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  1. dgkhan

    vertical reaction

    Need to find out what will be vertical reaction on this truss, manuallyhttp://files.engineering.com/getfile.aspx?folder=0b0003e5-9ce7-4933-825e-eff56d11f5a6&file=Full_page_photo.pdf
  2. dgkhan

    cmu wall design

    Anybody has a spreadsheet to design a cmu wall? Also if we use cmu wall for three Storey house, anybody has sample how wind loads are applied?
  3. dgkhan

    Strength of concrete for Parking structure suspended slab

    Anyone know the strenght of concrete required as per CANADA CSA S413 deisgn of parking structures.
  4. dgkhan

    how to model steel stud wall in etabs

    yes and part of lateral load system
  5. dgkhan

    how to model steel stud wall in etabs

    how to model steel stud wall in etabs. Any quick tip on providing stiffness modifiers. Had any body
  6. dgkhan

    Column with perforation

    The legs of storage racks are usually made of perforated steel columns. Shall I use minimum cross sectional area and section modulus when calculating it's capacity?
  7. dgkhan

    150 feet span roof

    Thanks hokie66. As I said in my posts before that I need some exact book name / reference which no body could give. So I will contact the technical support of Bentley and CSI etc and also try to contact my decade old teachers at Princeton, NJ if they are still there. To all of you who have spend...
  8. dgkhan

    150 feet span roof

    thanks zoparrat. It is the same concept other pointed out before with tension ring in center and radial trusses. Personally I think space truss will be more elegant. I only need to know how to design it. Do you have some reference available just like you posted for cycle wheel roof.
  9. dgkhan

    design based on canadian steel code

    Please see attached file. If you design based on Canadian steel code S16-01, the beam (story 6) shows red color but if you see detail, it's formula answer is much less.
  10. dgkhan

    150 feet span roof

    JAE. this roof has a downward slope so good candidate for ponding in my opinion. so I will avoid this approach. And do not worry, the design of this roof will be ok.If I do not feel comfortable, I will hire someone.
  11. dgkhan

    150 feet span roof

    Just for records, I did search on Google at first place and did not find anyhting explaining enough how to design a space frame or anything more which I already knew. I know that it is a multi span system and I can model it in sap, etab or staad and see for results. But I just wanted to know...
  12. dgkhan

    150 feet span roof

    so far cost is not an issue. When we finish design than client might scream , than , we will go BACK to Dik's proposal. Right now I want imagineer rather than just engineer. BTW based on your input I will hire services of one of you. Dik, I think you are from canada.Is that right. which city...
  13. dgkhan

    150 feet span roof

    Dik, You are proposing a basic system. Anybody can design that. I wanted two way system to cut down the 96" deep truss which you proposed. I wanted 5 feet maximum depth of trusses. That's why I floated my question to get an idea. Any ideas of designing this roof to cut down depth is appreciated...
  14. dgkhan

    150 feet span roof

    what is a space frame
  15. dgkhan

    150 feet span roof

    I have to design a circular roof 150 feet diameter. Shall I use two way steel truss. by the way what is space frame, is it two way truss? (the roof is flat so nothing parabolic)
  16. dgkhan

    TORSIONAL B VALUES

    I found out. It does. Go to File>PRINT TABLES>SUMMARY REPORT.... It will print Torsion B values
  17. dgkhan

    TORSIONAL B VALUES

    AS PER CANADIAN CODE WE NEED TO FIND TORSIONAL SENSITIVITY. WHICH IS RATIO OF MAXIMUM STORY DRIFT TO AVERAGE DRIFT. DOES ETAB GIVE THIS VALUES IN OUT PUT AUTOMATICALLY?
  18. dgkhan

    Cw

    section wizard does give Cw Value also.It lists it as Iw = Sectorial moment of inertia
  19. dgkhan

    Cw

    I am not familiar with mathcad. Does any body has in Excel or any formula for hat channels.
  20. dgkhan

    Cw

    Torsional warping constant.For certain hat channel section, I can draw in section wizard and can obtain all values except Cw. How to manually calculate it.

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