Answer to Question #293477 in Civil and Environmental Engineering for Alan Enrico V Tuib

Question

A solid brass bar 5.0 m long with rectangular cross-section, whose dimensions are 115 mm

by 188 mm is loaded in tension with a pull of 196.77 Mg. After which, it is loaded in

compression with a push of 168.59 Mg. If the load P used to bend the steel bar is the average

of the tensile and compressive load and there is bending and shear in the cross-section,

Calculate the following:

a. Compressive Strength

b. Maximum bending strength (Hint: assume length of the steel is the distance between

supporting ends)

Answer 1

a. Compressive Strength

F = P/A

F= 196.77Mg/(115mm*188mm)

F= 196.7Mg/21620mm²

F= 0.0091psi

b. Maximum bending strength 

=My/I

=21620mm²/5

=4324psa