Question 7

D

The minimum flexural reinforcement

requirement in Sec. 9.6.1 of ACI 318 code is

to [Select]

Co

in a

ste

bel

Us

✓ [Select]

prevent flexural cracks

ensure ductility with

sufficient warning before

failure

make sure cracks form

before beam reaches its

cracking moment

prevent the use of large

architectural beams

1. For a tension controlled case,

[Select]

1 pts

(

4 pts

ution

e 60

nd

d-c

€

wing./nin a beam section reinforced with Grade 60

steel, from the similar triangles above and

below the neutral axis, we have 0.003

Use this expression to answer the following.

1. For a tension controlled case,

[Select]

✓ [Select]

2.

[Select]

U

0.003

O

d-c

Strain Diagram

P/nin a beam section reinforced with Grade 60

steel, from the similar triangles above and

below the neutral axis, we have 0.003

Use this expression to answer the following.

1. For a tension controlled case,

[Select]

2.

[Select]

✓ [Select]

0.6

0.375

0.003

0.429

(

(

d-c

Strain Diagram

P/nin a beam section reinforced with Grade 60

steel, from the similar triangles above and

below the neutral axis, we have 0.003

Use this expression to answer the following.

1. For a tension controlled case,

[Select]

[Select]

2. For a compression controlled case,

[Select]

✓ [Select]

M

IV

C

d-c

Strain Diagram

€₂

D