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
Most equipment manufacturers specify that the rope used should have very low stretch, and that its tensile strength be matched to the cable pullerâs maximum pulling force, using a minimum 4:1 safety factor. So a cable tugger with a maximum pulling force of 8000 lbs. should use a pulling rope with a breaking strength of 32,000 lbs or more. Twisted polypropylene rope can be used to pull heavier ropes, or sometimes to pull cable.