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4 CUSTOM DESIGN & ENGINEERING, INC <br /> STRUCTURAL ANALYSIS & DESIGN <br /> Calculations for supporting structure for pre-manufactured railing and <br /> . posts <br /> This document contains substantiation for the supporting structure of a pre-manufactured railing <br /> system. The deck plan is shown below Figure 1. The posts are centered 51 inches on center. The <br /> existing framing are TJI joists and floor sheathing. <br /> detail B <br /> ei i 1 1 ii <br /> 1 Existing joists 16"o.c. r <br /> detail A <br /> + I y F +detailA <br /> (Existing garage with rooftop deck) <br /> 4 1 <br /> J L <br /> 51"typical <br /> - 1 �� <br /> 1 1 <br /> detail C (Existing wood deck) (Existing gutter and <br /> -► drain to street) <br /> Figure 1 -Deck Plan <br /> Figure 2 and Figure 3 below shows the pre-manufactured <br /> �e' `�,xwa ou' <br /> y i-".,tih 2 <br /> J n 23, 2019 <br /> A� � 36923 t�' <y`'� <br /> S' OVAL 6 <br /> 11006 60TH AVE WEST- MUKILTEO WA 98275 <br /> PHONE(425)343-7517- FAX (425)493-8388 <br />