The roof framing plan of the industrial building shown in Fig. 2.D. Roof slope is in./ft. General construction: Roofing—5-ply felt Sheathing— -in. plywood Subpurlin— Purlin— Girder— Assume loads are...

The roof framing plan of the industrial building shown in Fig. 2.D. Roof slope is in./ft. General construction:

Roofing—5-ply felt

Sheathing— -in. plywood

Subpurlin—

Purlin—

Girder—

Assume loads are uniformly distributed on supporting members.

Fig. 2.D

Find: a. Average dead load D of entire roof in psf

b. Tributary dead load D to subpurlin in lb/ft

c. Tributary dead load D to purlin in lb/ft

d. Tributary dead load D to girder in lb/ft

e. Tributary dead load D to column C1 in k

f. Basic (i.e., consider roof slope but not tributary area) unit roof live load Lr in psf

g. Rain load R in psf at roof low point, assuming that the height of water to the secondary drain system (overflow scupper) ds is 5 in. and the hydraulic head dh at the scupper at design flow is 0.5 in.