allon; of bituminouscoal, 50 pounds per cubic feet; of anthracite coal, 60 pounds percubic feet. The weights of elevators are usually given by the manufacturerfor the particular situation. An impact allowance of 100 per centis applied to these weights in designing the beams and their connec-tions… … 300 STEEL CONSTRI CTION For the roof, per sq. ft. 25 lb For 2nd to 10th floor, per sq. ft. 50 lb For 1st floor, per sq. ft. 100 lb For sidewalks, per sq. ft. 150 lb For freight receiving room, per sq. ft. 150 lb. For stairs, per sq. ft. 100 lb. The speeial loads are the elevator loads as indicated…
Building, Iron and steel · Steel, Structural · Theses
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