker engineered wood products (EWP) — such as oriented strand board (OSB) or structural composite lumber (SCL) including laminated veneer lumber (LVL) — as band joists (or rim boards) that can support the attachment of a deck (see Figure 14). i However, some older homes might be constructed with band boards that are too thin (less than l") to support a deck. In such cases, a free-standing deck or a full plan submission is required. MANUFACTURED WOOD TRUSS: A metal plate connected wood truss (MPCWT) is an engineered, prefabricated structural component designed for each specific application. MPCWT’s used in residential floors are often installed with a 2x4 lumber “ribbon” at the ends of the trusses {see Figure 13B) to tie the ends of the trusses together. The ribbon board, by itself, is not intended to support the deck ledger and deck. Installing residential decks when the floor system for the house uses MPCWT requires a standard detail provided by the truss designer, a free-standing deck, or a filll plan submission. Refer to the WTCA Technical Note - Attachmenr of Residential Decks to Wood Truss Floor Systems for special blocking details and attachment requirements (\wn.v.sbcindustgg.com). Figure 13B. Metal Plate Connected (MPC) Wood Floor Trusses with a 2x4 Lumber "Ribbon” at the Ends of the Trusses 2x4 RIBBON BOARD - not intended. for deck attachment - .. t MPC FLOOR rnusses ____',,..-- FOUNDATION WALL American Wood Council Page 15 PRESCRIPTIVE nesroenn ' DECK CONSTRUCTION euros Figure 14. General Attachment of Ledger Board to Band Joist or Rim Board _ , —H\:— remove siding at ledger ext°"°r 5heam‘"9 "—""""‘ prior to installation threshold carefully flashed and caulked to prevent water intrusion continuous flashing existing stud wall -—---an- existing 2x band joist or 1" minimum \. EWP - be d _ extending past joist Hm ar I hanger 2" min.“ //-—-deck joist 1-5/3" min. tr" 5" max 1/2 u terl _ . -— " iame sg 2x floor joist, Z 2 mm‘ screws or . _‘ throug it-bolls with 9|’ - . - _ washers . ' i - joist hanger ziifitragfion Wan '. fi-f, ' 2x ledger board; must he greater than or equal to the depth of the deck joist and no greater than the depth of the band joist Figure 15. Attachment of Ledgg Board to Foundation Wall (Concrete or Solid Masonry) __ ___ embed anchors per manufacturer ~ - U ' / recommendations to resist corrosion and decay, /_ this area should be caulked H /— deck joist existing concrete --+- or solid masonry wall "-112" diameter _ approved expansion. ‘ ' - - epoxy, or adhesive .' " ; anchors with washers r. - _, _ joist hanger V4 2x iedger board; must be greater than or equai to the size of the joist Figure 16. Attachment of Ledger Board to Foundation Wall (Hollow Masonry) embed anchors _ _ to resist corrosion and per manufacturer _ _ recommendations ‘ decay, {HIS area ShOl.lId be cauil-ted _ _ deck joist existing hollow ll masonry wa 1/2" diameter approved block cells filled eP°"Y °’ aF*h"'**"“"° Wm.‘ gm“: or anchors with washers concrete at _ anchor iocations 1055* "W99? (new ‘7°"3t‘“°"°") j-=4->l 2x ledger board; must be greater 8" block wall than or squat to the size of the joist minimum American Forest & Paper Association Page 16 aessietive R!