Wire rope swl - Study guides, Class notes & Summaries

Millwright Rigging & Lifting Exam Questions With Verified Answers 2024/2025 The breaking strength of rope is a. force needed to pull rope b. force needed to tear rope c. force needed to break the rope d. force needed to stretch rope - answerc. force needed to break the rope What are spreader beams used for? a. calculate loads b. use on heavy lods c. support loads during lifts d. support long loads during lifts - answerd. support long loads during lifts What are equalizer beams used f...

Millwright - Rigging and Hoisting Exam Questions With Verified Answers 1. Of a block and tackle with five rope falls and minimum friction, how much force is needed to retain 250lbs? a. 50 lbs b. 100 lbs c. 250 lbs d. 75 lbs - answera. 50 lbs 250lbs/5 = 50 lbs 2. What diameter rope is needed to support two tons using a vertical lift? a. ½" b. ¾" c. 1" d. ¼" - answera. ½" 3. What is the standard safety factor to consider for a platform supporting people? a. 1 : 1 b. 5 : 1...

Signal Person Qualifications (OSHA) 1926.1428 Hoisting Personnel (OSHA) 1926.1431 Authority to Stop (OSHA) 1926.1418 Powerline Safety (OSHA) 1926.1407 thru 1926.1411 Scope (OSHA) 1926.1400 Inspections (OSHA) 1926.1412 Tower Cranes (OSHA) 1926.1435 Wire Rope Inspections (OSHA) 1926.1413 Mobile Cranes (ASME) B30.5 Slings (ASME) B30.9 Hooks (ASME) B30.10 Jack's (ASME) B30.1 Personnel lifting systems (ASME) B30.23 Tower Cranes (ASME) B30.3 Rigging Hardware (ASME) B30.26...

Millwright - Rigging and Hoisting Exam Questions With Verified Answers Graded A+ 1. Of a block and tackle with five rope falls and minimum friction, how much force is needed to retain 250lbs? a. 50 lbs b. 100 lbs c. 250 lbs d. 75 lbs a. 50 lbs 250lbs/5 = 50 lbs 2. What diameter rope is needed to support two tons using a vertical lift? a. ½" b. ¾" c. 1" d. ¼" a. ½" 3. What is the standard safety factor to consider for a platform supporting people? a. 1 : 1...

What is the safety factor for pendants or standing ropes? 3/1 for normal operations 2.5/1 for boom erection Safe working load (SWL) is ______ Rated Strength The effective weight of an erected extension would be higher or lower than its actual weight? Higher How much twist is allowed in a crane hook? None What is the horizontal distance a stand takes for one complete rotation around the ropes core? Rope lay or lay length What deficiencies are you looking for in pendants or standing rope...

Mobile Crane Questions Test 1 Questions and Answers | Latest Update | Graded A+ According to ANSI B30.23 personnel platform lifts should not be made with wind in excess of: 20 mph After the crane has been checked out before lifting a personnel basket, the crew should: Have a pre-lift meeting All hazards and potential problems should be discovered during the: Pre-lift site inspection. By order of hitch strength, which is the correct answer? Basket, vertical, choker. During ...

What are some hazards for mobile cranes excavations? - Vibrations from other equipment, previously excavated soils When do you consider the weight of the wire rope to be part of the load for deductions? - Multi part reeve when extra line is not necessary to make the pick You never take the weight of the wire rope on top of the boom as a deduction? - True What best describes a luffing jib? - Boom with a dedicated winch that acts independent of the main boom. Where does most boom damage come f...

What are some hazards for mobile cranes excavations? - Vibrations from other equipment, previously excavated soils When do you consider the weight of the wire rope to be part of the load for deductions? - Multi part reeve when extra line is not necessary to make the pick You never take the weight of the wire rope on top of the boom as a deduction? - True What best describes a luffing jib? - Boom with a dedicated winch that acts independent of the main boom. Where does most boom damage come f...

Rigging--with 100% correct answers 2024/2025Determine if this statement is true or false. The two types of wire rope center core designs are fiber core and independent wire rope core. - correct answer true Page 2 What is the percentage gain in strength using an IWRC versus a fiber core wire rope? - correct answer 7.5 Page 3 What characteristic increases in a wire rope by using a rope with more strands and more wires in the strands? - correct answer Flexibility Determine if this statemen...

Millwright's Formula's 2 Wire rope SWL ANSWER Rule of thumb. 3/8 " Dia. Is rated for 1 ton. Every 1/8" in Dia. Larger is 1 more ton. Basket hitch ANSWER Sling doubled to hook. SWL =SWL1 x (H/L) x 2 Choker hitch Over 450 ANSWER Sling choker through eye and back to hook. SWL = SWL1 x 3/4 Choker hitch Less than 450 ANSWER SWL = SWL1 x A/B Double basket hitch ANSWER SWL = SWL1 x H/L x 4 Woodruff keys ANSWER First # is x 1/32" for width. Second # is x 1/8" for Dia. E....