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Published on Jan 8, 2011
A tutorial about how to reeve a block and tackle a Reverse Type or Three Fold Purchase[Tagalog]. Threefold purchase. Place two triple-sheave blocks 3 feet apart, with the hooks or straps facing outboard, positioning the blocks so one is face down and the other is cheek down. Start reeving in the center sheave of one block and finish in the center sheave on the other. Then splice the standing part to the becket. This tackle offers a 6 to 1 mechanical advantage. Reference: NGCP Basic Linemans Training. for more info http://www.globalsecurity.org/militar...