A cast iron column with an outer diameter of 250 mm and an inner diameter of 200 mm is 4 m long. For cast iron assume o = 500 MN /m² and a = 1/ 1600. Assuming it is rigidly fixed at each end. Calculate: The safe load assuming o load factor of 4 by Rankine formula shown below: acA Per = 1+a() where: P: is the critical load (N) de: critical stress, (Pa) A: cross sectional area (m²) 1 a: Rankine constant = 1600 L: effective length (m)
A cast iron column with an outer diameter of 250 mm and an inner diameter of 200 mm is 4 m long. For cast iron assume o = 500 MN /m² and a = 1/ 1600. Assuming it is rigidly fixed at each end. Calculate: The safe load assuming o load factor of 4 by Rankine formula shown below: acA Per = 1+a() where: P: is the critical load (N) de: critical stress, (Pa) A: cross sectional area (m²) 1 a: Rankine constant = 1600 L: effective length (m)
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Transcribed Image Text:(b) A cast iron column with an outer diameter of 250 mm and an inner diameter
of 200 mm is 4 m long. For cast iron assume = 500 MN /m² and a = 1/
1600. Assuming it is rigidly fixed at each end.
Calculate:
The safe load assuming o load factor of 4 by Rankine formula shown
below:
açA
Per =
where:
P: is the critical load (N)
de: critical stress, (Pa)
A: cross sectional area (m²)
1
a: Rankine constant =
1600
L: effective length (m)
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