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PRESCRIPTIVE RESIDENTIAL WOOD DECK CONSTRUCTION GUIDE 23 <br /> FRAMING AT CHIMNEY OR BAY WINDOW shown in Figure 1B.Joist hangers shall each have a <br /> All members at a chimney or bay window shall be minimum vertical capacity in accordance with Table 7. <br /> Bolts,screws,or lag screws used to attach the hanger to <br /> framed in accordance with Figure 35. Headers may span <br /> a maximum of 6'-0". When a chimney or bay window is the ledger shall fully extend through the ledger into the <br /> wider than 6`-0",one or more 6x6 posts may be added to 2-inch nominal lumber band joist(1-1/2" actual)or EWP <br /> . <br /> reduce header spans to less than 6'-0". In such cases,the rim joistOtherwise a non-ledger deck is required. <br /> post footing must meet the requirements in the <br /> FOOTINGS section. Headers shall be located no more Table 7. Trimmer Joist Hanger Vertical Capacity. <br /> than 3'-0" from the end of the trimmer joist. <br /> Joist Size Minimum Capacity, lbs <br /> Triple trimmer joists are required on each side of the 2x6 870 <br /> header if joist spacing is 12" or 16" o.c. or if the trimmer <br /> joist span exceeds 8'-6"; otherwise, double trimmer joists 2x8 1155 <br /> are permitted.Trimmer joists may bear on the beam and• 2x10 1420 <br /> extend past the beam centerline up to the lesser of Lo or <br /> L/4 as shown in Figures 1A and 2,or the trimmer joist 2x12 1575 <br /> may attach to the side of the beam with joist hangers as <br /> Figure 35. Detail for Framing Around a Chimney or Bay Window. <br /> .--,a zP 3-6"'maximum <br /> triple joist <br /> I. erI7 <br /> hanger, <br /> .typical <br /> de <br /> may <br /> - . Maximum <br /> Tel extend 6*maximum <br /> f //74 17/4 /7/ <br /> chorrow or 7, chimney <br /> //, 01:_,bay 04 of, WNW * Bolts,screws.,or lag <br /> toy window <br /> ,,,,,i,,, ,<_,,„,,,/,:; ledger "'maw V V V screws shall fully <br /> Afi.,- k-We' 7-797/te--,.4 board ' w to) extend into band <br /> lr „ <br /> lif _ ii <br /> r r i <br /> ts, joist or rim board <br /> At <br /> triple trimmer i double jOiSt double header (10 diameter th,rough-bolt <br /> Joist each%de hanger;4'0001 or lag SCAMS at iz.4, <br /> *Trimmer joist may be double if joists are spaced *S;-: Figure la for fastener spacing], <br /> 24"04 or If trimmer length is 8'76*or leas . edge,and end distances <br /> PLAN view SECTION <br /> -s•P <br /> / -------Th <br /> -.... <br /> CI 1 1-- 14441-1_ <br /> American Wood Council •0" .'‹ <br />