 Deccord linear charge. Cut a piece of double-sided tape 80 inches long. Peel one side and lay the tape flat on a table with the sticky side up. Cut and place a 92-inch piece of 50 grain per foot deccord strip down the center of the double-sided tape, keeping the deccord as straight as possible. Ensure that one end of the deccord is even with the end of the tape. Cut two 80-inch lengths of deccord, three for security doors, and place one on each side of the 92-inch piece of deccord. Ensure that the deccords are tight against each other for the entire length. Use duct tape and cover the deccord and tape. Use the end of the 92-inch length of deccord to form a bite. Use tape to make a buddy tab at the top of the charge and continue to run the tape down the length of the paper covering. This ensures easier separation of the end of the tape and its adhesive backing. Start at the bottom with the paper side inward and roll the charge. This ensures ease of charge placement and prevents the tape covering from cracking or coming off.