Hi! I am having some issues. I assigned a "plate mat" support to a foundation, and i activated the "compression only" option. I made sure that i am defining the combinations with de "repeat load" command. And i am still getting tension in some…

I was modeling a monumental stair and was playing with different support assumptions for some of the landing framing, which leads me to ask a clarifying question. I started out with pinned ends as I normally would and got a typical simple span moment…

is change & perform analysis required when using tension/ comression springs in STAAD

Hi All, I would need help in the design of a RC raft in RAM concept. The raft sits directly on the soil, that I modelled in RAM with m anually input point springs (usually one spring every meter, in both directions). I need to carry out an iterative…

Dear all, i have some doubts regarding allocation of compression springs in the Staad model. My model essentially consists of an invert floor with vertical sidewalls and i need to provide compression springs both at invert-soil and sidewall-soil interface…

Dear all, Currently i am modelling tunnel lining for a project in Staad Pro. This requires the application of compression springs both on sides as well as invert. i have doubts regarding direction of radial and tangential stiffness to be applied in the…

Large mat foundations are usually modeled using plate elements and the boundary conditions at soil – foundation/structure interface is idealized using winkler springs assigned with sub-grade modulus of soil (using plate mat with compression only springs…

I am modelling a pile founded structure using multilinear springs to mimic the soil. Under some loading conditions, the STAAD analysis does not converge and a warning is issued in the output file.The exact warning is "MULTILINEAR ITERATION DIVERGING.…