PULP UNITS BAND INFORMATION

The minimum strength of banding shall be:

Safety Factor x ½ weight of units x secant of bridle angle.

Secant of bridle angle of 40 degrees is 1.3.

Total wire strength (answer from above) divided by strength provided by a single wire = required wires.

Example:

Unit weight 4,000 lbs.

Individual wire strength = 1,758 lbs.

Safety factor = 4

Equation:

2,000 x 4 x 1.3 ¸ 1,758 = 5.9 wires, i.e. 6 wires.