Building A Septic Drain Field

Plan for the flow to go downhill from here as this is exactly what a gravity fed system is all about.

Building a septic drain field.

10 metres from any watercourse. 15 metres from any building. Where to lay a drainage field. When installing a septic tank soakaway it s important to refer to building regulations part h to ensure the installation meets the required standards though we have summarised the points below.

Excavate to at least 2 feet deep and drill a hole through the wall or go deeper and go under the footing whichever is desired or necessary. Building near a drain field leach field if a drain field is damaged it can cost a lot more to replace. 50 metres from any water supply. For some people you might be able to find your septic tank field lines using satellites.

Each drain field trench should be at least 3 to 4 feet wide and 3 to 4 feet deep. Once the entire pipe is in place fill the trench with another one to three inches of gravel and let the gravel work its way down around the pipe. Use the clamps to hold the pipe in place at the septic tank drain so it does not shift and misalign. Building gardens or field flowers over the top of a leach field will result in clogging the tiny perforations in the pipes.

Step 7 add more gravel. Oftentimes a drain field has clean outs at the beginning and end of the field. If constructing over field lines it is imperative that no foundation is dug. With structures such as decks no footings should be dug as footings could clog or damage the field lines.

In place of footings the structure should rest on shallow slabs or concrete plates. The trenches should be at a slight downward slant of no more than 1 4 inch per 8 feet of pipe. Grass that is kept short is ok because will take much longer to clog pipes but any type of plant where its roots can cause damage is not a good idea. The biggest issue that can arise from construction near a drain field is the damage caused by heavy construction equipment.

For example when we look at our home on google maps satellite view we ll see a clear indication of where our drain field is. How to install your own septic system daniel woodellduring construction of our new house i decided to install my own septic system. The weight of many large trucks driving over a drain field will crack the pipes in the drain field and compact the soils. This can be accomplished by making four trenches 25 feet long or two trenches 50 feet long.

Place the pipe from the septic tank all along each trench. Find where you want to go into the building relative to where you want to place the septic tank.