Perimeter foundation drainage

Organization of houses adjoining drainage

structure adjoining the drying communication

drainage system is urgently required in the presence of a ground floor or basement.The optimal time for the design of wall drainage, is the stage at which the tab is intended for excavation of the foundation, that is the initial stage of construction.

In the case of the already built houses, with missing near-wall drainage system need only additional monetary costs as well as time and cost of its own forces, to ensure the necessary protection of the structure from rain and groundwater.The first thing you need to do is re-dig a trench around a structure.

drain pipe will encircle the perimeter structure.Drains, drainage pipes as they provide for in their places of switching manholes.Most often installed on the building corners.At the point of the lowest level in relation to the whole system is organized bilge wells, which performs the function of pumping excess water into the nearest body of water or rain sewerage system outside of this area.

To create an additional protective layer, made of clay, called a clay castle, fit into the 0.5 - 1 meter away from the foundation.This layer will create an additional layer of protection against the ingress of rain water and ground water to the building foundation.

adjoining drain - a system of several different types of drainage systems:

• Reservoir drainage.Its installation is carried out at the level of the sand cushion directly below the level of the foundation slab.It consists of perforated drains well - receiver and pump down the well.Drainage pipes filled with sand and gravel, which drains the excess water level.
• Linear drainage.It consists of PVC segments that are equipped with grates to protect against debris.Equip the entire length of the blind area.

Calculation of wall drainage

system design some components need to be considered for the calculation of the drainage system.

• Depth of laying the foundation.Bookmark drainage system should be placed on the 30 ... 50 centimeters deep foundation base cushion.
• Slope, which provides a gradual deepening of the drainage system to a collection manifold.In order that the water does not stagnate in the pipe drainage system and ensure uninterrupted drainage, it is necessary collector slope of at least 2 centimeters per meter.

To simplify the work necessary to calculate the drainage point, the upper and lower points.For the upper point of the drainage system, taking the angle of the house, the base of the foundation, the bottom - discharge well, which fall into the waste water.

Consider the visual performance of the near-wall drainage calculations.

input parameters: The width of the building is 8 meters, length 12 meters, the distance from the structure of the well is 15 meters.Calculations: Calculate the length of the area around the house - 8 m + 12 m = 20 m, add the distance to the well and get 35 meters of total length to the drainage wells.Conclusion: The necessary slope of the system will be 70 centimeters, at the rate of 2 centimeters per meter of the overall length of the drainage system.

Installation of wall drainage system

Mount adjoining bilge communication with their hands in the cellar, so divide the work into separate stages:

1. By building a sand pillow to accurately vymeryat vertical drop.If possible, carry out these operations lasers.It is necessary to form a uniform slope.
2. next stage, you need to place a geotextile fabric and fill it, pre-washed gravel.It should, at the same time mindful of uniform slope.
3. laying pipe perforated with holes of PVC, which will not exceed the size of the smallest gravel to remove possible blockages.
4. makes installation of elements of the drainage pipe to each other.It is necessary to check the level of slope 2 cm per meter of pipe.
5. necessary to provide the presence of vertical pipes in the "rotary units", which will be a tight lid.This is done to simplify the system of the washing process.

1. pipeline covering layer of pure gravel thickness 15 - 20 cm and hiding geotextile gravel bed.This manipulation is conducted lapped to remove the possibility of ground contact with soil formed cracks.
2. poured on top of the sand to provide additional filtering.
3. extreme step, a remaining capacity of the soil to fall asleep.

Thus organization houses adjoining the drainage has been considered.If periodic maintenance work, this communication near-wall drainage will show the proper operation for several decades.