Download Intermediate Rigging Exam Prep Questions & Answers. and more Exams Public Health in PDF only on Docsity! Intermediate Rigging E xam Prep Questions & Answers. What is the distance from a compacted soil - Correct answer 1.5 ×depth? What is the distance from compacted soil - Correct answer 1×depth? How far past tracks must mats be - Correct answer 2' Name 2 methods for cribbing - Correct answer 1) area of float ×3= blocking area 2) Crane capacity ÷5= blocking area How level must cranes be - Correct answer 1% or .57° What is the formula for leverage - Correct answer Weight × distance = weight × distance How far must you type off the crane - Correct answer 2' from the counter weights? What is the wind speed that stops hoisting operations - Correct answer 25-30 MPH? At what speed do you stop hoisting personnel - Correct answer 20 MPH When is side loading okay - Correct answer only with a freely suspended load What is effective weight - Correct answer everything below the boom tip Who must sign off on new signals - Correct answer the operator, signal person, lift director? What is the best tag line to use for work near power lines - Correct answer Polypropylene? What does it mean when you have localized narrowing of outside diameter of wire rope - Correct answer Broken core What is RRL - Correct answer Right regular lay What is EIPS - Correct answer Extra improved plow steel? What is IWRC - Correct answer Independent wire rope core? What percentage of diameter can wire rope not go below - Correct answer 95%? Gross capacity is the same as - Correct answer Allowable line pull Gross capacity- deductions equals - Correct answer Net capacity What is the capacity for crane on outriggers, tire, track - Correct answer Outriggers= 85% Tires=75% Tracks=75% What does everything above the bold line on a load chat mean - Correct answer more likely to break? What does everything below the bold line on a load chat mean - Correct answer more likely to tip over? What is the safety factor for slings - Correct answer 5? What is the safety factor for chains - Correct answer 4? What grade must the steel chain be for lifting operations - Correct answer 8/ 80/ 800? How many broken wires are required to make a standard running rope unusable - Correct answer 3 per strand per lay, 6 random per lay How many broken wires are required to make a rotation resistant running rope unusable - Correct answer 2 per strand per 6 rope diameters, 4 per strand per 30 rope diameters? How many broken wires are required to make a standing rope at end fittings unusable - Correct answer 1? How many broken wires are required to make a standing rope at mid area unusable - Correct answer 2? How many broken wires are required to make a wire rope sling unusable - Correct answer 5 per strand per lay, 10 random per lay What is the sling stress for 90° - Correct answer 1.000? What is the sling stress for 60° - Correct answer 1.155? What is the sling stress for 45° - Correct answer 1.414? What is the sling stress for 30° - Correct answer 2.000? What is the sling stress for 5° - Correct answer 11.490? What is ANSI standard for hook twist opening and wear - Correct answer Twist 0°