A hollow cast-iron pole has an outside diameter of 450mm and an inside diameter of 350mm. It is subjected to a compressive force of 1000kN (weight included) throughout its length of 1.0m. The pole is braced to prevent bending and buckling. E = 100 GPa. 1. If the allowable stress for the pole is 15MPa, is the pole safe if a 1000kN compressive force is applied to it? (Prove your answer) 2. If the allowable contraction for the pole is 0.15mm, is the pole safe or not?
A hollow cast-iron pole has an outside diameter of 450mm and an inside diameter of 350mm. It is subjected to a compressive force of 1000kN (weight included) throughout its length of 1.0m. The pole is braced to prevent bending and buckling. E = 100 GPa. 1. If the allowable stress for the pole is 15MPa, is the pole safe if a 1000kN compressive force is applied to it? (Prove your answer) 2. If the allowable contraction for the pole is 0.15mm, is the pole safe or not?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A hollow cast-iron pole has an outside diameter of 450mm
and an inside diameter of 350mm. It is subjected to a
compressive force of 1000kN (weight included) throughout
its length of 1.0m. The pole is braced to prevent bending and
buckling. E = 100 GPa.
1. If the allowable stress for the pole is 15MPa, is the
pole safe if a 1000kN compressive force is applied
to it? (Prove your answer)
2. If the allowable contraction for the pole is 0.15mm,
is the pole safe or not?
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