Crane Hook Approach

Try these-

http://www.pdhonline.org/courses/m245/m245content.pdf

Hook approaches - Maximum hook approach is the distance from the wall to the nearest possible

position of the hook. The smaller the distance is, the better can the floor area be utilized. Always

check which crane gives optimum hook approaches and when combined with the true lift of the hoist

you can utilize most of the available floor space. This is also termed as side hook approach.

Double Girder specific Link-

http://www.bhardwajeotcranes.com/search.html?ss=hook+approach

It is not by formula, other than addition/subtraction of relevant dimensions, which depends on the manufacturer.

Thanks to all for the reply.

There is no formula for calculating hook approach of the crane. It depends on the design of crane by the crane mfr. It is measured as distance from the center line of the gantry rail (long travel rail) to center line of the hook when it has reached extreme end of the cross travel.