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# Re: SLAB ON GRADE: Truck Wheel Load

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• To: seaint(--nospam--at)seaint.org
• Subject: Re: SLAB ON GRADE: Truck Wheel Load
• From: BCainse(--nospam--at)aol.com
• Date: Thu, 26 May 2005 10:19:28 EDT
 Bill- If you have wheel loads (and distribution), the actual contact area can be determined from those weights and the tire pressure. i.e., Contact Area = wheel load/tire pressure.  If you have actual weights, you should be able to determine the tire widths associated with those weights by observing the typical tires on the trucks you've weighed.   HTH, Bill Cain, S.E. Berkeley CA   In a message dated 5/26/2005 7:00:28 A.M. Pacific Daylight Time, bill.polhemus(--nospam--at)tyson.com writes: From: Candi Anderson [mailto:canderson(--nospam--at)mercadoeng.com] Sent: Thursday, May 26, 2005 8:30 AMTo: seaint(--nospam--at)seaint.orgSubject: RE: SLAB ON GRADE: Truck Wheel Load Bill- H-20 and HS-20 axle load is 32k.  Tire contact area is a rectangle w/ length in direction of traffic = 10” and tire width = 20”. Candi     Thanks, Candi.   I'm assuming that this would work out to Wheel Load = 32,000#/2 = 16,000#, and Tire Pressure = 16,000#/(10")(20") = 80 psi.   That's important because we're using a lesser load for grade slab design for "chicken trucks" based on typical weigh values, and I want to make sure I got the contact area correct.   Thanks once again.This email and any files transmitted with it are confidential and intended solely for the use of the addressee. If you are not the intended addressee, then you have received this email in error and any use, dissemination, forwarding, printing, or copying of this email is strictly prohibited. Please notify us immediately of your unintended receipt by reply and then delete this email and your reply. Tyson Foods, Inc. and its subsidiaries and affiliates will not be held liable to any person resulting from the unintended or unauthorized use of any information contained in this email or as a result of any additions or deletions of information originally contained in this email.