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© Easy Guides Australia The information in this show is for the following crane classes: Non-Slewing Mobile CranesDerrick CranesPortal Boom Cranes Tower.

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Presentation on theme: "© Easy Guides Australia The information in this show is for the following crane classes: Non-Slewing Mobile CranesDerrick CranesPortal Boom Cranes Tower."— Presentation transcript:

1 © Easy Guides Australia The information in this show is for the following crane classes: Non-Slewing Mobile CranesDerrick CranesPortal Boom Cranes Tower CranesVehicle Loading CranesBridge and Gantry Cranes Slewing Mobile Cranes

2 © Easy Guides Australia Question 2. Calculate the Working Load Limit (WLL) of one of the following: (1) 12mm diameter unidentified synthetic rope. (2) 15mm diameter unidentified synthetic rope. (3) 20mm diameter unidentified synthetic rope. Answer: 12mm = 12 x 12 = 144 kg WLL. Answer: 15mm = 15 x 15 = 225 kg WLL. Answer: 20mm = 20 x 20 = 400 kg WLL. Formula: D =WLL (kgs) Note: Where a manufacturers tag or specification is not supplied for a synthetic rope the formula for fibre rope should apply or be accepted.

3 © Easy Guides Australia Answer: Question 30. List two effects “double blocking” can have on the crane and equipment. Can cause the FSWR to break Can damage sheave Can cause the load to drop Can cause structural damage to the crane

4 © Easy Guides Australia Answer: Question 72. What details are displayed on a spreader / lifting beam? (List at least three). TARE – 250kg SWL 25t EGA-2005 Tare weight of the beam. Approval plate. SWL / WLL. Registration number.

5 © Easy Guides Australia Answer: 5,086 kg. Question 102. Find the total weight of a load made up of the following: 4 universal beams each 8 metre long; 15 scaffold planks each 4.4 metres long; 2 mild steel plates 4 metres long and 0.5 metres wide. One metre of universal beam weighs 125 kg One metre of scaffold plank weighs 7 kg One square metre of mild steel plate weighs 156 kg Workings: (4 x 8 x 125) + (15 x 4.4 x 7) + (2 x 4 x 0.5 x 156) = 5086kg


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