Rainwater and drainage

Stormwater and drainage pipes are used to drain excess water and to drain soil. Together, they form a system that helps to keep soil water levels at an optimum. Latis tubes are available in diameters from De110mm – De400mm.

Rainwater drainage in the building

The purpose of the building’s rainwater drainage system is to divert rainwater from the roof, so that it does not collect in puddles in the courtyard and endanger the foundation and basement. Rainwater is channelled through gutters and downpipes to rainwater collectors at ground level, from where it is channelled to stormwater pipes. The rainwater pipes used are smooth on the inside, waffled on the outside and not perforated.

The stormwater drainage system is kept separate from the building drainage system, as the drains, filled with floodwater, would push the water towards the foundation walls of the building and the piping would work in the opposite direction to what is needed.

Rainwater is discharged to a
downstream outlet (e.g. a ditch) or to a main well away from the house.

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Building foundations - railing

The purpose of the building foundation drainage is to collect excess water around the foundation and to keep groundwater at a safe depth. Latis pipes, which are smooth on the inside and waffled on the outside, are used for construction drainage pipes. The tubes are generally perforated 360°, but semi-circular tubes are also produced.

Drainage pipes shall be installed in a drainage trench, where they shall be surrounded by a layer of drainage gravel or aggregate at least 20 cm thick. The drainage ditch is surrounded by a filter fabric to isolate the draining material from the rest of the soil. Drainage inspection wells will be installed in the corners of the building to allow for later inspection and flushing of the pipework.

Drainage water is discharged to a downstream outlet (e.g. a ditch) or to a main well away from the house, where a non-return valve is installed on the drainage pipe to prevent it from returning to the drain in the event of flooding.

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Agricultural drainage

Agricultural drainage pipes, also known as coiled drainage pipes, are used to regulate soil water levels and drain wet areas. The tubes are available in 50m spools and are available with or without filter material. Geotextile, coconut and PP filters are used as cover materials. The choice of coating material depends on the type and properties of the soil used.

Rolled drainage pipes increase soil fertility, increase yields and improve accessibility. In addition to agricultural use, drainage pipes are also used to drain residential and recreational areas, making these areas more usable and accessible.

Roller drainage pipes are available in diameters De63mm – De160mm.

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