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• . FLOORS <br /> TABLE R507.2 <br /> FASTENER SPACING FOR A SOUTHERN PINE OR HEM-FIR DECK LEDGER AND <br /> A 2-INCH-NOMINAL SOLID-SAWN SPRUCE-PINE-FIR BAND JOIST"- <br /> (Deck live load=40 psf,deck dead load=10 psf) <br /> JOIST SPAN 6'and less 6'1"to 8' 8,1"to io 10'1"W12' 12'1"to 14' 14'1"to 16' 16'1"to 18' <br /> Connection details On-center spacing of fasteners'- <br /> '/,inch diameter lag screw with t'/3,inch 30 23 18 15 13 11 10 <br /> maximum sheathing' <br /> V.inch diameter bolt with's/3,inch maximum 36 36 34 29 2.4 21 19 <br /> sheathing <br /> '/,inch diameter bolt with 15/3,inch maximum 36 36 29 24 21 18 16 <br /> sheathing and '/,inch stacked washers <br /> For SI: 1 inch=25.4 mm, I foot=304.8 mm. I pound per square foot=0.0479 kPa. <br /> a. The tip of the lag screw shall fully extend beyond the inside face of the band joist. <br /> b. The maximum gap between the face of the ledger board and face of the wall sheathing shall be'/,inch. <br /> c. Ledeers shall be flashed to prevent water from contacting the house band joist. <br /> d. Lag screws and bolts shall be staggered in accordance with Section R507.2.I. <br /> e. Deck ledger shall be minimum 2 x 8 pressure-preservative-treated No.2 grade lumber,or other approved materials as established by standard engineering <br /> practice. <br /> f. When solid-sawn pressure-preservative-treated deck ledgers are attached to a minimum 1-inch-thick engineered wood product(structural composite lumber. <br /> laminated veneer lumber or wood structural panel band joist),the ledger attachment shall be designed in accordance with accepted engineering practice. <br /> g. A minimum I x 9'/,Douglas Fir laminated veneer lumber rimboard shall be permitted in lieu of the 2-inch nominal band joist. <br /> It. Wood structural panel sheathing,gypsum board sheathing or foam sheathing not exceeding 1 inch in thickness shall be permitted.The maximum distance <br /> between the face of the ledger board and the face of the band joist shall be 1 inch. <br /> TABLE 507.2.1 <br /> PLACEMENT OF LAG SCREWS AND BOLTS IN DECK LEDGERS AND BAND JOISTS <br /> MINIMUM END AND EDGE DISTANCES AND SPACING BETWEEN ROWS <br /> TOP EDGE BOTTOM EDGE ENDS ROW SPACING <br /> Ledger' 2 inches' /,inch 2 inches' I%inchess <br /> Band Joist` 3/,inch 2 inches 2 inches° 15/s inches <br /> For SI: 1 inch=25.4 nim. <br /> a. Lag screws or bolts shall be staggered from the top to the bottom along the horizontal run of the deck ledger in accordance with Figure R507.2.1(1). <br /> b. Maximum 5 inches. <br /> c. For engineered rim joists,the manufacturer's recommendations shall govern. <br /> d. The minimum distance from bottom row of lag screws or bolts to the top edge of the ledger shall be in accordance with Figure R507.2.1(1). <br /> Z STAGGER FASTENERS <br /> "t ZE IN 2 ROWS <br /> 5.5"MIN.FOR 2 X 8' 'DISTANCE SHALL BE PERMITTED TO <br /> 5"MAX. 6.5"MIN.FOR 2 X 10 BE REDUCED TO 4.5"IF LAG SCREWS <br /> 4LAG <br /> 7.5"MIN.FOR 2 X 12 ARE USED OR BOLT SPACING IS <br /> REDUCED TO THAT OF LAG SCREWS <br /> TO ATTACH 2 X 8 LEDGERS TO 2 X 8 <br /> 2"MIN. BANG JOISTS. <br /> LEDGER SCREW OR BOLT 3/4"MIN. <br /> For SI: 1 inch=25.4 mm. <br /> FIGURE 8507.2.1(1) <br /> PLACEMENT OF LAG SCREWS AND BOLTS IN LEDGERS <br /> 2012 INTERNATIONAL RESIDENTIAL CODE '�� <br />