ONLY PROBLEM $(4-95).4-93.$ A standard square structural steel tube has nominal cross$-$sectional

dimensions of $44\frac{1}{4}in.$ and is $8\mathrm{.}00$ ft long. Compute the torque

required to twist the tube $3\mathrm{.}00.$

$4-94.$ For the tube in Problem $4-93,$ compute the maximum stress in the

tube when it is twisted $3\mathrm{.}00.$ Would this be safe if the tube is made

from ASTM A$501$ structural steel and the load was static?

$4-95.$ Repeat Problem $4-93$ for a rectangular tube $64\frac{1}{4}$