The reinforced concrete beam section from the example in the lecture is shown below The section has tension and compression steel reinforcement When the neutral axis depth is at infinity, i e , c , the section is in uniform compression, i e , all points on the section have 0 0 0 3 compressive strain Draw the strain profile for this neutral axis depth Determine the unbalanced section axial force T ( C c C s ) for this neutral axis depth When the neutral axis depth is at zero, i e , c 0 , the section is in uniform tension Effec tively, all points on the section have 0 0 0 3 tensile strain Draw the strain profile for this neutral axis depth Determine the unbalanced section axial force T ( C c C s ) for this neutral axis depth When the neutral axis depth is at half the section depth, i e , c h 2 1 0 inch Draw the strain profile for this neutral axis depth Determine the unbalanced section axial force T ( C c C s ) for this neutral axis depth

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Question: The reinforced concrete beam section from the example in the lecture is shown below. The section has tension and compression steel reinforcement. When the neutral

The reinforced concrete beam section from the example in the lecture is shown below. The

section has tension and compression steel reinforcement.

When the neutral axis depth is at infinity, i

.

., c =,

the section is in uniform compression,

.

.,

all points on the section have

0.003

compressive strain.

Draw the strain profile for this neutral axis depth.

Determine the unbalanced section axial force

T - (C_{c} + C_{s})

for this neutral axis depth.

When the neutral axis depth is at zero, i

.

., c = 0,

the section is in uniform tension. Effec

-

tively, all points on the section have

0.003

tensile strain.

Draw the strain profile for this neutral axis depth.

Determine the unbalanced section axial force

T - (C_{c} + C_{s})

for this neutral axis depth.

When the neutral axis depth is at half the section depth, i

.

., c = \frac{h}{2} = 10

inch.

Draw the strain profile for this neutral axis depth.

Determine the unbalanced section axial force

T - (C_{c} + C_{s})

for this neutral axis depth.

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