Fire Truck Load
Fire Truck Load
(OP)
I've always used the the worst moment and shear possible listed in the Civil Design book by Seelye (great book if you don't have it!)for my span when designing residential bridges.
i.e. Span=24';M=144 k*ft (H15); M=144.5 k*ft (HS15);
M=192 k*ft (H20); M=192.7 k*ft (HS20);
->use 192.7 for moment on bridge
My thoughts were, a concrete truck has to get across it to pour the footings and do any other concrete work, and, a firetruck must be able to pass over it.
I can't find anything in any of my reference books that states what highway loads these really would be classified as. I don't care if I am overdesigning, I just want to make sure I'm not under designing. Any suggestions or references?
i.e. Span=24';M=144 k*ft (H15); M=144.5 k*ft (HS15);
M=192 k*ft (H20); M=192.7 k*ft (HS20);
->use 192.7 for moment on bridge
My thoughts were, a concrete truck has to get across it to pour the footings and do any other concrete work, and, a firetruck must be able to pass over it.
I can't find anything in any of my reference books that states what highway loads these really would be classified as. I don't care if I am overdesigning, I just want to make sure I'm not under designing. Any suggestions or references?






RE: Fire Truck Load
The H-20 loading is basically 36 kips per axle.
RE: Fire Truck Load
RE: Fire Truck Load
Weight = 73,500 lbs,
Wheel base = 252",
Front axle = 21,500 lbs,
Rear axle = 52,000 lbs'
Plus impact.
That's what we used ones for design of structure near fire station. Who knows what they may get in 5 years.
Good luck.
RE: Fire Truck Load