The ultimate manhole covers site
A special German standard of the German Institute for Standardization ( ) for square covers (sewage and the like) on roads that defines the requirements for covers in the C250 ( ) D400 ( ) load class. This standard defines the size, the materials and the weight in which the lid should withstand in order to the load.

The standard title is: Gully tops 500 × 500 for road gullies, class C 250 and class D 400

Download document from Beuth Verlag (payment)

An example of a cover that carries the standard on the "ultimate manhole covers" site. From this lid the picture that appears in the general section was taken.
There are 1 manhole covers in the site that has this standard
Click for all the covers with this standard

Click for the rest of the standards in the site

The ultimate manhole covers site

Initiating the site - Eli Zvuluny - Programming and building the site Possible Worlds Ltd. Possible Worlds Ltd. © 2017-2024

© ALL RIGHTS RESERVED - The site and its content are copyright protected. The full copyrights of the site's content belong to Eli Zvuluny. All images in the site (unless another photographer is mentioned) were taken by Eli Zvuluny that has the full copyrights on them. The use of any images or other materials included herein, in whole or part, for any purpose is expressly prohibited without the written permission of Eli Zvuluny. .