12 August 2002
Army FOD Cover Assembly Procedures
2-3.1.1 This FOD cover is referred to as an FRP mat. The Army ADR kit contains
FRP panels in three sizes. There are four full-size panels (5.49 meters by 2.01 meters
by 12.7 millimeters thick [18 feet by 6.6 feet by 0.5 inch thick]); two right-half panels
(2.62 meters by 2.01 meters by 12.7 millimeters thick [8.6 feet by 6.6 feet by 0.5 inch
thick]); and two left-half panels (2.83 meters by 2.01 meters by 12.7 millimeters thick
[9.3 feet by 6.6 feet by 0.5 inch thick]). When assembled, this cover will cap one crater
7.6 meters (25 feet) in diameter.
2-3.1.2 Assembled mat dimensions are 8.11 meters by 8.11 meters (26.6 feet by 26.6
feet). On one side and on one end of the mat are holes 63.5 millimeters (2.5 inches) in
diameter for inserting anchor bushings or connector bushings.
2-3.1.3 Position the panels on a smooth level surface for assembly. Assemble in a
Install and tighten panel-connecting bolts as each row of panels is aligned.
2-3.1.5 Pull the assembled mat into position over the crater. The mat must overlap the
crater edges by at least 304 millimeters (12 inches) on each side.
2-3.1.6 Secure the mat on the leading and trailing edge or perpendicular to the direction
of flight. Drill pilot holes for the anchor bolts.
2-126.96.36.199 Concrete anchoring uses a Wej-it anchor bolt. There are two sizes of
Wej-it bolts in the kit: the bolt 177.8 millimeters long by 15.9 millimeters in diameter (7
inches long by 0.625 inch in diameter) is installed using rotary hammer tools; the bolt
177.8 millimeters long by 19.1 millimeters in diameter (7 inches long by 0.75 inch in
diameter) is placed with the SEE (for this bolt, a pilot hole must be drilled 203
millimeters [8 inches] deep with a 19.1-millimeter [0.75-inch] bit).
2-188.8.131.52 Asphalt anchoring consists of a screw spike style F head. This screw is 152.4
millimeters long by 19.1 millimeters in diameter (6 inches long by 0.75 inch in diameter). A
pilot hole must be drilled 177 millimeters by 15.9 millimeters in diameter (7 inches deep by
0.625 inch in diameter).
Air Force FFM. Air Force FFM is manufactured by Rapid Mat US Inc., 3112
M Street, Washington, DC, 20007, phone (202) 295-9097. Mat manufacturing takes
place at 8478 Old Monroe Road, Bastrop, Louisiana, 71220-5646.
2-3.2.1 The FFM is air-transportable, can be moved easily by vehicles, can be
positioned at greater distances from airfield pavement surfaces, and can be stored
indoors out of the elements.