Arch Trusses?
hello crazy engineer!! cn u guys guide me to do this..i just finish my last sem exam and get this job...im got no experience at all in this field TT...this is just to crazy for me...
im supposed to check if this truss is safe...ive attached its picture..
width of arc = 129'
rise=7'(for now)
supporting column height = 9m
top chord = 5" black pipe , btm chord = 5" black pipe (grade A)
member inside = 2" black pipe (grade B)
support = pin-pin (my assumption)
loading > roof material+purlin ( 2kn/m2)
> wind loading = nil (no idea)
i am really gratefull if u guys cn help me on this...>.<
im supposed to check if this truss is safe...ive attached its picture..
width of arc = 129'
rise=7'(for now)
supporting column height = 9m
top chord = 5" black pipe , btm chord = 5" black pipe (grade A)
member inside = 2" black pipe (grade B)
support = pin-pin (my assumption)
loading > roof material+purlin ( 2kn/m2)
> wind loading = nil (no idea)
i am really gratefull if u guys cn help me on this...>.<
Replies
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Pilix1992this is the full picture of the structure
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Sumukh MadgaonkarIs there any soft ware available with you or you are expected to do it manually?
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Pilix1992hmm im nt provided with software....bt i tried to download some such as
(10 day left trial)staadpro...and sap2000 17 (cracked bt i need to change date on my pc 1st b4 i cn use it)
i also tried to do it manually...bt i just dnt knw how to do this.. -
Sumukh MadgaonkarHmm...... then its a bit tidious
Preliminary you can start of for gravity loads.
calculate UDL and moments assuming one side pinned other side roller
calculate forces by method of joints
wind loads you need to refer corresponding code -
Pilix1992what do you mean by gravity load?weight from roof material+purlin+arch selfweight?
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Sumukh Madgaonkaryes........
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Pilix1992sorry for the incovenience T.T
actually i am also confused by the shape of the curved member...if im using the method of joints am i going to used the curved one or assume it is straight? -
Sumukh MadgaonkarFor the given joint I think you can assume it to be straight. Discuss it with the one whom you need to submit. Each one has their own way of thinking.
By the way which company and where are you working out this for?
I believe instead of discussing it here, better do it with your senior face to face.
Just getting an idea here is more than enough.....what say? -
Pilix1992what I can say that this is the 1st analysis of this company...handed to 1st timer....has no seniors at workplace...ive jump from one forum to another seeking for hlp ^^....ok i proceed with the loading and method and joint 1st...thx
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Sumukh MadgaonkarOOPS!!!!
Then you are probably the new businessman and owner of the company.......
Where is this happening? -
Pilix1992u are teasing me ri8?=-= im from malaysia..
sriusly..im jz a one bad employee... -
Sumukh MadgaonkarNo my dear friend dont loose faith.
I was just joking.
Anyways please let me know if you need any more help..... -
Pilix1992๐ ok thx...Ill try my best
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Ramani AswathWill this help?
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Pilix1992
I already read that before, still cnt do it...>.< btw thx....A.V.RamaniWill this help? -
Stanley Shumis it a trussed arch or a space trussed arch. the arch will create a horizontal force at each end of the support. therefore u need to provide a horizontal tie at the supports. u u don't want to provide horizontal ties, then the posts have to be designed at cantilever beam column with the horizontal forces transfer to the foundation by means of a transfer footing or piles.
for design purpose, sap2000 will be the job.
for a trussed arch, watch the following clip,
for a space trussed arch, watch the following clip,
You are reading an archived discussion.
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