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walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 2566
Experience:  Over 30 years of Structural Engineering experience.
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What type of joist support... (Trying again here, having

Customer Question

What type of joist support... (Trying again here, having issue connecting via JustAnswer)
Submitted: 1 year ago.
Category: Structural Engineering
Expert:  walkereng replied 1 year ago.

can you explain your configuration in a bit more detail?

Customer: replied 1 year ago.
Sure. Follow up from previous help. Need to install new joist into our 747 art project. I've realized that I need to get to a minimum 100# ***** load. I've also realized that where the new staircase is going to be installed I can add some posts for support, plus for transportation purposes I need to run two steel beams underneath the existing deck.The questions are: What size beams to run under the existing joists? What type of spacing for the support posts? And with the additional new joists, if it's not going to be a true 16' clear span but instead has two support beams underneath, what size joists need to be installed? I want the deck to be strong, but 8" C channel is both expensive and very heavy to work with.See attached PDF.
Customer: replied 1 year ago.
The basic questions and assumptions are on the last page of the PDF. (Probably should have put them on the first page.)
Expert:  walkereng replied 1 year ago.

I will reply to the other original question, if that is OK with you.

Expert:  walkereng replied 1 year ago.

you seemed to have attached the same document to both.

Customer: replied 1 year ago.
Customer: replied 1 year ago.
Switch to the other. Whatever is the easiest.