huangyhg

help with wind loading
lets say you have a gable roof supported with only 1 wall and the rest with columns(and knee brace for fixity). the roof is supported by trusses that sit on a shoulder beam on the single wall and on beam on the other side. what is the "proper way" to get the wind loading? i just feel that the asce is impossible to understand. can someone maybe guide this dumb me? theoratically i cant use 1st (simplified) method since there is only one wall, right? my boss told me to just use simplified method but i am totally disagree with him. but then again i tried to read the analytical method (and the appendix) and i am still confused. can someone enlighten me?
never, but never question engineer's judgement
we always use the analytical method (so i am not sure of the restrictions on the simplified method). all of the paramaters in asce 7 are pretty straightforward for the analytical method. do you have any specific questions?
you can’t use the simplified method because section 6.4.1.1 number 3 states that the building must be enclosed per section 6.2.
don’t think you meet that requirement.
i think you’re stuck with the analytical method. i have been attempting to use this as well and it doesn’t seem too bad providing you follow 6.5.3. asce also puts out a handy design guide called "guide to the use of the wind load provisions" which i found to be very useful.
hope this helps..
eit, i guess i am not very good when it comes to reading codes (english is not my 1st language but i think that isnt the case). i didnt find it very straight forward. i will look for that book fast boater. at the mean time, can you maybe do a dummy version of analytical method for me? lets say my wind speed is 100 mph category c.
never, but never question engineer's judgement
how tall is the building?
you will need to calc the windward pressure and the leeward pressure and add the two.
is this the the "building" with one wall that you mentioned above?
yes. it is 30 ft by 17 foot platform. the roof is a bit larger (3.5' overhang). mean roof height about 15 ft.
never, but never question engineer's judgement
what version of asce are you using 02/05?
05

never, but never question engineer's judgement
i hope this helps. i am sure its not perfect.

wow, i appreciate your time fastboater. i will go through it. i tend to follow examples better than the codes.
never, but never question engineer's judgement
the windspeed is 3 second gust already so i dont have to do gf? right? just make it = 1?
never, but never question engineer's judgement

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