A 6-m simply supported timber beam is to be designed to carry a total uniformly load throughout its entire span of 25 kN/m including its own weight. Allowable bending stress, Fb = 16.5 MPa, Allowable shearing stress, ?= 1.73 MPa, Modulus of Elasticity, E = 7310 MPa. 1. Which of the following most nearly gives the section of the beam so that allowable shear stress will not exceeded? a. 200 mm x 400 mm b. 220 mm x 440 mm c. 150 mm x 300 mm d. 250 mm x 500 mm 2. Which of the following most nearly gives the section of the beam so that allowable bending stress is not exceeded? a. 200 mm x 400 mm b. 220 mm x 440 mm c. 150 mm x 300 mm d. 250 mm x 500 mm 3. Which of the following most nearly gives the section of the beam so that the allowable deflection of 1/240 of the span will not be exceeded? a. 200 mm x 400 mm b. 220 mm x 440 mm c. 150 mm x 300 mm d. 250 mm x 500 mm
A 6-m simply supported timber beam is to be designed to carry a total uniformly load throughout its entire span of 25 kN/m including its own weight. Allowable bending stress, Fb = 16.5 MPa, Allowable shearing stress, ?= 1.73 MPa, Modulus of Elasticity, E = 7310 MPa. 1. Which of the following most nearly gives the section of the beam so that allowable shear stress will not exceeded? a. 200 mm x 400 mm b. 220 mm x 440 mm c. 150 mm x 300 mm d. 250 mm x 500 mm 2. Which of the following most nearly gives the section of the beam so that allowable bending stress is not exceeded? a. 200 mm x 400 mm b. 220 mm x 440 mm c. 150 mm x 300 mm d. 250 mm x 500 mm 3. Which of the following most nearly gives the section of the beam so that the allowable deflection of 1/240 of the span will not be exceeded? a. 200 mm x 400 mm b. 220 mm x 440 mm c. 150 mm x 300 mm d. 250 mm x 500 mm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 6-m simply supported timber beam is to be designed to carry a total uniformly load throughout its entire span of 25 kN/m including its own weight. Allowable bending stress, Fb = 16.5 MPa, Allowable shearing stress, ?= 1.73 MPa, Modulus of Elasticity, E = 7310 MPa.
1. Which of the following most nearly gives the section of the beam so that allowable shear stress will not exceeded?
a. 200 mm x 400 mm
b. 220 mm x 440 mm
c. 150 mm x 300 mm
d. 250 mm x 500 mm
2. Which of the following most nearly gives the section of the beam so that allowable bending stress is not exceeded?
a. 200 mm x 400 mm
b. 220 mm x 440 mm
c. 150 mm x 300 mm
d. 250 mm x 500 mm
3. Which of the following most nearly gives the section of the beam so that the allowable deflection of 1/240 of the span will not be exceeded?
a. 200 mm x 400 mm
b. 220 mm x 440 mm
c. 150 mm x 300 mm
d. 250 mm x 500 mm
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