From: "Sprague, Harold O." <SpragueHO(--nospam--at)bv.com>
Date: Mon, 17 Apr 2000 13:24:20 -0500
One additional reference that might be of help:
Concrete Engineering Handbook, LaLonde & Janes, McGraw Hill, 1961, Chapter 9
Section "Concentrated Loads on Floor Slabs". It is a good article and
includes the overlapping effect of multiple concentrated loads.
> >>How would one appropriately design for heavy equipment loads on a
> We have a grain storage building with a 4' reclaim pit over which a
> concrete slab will span. Is using AASHTO moment formulas (sections
> 188.8.131.52 &
> 2) and scaling for a 86 kip Payloader (with impact), appropriate? It
> the Payloader wheel distribution would be significantly different from a
> HS 20
> truck. Using 3.30, Tire Contact Area, assuming 40 kip on each wheel, A =
> .01*40,000lb = 400 in^2, which gives length = 31.6" and width = 12.7"
> seems in the ballpark...
> Also, AASHTO 3.24.4, which states that shear would not need to be checked,
> seems to be a clearly inappropriate assumption to make in this particular
> situation. But what would the assumed shear distribution be, 12.7"?
> Thanks in advance for any help.<<