£SiBEN'¥¥A!.. wetiiseit cemsteeerteu cease PROHIBITED LEDGER ATTACHMENTS deck shall be free-standing (see FREE-STANDING Attachments to exterior veneers (brick, masonry, stone) DECKS). and to cantilevered floor overhangs or bay windows are prohibited (see Figures 17 and 18}. In such cases the Figure 17. No Attachment to or Through Figure 18. No Attachment to House Overhang Exterior Veneers (Brick, Masonry, Stone) S . i ' chimney LEDGER BOARD FASTENERS nominal lumber band joist (1-W‘ actual) or EWP rim Only those fasteners noted below are permitted. LEAD ‘board bearing on a sill plate or wall plate shall be ANCHORS ARE PROHIBITED. constructed with %=" lag screws or bolts with washers per Table 5 and Figure 19 (see MINIMUM Deck ledger connection to band joist or rim board. REQUIREMENTS). The connection between a deck ledger and a 2-inch Table 5. Fastener Spacing for a Southern Pine? Douglas Fir-Larch, or Hem-Fir Deck Ledger and a 2-inch Nominal Solid-Sewn Spruce-Pine-Firm Band Joist or EWP Rim Board“ (Deck Live Load = 40 psf, Deck Dead Load = 10 psi)“ Rim Board 6'-0“ 6'-1" 8'-1" 1 0'-1" 1 2'-1" ‘l4'—'l " 1 6'-1" Joist Span or and to to to to to to Band Joist less 3'-o" 10'-0" 12'-o" 14'-0" 16'-0" 1a'-0" Connection Details On-Center Spacifi of Fasteners“ 1/Er" diameter lag screw with FWP6 6 24: 18: 14: 12: 10: 95.. “I32” maximum sheathing‘ 1' "5 EWP 79 28,, 21,, 16,, 14,, 12.. 1 .. ,, 1-‘/1" Lumber ' 30 23 18 15 13 11 10 ‘/2" diameter bolt with 1," FWP6 5 24: 18: 14: 12: 10: 1%,, 15132" maximum sheathing 1' /B EWP ,9 28,, 21,, 16,, 14,, 12,, .. ,. 1-W‘ Lumber ' 36 36 34 29 24 21 19 15 ’/2" diameter bolt with 1" EWPB 24" 13" 14" 12" 10" 9" 3" Ia" maxim um sheathing and 1-‘/B" EWP6 2a" 21 " 16" 14" 12" 10" 9" Stacked Washers ' 1-1/2" Lum berm as" as" 29" 24" 21" 1a" 16" The tip of the lag screw shall fully extend beyond the inside face of the band joist. The maximum gap between the face of the ledger board and face of the wail sheathing shall be V2". Ledgers shall be flashed or caulked to prevent water from contacting the house band joist (see Figures 14, 15, and 16). Lag screws and bolts shall be staggered per Figure 19. Deck ledgers shall be minimum 2x8 pressure—preservative-treated No.2 grade lumber, or other approved materials as established by standard engineering practice. When solid-sawn pressure-preservative-treated deck ledgers are attached to engineered wood products (minimum 1" thick wood structural panel band joist or structural composite lumber including laminated veneer lumber), the ledger attachment shall be designed in accordance with accepted engineering practice. Tabulated values based on 300 lbs and 350 lbs for 1" and 1-1/5" EWP rim board, respectively. 7 A minimum 1."x9'/2" Douglas fir-larch laminated veneer lumber rim board shall be permitted in lieu of the 2" nominal band joist. B Wood structural panel sheathing, gypsum board sheathing, or foam sheathing not exceeding one inch thickness shall be permitted. The maximum distance between the face of the ledger board and the face of the band joist shall be one inch. Fastener spacing also applies to southern pine, Douglas fir-larch, and hem—fir band joists. American Wood Council Page 17 Placement of lag screws or bolts in deck ledgers The lag screws or bolts shall be placed as shown in Figure I9. The lag screws or bolts shall be staggered from the top to the bottom along the horizontal run of PRESCRIPTIVE RESIENTIAL WOOD ECK CONSTRUCTION GUIDE the deck ledger (see Figure l9). Proper installation of la screws or bolts shall be verified by the authority having jurisdiction. Figure 19: Ledger Board Fastener Spacing and Clearances See Table 5 at —-1: e_-I----~ l o o-- 5" max. F stagger fasteners in 2 rows See Figure 14 for rim joist fastener spacing l 5.5" min. for 2>

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