Anchor: #i1019911

Section 6: Reinforcing Steel

Anchor: #i1019916

Table of Standard Reinforcing Steel Bars

On quantity tables, show the length to the nearest inch and the weight to the nearest pound.

Anchor: #i1012869Table 1-7: Standard Reinforcing Steel Specifications

English Designations

Nom Bar Dia

(Inches)

Weight

(Lbs per LF)

Area

(Sq Inches)

#3

0.375

3/8

0.376

0.110

#4

0.500

1/2

0.668

0.196

#5

0.625

5/8

1.043

0.307

#6

0.750

3/4

1.502

0.442

#7

0.875

7/8

2.044

0.601

#8

1.000

1

2.670

0.785

#9

1.128

1 1/8

3.400

1.000

#10

1.270

1 1/4

4.303

1.266

#11

1.410

1 3/8

5.313

1.563

#14

1.693

1 3/4

7.650

2.250

#18

2.257

2 1/4

13.600

4.000

1 1/4" Dia Smooth

1.250

1 1/4

4.172

1.227


Anchor: #i1019925

Bar Labels

For bar labels, use upper case letters according to the designations listed in Table 1-8 where possible. Letters not designated may be used as necessary.

Lowercase prefix letters may be used to identify bars in sub-components such as wings. Examples are wH, wV, wU, and wS or wP bars in wingwalls. Prefix letters should be used only where there is a definite improvement in clarity from flagging the steel in sub-components separately from other reinforcing steel.

See individual chapters for detail examples of the normal bar designations.

Anchor: #i1012951Table 1-8: Preferred Bar Labels

Label

Description

A

Main bars top and bottom or

Main bars top

B

Main bars bottom

(Slabs on stringers or caps)

C

 

D

Distribution bars or dowels

E

Cap pedestal bars

F

Footings

G

 

H

Horizontal bars

I

(do not use)

J

Shape

K

 

L

Shape

M

 

N

 

O

(do not use)

P

 

Q

(not preferred)

R

 

S

Stirrups

T

Temperature steel

U

Shape

V

Vertical bars

W

 

X

Slab dowels

Y

 

Z

Spiral bars


Anchor: #i1019944

English Development Length and Splices

Class B splice – 50 percent or less of the bars spliced at one location* (except conventional slab reinforcing) * Epoxy coated splice lengths by designing engineer (round up to even inch)

Anchor: #i1013036Table 1-9: Class B Splices

Size

A

Ld

B

1.3 Ld

C

1.3 (1.4) Ld

D

1.3 (1.4) 0.8 Ld

E

1.3 (0.8) Ld

Grade 40 fy=40,000 psi f 'c=3,600 psi (Class C Concrete)

#3

(6.00") 1' – 0"

1' – 0"

1' – 0"

1' – 0"

1' – 0"

#4

(8.00") 1' – 0"

1' – 0"

1' – 3"

1' – 0"

1' – 0"

#5

(10.00") 1' – 0"

1' – 1"

1' – 7"

1' – 3"

1' – 0"

#6

(12.00") 1' – 0"

1' – 4"

1' – 10"

1' – 6"

1' – 1"

#7

(16.03") 1' – 5"

1' – 9"

2' – 6"

2' – 0"

1' – 5"

#8

(20.93") 1' – 9"

2' – 4"

3' – 3"

2' – 7"

1' – 10"

#9

(26.67") 2' – 3"

2' –11"

4' – 1"

3' – 3"

2' – 4"

#10

(33.76") 2' – 10"

3' – 8"

5' – 2"

4' – 2"

3' – 0"

#11

(41.68") 3' – 6"

4' – 7"

6' – 4"

5' – 1"

3' – 8"

#14

(56.67") 4' – 9"

 

 

 

 

#18

(73.33") 6' – 2"

 

 

 

 

Grade 60 fy=60,000 psi f 'c=3,600 psi (Class C Concrete)

#3

(9.00") 1' – 0"

1' – 0"

1' – 5"

1' – 2"

1' – 0"

#4

(12.00") 1' – 0"

1' – 4"

1' – 10"

1' – 6"

1' – 1"

#5

(15.00") 1' – 3"

1' – 8"

2' – 4"

1' – 10"

1' – 4"

#6

(18.00") 1' – 6"

2' – 0"

2' – 9"

2' – 3"

1' – 7"

#7

(24.04") 2' – 1"

2' – 8"

3' – 8"

2' –11"

2' – 1"

#8

(31.40") 2' – 8"

3' – 5"

4' – 10"

3' – 10"

2' – 9"

#9

(40.00") 3' – 4"

4' – 4"

6' – 1"

4' – 11"

3' – 6"

#10

(50.64") 4' – 3"

5' – 6"

7' – 9"

6' – 2"

4' – 5"

#11

(62.52") 5' – 3"

6' – 10"

9' – 6"

7' – 8"

5' – 6"

#14

(85.00") 7' – 1"

 

 

 

 

#18

(110.00") 9' – 2"

 

 

 

 


Class B splice – 50 percent or less of the bars spliced at one location* (except conventional slab reinforcing) * Epoxy coated splice lengths by designing engineer (round up to even inch)

Anchor: #i1013215Table 1-10: Class B Information

Description

Code

Ld ~ basic development length

A