Steel Wire Rope for Lifting Analysis

STAAD SPACE

This is a SPACE frame analysis problem. Every STAAD input has to start with the command STAAD. The SPACE specification is used to denote a SPACE frame UNIT FEET KIP JOINT COORDINATES 1 0.0 0.0 72.0 2 0.0 0.0 60.0

2 3 0.0 0.0 48.0 4 0.0 0.0 36.0 5 0.0 0.0 24.0 6 0.0 0.0 12.0 7 0.0 0.0 0.0 REPEAT ALL 3 8.0 REPEAT 3 8.0 0.0 REPEAT 4 8.0 0.0 REPEAT 3 8.0 0.0 REPEAT 3 8.0 0.0 200 64. 128. 36.

0.0 0.0 0.0 0.0 0.0 0.0

The JOINT COORDINATE specification is used to specify the X, Y and Z coordinates of the JOINTs. The REPEAT command is used to generate coordinates of joints 8 to 119 based on the pattern of joints 1 to 7. MEMBER INCIDENCES 101 1 200; 102 7 200; 103 119 200; 104 113 200;

The MEMBER INCIDENCE specification is used for specifying MEMBER connectivities. ELEMENT INCIDENCES 1 1 8 9 2 TO 6 REPEAT 15 6 7

Element connectivities of elements 1 to 6 are defined first, based on which, the connectivities of elements 7 to 96 are generated UNIT INCH KIP MEMBER PROPERTIES 101 TO 104 PRIS YD 5.0

The line define member properties as PRIS (prismatic) followed by YD (depth) and ZD (width) values. The program will calculate the properties necessary to do the analysis. Additional information is available in sections 1 and 5 of the Technical Reference Manual MEMBER RELEASE 101 TO 104 END MP 0.50

The MEMBER RELEASE command is used to release 50% of moment at the start joint of member nos. 101 to 104 ELEMENT PROPERTIES 1 TO 96 TH 24.0

3 Elements 1 to 96 have a thickness of 24.0 inch UNIT INCH KIP CONSTANTS E STEEL POISSON STEEL DENSITY STEEL

The CONSTANT command initiates input for material constants like E (modulus of elasticity), POISSON, etc. UNIT INCH KIP SUPPORTS 200 fixed 1 7 113 119 FIXED BUT FY MX MY MZ KFX 0.05 KFZ 0.05

UNIT INCH KIP LOAD 1 'WEIGHT' SELFWEIGHT Y -1

Load case 1 is the selfweight of the structure acting in the global Y direction with a factor of -1.0. Since global Y is vertically upward, the factor of -1.0 indicates that this load will act downwards.

LOAD 2 JOINT LOADS 1 2 FY -21. 8 9 FY -10. 5 FY -30. 6 FY -61. 22 23 FY -41. 29 30 FY -20. 26 FY -54. 27 FY -108. 43 44 50 51 71 47 54 82 FY 48 55 76 83 FY 92 93 FY 99 100 FY 103 FY 104 FY 113 114 FY

72 78 79 FY -30. -26. -52. -20. -41. -48. -97. -10.

Load case 2 consists of several joint loads acting in the negative global Y direction LOADING COMBINATION 101 TOTAL LOAD 1 1. 2 1.

4 A load combination case, identified with load case number 101, is specified above. It instructs STAAD to factor loads 1 and 2 by a value of 1.0 and then algebraically add the results.

PERFORM ANALYSIS PRINT STATIC CHECK

A static equilibrium report, consisting of total applied loading and total support reactions from each primary load case is requested along with the instructions to carry out a linear static analysis PRINT SUPPORT REACTION

Reactions at the supports are obtained using the above command PRINT MEMBER FORCES LIST 101 TO 104

The above PRINT command is self-explanatory FINISH

This command terminates the STAAD run.