SearchAsk us anythingarrow rightHow deep are septic leach lines buried?A typical drainfield trench is 18 to 30 inches in depth, with a maximum soil cover over the disposal field of 36 inches.Let's Get It Fixed!Our virtual experts can diagnose your issue (for free!) and resolve simple problems.Chat with a live expertChat nowCall 1 (855) 466-3948Call nowRATESHARECopy linkTwitterFacebookmagnifying glassLink copied to clipboard.SUBMIT AN ANSWERShop Recommended ProductsShop HomeX Recommended ProductsRELATED QUESTIONSHow deep are storm drains?Minimum cover from the top of the pipe to finish grade at the storm drain alignment is required. Minimum cover for most types of pipe should be 24 inches above the ground in paved areas and 30 inches at other locations.How deep does a gas pipe need to be buried?The minimum depth of cover for a gas main should be 750mm in a road or verge and 600mm in a footpath. A gas service pipe should be laid in private ground with a minimum depth of 450mm.How much drop does a septic line need?The "building sewer" must be sloped between one inch and one inch for every 8 feet of sewer line and not more than one inch for every 4 feet, in other words the pipe must drop at least one inch for every 8 feet. The flow is not fast enough to clear the pipe.How deep do you dig a soakaway?The rule of thumb is 1 square meter of soakaway for a 30 square meter roof. You typically dig 1.3m deep and 1m x 1m below the pipe invert.How deep are gas lines buried Alberta?There are 24 inches under driveways and parking areas and 15 inches under non traffic areas. The gas line will be burned with a constant compression wire from Riser to Riser. There are 36 inches under driveways and parking areas and 24 inches under non traffic areas.How deep are septic lateral lines buried?A typical drainfield trench is 18 to 30 inches in depth, with a maximum soil cover over the disposal field of 36 inches.