Breaching Technologies Strip_Lock Explosive Breaching Door - Manual (Page 10)

Explosives
The BTI Strip/Lock Explosive door is designed to function with “pushing type” charges
only. The use of shape and cutting type charges will only damage the door and
increase the risk for injury.
The door is designed to operate with typical operational weight “PUSHING TYPE”
charges only. The use of excessive charges will only lessen the life of the door and
increase the chance of injury.
Typical methods of backing material for the charges are polyethylene, rubber conveyor
belting and other plastic materials. Note that the chosen backing materials become
fragmented projectiles during the subsequent explosion.
BTI personnel have also utilized “water bag” type charges that generate acceptable
pushing type results.
Note that detonation cord is manufactured in many different explosive weights. The
military commonly utilizes 54 grains per foot detonation cord. Always determine the
total explosive weight of any charge.