EXAMPLE 1 : ------------------------------------------------------------

Example 1: COLUMN w/ Unconfined Concrete
P-M Interaction Diagram  -  Based on Design Steel stress-strain


SYSTEM:
T=1 P=1 C=2  TOL=0.0001         : T=1 for P-M Diagram
:                                 P=1 to check stress-strain
:                                 C=2 all concrete is confined at rebar 
:                                 
:
SECTION:
1  S=1  HI=24   HJ=24   N1=12   N2=12   X=0   Y=0 :  24"x24" Column
:                                                    12x12 mesh
:
STEEL:
1    X=   2.5  Y=   2.5  A=0.79   T= 1 :  Long. Steel Type
3    X=  21.5  Y=   2.5  G= 1, 3       :  8 #8 Bars
5    X=  21.5  Y=  21.5  G= 3, 5       :  2 in. clear cover to bars
7    X=   2.5  Y=  21.5  G= 5, 7       :  with #4 hoops
8    X=   2.5  Y=  12.0                :
:
PROPERTY:
FC=4*0.85  E1=0.003  E2=0.004  FR=0.4 : Rupture strength = 10% f'c
                                      : Blank line for confined concrete
FY=60  E=29000                        : Design Steel 
:
:
:
DATA:
EC=0.003  A=0  N=20           : Moment about global X-axis for Ultimate
EC=0.003  A=0  N=20  PHI=0.70 : compressive strain of 0.003, with and
:                               without capacity reduction factors
:
END
