Interaction Diagram For Columns New

Tables and Diagrams 1.8 1.6 1.4 t = 0.08 0.07 0.06 Kn = Pn / fc Ag 1.0 1.8 1.6 Kmax 0.05  0.04 1.2 2.0 h

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Tables and Diagrams

1.8 1.6 1.4

t = 0.08 0.07 0.06

Kn = Pn / fc Ag

1.0

1.8 1.6

Kmax

0.05



0.04 1.2

2.0

h γh

INTERACTION DIAGRAM L4-60.7 fC = 4 ksi fy = 60 ksi γ = 0.7

Pn

0.02

0.25

0.01 0.8

0.50

0.6

0.07

Kmax

0.06 0.05



1.0

0.02

0.25

0.01 0.8

0.50

0.2

t = 0.0050

0.0 0.00

0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 Rn = Pn e / fc Ag h Figure A-15 

0.75

0.4

1.0

t = 0.0035

Pn

fs/fy = 0

0.03

0.6

0.75

0.4 0.2

1.2

h γh

INTERACTION DIAGRAM R4-60.7 fC = 4 ksi fy = 60 ksi γ = 0.7

t = 0.08

0.04

fs/fy = 0

0.03

1.4 Kn = Pn / fc Ag

2.0

281

1.0 t = 0.0035 t = 0.0050 0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

Rn = Pn e / fc Ag h Figure A-17 

Source: Diagrams A-15 through A-22 are from the ACI Design Handbook SP-17(97) and are reprinted here with the permission of the American Concrete Institute.

1.8 1.6 1.4

t = 0.08 0.07 0.06

Kn = Pn / fc Ag

1.0

0.03 0.02 0.01

0.8

Kmax

1.6 

Pn

0.25

1.0 t = 0.0035 t = 0.0050

0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 Rn = Pn e / fc Ag h Figure A-16 

0.07

Kmax

0.06



0.05

1.2 1.0

Pn

fs/fy = 0

0.03 0.25

0.02 0.01

0.50

0.8 0.6

0.75

0.4

1.4

h γh

INTERACTION DIAGRAM R4-60.8 fC = 4 ksi fy = 60 ksi γ = 0.8

t = 0.08

0.04

fs/fy = 0

0.50

0.6

0.2

1.8

0.05 0.04

1.2

2.0

h γh

INTERACTION DIAGRAM L4-60.8 fC = 4 ksi fy = 60 ksi γ = 0.8

Kn = Pn / fc Ag

2.0

0.75

0.4 0.2 0.0 0.00

1.0 t = 0.0035 t = 0.0050 0.05

Figure A-18 

0.10

0.15 0.20 0.25 0.30 Rn = Pn e / fc Ag h

0.35

0.40

0.45

Appendix A

2.0 t = 0.08

1.8

0.07

1.6

0.05

Kn = Pn / fc Ag

0.03



Pn

1.4

0.25

0.02

1.0

1.6 fs/fy = 0

0.04 1.2

1.8

Kmax

0.06

1.4

2.0

h γh

INTERACTION DIAGRAM R4-60.9 fC = 4 ksi fy = 60 ksi γ = 0.9

Kn = Pn / fc Ag

282

0.01

0.50

0.8

0.75

0.6

1.2 1.0

h γh

INTERACTION DIAGRAM C4-60.8 fC = 4 ksi fy = 60 ksi γ = 0.8

t = 0.08 0.07 0.06

Kmax

0.05



fs/fy = 0

0.04 0.03

Pn

0.25

0.02 0.01

0.50

0.8 0.75

0.6 1.0

0.2

t = 0.0035

0.2

t = 0.0050

0.0 0.00

0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 Rn = Pn e / fc Ag h Figure A-19 

1.6 1.4 1.2 1.0

t = 0.08 0.07

INTERACTION DIAGRAM C4-60.7 fC = 4 ksi fy = 60 ksi γ = 0.7

0.06

1.8 1.6

Kmax

0.05



Pn

1.4

fs/fy = 0

0.04 0.03 0.02

0.25

0.01 0.50

0.8 0.6

1.0 t = 0.0035

Figure A-20 

0.05

0.10 0.15 0.20 Rn = Pn e / fc Ag h

1.2 1.0

0.15 0.20 0.25 Rn = Pn e / fc Ag h

0.30

0.35

0.25

t = 0.08

INTERACTION DIAGRAM C4-60.9 fC = 4 ksi fy = 60 ksi γ = 0.9

h γh

0.07 0.06

Kmax

0.05



fs/fy = 0

0.04 0.03

0.30

Pn

0.25

0.02 0.01

0.50

0.8 0.75 1.0

0.4 0.2

t = 0.0050

0.0 0.00

0.10

0.6

0.75

0.4 0.2

0.05

2.0

h γh

Kn = Pn / fc Ag

1.8

t = 0.0035 t = 0.0050

Figure A-21 

2.0

Kn = Pn / fc Ag

1.0

0.4

0.4

0.0 0.00

t = 0.0035 t = 0.0050 0.05

Figure A-22 

0.10

0.15 0.20 0.25 Rn = Pn e / fc Ag h

0.30

0.35

0.40