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Lap Specifications per Bar Diameter
Millimetres of Lap Related to Number of Bar Diameters
Bar Size Bar Diameter Number of Bar Diameters (Using Bar Size)
10 12 20 24 30 36 48 54
10M 11.3 100 120 200 240 300 360 480 540
15M 16 150 180 300 360 450 540 720 810
20M 19.5 200 240 400 480 600 720 960 1080
25M 25.2 250 300 500 600 750 900 1200 1350
30M 29.9 300 360 600 720 900 1080 1440 1620
35M 35.7 350 420 700 840 1050 1260 1680 1890
45M 43.7 Lap Not Permitted
55M 56.4 Lap Not Permitted
Source

RSIC / IAAC Standards Practice Manual New edition coming soon


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