Vehicle Live Load Calculation
Vehicle Live Load Calculation
(OP)
We are building a boardwalk and I need to do some quick calculations to redesign the joists and beam spacing.
They spec a unified live load of 85 PSF
The have a design vehicle load of 2,600 LBS, load distribution consists of 60% to rear axle, axle spacing of 6', wheel spacing of 4', and tire print area of 11" wide x 3.5" long (in the direction of travel).
I'm trying to find out if the vehicle live load is greater than the uniform 85 PSF. If you could give me a few calculations how you came about it for future reference that would be great.
Thanks
They spec a unified live load of 85 PSF
The have a design vehicle load of 2,600 LBS, load distribution consists of 60% to rear axle, axle spacing of 6', wheel spacing of 4', and tire print area of 11" wide x 3.5" long (in the direction of travel).
I'm trying to find out if the vehicle live load is greater than the uniform 85 PSF. If you could give me a few calculations how you came about it for future reference that would be great.
Thanks






RE: Vehicle Live Load Calculation
RE: Vehicle Live Load Calculation
RE: Vehicle Live Load Calculation
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Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Vehicle Live Load Calculation
Does your client require the design to conform to AASHTO? I had a similar project and we were required to use AASHTO.
Here's what AASHTO Standard Specs say on tire contact area. (NOTE the last sentence; you're nowhere near HS20.)
3.30 TIRE CONTACT AREA
The tire contact area for the Alternate Military Loading
or HS 20-44 shall be assumed as a rectangle with a
length in the direction of traffic of 10 inches, and a width
of tire of 20 inches. For other design vehicles, the tire contact should be determined by the engineer.
RE: Vehicle Live Load Calculation
RE: Vehicle Live Load Calculation
RE: Vehicle Live Load Calculation
RE: Vehicle Live Load Calculation