All questions are supported by one or more of the references identified in this bulletin. Part I General Information PURPOSE OF THE EXAMINATIONS These examinations are required for professional licensure of Roofing Contractors by the Illinois Roofing Industry Licensing Act. Refer to the Act for a legal description of the profession and to determine which license you need to obtain.
The Tug-of-War Rope. General. The Tug-of-War rope is must be strong with no cuts or frays. It should be stretch resistant (don't use bungee!). The rope should not have loops which can cause compression injuries and may trap an injured person. Thickness. It needs to be thick enough for a firm grip to be made and to reduce the risk of the rope slipping, causing a burn or cut: 25mm (1inch) is the minimum diameter with 37mm (1Â½ inches) being about the widest. Length
There are however always exceptions, most notably the fact that rope is susceptible to degradation and damage in numerous ways that are not controllable by the manufacturer. It may surprise you to find out that the working load for most kinds of rope is between 15% and 25% of the tensile strength. Now consider the fact that any time you tie a knot in a rope you effectively cut the tensile strength in half. The knot when tensioned cuts the line.