Do you have any kind of sketch or plans you can share with me?
try sending to***@******.***
Let me know on this Chat Page after you send it, then I will check for the file
Let me take a look
I’d like to point out that a Professional Engineer’s standard of care typically includes a site visit to assess field conditions and get an overall understanding of the structure. This can obviously not be accomplished through the internet. The information provided here is meant for planning purposes only (general sizing and budgeting) and is based on the information provided by you. All loading cases considered are for vertical loads only, no lateral analysis has been completed. The information should be verified by a professional engineer who can visit the site to ensure that potentially important information has not been overlooked or omitted.
Assuming a Live Load of 20 psf and a Dead Load of 10 psf, member span of 10' and a tributary load width of 4', you can use the following:
4" deep members
C 4x5.4 (5.4 plf)
4"x2" x3/16" structural steel tubing (6.87 plf)
8" deep members
C 8x11.5 (11.5 plf)
8"x2" x3/16" structural steel tubing (11.97 plf)
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I would use the structural steel tubing, due to the fact that it has much better lateral stability than "C" channels.
You are correct, sorry I was looking at C Channel sections.
You can use 8" depth C-Purlins that are 16 gauge for your span.
I still like the use of the 4x2 x 3/16" tubes.
sorry for the delay
you are correct, your best option for your 10' span with a tributary width of 4', is a 4"x2" x3/16" structural steel tubing (6.87 plf)
that is the purlin you can use in either case, since the loading is the same
sorry for the confusion, let me run numbers for a 20' span purlin
for a 20' span, you can use a 5"x4" x1/4" structural steel tubing (13.91 plf)
f you feel you have received a satisfactory answer to your question, click the Rating button that is appropriate. Experts are credited for each adequately Rated answer they provide. If you have additional questions, please let me know. Thanks