Geberit storm sewer how it works. TTK. Installation of a siphon system for internal drainage GEBERIT PLUVIA. Geberit Pluvia - Intelligent internal drainage system

At present, the removal of rain and melt water from the roofs of buildings is carried out by unorganized discharge along the cornice overhangs and organized water drainage through external and internal drains. Internal drainage systems consist of drain (receiving) funnels, risers, outlet (suspended and underground) pipelines and outlets. According to the principle of action internal systems are divided into gravity and siphon systems.

In gravity systems, water is collected by drain funnels and discharged from the roofs due to the slope in the outlet pipelines. The calculation of pipelines is based on their partial filling.

In siphon systems of internal drain Pluvia Swiss companies Geberit the pipeline system is completely filled with water. There is a continuous water column from the funnel on the roof to the transition to the traditional gravity sewer system. Rainwater accumulates on the roof surface up to a certain level. Due to the pressure of the backing water, the water column is forced through the collecting pipeline. When the water column begins to fall in the vertical riser, a reduced pressure is formed in the entire drainage system, due to which rainwater from the roof is sucked into the pipeline system.

Air should not enter the siphon storm drain system to maintain full pipeline filling and siphon effect. This is achieved through tightness and precise sizing of the pipeline system. Special Design sinkholes Pluvia and complete tightness of the joints prevent the penetration of air into the system. The funnels are equipped with a flow stabilizer that allows rain water only on the side and without air inclusions. Used for drainage pipes welded piping system Geberit HDPE .

Pipes and fittings Geberit HDPE are connected by butt welding (in hard-to-reach places- electrofusion couplings) and are mounted using special fasteners and a large number anchor supports without installation of temperature compensators. Thus, the drainage system becomes completely sealed.

In light rain, the systemGeberit Pluvia operates in a similar way to a traditional gravity drainage system - the piping system is only partially filled with rainwater (partial filling). At heavy rain the traditional gravity-fed internal drainage system continues to be partially filled, while siphon system Geberit Pluvia completely filled with water due to the smaller diameter of the pipes (full filling). Due to this, a suction effect is created and the performance of the system increases dramatically.

Due to the high performance of the siphon storm drain systemGeberit Pluvia large areas roofs can be drained by a small number of risers, which simplifies design, reduces costs and duration of construction work.

Gravity system (light rain)

Gravity system (heavy rain)

System Geberit Pluvia (light rain)

System Geberit Pluvia (heavy rain)

How the system works Pluvia gives rise to its advantages over traditional system:

reducing the diameter of pipes and the number of funnels;

lack of slope of horizontal sections of the drain and pipes at the base of the building.

Due to the high water velocity, self-cleaning of pipelines is ensured. A special flow regime within the system allows you to optimize external networks and transfer releases to the desired side. Usage pipes Geberit HDPE give the opportunity pre-assembly system nodes.

Geberit Pluvia system can be used in various roofs: cold, warm, roofs with landscaping, etc. This system is most effective for large flat roofs and folded roofs with internal gutters. For both types of roofs there are various options versions, for example: uninsulated (non-insulated roof), insulated (insulated roof), insulated with vapor barrier, suitable for movement of people and Vehicle, with landscaping.

The system is calculated using special program developed by the company Geberit- ProPlanner Pluvia . The program allows you to automatically calculate the diameters of all pipelines so that water from all sections of the roof, even those located at different levels, is discharged simultaneously without air leakage through the funnels. The program also performs the hydraulic calculation of the system. The calculation results are given in tabular form and in the form of isometric drawings of risers. Program ProPlanner draws up a complete specification of materials required for installation.

The size of the system depends on the intensity of precipitation, the dimensions of the surface and roof structure and the piping layout. When designing, it is necessary to check the roof, covering slabs for additionalrainwater backwater loads. This is especially true for light roofs.

When placing funnel Pluvia the following regulations :

Distribute the funnels as rationally as possible, evenly:

Stir the funnels at the lowest point of the roof surface;

The maximum distance between two funnels on one drainage branch should not exceed 20 m;

to prevent malfunctions of the funnels, they should be placed at a distance of at least 1 m from walls, parapets, etc.

Extraneous wastewater must not be directed into the systemGeberit Pluvia . Roof sections should be drained separately if there are different rainfall intensities, if the area is larger than 5000 m2 and/or if the height difference is more than 4 m.

Maximum value reduced pressure in the pipeline system for pipes Geberit HDPE is:

With diameters from 40 to 160 mm - 800 mbar;

With diameters from 200 to 315 mm - 450 mbar;

With diameters from 200 mm to 315 mm (pipes P N 4) - 800 mbar.

Funnels Pluvia for draining rainwater from the roof can be directly connected to the piping system with a drain90 0 . All subsequent changes of direction to 90 0 in the pipeline system Pluvia only allowed with two outlets 45 0 .

AT in the case of non-insulated roofs and above all in the case of protruding eaves, frost protection measures are required, t. k. some areas pipelines may freeze. In such cases, the zone funnels as well as gutters must be protected with a self-regulating cable that de-energizes the heating ( heated funnels is in the assortment of the companyGeberit ).

