Figure 11-11.Placing first and second mats
Figure 11-12.Engaging first half mat (half length) to starter keylock.
because of the natural waviness in the manufacture of
the mat end connectors and the locking bars. A few
light taps of a hammer should drive the bar into the
7. Place the third mat at the start of the second row,
as shown in figure 11-16. Ensure that the third mat is
aligned on the left side with the mat in the preceding
row. Refer to figure 11-12 and step 4 for the engagement
procedure, which is the same for the engagement of the
third mat with the first and second mats.
NOTE: The first row of mats and each alternate
row thereafter is laid using half mats at the outer edges
of the runway and full mats in between (fig. 11-6). The
second row of mats and each alternate row thereafter
is laid using full mats only. This method provides a
staggered joint for greater matting strength.
8. Complete the first row, installing six more
full-length mats and finally a half mat, using the same
procedure as described for installation of the second
mat. (See step 5.)
NOTE: The first row of mats on the opposite side
of the starter keylock row are all full mats (fig. 11-6).
Align the first row accurately with stakes
or guidelines delineating the extent of matting.
As work progresses, periodically check the
alignment of mats already installed. Any
misalignment causes a displacement of the
runway from the planned position at the far end
of the field.
9. Install the second and succeeding rows
according to the procedure for the third mat (first mat
in the second row) with one notable exception. The
second mat in each row must first be hooked to the