A subcontractor must join two wooden planks to lengthen a tension member (see Figure 5). It does this using four bolts and two steel plates (E = 140 GPa, a = 13.5 x 10$/ C) VS). If the wood has a limit stress equal to 30 MPa and the steel plate has a limit stress of 30 MPa and a thickness of 12mm, you are asked to calculate: a) The maximum load P that the assembly can support? b) Which bolt diameter to choose if the bolt shear strength is 70 MPa? c) The total elongation of each steel plate if thețe is a temperature increase of 400 Cin more than the load P?
A subcontractor must join two wooden planks to lengthen a tension member (see Figure 5). It does this using four bolts and two steel plates (E = 140 GPa, a = 13.5 x 10$/ C) VS). If the wood has a limit stress equal to 30 MPa and the steel plate has a limit stress of 30 MPa and a thickness of 12mm, you are asked to calculate: a) The maximum load P that the assembly can support? b) Which bolt diameter to choose if the bolt shear strength is 70 MPa? c) The total elongation of each steel plate if thețe is a temperature increase of 400 Cin more than the load P?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A subcontractor must join two wooden planks to lengthen a tension member (see Figure
5). It does this using four bolts and two steel plates (E = 140 GPa, a = 13.5 x 105/ C)
VS). If the wood
has a limit stress equal to 30 MPa and the steel plate has a limit stress of 30 MPa and a
thickness of 12mm, you are asked to calculate:
a) The maximum load P that the assembly can support?
b) Which bolt diameter to choose if the bolt shear strength is 70 MPa?
c) The total elongation of each steel plate if thețe is a temperature increase of 400
Cin more than the load P?
Splice plates
15 cm 15 cm-
20 сm
P.
P =
15 cm
Figure 5
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