Thank you for the heads up, Modestas!
What if it is an existing RC structure where I only need to analysize if it is still able to carry a particular load?
Here's the staad editor data:
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 04-Apr-14
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 6 0 0; 3 0 0 5; 4 6 0 5; 5 0 5 0; 6 6 5 0; 7 0 5 5; 8 6 5 5;
MEMBER INCIDENCES
1 5 1; 2 7 3; 3 6 2; 4 8 4; 5 5 6; 7 7 8; 10 5 7; 11 6 8;
ELEMENT INCIDENCES SHELL
9 5 6 8 7;
ELEMENT PROPERTY
9 THICKNESS 0.3
DEFINE MATERIAL START
ISOTROPIC CONCRETE
E 2.17185e+007
POISSON 0.17
DENSITY 23.5616
ALPHA 1e-005
DAMP 0.05
TYPE CONCRETE
STRENGTH FCU 27579
ISOTROPIC STEEL
E 2.05e+008
POISSON 0.3
DENSITY 76.8195
ALPHA 1.2e-005
DAMP 0.03
TYPE STEEL
STRENGTH FY 253200 FU 407800 RY 1.5 RT 1.2
END DEFINE MATERIAL
UNIT METER KG
MEMBER PROPERTY
1 TO 5 7 10 11 PRIS YD 0.5 ZD 0.5
UNIT METER KN
CONSTANTS
MATERIAL CONCRETE ALL
UNIT METER KG
SUPPORTS
1 TO 4 PINNED
UNIT METER KN
LOAD 1 LOADTYPE Dead TITLE SELFWEIGHT
SELFWEIGHT Y -1
LOAD 2 LOADTYPE Live TITLE OPERATION LOAD
UNIT METER KG
ELEMENT LOAD
9 PR GY -375 -1.5 0
9 PR GY -375 1.5 0
LOAD COMB 3 COMBINATION LOAD CASE 3
1 1.0 2 1.0
PERFORM ANALYSIS PRINT ALL
FINISH
Thank you in advance.
Stratguy