Question

Internal force, stresses, allowable stress P 400 kN C L 3.75 m P2 720 kN B 2 L 3.75 m 0.6 A 0.5 E0.4 0.3 If the geometry, o, and safety factor are given, what steps would you take to 0.2 0.1 determine whether the members are "safe"? C 0.05 0.1 0.15 0.2 0.25 Strain

Answer 1

1. If the geometry is given we have to observe the loading conditions.

2. We have to find the stresses.

3. We have to find the maximum stress.

4. Since the
oy
and factor of safety are given, we have to find the allowable stress by the formula
oy
/factor of safety.

5. Now we have to compare the maximum stress with the allowable stress.

6. If maximum stress is less than or equal to the allowable stress, then the design is safe.