A containment wall, three meters high shall be constructed in front of each door to the shoot house so that it intercepts a round fired through the door from any point inside the door. A steel catwalk with railing and an exterior access stairwell will be constructed to provide views of all training rooms from above. Exterior ballistic walls and minimum of 2.5m from the top of the deck of the catwalk to the bottom of the lowest surface of the roof structure/ roof system. The floor must be a non-porous, sealed, concrete slab. The interior surface of the AR500 steel walls (5/8 inch or 1.6 cm minimum thickness) will be covered with fire retardant ballistic rubber panels (4 inch or 10.16cm minimum thickness). Doors will be wood doors with wood frames.

Design & Construction of 350m Moving Armor Target (MAT) Wall

The Bulgarian training area needs repair of a 350 meter permanent MAT wall, track foundation, and a new trolley house shelter. The MAT wall must be constructed of concrete block wall. A shelter for the target trolley to be stored will be constructed of reinforced concrete or masonry blocks, at the beginning of the track at the Southernmost end. The 350 Meter track (provided and installed by the user) willbe installed on a service road/track bed, with no more than a 2% level of grade change, with structural fill and drainage for the area.