This is a problem I've been dealing with as a long time RISA3D user, accustomed to calculating lateral forces separately and applying them to the model. RISAFloor will calculate seismic mass and base shear, allowing you to push this through to RISA3D for design. The trouble I'm having is with...
Does anyone have a good source for the self weight of a typical CFS Roof Truss, and have so far been unlucky. Alpine provides approximate values for wood trusses in the "Encyclopedia of Trusses", but I cannot find similar values for CFS. The only thing I have found is a sentence in the same...
I'm designing an interior 8" NLB CMU wall, and I'm not sure why my deflection in the RISA-3D model is so large.
As a cantilevered interior wall I've got:
8" CMU
48" c/c grout & reinforced
DL = 70 plf downward from a metal stud/gyp. board wall on top of the CMU wall
LL = 5 psf lateral interior...
Looking at adding equipment loads to a 40+ year old design made up of continuous reinforced concrete girders atop rc columns. The girders I'm looking at now are at an 84' radius cl, spanning 22' c/c across the columns. Girder is 12" wide and 24" deep. Hope this will help anyone picture the...
