Figure 11-22.AM-2 mat installation sequence (with guide rails96-foot-wide runway).
7. Begin laying the 78-foot side of matting for the
length of the guide rail and matting as aligned in step 6.
Transverse mat joints should not vary more than 3
inches between the 18-foot and 78-foot-wide section of
the runway where joints meet the guide rail and the mat.
Installation of the 78-foot side may lag behind the guide
rail and the 18-foot side but should never be installed
beside the guide rails that have not yet been aligned
according to step 6.
8. Install the next five guide rails. Guide rail joints
should never be closer than 3 inches in reference to the
transverse mat joints. (See fig. 11-23.) To ensure the
3-inch distance between the mat and guide rail joints,
substitute a 9-foot length of guide rail for a 10-foot
guide rail. Lay matting on the 18-foot side and then the
78-feet side. (See steps 5,6, and 7.) Continue installing
the runway until 100 feet of the matting has been laid.
NOTE: A minimum of ten gap gauges should
remain installed to the rear of the guide rail dowel pins
9. Every 100 feet, install typical keylocks across
the runway. Typical keylocks cannot be secured to the
guide rail. Cut keylocks in 6-foot sections, as necessary,
to ease installation on the 18-foot and the 78-foot sides
of the guide rail. Refer to the section discussed
previous] yin this chapter on Mat-Laying Procedures