PPR 39

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PPR 39

Project Production Work (PPR). External networks of water supply and sewerage. Off-site engineering networks of residential buildings with integrated premises

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Document * .doc; 57 pp .; The main guidelines for the work: 1.1 Lay pipelines in accordance with the instructions of the album of technological maps Organization and technology for the construction of water supply and sewage, developed by Lenorginzhstroy. 1.2 Lanying and storage of products in accordance with this PPR. 1.3. The walls of the trench in the places indicated by PPR shall be fastened with a wooden dowel. 1.4. Excavation with an excavator with a tank. bucket 0.5 m. The soil developed by excavators is partially stored in a dump, partially loaded into dump trucks and transported to a landfill. In places of future driveways, all the soil is loaded into dump trucks and transported to a landfill, the trench is filled with sand. 1.5 During the passage of the route along the buildings (residential buildings under construction), the trench is backfilled manually with a layer-by-level tamping of the backfill after 0.2 m. 1.6. Groundwater is pumped out from the trench by a pump through drain pipes to the nearest sewer well. 1.7. Installation of pipes is allowed to be carried out by an excavator equipped with a hook. In the area of ​​work with cramped conditions (near the house under construction), pipes, due to their lightness, can be laid manually using sling towels. Laying is done in separate pipes with their connection using electric welded couplings or welding. 1.8 Tram tracks in the work area are dismantled by a specialized organization. ";


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