• Response Spectrum

    Dear All, I have questions about Response Spectrum Analysis since I'm new to this dynamic load. Q1. I want to analyze an existing building using Response Spectrum Analysis. The running process takes hours to analyze it. Could it be any mistake in…
  • STAAD Response Spectrum Questions

    Hi, I am curious about a couple of things on the way STAAD handles response spectrum analysis, and below are my questions. I would be very glad if you can provide me some answers . I'm using build 20.07.05.15, by the way. Due to the client…
  • Response Spectrum Analysis STAAD Pro - URGENT

    My question is regarding carrying out a response spectrum analysis in STAAD Pro. This is what I have done so far. I have set up the model in kN and METERS units. I have allowed for the joint weights in the form of udl loads on the beams in all three…
  • Stability Coefficient (Theta) for Response Spectrum Analysis

    I recently received the following question from one of my colleagues: "In section 12.9.6 on page 132 of ASCE 7-05, it is mentioned that P-Delta Effects should be considered according to Section 12.8.7. But, the absolute (signless)…
  • Dynamic Analysis

    I am doing dynamic analysis for the first time and I hope someone can give me answers to the following questions 1. In Time History Definitions, Where can i find the parameters for Arrival Time and Damping dialog box. I only input it in STAAD editor…
  • RAM SS Dynamic modal analysis

    I am having problems running dynamic load cases on a large model. RAM Frame will successfully solve the static wind & seismic load cases including 100/30 orthogonal load effects, but when dynamic load cases are added it gets most of the way through the…
  • ANY IDEA ON HOW TO DEAL WITH THIS PROBLEM WHO APPEARED IN MY STAAD OUTPUT VIEWER?!WHAT IS "S4" ANYWAY?!

    *** STAAD.Pro ERROR *** A PROBLEM HAS BEEN ENCOUNTERED WHILE SOLVING FOR MODES (S4) *** ERRORS IN SOLVER ***
  • Response spectrum analysis

    dear sir, ********************************************************************************** DEFINE 1893 LOAD ZONE 0.1 RF 3 I 1 SS 2 ST 1 DM 0.05 **DL 1.0 SELFWEIGHT MEMBER WEIGHT 1 TO 20 46 TO 65 91 TO 110 136 TO 155 181 TO…
  • UNDERGROUND STRUCTURE ANALYSIS

    I am performing a dynamic analysis (Response Spectrum) for a Structure with 2 basement levels. I have some queries regarding the use of STAAD commands to model the soil - structure interaction. Results of static and dynamic analysis are…
  • Re: Multiple Direction Time History Analysis in Staad.Pro V8i

    I am also having the same problem. When i apply three time varying load on a single node in a single direction with time laps between them, then staad pro only gives results for the last time varying load applied to the node. so plz if someone is aware…
  • Re: Member Load & Physical Member Load

    Hi, I am currently designing a 3D Steel Roof truss with response spectrum and other usual load types. I have few queries: 1) When we use response spectrum loading, why are we required to assign loads in all the three direction while response spectrum…
  • Results of Response Spectrum

    I am doing a case study comparing the fundamental period of a 20-story reinforced concrete building with dual system in both directions and compared the results from SAP 2000 and Midas Gen. The reference building is from the book of SK Ghosh Seismic Design…
  • Seismic Loads Produced STAAD.Pro with Response Spectrum

    When seismic loads produced STAAD.Pro with response spectrum, the vertical seismic produced by overturning moment from horizontal seismic force at support reaction are always one direction, and only get positive value. Obviously, in a space frame, not…
  • RAM SS response spectrum S.F. & frame shear force difference.

    Hi, I have two questions. 1) RAM SS has response spectra input window and I need to input X and Y Scale factor(default =1.0). Should I input I(importance f)/R there as starting point? or I/R is already reflected? In other words, 1.0 is ok to…