interesting calculator. I understood the formula for calculating fall factors as 'length of fall divided by length of rope out', which would make a 4ft fall (2ft above last bolt) on 20ft of rope a fall factor of 0.2, while the calculator says that a 4ft fall on 20ft of rope would be a fall factor of 1.1, with the same fall on 40ft & 60ft of rope would be fall factors of 1.05 & 1.03 respectively. either the calculated factors are way off or my formula's a little simplistic? |