# (Civil eng.) The stress placed on the fixed end of a symmetrical steel I-beam, shown in…

(Civil eng.) The stress placed on the fixed end of a symmetrical steel I-beam, shown in Figure 1.19, can be determined by this formula:

S is the stress.

L is weight, in lbs, of the load placed on the beam.

is the beam’s rectangular moment of inertia in units of in4.

is the distance, in inches, the load is placed from the fixed end of the beam (technically referred to as the “moment arm”).

is one half the height, in inches, of a symmetrical beam.

a. Determine the units of stress, S, by calculating the units resulting from the right side of the formula.

b. For a steel beam having a rectangular moment of inertia of 21.4 in4 and a height of 6 inches, determine the stress for a load of 700 lbs placed 8 feet from the fixed end.

c. If you were required to write a computer program to determine the stress placed on a symmetrical beam, what inputs, outputs, and algorithm would you use?

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