For foundation design, do you check "Use Reduced Stiffness for Steel Members" when running RAM Frame module? It seems to give different Max Unfactored Soil Bearing for foundation design

Looking at ASCE 7 AISC 360 Direct Analysis Method guide, It states to get the period T with unreduced stiffness from Loads and Applied Forces report but mine does not show T. Can you help me obtain this T?

According to application notes by AISC, for Direct Analysis Method the UNREDUCED STIFFNESS shall be used for service checks. Now, due to limitations by Staad for DAM (for instance, not TENSION MEMBER available), I proceed to: 1. Reduce module of elasticity…

Hello, How can we specify 0.8EA (axial stiffness reduction) in RAM elements? I only see the input option for 0.8EI (Ig factor).

My question has two parts . 1. When using the command PERFORM DIRECT ANALYSIS is the stiffness of the structural member reduced or does REDUCEEI 1 need to be explicitly mentioned? 2. How can I perform the staad analysis for serviceability design following…

My understanding is that with the PDITER command with every PDelta Iteration the Taub values for Direct analysis is computed and the iteration stops when Taub converges. In which case I cannot understand the purpose of the ITERDIRECT command. Could…

Hi I am using Direct analysis method in staad for one of the structure. I am getting below analysis notes in the output file. "** NOTE: MOMENT BALANCE DOES NOT CONSIDER SECONDARY EFFECTS OF P-Delta or Direct Analysis **" I compared the member end…

Hi, As per AISC 360-10 section C2.2b.(4) for Direct Analysis Method, both maximum 2 nd -order & 1 st -order drift shall be determined with stiffnesses adjusted as specified in Section C2.3. It seems that the command “PERFORM DIRECT ANALYSIS” is only…