Laserfiche WebLink
16 PRESCRIPTIVE RESIDENTIAL WOOD DECK CONSTRUCTION GUIDE <br /> Placement of lag screws or bolts in deck ledgers the deck ledger(see Figure 19). Proper installation of lag <br /> The lag screws or bolts shall be placed as shown in screws or bolts shall be verified by the authority having <br /> Figure 19.The lag screws or bolts shall be staggered jurisdiction. <br /> from the top to the bottom along the horizontal run of <br /> Figure 19. Ledger Board Fastener Spacing and Clearances. <br /> v c <br /> stato er fasteners . for <br /> See Table 6 (".17E irr"IDWia. See Figure 14 rTIM <br /> '.."-- <br /> IIIjoist fastener spacing <br /> II ...000.°' <br /> ar rrort,1,4_, _4.-., litstancezarr be reduced to 4,5 <br /> 5"max. <br /> 6,51'Min,for 2X19 if tag screws are used or bolt <br /> III 6 <br /> Citt 0 ® 0 7.5''Ort,for 2xt 2 spacing le reduced to of <br /> laqiurows tbandob 2x8 <br /> ~ <br /> r mkt, lag screw,through-bolt,or -— , ‘ teCglete' to 2x8 ban:1010s(lir <br /> i.' gitDdVastors not permitted) <br /> tedger Basher with washer 4140nun, <br /> Through-Bolts manufacturer's recommendations.All anchors must have <br /> Through-bolts shall have a diameter of 1/2". Pilot holes washers. <br /> for through-bolts shall be '7/32" to 9/16" in diameter. <br /> Through-bolts require washers at the bolt head and nut. Lag Screws <br /> Lag screws shall have a diameter of 1/2" (see MINIMUM <br /> Expansion and Adhesive Anchors REQUIREMENTS). Lag screws may be used only when <br /> Use approved expansion or adhesive anchors when the field conditions conform to those shown in Figure <br /> attaching a ledger board to a concrete or solid masonry 14. See Figure 20 for lag screw length and shank <br /> wall as shown in Figure 15.Expansion and adhesive requirements.All lag screws shall be installed with <br /> anchor bolts shall have a diameter of 1/2". Minimum washers. <br /> spacing and embedment length shall be per the <br /> Figure 20. Lag Screw Requirements. <br /> 4 1 ,isa,totewatn behot. <br /> .,1r/0 •'.. ' . or <br /> screw <br /> 1-Ii2"shook - •, must---- . ' . .' a minimum oft.' <br /> (00 iti -=' < .0. ,i, ,,. <br /> Lag screw installation requirements: Each lag screw The threaded portion of the lag screw shall be inserted <br /> shall have pilot holes drilled as follows: 1) Drill a 1/2" into the pilot hole by turning. DO NOT DRIVE LAG <br /> diameter hole in the ledger board,2) Drill a-716" SCREWS WITH A HAMMER. Use soap or a wood- <br /> diameter hole into the band board of the house. DO NOT compatible lubricant as required to facilitate tightening. <br /> DRILL A 1/2" DIAMETER HOLE INTO THE BAND Each lag screw shall be thoroughly tightened (snug but <br /> BOARD. not over-tightened to avoid wood damage). <br /> American Wood Council -- <br />