A simply supported composite beam with a 3.6 m span supports a triangularly distributed load of peak intensity q0 at midspan (see figure part a). The beam is constructed of two wood joists, each 51 mm x 280 mm, fastened to two steel plates, one of dimensions 5 mm x 80 mm, and the lower plate of dimensions 5 mm x 120 mm, (see figure part b). The modulus of elasticity for the wood is 11 GPa and for the steel is 210 GPa. If the allowable stresses are 7 MPa for the wood and 120 MPa for the steel, find the allowable peak load intensity q0,max when the beam is bent about the z axis. Neglect the weight of the beam. Round to two decimal places. q0,max = __ kN/m
A simply supported composite beam with a 3.6 m span supports a triangularly distributed load of peak intensity q0 at midspan (see figure part a). The beam is constructed of two wood joists, each 51 mm x 280 mm, fastened to two steel plates, one of dimensions 5 mm x 80 mm, and the lower plate of dimensions 5 mm x 120 mm, (see figure part b). The modulus of elasticity for the wood is 11 GPa and for the steel is 210 GPa. If the allowable stresses are 7 MPa for the wood and 120 MPa for the steel, find the allowable peak load intensity q0,max when the beam is bent about the z axis. Neglect the weight of the beam. Round to two decimal places. q0,max = __ kN/m
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A simply supported composite beam with a 3.6 m span supports a triangularly distributed load of peak intensity q0 at midspan (see figure part a). The beam is constructed of two wood joists, each 51 mm x 280 mm, fastened to two steel plates, one of dimensions 5 mm x 80 mm, and the lower plate of dimensions 5 mm x 120 mm, (see figure part b). The modulus of elasticity for the wood is 11 GPa and for the steel is 210 GPa.
If the allowable stresses are 7 MPa for the wood and 120 MPa for the steel, find the allowable peak load intensity q0,max when the beam is bent about the z axis. Neglect the weight of the beam. Round to two decimal places.
q0,max = __ kN/m
Transcribed Image Text:5 mm x 80 mm
steel plate
51 mm X 280 mm
wood joist
280 mm
go
5 mm x 120 mm
steel plate.
1.8 m
1.8 m
B
(a)
(b)
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