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hello guys, the foundations and first floor columns (installed with 10 pieces of 16mm diameter rebar)for a four story building were already concreted. We decided to revise the fourth floor where it accommodates additional load. The contractor revised the structural plan, eventually it needs a...

Thanks KootK, can you suggest FEM softwares that i may use for computing lateral load?

Why is that in solving lateral loads by using structural software and using say portal method, their computed moments are different? Is it because of the presence of diaphragm in using software?

Thank you KootK

In analyzing for center of rigidity will i include the column as a lateral resisting element with the shear walls?

thanks, follow up question am i going to solve separately the combination 1.2D+1.0L using say moment distribution and 1.0E using either portal or cantilever method then add up the axial, shear and moments?

After getting the earthquake force(E)of a building by solving the base shear using UBC 1997 seismic code, is the earthquake forces (E) be the value to be used in the load combination 1.2D + 1.0L + 1.0E. I want to learn how to manually analyze frame having vertical loads and lateral loads before...

Is there a way to solve rotation of members of a truss? Any reference book recomended

Thank you guys

Does that mean that the architect will be the one to design the location of the elevator shaft?

Where is the best location for concrete elevator shaft to place so as not to compromise the building's resistance against torsional moments due to eccentricities, say a building plan with a width of 10m(2@5m) and length of 16m(4@4m)