Pipe installation
Pipe installation must be carried out by qualified workers under professional supervision.When installing the pipe, it is necessary to follow the general guidelines for laying pipelines that are laid in the ground and are roughly defined in the standard SIST EN 1610. Special requirements for the installation of PVC TK pipes for protection of telecommunications cables are defined in the Instructions for construction of PVC ducts (PTT VESTNIK No. 6 – 1973).
Installation procedure
With proper preparation of the bed (thickness 15 cm) with sand or other soil that can be hardened and not containing stones (grains up to 20 mm), good and gradual hardening of the backfill (degree of compaction according to Proctor Dpr> 95%) next to the pipe and 30 cm above the top of the pipe, it is achieved that pipes covered with earth from 0.8 m to 8 m do not deform above the permissible limit of 6% even under the heaviest traffic load SLW 60 (according to DIN 1072). If the pipe overlap is less than 0.8 m, it is necessary to take care of load distribution (by concreting).
When laying in a multi-layer pipe trench, it is recommended that the pipes be fixed with spacers, and it must be ensured that each layer of pipe is separately backfilled and hardened before the next layer is laid on it.
More detailed installation instructions can be found in the “Downloads” category, where, in addition to catalogs, you will find guidelines for laying pipelines, which deal with excavation of the trench, construction of the bed, covering and main backfilling of the pipeline. General guidelines for testing the tightness of laid pipelines in accordance with SIST EN 1610 are also available.