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…
What checks does the programme perform on the tie-rods?
The programme provides the factor of safety as the ratio between the resistance of the tendon (minimum of the three failure mechanisms: yielding of the reinforcement, bulb-soil displacement, reinforcement-mortar displacement) and its reaction, calculated according to the type chosen: active tendon, passive tendon.A minimum length of the free section must also be defined, so that…
What is the difference between the reinforcement element and the MRE module in Slope?
The reinforcing element, usually a geotextile, is inserted into the soil to provide increased resistance to sliding along a probable failure surface. It is used to model slopes or reinforced embankments. In Slope, the reinforcement element can be inserted punctually on the geotechnical section thanks to the specific command on the command bar (from Tests-loads-works…
I have defined intervention works, but I do not get an increase in the safety factor between the pre- and post-work situation. How come?
Check that the calculation method chosen is not Fellenius, it is the only one that does not take into account the intervention works.
The programme does not perform the calculation.
Check that the section has been defined on the first quadrant of the co-ordinates (avoid negative co-ordinates) or that it does not have a large number of co-ordinate digits, if this is not the case translate the section.
The programme does not take into account the presence of the water table, yet it has been included
Check that the layers, from ‘Stratigraphy’, have been defined as ‘Permeable’.
I cannot understand how to define gabions in Slope.
Two approaches can be used to define slope gabions, the first is to define them as deformable walls and assign an average shear strength in terms of tension.The other is to use the polygon tool and then treat the polygon as a material, in which case it is suggested to use apparent geotechnical parameters:Apparent cohesion=(0.03M(gab)-0.05)98.1…
I cannot open files with the extension *.sta, from the previous version of Slope
Within Slope 2022 there is a converter for files with the *.sta extension from previous versions. Simply click on the menu icon in the top right-hand corner and then on ‘Convert Files’. The conversion tool will open: