•ROOFINGE

SHEATHING

-ROOF BEAM

(20%) Problem 5 :

Design a Southern Pine No. 1 beam to carry the loads shown (roof beam, no plaster). Assume the

beam is supported at each end by an eight-inch block wall. Consider bending, shear and

deflection. The allowable deflection is (1/240) of the span length for total load.

Fb = 1,550 psi; Fv = 110 psi; E = 1.6 x106 psi

-PURLINS

-8' BLOCK

WALL

1750#

1750#

51

1000#

w=100 plf

1250#

250#

1000#

8712.5 #-ft

250#

5'

1250#

5

LO

Roof beam loading details

1750#

'V'

1750#

'M'