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MyBuitdingPermit.com <br /> a service of eCrtyGov.net Construction Tip Sheet 05 <br /> Maximum Deck Post Height <br /> Tributary Area e <br /> Post 20 40 60 80 I 100 120 140 160 <br /> Size c,d Maximum Deck Post Height a(feet-inches) <br /> 4x4 10-0 10-0 8-7 7-0 5-8 4-1 NP NP <br /> 4x6 14-0 13-10 11-1 9-5 8-2 7-3 6-4 5-4 <br /> 6x6 14-0 14-0 14-0 14-0 14-0 13-3 10-9 6-11 <br /> 8x8 14-0 14-0 14-0 14-0 14-0 14-0 14-0 14-0 <br /> a. Measured from the underside of the beam to top of footing. <br /> b. Based on Doug Fir, Hem Fir and Spruce-Pine-Fir, No. 2 grade, wet service factor. <br /> c. Notched deck posts shall be sized to accommodate beam size. <br /> d. Includes incising factor. <br /> e. Area, in square feet, of deck surface supported by post and footing. <br /> Footing Size a <br /> Diameter of a <br /> Side of Square Thickness <br /> b <br /> Tributary Area Round Footing Footin inches (inches) <br /> g ( ) (inches) <br /> 5 7 8 6 <br /> 20 12 14 6 <br /> 40 18 20 6 <br /> 60 21 24 8 <br /> 80 25 28 9 <br /> 100 28 31 11 <br /> 120 30 34 12 <br /> 140 33 37 13 <br /> 160 35 40 15 <br /> a. Footing dimensions shall allow complete bearing of the post. <br /> b. Area, in square feet, of deck surface supported by post and footings. <br /> 12"min.frost depth Manufactured post connector / Typical P.T.post <br /> in allowable soils <br /> 12 <br /> Grade *1 1�" a—, • <br /> -1II III-1Il-1II. -1I1=1II-1IC.° 1-T=1II:.°.: . ^ .. -�II1=1I1-1II ;II1 feil• a I. . I-1I <br /> Thickness : � < o 0 a <br /> per Table a `< °.A. . . . <br /> Width 1/2"diameter <br /> Note:Posts must be per through-bolts in both 4"gravel Min.12"of <br /> centered on or in footing Table directions embedment <br /> Note:not screws <br /> January 14,2022 MyBuildingPermit.com I Basic Deck <br /> CCtyGov.net <br /> 2005. ecir,GerAlilarme <br />