What is the reason for designing of column without considering the worst load case even though I add several load combinations?
In my model I analyze and design a G+8 RCC Structure, and the column is designed for only the first load case even though other load combinations give maximum axial force and moments. I attached the screenshots of output file below.
Simulation of Buckling of Bridge Braces — the San Francisco-Oakland Bay Bridge
Simulation of Buckling of Bridge Braces - T he San Francisco-Oakland Bay Bridge
The California Department of Transportation (Caltrans) initiated the California Toll Bridge Seismic Retrofit Program to determine the vulnerability of California's major…
Dam Safety in an Earthquake
Dam Safety in an Earthquake
An earthquake can cause a dam to crack or dislocate, or even cause its component blocks to detach. The damage can result in uncontrolled water release or a catastrophic flood. Numerical methods such as finite element analysis…
RAM Frame and NBCC 2015 4.1.8.11 4)
Hi,
Based on NBCC 2015 4.1.8.11 4) single storey buildings with steel or wood deck as diaphragms can have a higher fundamental period compared to 4.1.8.11 3) as seen in the snap below. However, in the current RAM frame the Ta is only based on clause…
RAM Frame - Joint Shape Warning for Braced Frame
I'm getting some conflicting graphical information and output. I'm designing a special concentrically braced frame (SCBF) with wide flange beams and columns and HSS braces. The frame column webs are oriented in the plane of the frame and all beam and…
Staad.PRO Seismic Response Spectrum (CQC)
Hi. I am working on a steel structure and i have some issues with the seismic loads.
That are the flexure MZ diagrams for the pure seismic load case in X direction (longitudinal).
It caught my attention the results for the beam element marked in…
CHECK SOFT STOREY USING EUROCODE
Hi, how to check soft storey using Eurocode in Staad.Pro (Response Spectrum)
Apply of LRFD Load Combination - ASCE/SEI 7-05
Seismic load combinations are:
1.2D + 1.0E + L + 0.2S
0.9D + 1.0E + 1.6H
While calculating the E loading, shall we do it for 1.0D + 1.0L OR based on the factors indicated in the mentioned combinations:
1.2D + 1.0L
0.9D
**It is known that no…
Static seismic loading as per Eurocode
Currently, STAAD.Pro only has options for generating Response spectra loads as per Eurocode. Users have requested to implement Eurocode for Static seismic cases as well.
Seismic with transportation loads
I have a large warehouse type building that has a heavy bridge crane in it. The bridge itself runs along two stationary rails at each end of the bridge. The crane moves along the length of the bridge.
I add the load as a transportation load to account…
Seismic Load Generator
I am using the seismic load generator for the first time. Can you please verify that I have applied it correctly? This is a viaduct with a long through-truss span. CRT ped LL straight PRATT TRUSS w MBTA ELEV.std
Staad Pro does not include Seismic load NBCC 2015
Dear All,
I highly recommend to include calculation of seismic load using NBCC 2015. I see it as a big gap in Staad Pro not to include Seismic loading using NBCC 2015
Thanks a lot
Vertical component of seismic load - NBCC
Dear All,
I am trying to consider vertical component of seismic load using National building code of Canada NBCC. I assume 70% of acceleration is vertical direction (see below), but I am getting errors. I would appreciate if you tell me where is the…
RAM Frame - Moderately Ductile Beam Requirements
I am looking at the requirements of the beam at the second story of the chevron BRBF. Why is RAM Frame checking Beam ductility using the Diagonal Brace requirements of AISC 341-16? The output clearly says it does not check the axial demand in the beam…
Analysis of shear wall pedestrian bridge system
Good day,
I would like to kindly query a few observations I have gathered from a shear wall model I am currently undertaking. The structure being modelled is an rectilinear shear wall system which comprises 4 walls, similar to an elevator core in…
How to apply sequence of loading for elevated water tank resting on sloping ground by using Response spectrum analysis?
Hello.sir i m comparative study of elevated water tank resting on sloping ground & take slope varies from 0 to upto 30degree..I have dout in staad model.. actually I already model but my result not getting correct..means as per our study base shear will…
Seismic Provisions Joint Code Check Output Clarification
Hi,
I wanted to clarify the output for the seismic provisions joint code check in regards to continuity plate. I am unclear of what the 0.66" under "Tf Prov (in)" is indicating. Do I need a 0.66" thick continuity plate? Also, how is RAM arriving at…
Seismic load problem in staad
When (-)FY is inserted, it works without any problem. By the way, in the case of (+) FY load, is the FY value of DL reaction force and seismic load different?
performace based seismic design
sir i want to konw can i do performance based seismic design in staad pro. and pushover analysis.
SIG Tech Talk: Seismic Analysis in STAAD.Pro CONNECT Edition based on EC8 Code
Tech Talk: Seismic Analysis in STAAD.Pro CONNECT Edition based on EC8 Code - Response Spectrum Method Presenter: Badreddine Ziane, Senior Technical Manager, Bentley Systems Date/Time: 15 th October, 11:30 AM GST (GMT + 4)
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Do you want…
SIG Tech Talk: Eigen Solution and Response Spectrum Method in STAAD.Pro CONNECT Edition
Tech Talk: Eigen Solution and Response Spectrum Method in STAAD.Pro CONNECT Edition Presenter: Kaushal Aggarwal , Technical Support Engineer, Bentley Systems Date/Time: 2 nd September , 11:30 AM GST (GMT + 4)
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SIG Tech Talk: Modelling for Seismic Analysis in STAAD.Pro CONNECT Edition
Tech Talk: Modelling for Seismic Analysis in STAAD.Pro CONNECT Edition Presenter: Surojit Ghosh, Senior Structural Engineer, Bentley Systems Date/Time: 19 th August, 11:30 AM GST (GMT + 4)
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Do you want to know about seismic analysis and…
Does STAAD consider 1% Seismic force for SDC A structure?
for Seismic design category A structure, 10% of story dead load is required to consider (refer 11.7.2 of ASCE7-05). Does STAAD apply 1% of story dead load as Seismic load or it will calculate as per prescribed procedure based on chapter 12~15 of ASCE7…
Technical Support via Phone?
Hi!
I'm a plan reviewer with the city of San Jose. I'm reviewing a new hockey arena and I have some questions about how RAM processes automated ELF procedures and seismic drifts for structures that have collector columns. It's a BRB building, but thin…
Very Low Base Shear and Sign to be used for Loads
Dear All,
I hope you are all doing well. I am in the middle of a crucial assignment for which I am doing Response Spectrum analysis using custom spectrum.
Base Shear and load sign.txt Seismic Spectrum.xlsx
Client has provided the Ct and x values…