Maximum live load = 150 psf

Typical live load = 50 psf

Maximum span = 27.3 ft

Typical span = 20 ft

Gross Area of building = 585,328 sf

Mechanical Penthouse Area = 7,560 sf

• Concrete Dead Load = 145 psf

• Note that the upper two floors of the structure are designed with steel rather than concrete to make more room for equipment. 

  • (585,328 sf - 7,560 sf = 577,768 sf)

Estimation of Concrete Dead Load = 145 psf x 577,768 sf = 83,776,360 lb

• Steel Dead Load = 490 psf

Estimation of Steel Dead Load = 490 psf x 7,560 sf = 3,704,400 lb

Total Dead Load = 87,480,760 lb

Area of roof = 41,549 sf

1 inch Snow Load = 5.2 sf

Possible Snow Load = 216,055 lb.