Maximum stresses on a pole subjected to combined loadings

Date of Exam

Situation
The solid pole shown in the figure is loaded with a vertical load P = 25 kN and lateral load H = 0.95 kN. The pole is 3 m high, 300 mm diameter and weighs 22 kN/m3.
 

2012-may-design-pole-under-combined-loadings.png

 

1.   What is the maximum compressive stress at the base in MPa?

A.   3.22 C.   2.89
B.   1.65 D.   2.44

2.   What is the maximum tensile stress at the base in MPa?

A.   1.60 C.   1.12
B.   2.23 D.   0.89

3.   What is the maximum shearing stress in the pole in MPa?

A.   0.0234 C.   0.0112
B.   0.0179 D.   0.0151

 

Answer Key

 

Solution