A rectangular beam has b = 350 mm and d = 430 mm with concrete compressive strength f’c = 30 MPa and steel yield strength fy = 345 Mpa. If compression steel area is required, it will be placed 70 mm from its cg up to extreme fiber. Calculate the following: a) Required steel area if the beam is subjected to dead load moment of 30 kN-m and live load moment of 25 kN-m b) If the beam has 5-16 mm diameter rebars, determine if it is compression-controlled, transition or tension-controlled. c) Required tension steel area at factored moment of 400 kN-m.
A rectangular beam has b = 350 mm and d = 430 mm with concrete compressive strength f’c = 30 MPa and steel yield strength fy = 345 Mpa. If compression steel area is required, it will be placed 70 mm from its cg up to extreme fiber. Calculate the following: a) Required steel area if the beam is subjected to dead load moment of 30 kN-m and live load moment of 25 kN-m b) If the beam has 5-16 mm diameter rebars, determine if it is compression-controlled, transition or tension-controlled. c) Required tension steel area at factored moment of 400 kN-m.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A rectangular beam has b = 350 mm and d = 430 mm with concrete compressive strength f’c = 30 MPa and steel yield strength fy = 345 Mpa. If compression steel area is required, it will be placed 70 mm from its cg up to extreme fiber. Calculate the following:
a) Required steel area if the beam is subjected to dead load moment of 30 kN-m and live load moment of 25 kN-m
b) If the beam has 5-16 mm diameter rebars, determine if it is compression-controlled, transition or tension-controlled.
c) Required tension steel area at factored moment of 400 kN-m.
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