• How to model stepped column in RAM SS?

    I am trying to model a single larger precast column that basically gets split in order to support a steel truss on one side and a precast column with a moment frame on the other. How would you recommend we model this condition? My best idea would be…
  • How can I support the truss by two cable and bottom support?

    Hello all, I have been trying to model a truss. I have two bottom support, it can be fully fixed or partially fixed and I have two cable connection at the top. But this cable member should not take any compression, since I have Wind suction in that…
  • Unusual behaviour of truss members

    We experience this problem when we assign "Truss member" to cross bracing. The structural behaviour is normal without "Truss member" specs assigned. ********************************************** *************STAAD EDITOR************** STAAD SPACE…
  • Modelling Existing Building - Excessive Horizontal Node Displacement where Column meets Truss

    Hello, I am modelling an existing building, which has a number of columns which connect to the bottom of trusses at approximately midspan. These Columns are at the building face where the wind will act on them. In all load cases where I have generated…
  • Error in Design - Simple Steel Flat Truss

    Hello All, I have modeled a simple steel truss to check my hand calculations. When viewing the global status of the model, the diagonal members are shown to have "Errors in Design." The members all have ratios from 1.84 to 3.6. However, my…
  • How to hide 'beams' for printing?

    How can I hide members for printing different views? For example, I have a truss bridge model and I want to print schematic views to be used for field inspection, and I want a view of the top chords only (highlighted in red in the attached photos), but…
  • Crashing of staad while using beta angle

    Staad crashes while assigning beta angle. Beta angles gets deleted after reopening the staad file.
  • Error in applying moving load to a truss model

    I have designed a truss model as a planar frame and assigned truss specification to all the members. When i apply the moving load and run the analysis the moving load is not applied on the structure and shows the following warnings **WARNING-NO MEMBERS…
  • Parameters Check for Truss

    Dear Altruists, I am trying to design an Arched truss roof for an indoor stadium. Please observe my assigned specifications, parameters and other necessary aspects to give me proper suggestions to design it correctly. Also, I will be delighted if…
  • Barras armadas comprimidas Grupo IV y V

    Hola; Necesito saber si es posible generar barras según las define el reglamento CIRSOC 301, como Itipo Grupo IV y Grupo V en RAM, como se ven en la imagen del link. https://www.google.com.ar/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&ved=2ahUKEwjp8…
  • Staad pro member specification

    What is the difference between specifying a Member as "Truss" and Releasing Partial Moment at both Ends ? Thank You .
  • Design of Truss/Purlin in Staadpro

    I am facing a problem while designing a roof truss. While designing the roof truss as a whole , the purlins are failing in output results on analysis But passing when checked by selecting the beam individually. Also when the purlin is designed…
  • Warning and Notes in Design

    I am designing a truss structure and its showing Some Notes and Warnings in results output like: Notes- 1) Very weak Spring Added for stability Warnings- 1) Instability at joint 2) Zero stiffness in direction 3 at joint . Kindly check the…
  • Truss model correction

    Can someone look at my model as tell if i have designed the truss model correctly. Truss Pipe no column.std
  • Truss

    Does the area of steel always remains less for a truss model than I beam to support a structure.
  • Truss modelling issues.

    Hi, I am practicing Staad pro and having issues with truss modelling. i don't know if my method is right for analysis and design of truss model. could someone tell me what is a general procedure for designing a circular steel frame shade of 35m supported…
  • Can someone please correct stiffness issues in this space truss model?

    Code is as follows - STAAD SPACE START JOB INFORMATION ENGINEER DATE 28-Aug-18 END JOB INFORMATION INPUT WIDTH 79 UNIT FEET POUND JOINT COORDINATES 1 -3.375 0 0; 2 -2.958 0 0; 3 -1.125 0 0; 4 -0.875 -1.574 0; 5 -0.29167 -1.574 0; 6 0 0 0; 7 1.667…
  • Zero Stiffness - Wood Truss Model

    Hello, I am new to modeling trusses and I'm attempting to model a wood queen post truss and have just started with the self weight of the truss but I get 13 warnings when I run the model which say: *WARNING- ZERO STIFFNESS IN DIRECTION 2 AT JOINT 3…
  • Is this Truss structure been analysed correctly, please comment on the member release and support fixity and bracing.

    Please find the truss shed file attached for the consideration as per the requirements and to remove instabilities and excessive deflection I have put redundant bracing and supports made fixed and some members chnaged from truss member to beam. …
  • RE: Warning message-"The member is not a Truss member"

    The design as per IS:802 is carried out for axial load only and so when designing the members, the software is expecting only axial forces to be present in the members, which is what happens when these are specified as TRUSS members. If you have not declared…
  • RE: RAM Modeler

    You'll find some tips here: RAMSS Truss Modeling And Design Note, for complex shaped trusses, RAM Structural System won't work. We recommend STAAD.pro or Ram Elements for those cases.
  • RE: Truss member of STAAD and the instability problems

    Fiona: There are a couple of nodes at the intersection of the long braces which should be merged. From what you described, it would be more appropriate to release the moments at the ends of the long braces rather than specifying these as TRUSSes. The…
  • RE: Modeling Bowstring Trusses

    Modeling trusses in RAM SS is fairly limited. If you have a story for the top and a story for the bottom and model the verticals as columns you can get close. Here are some other tips and warnings: RAMSS Truss Modeling And Design
  • Vertical and roof Truss design

    Hi, I really need help. I am trying to design an open warehouse made of steel truss roof and column. I keep on getting joint instability on one of my support. I don't know if what I did was right in my modelling process. Should I separate the design…
  • RE: Why compression force in tension members and why tension force in compression members developed?

    Here is how the generated member forces can be explained. If you look at the axial forces in the inclined braces, these are developing significant axial tension ( specially I am referring to the extreme 3 on each side ). The amount of axial tension…