Load compensation LS
The current technical rules and regulations [DIN V 4034-1] places the following requirements on manholes made from concrete, steel fibre concrete and prefabricated concrete for wastewater pipes and ducts. "The manufacturer of such load distribution elements, which may also be linked to the sealant provided, must provide evidence of safe, non-resilient transfer of all vertical loads by means of a tested static calculation of the overall structure for each type of construction; this must be approved by a recognised test center by means of appropriate load tests. The requirements of road-based load carriers/other users are to be complied with."
The M.O.L. load-balancing ring (used for concrete manholes) complies with these requirements. It is a 2-chamber element filled with quartz sand which is used to compensate for unevenness of the concrete manhole rings. It also meets the requirements of DIN V 4034-1 concerning the even, non-resilient transfer of loads as a substitute for a mortar joint and thus ensures safe balancing of peak loads between the concrete manholes. M.O.L. load compensation rings (LS) are delivered individually but can only be used in conjunction with a suitable manhole seal, such as MSD, MSD-V or INTEGRA S since the M.O.L. load compensation ring (LS) is not a sealing element.
Notice on laying within manholes
If the supplied seal is not already integrated into the sleeve, the seal must first be pulled over the tip end. Distribute the prestress evenly and ensure the seal is properly positioned. Loosely place the M.O.L. load compensation on the outer tip end mirror as centrally as possible prior to connecting the concrete manhole rings. If the seal is not self-lubricating, liberally apply a suitable lubricant (e.g. from M.O.L.) to the tip end and seal. Place the concrete manhole ring centrally and press down if required.