1. ERDC Knowledge Core
2. Engineer Research and Development Center (ERDC)
3. Geotechnical and Structures Laboratory (GSL) - (2/23/2001 - present)
4. Publication
5. Technical Report

Title:	AM2 3-4 alternate lay pattern evaluation
Authors:	United States. Naval Air Systems Command. Air Force Civil Engineering Center (U.S.) Rushing, Timothy W. Garcia, Lyan I. Tingle, Jeb S. Allison, Paul G. Rutland, Craig A.
Keywords:	AM2 Landing mat Aluminum mat Airfield mat Airfield damage repair Expeditionary airfield Mat Airfield Damage Repair Modernization Program (U.S.)
Publisher:	Geotechnical and Structures Laboratory (U.S.) Engineer Research and Development Center (U.S.)
Series/Report no.:	ERDC/GSL TR ; 14-38.
Description:	Technical Report Abstract: AM2 airfield matting has a long history of successful performance as an expeditionary airfield surfacing system. Logistical considerations for shipment of AM2 by the U.S. Marine Corps require equal numbers of 6-ft and 12-ft-long AM2 panels to be delivered to all project sites, resulting in far more 6-ft panels than are necessary to create a standard brickwork pattern. Therefore, the 3-4 alternate lay pattern was designed to allow Marines to use any mats on hand to fill in designated portions of the matted areas. Using the 3-4 pattern, as many as six continuous longitudinal joints are allowed, compared to only one with a brickwork pattern. A test section was constructed using the 3-4 pattern and trafficked by simulated F-15E and C-17 traffic. The test results showed a reduction in allowable passes of 92 to 96 % when compared to the brickwork pattern for an installation directly over a subgrade with a California Bearing Ratio of 6. Based on these results, the 3-4 pattern is not recommended for runways or high-speed taxiways, nor for soft soil installations.
Rights:	Approved for public release; distribution is unlimited.
URI:	http://hdl.handle.net/11681/10378
Appears in Collections:	Technical Report