Steel Pipe
The Steel pipe requires an input of:
- Cross-section name (default name is generated by the program, it can be changed using "User def." checkbox)
- Coefficient of pressure reduction below ditch bottom - this coefficient is used for the reduction of pressures below ditch bottom for calculation of braced sheeting - it can be either input or calculated automatically (for classical non-braced sheeting this coefficient is equal to 1.0)
- Section length l
- Spacing of profiles a
- Correction factor for concrete Kc (pipes filled with concrete)
- Cross-section type is selected in the dialog window "Catalog of profiles" (button "Catalog")
Parameters input - steel pipe
For the calculation of cross-sectional characteristics of steel pipes filled with concrete, the steel section is converted to concrete.
where: | Ic | - | moment of inertia of the concrete cross-section |
Ec | - | elasticity modulus of the concrete | |
Kc | - | correction factor for concrete | |
Is | - | moment of inertia of the steel cross-section | |
Es | - | elasticity modulus of steel | |
Ac | - | cross-sectional area of concrete | |
As | - | cross-sectional area of steel | |
a | - | pile spacing |
The verification of the bearing capacity of the steel resp. combined section can be carried out in the "Dimensioning" frame.