Building A Deck Over A Drain Field

Building a deck over a septic tank it is usually not a good idea to build a deck near or on top of a septic tank.

Building a deck over a drain field.

With structures such as decks. Because of the moisture levels and the need for free air movement no permanent structures. If you have a deck or patio with no access to the tank you may have to rip out the structure wasting all the money spent to build it. Building near a drain field leach field if a drain field is damaged it can cost a lot more to replace.

Building over field lines. Can you build a deck over a septic field. Building a permanent structure over the tank or drain field is usually a bad idea. Usually decks are allowed over drainfields as long as the piers of the deck are at least two feet from the drainfield trenches and as long as the deck footings do not support a roof.

If you have a septic system and want to add a deck to your house or build a shed in your backyard you should consider the consequences carefully. Also the soil can compact around the trenches which may not allow for percolation. If constructing over field lines it is imperative that no foundation is dug. Most zoning ordinances will require that you maintain at least a 5 setback from an underground septic system.

You may run into expensive problems a few years down the road. Here are three things to know in advance. The biggest issue that can arise from construction near a drain field is the damage caused by heavy construction equipment.