Figure 11-9.Female keylock.
Steps for Laying AM-2 Mats and Keylocks
The procedure for laying AM-2 mats and keylocks
is shown in figures 11-10 through 11-18 and consists
of the following steps:
1. Lay starter keylocks on the transverse center
line of the runway. (See fig. 11-10.) A 9-foot starter
keylock is laid at the outer edge of the runway. Remove
the socket head screws from the keylock to allow for
extending the locking bars into the next keylock section.
2. Place a 12-foot starter keylock next to, and
aligned with, the 9-foot section. Move the 12-foot
section against the 9-foot section, and adjust the locking
bar so the socket head screws secure the locking bar in
each section this procedure secures the 9-foot starter
keylock and the 12-foot starter keylock, as shown in
detail A of figure 11-10.
3. Repeat laying six more 12-foot sections and one
3-foot section of starter keylocks to complete the
96-foot width of the runway.
NOTE: Initially, lay several transverse rows of
AM-2 matting in one direction only from the starter
keylock row. If matting is started on both sides of the
starter keylock, a seesaw force could result, disturbing
the alignment of the entire field.
4. With the nonskid side of the mat turned up and
the upturned prongs on the right, align the first mat (half
mat) on the left side with the starter keylock (fig. 11-11).
Align the downturned prongs with the runway edge.
Hook the female edge of the mat into the groove on the
starter keylock (fig. 11-12) while holding the mat in an
angular position. Rotate the mat downward to form the
joint. (See fig. 11- 12.)
5. Lay the second and all successive mats the same
way as the first mat (fig. 11-11) in relation to the starter
keylock. The downturned prongs of the second mat
should mate with the upturned prongs of the first mat,
as shown in figure 11-13. When the mats are properly
engaged, a rectangular slot is formed by the engagement
of the end connectors.
6. Lock the first and second mats together, as
shown in figure 11-14, by inserting the locking bar (fig.
NOTE: The first two mats and all mats in the first
row should be aligned accurately before inserting the
locking bar. Misalignment of mats will prevent proper
installation of the second row. Locking bars may stick
Figure 11-10 Placing starter keylocks on a transverse center line.