Enjoy the resources! You will find the video and transcription of the webinar below. You may also download the presentation PDF. This webinar was originally recorded on May 31, 2016.
Host: John Bartlett, Instructor/Consultant, ITI
1. Hoist rope weight calculation. How do you calculate for this?
A. The hoist rope weight is calculated by finding the total length suspended from the boom point and multiplying that by the weight per foot. Some places you’ll find guidance to use boom length to determine wire rope length, this can be a simple method that works in some instances but not all, and of course it results in an over estimate. I give the following for a simple example of a straight forward approach, if the boom tip elevation is 100’ off the ground and reeved 4 parts the you could have 400’ of wire rope suspended from the boom tip if the block is close to the ground. Weights of wire rope vary depending on the size i.e. 3/4", 7/8”, 1”, 1-1/8”, etc. if the wire rope in the proceeding example weighed 2lbs. per. Foot and you were instructed by the crane manufacture to deduct all wire rope weight, and the 400’ reeved from the main boom point was the only wire rope deduction needed to be calculated, then the weight of the wire rope would be 800lbs.
2. Is the load chart serial number the same as the crane's serial number?
A. Yes, the load chart would bear the serial number of the crane to identify it to that exact crane.
