Civil engineer guide to fighting positions, shelters, obstacles

AFH 10-222 Volume 14 1 August 2008 113
5.4. Metal Revetments. Metal bin revetments are designed to provide shelter
or protection from low-angle, high-velocity fragments, shrapnel, and improvised
explosive devices. They can also be used as anti-ram vehicle barriers.
These types of revetments are made from some type of roll-formed metal,
typically 16-gauge or 18-gauge steel.
5.4.1. B-1 Revetment. The B-1 revetment comes in a kit that provides a 16foot
high, 82-inch wide, and 252-foot long steel bin revetment (Figure 5.16).
Due to the large concentrated mass of fill material required for this revetment,
it must be constructed on a stabilized ground surface or pavement. The cell
sections of the revetment are assembled in place or can be assembled on the
ground and lifted into place with the use of a crane. When filling, use a porous
material or a 1/2- to 3/4-inch gravel layer at the bottom to allow for
drainage, an impervious sheeting material along the sides to contain soil material,
and a waterproof cap to prevent fill saturation or FOD hazards. For
details on constructing B-1 revetments, refer to procedures outlined in TO
35E4-170-2, Aircraft Revetment Kit, Type B-1.
Figure 5.16. B-1 Revetment.