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Find out how to lay basic supply lines correctly and avoid mistakes! In this video, I show you step by step how to prepare the trenches, lay the pipes and carry out leak tests. Particular care and specialist knowledge are therefore required. We have the former, and we have tried to gather the latter as best we can. But see for yourself... Chapter overview: 00:00 - Intro 02:25 - Measuring the connections 08:23 - Slope of the trenches 10:25 - Obtaining pipes 13:46 - Material for filling the trench with sand 14:20 - Preparing the trench bottom 18:54 - Laying pipes 43:16 - Cutting pipes 46:23 - Filling the pipes with sand 47:50 - Leak test - failed! 49:06 - Fixing a leak 52:09 - Leak test number two... 53:28 - Compaction under the pipes 55:06 - Leak test passed! 56:46 - KG or KG2000? 59:25 - Ventilation pipes 1:14:52 - Grounding tape 1:20:25 - Closing trenches 1:29:20 - Conclusion *Subscribe to our channel* for more tips and instructions on building a house. Share your experiences in the comments and let us know if you have any questions! **Tags**: #Housebuilding #Basic supply lines #Pipe laying #Leak test #Construction planning #Do it yourself #DIY #Plumbing installation #Step by step instructions