SYTEC linear drainage systems

Load classes as per PN-EN 1433 standard
Terrain slope - possibility of drainage
Flow capacity
Advantages of polymer concrete linear drainage systems
Division of SYTEC drainage systems
System Installation in various types of surface

Increasing attention is paid to quick cost effective surface drainage and to designing systems that subjected to large hydraulic and operational loads.

Climatic disasters are becoming increasingly more frequent and intense than before. This is connected with the global warming, which results in more frequent and intense extreme atmospheric conditions such as floods, storms, hurricanes etc. The weather events have becoming increasingly more variable, rapid and extreme, very intense precipitations overload the old drainage systems or, in case there are no such systems, lead to widespread puddles, floodplains, floods. Industrial development has contributed to radical change of urban areas' drainage basins and their nature. Vast terrains of our urban environment have been cemented, it means that they have been sealed, this in turn disturb such natural processes as water penetration and evaporation.

The linear drainage systems, based on troughs and channels made of such modern material as polymer concrete perform well in case of large and sudden hydraulic loads.

It is already a well known fact that flooded surface slows down, impedes, or completely blocks movement of pedestrians and vehicles, moreover a slippery and wet surface are a cause of tragic accidents, therefore drainage is an important factor in general construction issues. On average, there are between 120 and 150 rainy days in Poland per year, therefore, nowadays, no one need to be convinced os the importance of properly selected, designed and manufactured drainage system. Not only does it come with technical and financial benefits, but it is also a basis of taking guaranteeing safety to road users.

The consequence of wrong selection or a lack of drainage systems is floods and rain waters flowing down, in streams, in uncontrolled manner, damaging the surface and causing such typical damages as: cracks, convexities, fractures, ruts, sunken carriageways or roads.

SYTEC product offer guarantees appropriate selection of drainage systems, depending on the topography and substrate type. Their usage function and strength enable us to professionally drain with any type of load class and application. At the product design stage, we paid particular attention to the fundamental issues on linear drainage systems, that means the loads that the systems would be subjected and the chemical substances expected to come into contact with the systems during exploitation. We are pleased to present you with the fruits of our design efforts and long-term experience reflected in the SYTEC products.

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Load classes as per PN-EN 1433 standard

Table of load classes according to PN-EN 1433:2005 standard
LOAD		EXAMPLE OF EMPLOYMENT OF SYTEC CHANNELS
15 kN	1,5 T	Pedestrian and bicycle paths, green areas, such as parks, green squares, areas near houses
125 kN	12,5 T	Areas of increased pedestrian movement, car park areas for personal cars, garages
250 kN	25,0 T	Areas near street kerbs, pavements, roadsides, traffic of light trucks, vans
400 kN	40,0 T	Carriageways, heavy traffic routes, car park squares, including for trucks
600 kN	60,0 T	Industrial areas with heavy traffic and heavy loads
900 kN	90,0 T	Special surfaces: airport areas, including runways, taxiways and parking lots for passenger and cargo planes

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Terrain slope - possibility of drainage

Depending on the shape of the terrain we intend to drain, we may adopt the type of drainage system in 4 possible ways. Available slopes of a draining trough bottom enables the design of a system and facilitates the drainage of essentially all types of terrains.

NATURAL SLOPE:

In all areas with a natural terrain slope and if the inclination is greater enough (min. 0.5%), we use slopeless drainage troughs for draining.

LINEAR SLOPE:

For the terrains with no natural slope. The drainage channels are provided with a shaped bottom inclined at the angle of 0.5% or 0.6%. The length of the whole run having constant inclination is 20m. The terrain drainage system is made of the runs with the length ranging up to 20m, which very quickly and effectively drains the required area.

CASCADE SLOPE:

For the terrains with no natural slope, drainage channels are provided with a cascade slope system. It consist of series of flat drainage channels of varying heights, interconnected, by means of a cascade connecting unit, at the place of a "step, cascade". This system also guarantees quick and effective drainage of large areas.

COMBINED SYSTEM (a system with a cascade slope and a linear slope):

For the terrains with no natural slope, the drainage channels are arranged as follows: a series of flat channels, interconnected by means of a linear system having a sloped bottom - this series, in this case, fulfils the function of cascade connecting unit. Due to such solution it is possible to make very long runs. Such a combined solution may be ended, for instance, with a cascade slope run and the channels of various heights which additionally elongate the series thus enabling effective drainage of water and impurities to a catch basin. It is also possible to combine flat linear systems, linear systems provided with sloped bottom and linear systems with cascade slope.

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Flow capacity

Legenda:
Q - drainage quantity
F - drainage basin area [m²]
q - design rainfall intensity [l/(s x ha)]
φ - drainage rate [ - ]
l - channel length [m]

The flow capacity for a channel with 10 cm internal width (for regular drainage basins):

The flow capacity for a channel with 15 cm internal width (for irregular drainage basins):

The flow capacity for a channel with 20 cm internal width (for irregular drainage basins):

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Advantages of polymer concrete linear drainage systems

because of their non (moisture) absorbing property, the materials from which drainage channels are manufactured are frost resistant,
the drainage system does not allow any substances through, it is leakproof, it is used to seal contact surfaces, it prevents fluids from leaking to the underground waters - it is extremely effective if we intend to pay much attention to environmental issues,
the drainage system excellently drains corrosive chemical substances, including acids and bases,
the material used for channels is resistant to scratches, does not peel off, does not splinter, does not require any maintenance - hence minimizes the costs of system exploitation,
the material used for channels is durable and strong, its mechanical resistance to loads is greater than in case of concrete of the same cross-sectional area,
due to their strength, the products made of polymer concrete have smaller cross-sectional area for equivalent load classes, therefore, their weight is reduced which resulting in easier and quicker installation, no need of heavy equipment,
high flow capacity, obtained due to very smooth internal surfaces, facilitates quick drainage of water including impurities, resulting in so called self cleaning effect - this reduces the service costs of the drainage system,
due to removable gratings it is possible to easily clean the channel interior or, if there is a need, replace a damaged grating,
due to wide range of SYTEC products, we may use drainage systems for any application, substrate and finishing surface,
it is possible to choose from 4 types of polymer concrete channel finishing: galvanised steel, stainless steel, cast iron and polymer concrete grating,
easy access to the trash bucket in case of catch basins.

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Division of the SYTEC drainage systems

SYTEC linear drainage systems, lightweight type - CS
SYTEC technical linear drainage systems with steel edge - SE/SSE
SYTEC technical linear drainage systems with cast iron edge and cast iron grating - CE
SYTEC technical linear drainage systems with POLYMER CONCRETE grating - DM
SYTEC kerb drainage systems
SYTEC tunnel drainage systems
SYTEC polymer concrete covers of street inlets

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