The staggered manhole access

The access of econorm-manhole was enlarged about 25 %. This arrangement allows more freedom of motion during inspection and maintenance works. In BaGUV is found paragraph 5.13 with following statement:

The inner diameter of accesses have to be minimum 0,8 m. Depart from that accesses which are in the traffic area of vehicles may have an inner diameter of 0,6 m.

BaGU prescription of January 1997, Order no. GUV 7.4 N

The instructions of employer's liability insurance association have to be kept under all circumstances. The econorm cone fulfils all the requirements of Standard V-4034-1.