The rigid beam shown is fixed to the top of the three posts made of steel and aluminum. The posts each have a length of 250 mm when no load is applied to the beam, and the temper Determine the force (in KN) supported by the steel post if the bar is subjected to a uniform distributed load of 150 kN/m and the temperature is raised to 55°C. Assume vertical upward positive. Material Aluminum Steel Length (mm) 250 250 Diameter (mm) 60 40 Modulus of Elasticity (GPa) 73.1 200 300 mm 300 mm a (/°C) 12x10-6 23x10-6

Structural Analysis
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ISBN:9781337630931
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Chapter2: Loads On Structures
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For problem solving, round intermediate answers to hundred thousandths (five decimal places) and final answers to the nearest thousandths (three decimal places) and DO NOT forget to affix their corresponding units

The rigid beam shown is fixed to the top of the three posts made of steel and aluminum. The posts each have a length of 250 mm when no load is applied to the beam, and the temperature is 20°C.
Determine the force (in KN) supported by the steel post if the bar is subjected to a uniform distributed load of 150 kN/m and the temperature is raised to 55°C. Assume vertical upward force is
positive.
Material
Aluminum
Steel
Length (mm)
250
250
steel
Diameter (mm)
60
40
300 mm
Modulus of Elasticity (GPa)
73.1
200
150 kN/m
aluminum
300 mm
steel
a (/°C)
12x10-6
23x10-6
250 mm
Transcribed Image Text:The rigid beam shown is fixed to the top of the three posts made of steel and aluminum. The posts each have a length of 250 mm when no load is applied to the beam, and the temperature is 20°C. Determine the force (in KN) supported by the steel post if the bar is subjected to a uniform distributed load of 150 kN/m and the temperature is raised to 55°C. Assume vertical upward force is positive. Material Aluminum Steel Length (mm) 250 250 steel Diameter (mm) 60 40 300 mm Modulus of Elasticity (GPa) 73.1 200 150 kN/m aluminum 300 mm steel a (/°C) 12x10-6 23x10-6 250 mm
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