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- Modeling Grade Beams in RisaFoundation | Eng-Tips
I am trying to design grade beams in Risa Foundation In the past, I have used Risa3D for this I modeled discrete compression only springs that had a stiffness equal to the soil subgrade modulus times the tributary area of that spring Check the reaction at the springs and make sure
- Member fuction lateral and gravity | Eng-Tips
Nov 1, 2023 SE2607 RISA 3D plate corner forces, internal force summation tool and internal plate moments relation Suraj Thapa Aug 29, 2023 RISA Technologies: RISA-3D Replies 2 Views 1K Sep 2, 2023 SE2607
- Wind Loads in RISA3D and RISA Foundation | Eng-Tips
Works okay in RISA and I just copy the one case over and change the load on the roof members The trouble I was having was linking the 3D model to RISA Foundation The load combos in Foundation are based on load categories The two basic load cases I mentioned in RISA would both be assigned the WL+X load category
- RISA-3D Plate Principal Stresses | Eng-Tips
Can someone explain how RISA-3D calculates Plate Principal Stresses? Specifically, how does it derive σx, σy, and τxy for use in the Mohr's Circle calculations that lead to σ1, σ2, τmax, and σVon-Mises? The methodology is described here The Plate Forces and Plate Principal Stresses for a 2 25"
- Risa 3D - Rigid Links | Eng-Tips
For a situation with grillage beam assembly with several beams sitting cross wise on a carrier beam I have used rigid links connected between the centroid of the shapes to model the behavior At the node that ties to the carrier beam I have released all moments as my initial attempt without
- RISA torsion Analysis. | Eng-Tips
The primary reference used in the development of RISA-3D's torsional calculations was Torsional Analysis of Steel Members, available from the AISC The equations used for torsional stresses won't all be repeated here, but they can be found in the reference RISA-3D models warping members using CASE 2, as shown in the Torsion reference
- RISA Floor RISA 3D - Integration (column loading) | Eng-Tips
I have been working on a small one story building, using RisaFloor for the gravity load analysis, and then transferring the model from floor to 3D to evaluate the lateral loads (wind seismic) Problems: -On most columns in the 3D model, the axial load experienced is not equal to that in
- Unbraced Lengths | Eng-Tips
I'm modeling a steel frame structure (pipe bridge) and this is both a question related to RISA as well as structural engineering Attached is a screenshot of my model In RISA there is four different unbraced lengths you can input for the member info, Lb yy, Lb zz, Lcomp top, and Lcomp bot I
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