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�MyBui [di ngPermit.com <br />a service of eCityGov.net Construction Tip Sheet 05 <br />Basic Deck <br />This tip sheet reflects code requirements of the 2018 International Residential Code (IRC) with <br />Washington State Amendments. <br />Typical Deck <br />This document provides building code information applicable to prescriptive residential wood <br />deck design. You may need to hire a licensed architect or engineer to design a deck where any of <br />the following conditions apply: <br />• The deck serves other than a one- or two-family dwelling building <br />• The deck design includes more than one level <br />• The deck will support a hot tub, spa or other heavy object, including heavy deck covering (such <br />as pavers) <br />• The walking surface is more than 14 feet above grade <br />• The deck ledger is attached to house overhangs, bay windows, bricks, stone, or concrete block <br />• The deck is bearing on ground with a slope greater than 1 foot horizontal for every 1 foot <br />vertical <br />• The deck is self-supporting (not attached to an exterior wall) <br />Ledger, <br />See Detail r to, ledger <br />connection options <br />Joist <br />Decking <br />ver, span ratings of <br />proposod docking. <br />Joist Overhang <br />24' mximum. <br />Joist Spacing <br />See span table and <br />tooting schedule. <br />4x4 min up to 8' 0' height <br />54 min. up to 10'0' height <br />Non -corrosive metal <br />post/beam connector <br />Continuous solid blocking <br />between joists <br />Beam Overhang <br />24" maximum <br />Note: Guards are <br />required when the deck <br />walking surface is more <br />than 30" above grade. <br />January 14, 2022 MyBuildingPermit.com I Basic Deck <br />KityGov.net <br />2006 ic' aClty o hliance <br />