Hand writing not allowed SA 1.8 m high square concrete column with b = 220 mm (Ec = 25 GPa and9.9 × 10-6/°C) is reinforced with six 30 mm steel bars (E = 200 GPa11.7 × 10-6/°C). The tensile strength of the concrete is 2 MPa.Cracks will begin to form in the concrete when the axial stress in the concretereaches this level.acand as=O s=Determine the change in temperature AT necessary to cause cracks to developin the concrete of this column. Report your answer in C with one decimal placeof accuracy. Indicate an increase in temperature as positive and a decrease asnegative.AT: =What is the axial stress in the reinforcing steel when these cracks develop?Report your answer in units of MPa with two decimal places of accuracy. Tensionis positive and compression is negative.=1.8 mCheckMPa

Answered: Image /qna-images/answer/0dd30fe4-e6f3-4a1b-b7b0-f3c2a2dc942d.jpg

A 1.8 m high square concrete column with b = 220 mm (Ec ac = 9.9 × 10-6/° C) is reinforced with six 30 mm steel bars (E, 25 GPa and = 200 GPa and as 11.7 x 10-6/°C). The tensile strength of the concrete is 2 MPa. Cracks will begin to form in the concrete when the axial stress in the concrete reaches this level. ΔΤ X Determine the change in temperature AT necessary to cause cracks to develop O in the concrete of this column. Report your answer in C with one decimal place of accuracy. Indicate an increase in temperature as positive and a decrease as negative. = O s = = What is the axial stress in the reinforcing steel when these cracks develop? Report your answer in units of MPa with two decimal places of accuracy. Tension is positive and compression is negative. 1.8 m Check = MPa

A 1.8 m high square concrete column with b = 220 mm (Ec ac = 9.9 × 10-6/° C) is reinforced with six 30 mm steel bars (E, 25 GPa and = 200 GPa and as 11.7 x 10-6/°C). The tensile strength of the concrete is 2 MPa. Cracks will begin to form in the concrete when the axial stress in the concrete reaches this level. ΔΤ X Determine the change in temperature AT necessary to cause cracks to develop O in the concrete of this column. Report your answer in C with one decimal place of accuracy. Indicate an increase in temperature as positive and a decrease as negative. = O s = = What is the axial stress in the reinforcing steel when these cracks develop? Report your answer in units of MPa with two decimal places of accuracy. Tension is positive and compression is negative. 1.8 m Check = MPa

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter12: Composite Materials

Section: Chapter Questions

Problem 12.7P: Estimate the transverse tensile strength of the concrete in Problem 12.6.

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