Fire Truck loading using AASHTO LRFD
Fire Truck loading using AASHTO LRFD
(OP)
There are a number of older threads on the topic of fire truck loading on this site. None of these seem to reflect the HL-93 notional live load model currently used for bridge design under AASHTO LRFD.
I have an underground parking garage which will have a fire truck access lane at the highest (grade) level. For the access lane support structure, I wonder whether the HL-93 loading is appropriate for this condition... or should I do some research including fire truck manufacturers as suggested by previous threads?
Thanks.
I have an underground parking garage which will have a fire truck access lane at the highest (grade) level. For the access lane support structure, I wonder whether the HL-93 loading is appropriate for this condition... or should I do some research including fire truck manufacturers as suggested by previous threads?
Thanks.






RE: Fire Truck loading using AASHTO LRFD
I faced a similar problem a few years ago. You probably came across it in one of my threads. I struggled with the problem for quite some time. I called a mfr. only to find out that they design their outrigger pads, which were 24" x 24" at the time, for 100 psi (I think). In the end I ended up using loading that was represented by the City of Denver building code which can be found here:
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If you go to page 68, you will find the loading they recommend specifically for fire trucks. It is the only code that I have seen that specifically gives you the loads you are to design for.
Does this fit your application... you will have to decide.
RE: Fire Truck loading using AASHTO LRFD
RE: Fire Truck loading using AASHTO LRFD
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask