Moment–Curvature — RC Column
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Section Geometry
Shape
Circular
Rectangular
Bending axis
Horizontal (x)
Vertical (y)
Diameter (in)
Clear cover to hoop (in)
Width B (in)
Height H (in)
Clear cover (in)
Concrete
f'c (ksi)
Ec (ksi)
Unit weight (kcf)
Longitudinal Reinforcement
No. of bar bundles
Bars per bundle
1
2
3
Bar size (US)
#4
#5
#6
#7
#8
#9
#10
#11
#14
#18
Bar layout
Uniform
Unequal sides
Bar size (US)
#4
#5
#6
#7
#8
#9
#10
#11
#14
#18
Total bars
Bottom bars
Top bars
Side bars (each)
Bottom bar size
#4
#5
#6
#7
#8
#9
#10
#11
#14
#18
Top bar size
#4
#5
#6
#7
#8
#9
#10
#11
#14
#18
Side bar size
#4
#5
#6
#7
#8
#9
#10
#11
#14
#18
fy (ksi)
fu (ksi)
Es (ksi)
εsh
εsu
Confinement Reinforcing
Bar type
Hoop
Spiral
Bar size
#3
#4
#5
#6
#7
#8
Spacing (in)
Tie bar size
#3
#4
#5
#6
Spacing (in)
Vertical legs
Horizontal legs
fyh (ksi)
εsh - strain at peak stress
Analysis Options
Axial P (kips, +comp)
Fiber layers
εcu limit (0 = auto)
Confined concrete model inside hoops
Continue past failure strain
↻ Run Analysis
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Configure inputs and press Run Analysis
Moment–Curvature Analysis — RC Column
Results of Analysis
Section at φu
Moment–Curvature Diagram
φ =
Cross Section at Selected φ
Steel Stress-Strain Curve (AASHTO)
Concrete Stress-Strain Curve (Mander)
Concrete Stress-Strain (Mander)
Steel Stress-Strain (AASHTO)