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... , .., <br /> 411 • <br /> Bldg.40-24 <br /> 2nd Floor Mezzanine at LS/4.5-K/S <br /> Evaluation for Stairs Platform Loads <br /> Per Drawing mis123-live load=50 PSF,OK for maintenance workers <br /> Stairs platform dimensions Unit Loads Concentrated <br /> Width Length D L P1 <br /> (ft) (it) (PSF) (PSF) (ths.) <br /> 6.00 14.00 6.00 50.00 300 <br /> Platform is.supported on restroom walls below,unsupported span for <br /> metal side beams(800S+800T sections combined)is 10.75' <br /> Calculations consider the controlling moment and shear between distributed live load and concentrated <br /> point load due to a worker with tools at the location where largest bending and shear is induced. <br /> Joist and*Ai?Beam Evaluation <br /> Member Span Spacing viD wt. MD ML Mpl M V <br /> (Ft) (Ft) (PLF) (PLF) (C) (K) <br /> Joist 6.00 1.33 8.00 66.67 0.04 0.30 0.45 0.49 0.17 <br /> Side Sec 1 10.75 6.00 <br /> Side Sec 2 10.75 6.00 <br /> Side Beam 10.75 6.00 18.00 150.00 0.26 2.17 0.81 2.43 0.10 <br /> Cantilever 2.25 6.00 36.00 300.00 0.02 0.19 0.17 0.21 0.17 <br /> Member Section Ma MIMa Va V/Va <br /> (K) <br /> Joist 4005162-43 0.69 0.71 0.81 0.21 OK <br /> Side Sec 1 800S162-43 1.53 1.05 <br /> Side Sec 2 500TIS0-43 1.08 1.03 <br /> Side Beam Si-T Sections' 2 61 0.93 2.08 0.05 OK <br /> Cantilever &ft sections 2.61 0.08 2.08 0.08 OK <br />