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Assuming that all other specificationsremain unchanged, determine the allowable load P if an overallfactor of safety of 3.0 is desired.43 1.55, a pin of10-mm diameter is to be used at A. P1.55Front view12 mmSide view1.56 In an alternative design for the structure of Prob. Knowing that the ultimate shearingstress is 100 MPa at all connections and that the ultimate normal stressis 250 MPa in each of the two links joining B and D, determine theallowable load P if an overall factor of safety of 3.0 is desired.8 mm200 mmTop view180 mmC12 mmABCABCB20 mmP8 mm8 mmDDFig. 1.53, assuming that the structure has been redesigned to use12-mm-diameter pins at B and D and no other change has been made.1.55 In the structure shown, an 8-mm-diameter pin is used at A, and 12-mmdiameterpins are used at B and D. Notethat link BD is not reinforced around the pin holes.Front viewDD18 mm6 mmAPB160 mm 120 mmCBSide viewAFig. Knowing that a factor of safety of 3.0 isdesired, determine the largest load P that can be applied at A. The ultimate shearingstress is 150 MPa at all connections, and the ultimate normal stressis 400 MPa in link BD. 1.53 In the steel structure shown, a 6-mm-diameter pin is used at C and10-mm-diameter pins are used at B and D.
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