Substructure Help

Column Design

Pu

Factored axial load

Mux

Factored moment about global X-direction

Muz

Factored moment about global Z-direction

pMn

Resisting moment, having ϕ factored considered

c

Neutral axis location

Incl

Inclined angle of neutral axis

pPn/Pu

Ratio between the resisting axial capacity and factored force, set to one in Substructure

pMn/Mu

Ratio between the resisting moment capacity and factored moment

k

Effective length factor for compression members

Cm

Factor relating the actual moment diagram to an equivalent uniform moment diagram

Beta

Absolute value of ratio of maximum dead load moment to maximum total load moment

Delta B

Moment magnification factor for members braced against sidesway

Delta S

Moment magnification factor for members not braced against sidesway

pPc

Critical Euler load

Cap Design

Quantity

Number of steel bars used in design

Bar dist

Distance between center of steel bar to edge of cap

As total

Total steel area

From

Starting location of steel bar

To

Ending location of steel bar

Loc

Location of design section from start of current member

AbsLoc

Location of design section from left end of cap

H

Height of cap

Mmax

Maximum moment at design section

Mmin

Minimum moment at design section

Mn

Resisting moment, which has φ factor considered

Comb

Combination number

Asb-req

Required bottom steel area

Asb-prv

Provided bottom steel area

Asb-eff

Effective bottom steel area, after considering development length

Ast-req

Required top steel area

Ast-prv

Provided top steel area

Ast-eff

Effective top steel area, after considering development length

Vu

Factored shear force

Tu

Factored torsion

Phi*Vc

Shear capacity of concrete section, which has φ factor considered

Phi*Tcr

Torsion capacity of concrete section, which has φ factor considered

Av/s

Required stirrup area per unit length

Alx Alt

Additional longitudinal steel due to shear and torsion (in addition to the provided steel)

Smax

Maximum stirrup spacing

fs-t

Cracking/fatigue stress at top

fs-b

Cracking/fatigue stress at bottom

Ratio fs-t

Ratio between cracking/fatigue stress at top and allowable stress

Ratio fs-b

Ratio between cracking/fatigue stress at bottom and allowable stress

*

Warning flag if code requirement is not satisfied