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Hasan Tariq

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Everything posted by Hasan Tariq

  1. Hasan Tariq
    Dear sir i am working in strengthening project by using buckling restrained brace of low to mid rise building .As we know that in order to avoid gloabal buckling the yield strength of the core should be less than buckling load of the core PCr/Py> 1.5 But if i used ordinary brace without any restraint and use the same strategy the member will yield before reaching buckling load .will that work .
  2. Hasan Tariq
    Dear all , Can any one tell me the difference between Spectral Acceleration / g Spectral Acceleration / PGA Are they mean same in the response spectrum . can any one explain e
  3. Hasan Tariq
    Dear sir thank you so much .i was about to as you about this code
  4. Hasan Tariq
    Dear all , I am designing 40 storey tall building in which i have to consider wind effects along with seismic forces .I have to follow ASCE7-05 for wind design .I which they asked to enter gust response factor .I referred to that equation in the code it consider the one paramter which is the natural frequency of the sturcture .How can i enter that value .What value do i have to used . Kindly help
  5. Hasan Tariq
    Thanks alot sir The reason for modelling the pipe as a shell section is that inside pipe there are steel sections .if i model the pipe as a frame section the inside steel angle sections are unable to find any connectivity .so when i run the analysis the billboard deflects in one direction and inside angle section move in the other or remains there.
  6. Hasan Tariq
    I am designing the bill board of the height of 40 m using steel pipe and angle sections .My question is my top deflection under D+wind load is 1.11 m and i want this deflection to be under 0.7 m .What are the parameters that i should use to control it . following are the details pipe 12mmwhich i modelled as shell section because i have to connect angle sections inside the pipe sheet thickness:3mm angle 2l85x85xl, L50x50x4
  7. Hasan Tariq
    yes sir you are right and got your point .thank you so much
  8. Hasan Tariq
    If i have a 180 m stack and harmonic force is applied at the 140 m .I have to plot the peak amplitude response by varying the frequency of first three modes .. Is is possible that i can get the amplitude of 3rd mode greater than 2nd mode .??
  9. Hasan Tariq
    thanks sir
  10. Hasan Tariq
    Can any one suggest me the good book on random vibrations in structural dynamics other than clough ans penzine
  11. Hasan Tariq
    If we have tank size of 16x9x4 ft and we have to provide the steel in horizontal direction which is temperature shrinkage steel .Do we go for 0.003 or 0.006 of the gross area .?
  12. Hasan Tariq
    Dear sir , Thanks Can you sujjest me any good book for masonry design .Can you share the link of the book if possible
  13. Hasan Tariq
    JAZAKALLAH Sir If slab pannel would be acting as a sole foundation ,thn do this slab behave as a raft . In my case SOG is provided at the floor level and the foundation @depth of 8.5' down from FFL seperately. Do SOG is only be recommended for storage and machine operating areas ? .
  14. Hasan Tariq
    Can any one brief the basic definition of Slab on Grade .Where we need it and why .?
  15. Hasan Tariq
    JAZAKALLAH very informative
  16. Hasan Tariq
    I have designed using ASCE in which 40 psf has been reduced to 22 psf by incorporating different factors and yes torsion is the additional knowledge for me i will definitely look in to it JAZAKALLAH
  17. Hasan Tariq
    I have assumed the max depth of snow fall and multiply it with the unit weight of snow .and calculated the load as i have mentioned earlier
  18. Hasan Tariq
    I have assumed 40 psf snow load and apply on the model as a gravity load and in the load case consider snow as a dead gravity.Is that ok
  19. Hasan Tariq
    Dear Admin Thanks:) I have assumed one side as a roller and other as a pin and practically they are going to be bolted into the beam .and for the grade of steel i am using A 36 ( 36 ksi yield and 58 tensile ) correct me if i am wrong .
  20. Hasan Tariq
    Rojer that
  21. Hasan Tariq
    Hello, I am designing the mosque in zone 4 . The roof of the mosque is a Truss.I have following questions 1. Do truss rest on the beam ? if yes .? do i have to assign any support conditions ? or etab will selelct by default. 2. what will be the grade of steel for the truss ? yield or tensile strength. some one told me go for A 36 ( 36,58)
  22. Hasan Tariq
    Thanks sir can we have a ratio to compare so to have some direction to follow like how much times the stifness of the column is to consider the beam near to fixed or fixed .?
  23. Hasan Tariq
    If we have 2D single frame .What the etab consider the joint of beam and column .does the beam behave as a simply supported or fixed ? I am asking this question becasue while designing the houses we have bearing wall structure in which we do manual calculation .but on the beam i used to get confuse how to calculate the moent on them either consider it simply supported or what .Your kind advise is required
  24. Hasan Tariq
    thank you sir
  25. Hasan Tariq
    I am designing the mosque in which i have different storey levels i-e for praying hall i have 15' and for ablutions store, and room i have 12 ft .It lies in seismic zone 3 .Do i model it on same level .If yes then doesnt it affect the stiffness . If no than doesnt it make the model complcated by adding stories at different levels . Kind advise is required
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