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The PDF files may also be printed but diagrams will not appear as sharp as in the classrom version. A bound printed copy - the classroom version - will be supplied during any course in which you enrol, or assessment for which you register. The Assessment Instruments present course content in two or three parts. The reason for the resolution/ quality of presentation for the PDF files being downgraded is for quicker transmission. |
Course Outline SA Scaffolding Advanced COURSE IN ADVANCED SCAFFOLDING Applications Apply directly to Neil Francis, Worksafe Training Centre on 1800 064 966 or by email to: enquiries@worksafetraining.com.au. Task 1: Calculating Rope Tension Electrically Powered Hoist Hoist SWL X 1.25 + Rope Dead Load Rope Tension = (750kg X 1.25) + (36 ÷ 2) = 955.5 kg Manually Operated Hoist Rope Dead Load/2 +Hoist Dead Load + Cradle Dead Load + Working Load Limit of Cradle. eg. Rope Tension = (26kg +2) + 35kg + 75kg + 200kg = 323 kg Rope Tension Task 2: Calculating Minimum Breaking Load Safety factor for a suspension rope is 10 for Powered Hoist and 7 for Manual Hoist Breaking Load = 750kg X 10 = 7,500 kg. (Powered Hoist) Breaking Load = 350 kg X 7 = 2450 kg. (Manual Hoist) Task 3: Formula for Number of Counter Weights No of C/W = 3 X Rope Tension (in kg) X Outboard (in mm) divided by Inboard (in mm) divided by mass in Counterweight. Calculator = Rope Tension X Outboard/Inboard/Counterweight = Counterweights. 2 X 955.50 X 100 ÷ 5500 ÷ 25 = 20.85 or 21 X 25kg Counterweights. OR A X B ÷ C X 3 = CW divide by 25 = Number of Counterweights A = Outboard Load (Rope Tension in kg) B = Outboard Distance (in mm) C = Inboard Distance (in mm) CW = Counter Weight 3 = Safety Factor (Ratio of Stability) Counter weight = 25 kg. |
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