To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
Subject: RE: Payloader Slab Design
From: "Scott, William N." <William.Scott(--nospam--at)veco.com>
Date: Mon, 17 Apr 2000 09:51:23 -0600
Contact the equipment manufacture. They are usually willing to fax a data
sheet for the equipment that shows size, weight, and wheel load
From: Ed Fasula [mailto:tibbits2(--nospam--at)metro.lakes.com]
Sent: Monday, April 17, 2000 7:40 AM
Subject: Payloader Slab Design
How would one appropriately design for heavy equipment loads on a concrete
We have a grain storage building with a 4' reclaim pit over which a
reinforced 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 seems 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" which 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.
Ed Fasula, E.I.T.