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Section 3
3-15
any of the radial axes. The values printed for the TRACK 1.0
output are:
P0 = Maximum purely axial load carrying capacity of the
column (zero moment).
Pnmax = Maximum allowable axial load on the column
(Section 10.3.5 of ACI 318).
P-bal = Axial load capacity at balanced strain condition.
M-bal = Uniaxial moment capacity at balanced strain condition.
e-bal = M-bal / P-bal = Eccentricity at balanced strain
condition.
M0 = Moment capacity at zero axial load.
P-tens = Maximum permissible tensile load on the column.
Des. Pn = Pu/PHI where PHI is the Strength Reduction Factor
and Pu is the axial load for the critical load case.
Des. Mn = Mu*MMAG/PHI where PHI is the Strength Reduction
Factor and Mu is the bending moment for the
appropriate axis for the critical load case. For circular
columns,
uuy
MMM
=+
22
uz
e/h = (Mn/Pn)/h where h is the length of the column.
Example for column design per the ACI 318-2002 code
UNIT KIP INCH
START CONCRETE DESIGN
CODE ACI 2002
or
CODE ACI
FYMAIN 58 ALL
MAXMAIN 10 ALL
CLB 2.5 ALL