Circular RC Column — P-M Interaction Diagram

AASHTO LRFD 10th Edition · Strain Compatibility · Nominal & Factored

Units:

Section Geometry

Diameter D (in)

Cover to hoop (in)

Materials

f'c (ksi)

fy (ksi)

Ec (ksi)

Es (ksi)

Resistance Factors

Tension (\u03d5t)

Compression (\u03d5c)

Reinforcement

No. of bar bundles

Bars per bundle

Long. bar size

Hoop bar size

Load Cases

Case	Pu (kip)	Mu (k·ft)	ϕMn (k·ft)	Mu/ϕMn

Compression positive.

Section Properties

Control Points

Member Cross-Section

Green filled = factored (ϕP_n, ϕM_n) | Dashed blue = nominal (P_n, M_n) | ◆ = control points | ● = demand cases