Civil engineer guide to fighting positions, shelters, obstacles

AFH 10-222 Volume 14 1 August 2008 63
3.3.2.1. First Layer. The first layer of wire mesh containers for the ISO bunker
requires three sections of containers equal to nine bays. Begin by collapsing
one of the nine-bay sections to make a section that is eight bays long.
Next, break down another nine-bay section into two units with four bays
each. Align the bays as illustrated in Figure 3.8, ensuring the flaps at the bottom
of the units are folded out. Once the layout is complete, begin filling the
units in 9-inch lifts (approximately). Start from the center of the bays and fill
the bays in a uniform manner, ensuring some bays are not being filled faster
than others. Lightly compact the fill material after each lift using manual
hand tampers or by foot – do not use compacting equipment for this purpose.
Continue this process until all bays are filled. Compact the last layer in preparation
to construct the second layer of the ISO bunker. For more guidance on
infill procedures, refer to Chapter 2, the manufacturer’s instructions, or
TCMS.
Figure 3.8. First Layer – ISO Bunker.