There are three steps in assembling a detonating cord system:
Lay the ring main.
Lay the branch lines and connect them to the ring main.
Prime the charges.
Ring Main. A ring main is a continuous loop of detonating cord. See Figure 42. The loop is laid from the
initiating point, past each group of munitions to be destroyed, and back to the initiating point. The ring main
distributes the explosive energy shockwave from one point to another in order to explode several individual
explosive charges simultaneously. The length of a ring main may range from a few feet to several miles,
depending on the size of the mission. Because of its length, the ring main should be laid using the 1,000-foot
spool of detonating cord. However, it may still be necessary to connect several spools of cord together in order to
complete the ring main. If necessary, splice the cord together as follows:
Splice using the M1 detonating cord clip. See Figure 43, Page 30.
Splice using the detonating cord connector. See Figure 44, Page 30.
Splice using a square knot. See Figure 45, Page 30.
Figure 42. Ring main.