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GRAVITEC <br /> SYSTEMS INC" <br /> I. Design Basis <br /> General Requirements: 68ft Overhead Rigid Rail System <br /> Fall Protection Loads: <br /> Minimum Factor of Safety: 2.0 <br /> Max System Users: 2 <br /> Average Arrest Force(AAF): 1350 lbs For ANSI 2359.14 Class 1 Device <br /> Max.Worker Weight: 310 lbs Worker weight includes tools directly connected to their harness. <br /> Total System Design Load: 1800 lbs Load Consider for Vertical,Side,and End Falls(Max 30°Angle) <br /> Design Codes: <br /> Industry Safety: Labor and Industries(L&I)WAC 296-880 Unified Fall Protection <br /> Fall Protection: ANSI/ASSP Z359.6-2017 Fall Protection Code <br /> Steel Design: AISC 360-16 and Steel <br /> Materials: <br /> ASTM Steel Plates and Bars,Fy=36ksi <br /> ASTM Rectangular MSS,Fy=46ksi <br /> Notes: <br /> 1: Fall Protection Loads are Considered Live Loads. <br /> 2: AISC allowable stress design includes a Factor of Safety 0=1.67. To meet WAC requirement <br /> of"a safety factor of at least 2"on engineered fall protection systems,all factors of safety are <br /> increased to 2.0 unless combined with other live loads or wind/seismic loads. <br /> 3: Design based off plans original structural building drawings by NCI Steel Building Systems, <br /> Inc.of"PUD Vehicle Wash Facility",dated February 7,1997. <br /> Loading: <br /> A: Deadload,D DL=11.14 Self-weight of Rigid Rail <br /> B: Fall Protection Load,I Self-weight of Rigid Rail, <br /> Pu= 1.35k Max.Arrest Force <br /> Ph= 2.895k Rigid Rail Anchor Load <br /> 21291 Urdahl Road NW • Poulsbo,WA 98370.206.780.2898•www.gravitec.com 8/7/2023 <br /> I 3D <br />