La vida útil de 15 a 25 años.
Lo que no encontre el costo de mantenimiento:
Tile Drainage Inspection and Maintenance1/
You should inspect your tile drainage system regularly and conduct maintenance when required. Prompt repair of any drain failure will keep the system in working order and prevent permanent damage to the entire system.
1) Inspection – Subsurface drainage systems do not require extensive maintenance, but the maintenance that is required is extremely important. If subsurface drains are working, water will stand in the field for only a short time after a heavy rain. If water stands for a few days, the drain may be partly or completely blocked.
2) Cleaning outlet ditches – Many subsurface drainage systems fail because outlet ditches are blocked. If the outlet ditch is filled with sediment, a survey should be conducted to determine the extent of the cleanout work.
3) Cleaning surface inlets – Poorly constructed surface inlets are subject to severe damage and require frequent repair. Inlet covers often become sealed with trash and should be checked frequently. Clean the covers after a heavy rain and replace them carefully.
4) Repair blowouts – Holes that have developed over subsurface drains should be repaired at once. Otherwise, large amounts of soil may wash into the line and block the entire system.
5) Remove sediment – Sediment traps can be used for subsurface drains laid in fine sand or silty soils. If cleaned regularly, traps keep soil from filling the lines.
6) Protect drain outlets – Gullies commonly form at unprotected outlets of subsurface drains. Gullies may damage the field, silt up the drainage ditch and reduce the flow of water from the subsurface drain.
7) Control rodents – A flap gate or fixed pin guard can be used to prevent rodents and other small animals from entering and blocking outlets.
Control tree roots – Trees such as willow, elm, soft maple, cottonwood and other water-loving trees within approximately 100 feet of the drain should be removed. A clearance of 50 feet should be maintained from other species of trees.
9) Ochre accumulations in the drain – Ochre, which is an iron oxide, may block the drain when iron in solution moves from the soil to the drain and accumulates.http://www.extension.iastate.edu/agdm/wholefarm/html/c2-90.html