pedestrian bridge live load
pedestrian bridge live load
(OP)
This job is in the preliminary/proposal stage.
Single span pedestrian bridge to also support golf carts, no vehicles. 8ft wide by 40ft long, simple span over a canal, steel beams...
I don't currently own this but will order it:
LRFD Guide Specifications for Design of Pedestrian Bridges, 2nd Edition
Does this have all of the loading and basic design criteria?
I have seen a range of live loads given online, for preliminary purposes can I use 85psf? Any thoughts on the golf carts (live load plus concentrated load?) would be welcome.
The client wants bar-grate decking. Obviously we will need guard rails, should we automatically go to a truss design which combines the bridge girders and guardrails (using HSS)? Or will two wide flange beams with cross members, and separate guard rails be just as simple and therefore economic?
Everything will end up being hot-dip galvanized.
Thanks for your input!
Single span pedestrian bridge to also support golf carts, no vehicles. 8ft wide by 40ft long, simple span over a canal, steel beams...
I don't currently own this but will order it:
LRFD Guide Specifications for Design of Pedestrian Bridges, 2nd Edition
Does this have all of the loading and basic design criteria?
I have seen a range of live loads given online, for preliminary purposes can I use 85psf? Any thoughts on the golf carts (live load plus concentrated load?) would be welcome.
The client wants bar-grate decking. Obviously we will need guard rails, should we automatically go to a truss design which combines the bridge girders and guardrails (using HSS)? Or will two wide flange beams with cross members, and separate guard rails be just as simple and therefore economic?
Everything will end up being hot-dip galvanized.
Thanks for your input!






RE: pedestrian bridge live load
I think 90psf should cover just about everything. Based on your surface area, 90psf is probably equivalent to at least 20 golf carts with two people in them.
Also, the specs require that a barrier be in place to prevent vehicles from crossing the bridge. Otherwise you have to design for H5.
I think two WF's would be cheaper. You could try calling ConTech - they manufacture these types of bridges.
RE: pedestrian bridge live load
I say this because our local greenbelt walkway/bikeway is basically a wide sidewalk with motorized vehicles prohibited. But cops still drive their cars on it. The little bridges on it are rated for 5,000 lbs, I think.
RE: pedestrian bridge live load
You are thinking we would need barriers even with an 8ft wide bridge?
RE: pedestrian bridge live load
It's called "LRFD Guide Specifications for the Design of
Pedestrian Bridges" (December 2009).
Let me clarify "barrier". I meant something to physically prevent a vehicle from getting on to the bridge. I wasn't referring to a railing to protect pedestrains on the bridge.
RE: pedestrian bridge live load
RE: pedestrian bridge live load
RE: pedestrian bridge live load
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
RE: pedestrian bridge live load
BTW the Army Bridge Manual says tracked vehicles range from 4 to 150 Tons.
RE: pedestrian bridge live load
RE: pedestrian bridge live load