1. Estimate the floor and roof dead loads and provide a load summation table sho

Question

1. Estimate the floor and roof dead loads and provide a load summation table showing each item. 2. Determine the basic floor and roof live loads using ASCE 7 Common Roof Dead Loads in Steel Buildings 5 psf to 8 psf 2 psf 2 psf (11/ "deck) 3 psf (3 deck) 6 psf (7 ½ "deck) Framing (self-weight) Fireproofing Metal deck 5 ply membrane roofing with gravel ballast 6.5 psf Rigid insulation Plywood sheathing 14" asphalt shingles Suspended ceiling Mechanicallelectrical components 1.5 psf per inch of thickness 0.4 psf per 1/s"thickness 2.0 psf 2.0 psf 5 psf to 10 psf Common Floor Dead Loads in Steel Buildings Framing (self-weight) Fireproofing Metal deck 6 psf to 12 psf 2 psf 1psf (A6"deck) 2 psf (1 ½ "deck) 3 psf (3" deck) Concrete 10 psf per inch of thickness 12.5 psf per inch of thickness see deck manufacturers catalog lightweight normal weight w/metal deck Floor finishes 1/ "ceramic tile 1 slate Gypsum fill /s"hardwood 10 psf 15 psf 6.0 psf per inch of thickness 4.0 psf 15 psf 2.0 psf Partitions Suspended ceiling Mechanical/electrical components5 psf to 10 psf

Explanation / Answer

Taking maximum of load given for being conservative

Question 1

Roof Dead load = 8+2+2+3+6+6.5+1.5+0.4+2+2+10 = 43.4 psf

Floor Dead Load = 12+2+1+2+3+10+12.5+2+10+15+6+4+15+2+10 = 106.5 psf

These are nominal dead load. We need to multiply these with factor depending on which load combination is governing

Question 2

A basic Roof Live load of 20 psf can be used

Floor Live Load can vary from 40 psf to 250 psf depending on the use of area A basic live load of 60 psf can be used in general.

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