CALCULATION OF DRUM CAPACITIES
CAPACITIES IN FEET OF ROPE (A + B) ACM
How much 1/4″ diameter rope can be spooled on a drum having a 36″ diameter flange, 24″ diameter drum and 30″ width between flanges?
Using the above formula the number of feet equals (6 + 24) x 6 x 30 x .152 Answer — 821 feet. The value of “M” is taken from the previously calculated table of values shown below. For 1/4″ diameter this value “M” is .152
Values for M