Diameters of small commercially available steel rods vary by sixteenths of an inch. select the required commercial size of the rod required to support a tensile load of 35,000 lb if the tensile stress cannot exceed 20,000 psi.

in dia rod

Explanation:

Given;

Maximum tensile stress = 20,000 psi

Applied tensile load = 35,000 lb

Now,

the area of the steel rod required =

or

the area of the steel rod required =

or

the area of the steel rod required = 1.75 in²

Also, Area of rod =

where, d is the diameter of the rod

1.75 in² =

or

d = 1.49 in

So we can use in dia rod

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