Please can anyone help me with the formulas/calculations to calculate required wrap/rope traction required for lift instalations.

-- Ian Rideout (siamoffs@loxinfo.co.th), July 23, 2004

Answers

Traction Calculations

Ian,

I am presuming that you are from the UK because you use the word 'lift' rather than 'elevator'. With this in mind you should consult Annex M of EN81-1 which will give you all the information you need regarding traction calculations. There is, however, an error in Annex M, and quite an important one. Details about the error can be found by following this link:

http://www.liftdirectory.com/technical/tech2000spring1.html

Annex M is only a recommendation however and many companies probably do things slighty differently (use differing values etc.) and so it should be treated as a guide only.

If you want a copy of Annex M then contact me directly.

Regards, Lee.

-- Lee Cooper (ljcooper.home@btinternet.com), July 24, 2004.

ian, off the subject a little but did you used to work for otis in bristol?

-- paul lacey (pielacey@hotmail.com), August 10, 2004.