TR.20.3 Tapered Member Specification
The following commands are used to specify section properties for tapered I-shapes.
General Format
argument-list = f1 f2 f3 f4 f5 (f6 f7)
Where:
| Parameter | Description |
|---|---|
| f1 | Depth of section at start node. Must be greater than f3. |
| f2 | Thickness of web. |
| f3 | Depth of section at end node. |
| f4 | Width of top flange. |
| f5 | Thickness of top flange. |
| f6 | Width of bottom flange. Defaults to f4 if left out. |
| f7 | Thickness of bottom flange. Defaults to f5 left out |
Example
MEMBER PROPERTY 1 TO 5 TAPERED 15.98 0.285 11.98 6.745 .455 6.745 .455
See C:\Users\Public\Public Documents\STAAD.Pro CONNECT Edition\Samples\ US\Doubly_Symm-I_tapered.std for an additional example of designing a member with a tapered I section.
Notes
- All dimensions (f1, f2, … f7) should be in current units.
- f1 (Depth of section at start node) should always be greater than f3 (Depth of section at end node). You must provide the member incidences accordingly.
- Shear deformation is not considered for tapered I-Beams and tapered poles. This means that the SET SHEAR command has no effect on the deformation computed for members with these cross sections.