PS-RC Mobile 1.33

Use Agreement

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Reinforcement

ASTM Bar Dimensions US

Size
Diameter
Area
Weight
in
in2
lb/ft
#3
0.375
0.11
0.376
#4
0.500
0.20
0.668
#5
0.625
0.31
1.043
#6
0.750
0.44
1.502
#7
0.875
0.60
2.044
#8
1.000
0.79
2.670
#9
1.128
1.00
3.4000
#10
1.127
1.27
4.303
#11
1.410
1.56
5.313
#14
1.693
2.25
7.65
#18
2.257
4.00
13.60

ACI Standard Hooks

Std 90 Hook Std 180 Hook

Size D (in) 180 hooks 90 hooks
A or G J A or G
#3 2-1/4" 5" 3" 6"
#4 3" 6" 4" 8"
#5 3-3/4" 7" 5" 10"
#6 4-1/2" 8" 6" 1'-0"
#7 5-1/4" 10" 7" 1'-2"
#8 6" 11" 8" 1'-4"
#9 9-1/2" 1'-3" 11-3/4" 1'-7"
#10 10-3/4" 1'-5" 1'-1-1/4" 1'-10"
#11 12" 1'-7" 1'-2-3/4" 2'-0"
#14 18-1/4" 2'-3" 1'-9-3/4" 2'-7"
#18 24" 3'-0" 2'-4-1/2" 3'-5"

ACI Standard Stirrups And Ties

Stirrup 90 Hook Stirrup 135 Hook

Stirrup and Ties

Size D (in) 90 hooks 135 hooks
A or G H A or G
#3 1-1/2" 4" 4" 2-1/2"
#4 2" 4-1/2" 4-1/2" 3"
#5 2-1/2" 6" 5-1/2" 3-3/4"
#6 4-1/2" 1'-0" 8" 4-1/2"
#7 5-1/4" 1'-2" 9" 5-1/4"
#8 6" 1'-4" 10-1/2" 6"

Seismic Stirrup and Ties

Size D (in) 135 Seismic Hook
A or G H
#3 1-1/2" 4-1/4" 3"
#4 2" 4-1/2" 3"
#5 2-1/2" 5-1/2" 3-3/4"
#6 4-1/2" 8" 4-1/2"
#7 5-1/4" 9" 5-1/4"
#8 6" 10-1/2" 6"

LRFD Tension Development Length



Results

Straight Bars Table

Hooked Bars Table

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Prestress Steel

Grade 270

Strand Properties

Property
Units
0.5in
0.6in
Diameter
in
0.5
0.6
Area
in2
0.153
0.217
Weight
lbs/ft
0.53
0.74
fpu
ksi
270
270
fpu A
kips
41.3
58.6
0.75 fpu A
kips
31.0
43.9
E
ksi
28,500
28,500

Tendon Properties

Strand Diameter:

Results

0.0

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Beam Design

RC Beam

RC Beam

Results

Submitted input was not valid

PS Tee Beam

PS T Beam

** Optional Input

Results

Submitted input was not valid

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Information

Notes

General

References:
  • ACI 318-08
  • LRFD 6th Edition
For interactive features make sure to press the submit button to update results. Changing input parameters does not refresh the output.

LRFD Tension Development Length

For hooked bars the following modification factors do not apply:
  • Top bars
  • Epoxy coated bars

Input definitions:

Spacing and cover requirements
  • Straight bars-lateral c-c spacing≥6in, cover≥3.0in
  • Hooks-#11 or smaller, side cover≥2.5in, cover beyond bar extension≥2.0in
  • Epoxy bars-clr cover<3db or clr spacing<6db
Confinement
  • Straight bars-spirals, bar diameter 0.25, spaced≤4in
  • Hooks-#11 or smaller, ties or stirrups spaced ≤3db

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