Archives: FAQs

I noticed that the internal stress values are different when comparing the stress diagrams with those available on the structural analysis results window. Why?

Those shown on the structural results window refer to the individual pole, the stresses depicted on the diagrams refer to linear metres of work

I have a pole with a mixed section: tubular reinforcement confined by concrete, I would like to know whether the concrete is taken into account in the calculation?

Yes, the concrete liner is taken into account in the calculation

Does the programme calculate the limit load, as required by the regulations?

Yes, the programme calculates the limit load, you must tick the option in the general data and indicate the reductive coefficient for the verticals under investigation.

Does the programme allow the verification of equilibrium of a rigid body around a point, as required by the standard?

It is possible to carry out this type of verification using the LEM method. It makes sense to consider this type of verification in the case of a free bulkhead or one constrained by a tie-rod order. Depending on the type of structure, tensioned or free, the programme chooses the point at which to refer…

Does the software allow you to calculate the crowning kerb?

If the kerb is sufficiently rigid, it serves to ensure that the piles function as a single block, and as such, since the piles behave in the same way, assuming flat deformations, there are no stresses on the kerb itself (it is permissible to consider the kerb out of the calculation and assign, as the…

Does the software allow metal sheet piles (e.g. Larsenn-type piles) to be checked?

For this type of work, the programme performs the geotechnical verifications, provides the stresses but does not perform the structural verifications. The section must be defined with the type Input A,E,I from ARCHIVES/SECTION ARCHIVES.

In the presence of struts/tirants, how are the design stresses of the contrast beam between two consecutive pins/tirants determined?

A possible dimensioning moment can be the product of the maximum reaction of the point/tirant by the half-distance in the horizontal plane of two consecutive points/tirants (possibly amplified with a coeff. of e.g. 1.5).A possible dimensioning cutoff for each of the two calculation directions can be given by the maximum reaction of the possibly amplified…

Does the free length of the tie rod affect the calculation?

Yes, the free length contributes to characterising the stiffness of the tie rod.

Are the default combinations sufficient to perform a bulkhead calculation?

The default combinations are the minimum static combinations required by the standard, the seismic combination must be added: go to the calculation window, right-click on the construction phase and choose ‘New Seismic’, assign the seismic coefficients to this combination only.The combinations, the two default ones and the seismic combination, are the minimum ones required by…

Why does SPW change the length of the bulkhead? I would need to check a known penetration depth

It is possible to perform a verification calculation on a known penetration depth.For this purpose, the FEM analysis method must be selected and the general FEM data set as specified below:Automatic calculation of the penetration depth: No;Initial penetration depth: coincides with the penetration depth to be verified;Increase of the penetration depth: zero. Select the Apply…