Main Rope diameter measurement have been carried out for all elevators. The measurement of the
ropes would be conducted in 3 position which is top, middle and bottom of the total rope length along
the shaft. The average decreasing in diameter of the rope will be used to consider their condition for
further judgement. Venire caliper is used as an instrument to measure rope diameter.
This particularly rope diameter is 13mm and the acceptable torelance is not over than 7%
decreasing in rope diameter as per KONE standard.
Visual Check main rope Wire breaks the acceptable tolerance is not over than
number of broken wires per lay length in worst 4 point in one strand or 10 point in whole rope