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10179420_305 E. 4TH - Plan
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10179420_305 E. 4TH - Plan
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Last modified
5/7/2021 3:45:37 PM
Creation date
10/25/2020 5:16:04 PM
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Plan
Permit Number
10179420
Full Address
305 E Fourth St
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II: ASSEMBLY WITH SWAY FORCES <br />Loading E#ects <br />The following outlines the live load requirements according to three different Codes, namely: <br />(1) Uniform Building Code (U.B.C.), 1993 <br />(2) BOCA National Building Code (BOCA), 1993and (3) The German DIN-4112, <br />1. Vertical (Gravity) Load, psf <br />Stage Enclosed Assembly AruAreaPlatformFixed Seats Movable Seats <br />DIN-4112 104 104 160U.B.C.125 4'125 50 100BOCA150100 50 100 <br />also 120 lb/ft on footboard and seat <br />boards shall be used. <br />U. Horizontal (Sway Loads) <br />BOCA: Grandstands, stadiyn and similar assembly structures,shall be designed for lateralsway bracing loads of 24 pounds per linef foot parallel to and 10 #Ands per linear footperpendicular to seats and footboards. <br />Handrails shall be designed and constructed for a concentrated load of 200 tb. applied at anypoint and in any direction. Handrails shall also be designed for a uniform load of 50 Ib/ftapplied in any direction. The concentrated and uniform loading conditions shall not beapplied simultaneously. <br />DIN-41 12: A horizontal component force acting at floor level in the most unfavourabledirection shall be entered in the calculation in addition to any eventual wind force. Thishorizontal component force shall be assumed at one tentb ofthe imposed gravity tod. <br />Design for worst condition <br />Based on 24 tb/ft over a board width of 1.5 ft., leads to 16 psf of horizontal force per squarefoot of all area. Also DIN-4112 consider 160/10 = 16 psf. The area to be considered is32,02. <br />Consider diagonals to work in tension and in compression. This is recommended rather thandisregarding the buckled compression member in order to avoid sudden change in the
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