FAQ 002506 EN 25 February 2019

Markus Baumgärtel Stand-Alone Programs CRANEWAY

The crane runway has at the beginning and end small cantilever beams, so that the wheels go to the support. In these areas, the deformations show impermissible values. What should I do?


According to current recommendations, the proof of deformation for a cantilevered crane runway girder with the formulas

$ \ Mathrm {Az} \ \ leq \; (2 \; \ times \ l _ {\ mathrm {cantilever}}) \ / \ \ mathrm {zul} \;. \ Mathrm {} $ deformation


$ \ Mathrm {Az} \; \ leq \;. \ Mathrm {perm} \; \ max \;. \ Mathrm {} $ deformation

guided. It can not be distinguished by the program, whether the proof for the examined crane runway carrier is meaningless or not. This decision must be made by the engineer.

Usually a simple reference in the static is sufficient for the examiner. Alternatively one could consider whether such a support is at all relevant for the design of the entire crane runway girder and neglect it when entering the geometry if necessary.

In a webinar on the topic " Design of crane runways according to Eurocode 3 " you will find more information about the evidence with KRANBAHN. You can find it below at the links .


Kragarm Krahnbahnträger Deformation cantilever Deformation analysis Permissible deformation Crane track carrier


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Stand-Alone Steel Structures

Stand-Alone Program

Design of crane runway girders according to EN 1993-6 and DIN 4132

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