private property bridge beam size 1

[buildersteve]

I am getting ready to demolish an already collapsing bridge on my property. It's made of 7 steel gas pipes, each 25' long, 8 1/2" in dia., with a pipe wall thickness of 3/8" thick. The actual span is 22' long by 12' wide. I'd like to replace it with I or H beams, and capable of holding a 10,000 pound load driven over it. I will be using steel grating as the surface material. There will be concrete embuttments at both ends of 24" thick. From the embuttment surface to the road grade is 19", and the bridge will not have a slope. I prefer a 4 beam design so there will be a pair with some separation on each tread side. Any thoughts would be greatly appreciated.

 

[PEinc]

Unless there is alternate access, your bridge should be strong enough to carry heavy trucks such as heating oil delivery trucks, moving vans, and emergency vehicles like fire trucks. You may even want to bring in a concrete truck at some point in time. These vehicles can have axle loads greater than 10,000 pounds. 22' is not a very long span. Don't skimp on the vehicle design load.

 

[buildersteve]

Good idea,but what size, thickness, and number of beams would it take to handle such loads?

 

[HgTX]

That's the kind of answer licensed engineers give for a fee.

Hg

Eng-Tips guidelines: faq731-376