With a temperature difference between the drain, the roof surface and environment on the pipe Geberit Pluvia condensation may form. To prevent this, the system piping should be provided with anti-condensation insulation.

Due to the high flow velocity in the pipeline, the noise level during operation of the system Geberit Pluvia higher than with a traditional gravity-flow internal drainage system. In buildings without special sound insulation requirements, the system Geberit Pluvia can be used without additional measures. In buildings with high requirements for sound insulation, noise-optimized piping is achieved by preventing sound transmission to the building structure (sound separation) and optimal placement funnel and pipelines. To prevent the spread of noise through the air, pipelines are laid in special soundproofed assembly channels and / or produce external sound insulation with trumpet toy or roll insulation.

Geberit Pluvia ends either in the vertical or horizontal sections. Further pipeline with full filling ( Geberit Pluvia) goes into non-pressuregravity system with partial filling (traditional gravity drainage system). To create such a transition, it is necessary to provide for an increase in the diameter of the pipeline.

Coefficient of linear thermal expansion a forGeberit HDPE is 0.2 mm/(m °C). Temperature difference? T = 50 0 C causes in caseGeberit HDPE linear expansion of the order of 10 mm per 1 m of the pipeline. Temperature difference? T= -30 0 C causes a linear shrinkage of about 6 mm per 1 m of the pipeline.

The change in the length of the pipeline system caused by temperatures must be controlled by fixing the pipeline using fixed and movable supports. Fixed supports counteract the forces from temperature changes and thereby regulate the longitudinal elongation of the pipeline in a certain direction. Movable supports prevent lateral deflection of the pipeline due to temperature changes and bear the weight of the pipeline filled with water.

System Geberit Pluvia attached as follows:

Horizontal mounting - using the system mounts Pluvia ;

Vertical fastening - using compensatory couplings;

Horizontal and vertical mount- by hard mounting.

For installation of horizontal sections of pipelines of the siphon system storm drain Geberit Pluvia system has been specially designed pipeline fasteners Geberit PluviaFix . The forces caused by temperature changes in the pipes are transferred to the anchor supports and further to the steel square profile(tire), which compensates for the resulting mechanical loads. Mounting system Geberit PluviaFix guarantees quick installation, fewer attachment points to the roof, the possibility of pre-assembly of individual units.

Internal drainage system Geberit Pluvia

A - suspension (threaded stud M10);

F - fixed support;

G - movable support;

AA - distance between suspensions;

RA - distance between brackets;

FA - distance between fixed supports;

FG is the weight of the fully filled suspension system.

Distance between brackets for mounting system Geberit Pluvia

A wise man learns not only from own experience, but also on someone else's. The peculiarities of acquiring life experience were explained by the Russian poet A. S. Pushkin and the English writer Oscar Wilde. According to the first: "... experience, the son of difficult mistakes ...". Oscar Wilde confirmed that “…experience is the name we give to our past mistakes…”. Talking about the experience of working with Geberit products, I would like to note that experience is formed not only on mistakes, but also on successes.

Storm systems Geberit are widely used in the construction of large warehouse complexes offering full set warehousing services. It is not uncommon for warehouse facilities up to half a kilometer long and with total area in 500 thousand m2. For such objects, the most economical is the use of flat roofs. The organization of drainage from such roofs becomes complex and responsible. engineering challenge, and often gravity storm sewer piping is an impossible or expensive solution. In these conditions good option is the use of Geberit Pluvia siphon-vacuum water drainage systems.

The principle of operation and the high capacity of this gutter system allow it to be used in a wide variety of applications: flat roofs, domed and arched roofs of various curvatures, inverted and green roofs - both with extensive and intensive landscaping. Geberit Pluvia is used particularly effectively in projects such as factories, warehouses, shopping centers, airports, hotels, sports centers, etc.

The advantages of the Geberit Pluvia siphon system compared to a traditional gravity system are as follows: reduction in the number of funnels, risers and pipelines; reducing the diameter of pipes and the building volume of the system; the absence of a slope of horizontal pipelines, which on large roofs can reach several meters; lack of pipelines at the base of the building; reduction in the number of releases to external networks; high self-cleaning ability of the system; optimization of external networks by transferring releases to one side; the possibility of prefabrication of system components.

The Geberit Pluvia siphon system consists of specially designed rain outlets, piping and a fastening system. The funnels of the siphon system provide effective collection of water from the roof, preventing air from entering the system. The Geberit Pluvia fastening system facilitates the assembly and installation of pipelines, prevents pipe deformation from thermal and dynamic influences. All funnels can be equipped with a heating element to protect against freezing during the transitional season (spring and autumn). The unique design of the Geberit Pluvia outlets provides flexibility in the possible design solutions and speed up installation.

For the calculation of siphon stormwater systems, Geberit has created its own calculation methods and computer program Geberit Proplaner. The hydraulic calculation of a siphon stormwater system is aimed at determining the diameters of pipelines that provide the closest match between the available pressure and pressure losses (local and linear) in individual sections.

Geberit specialists systematically monitor and systematize the experience of designing, building and operating Pluvia stormwater siphon systems. As a result of this work, the most typical mistakes and their reasons. Let's bring short list individual errors and groups of erroneous actions.

Mistake #1

This is an item selection error. For example, the equipment of funnels does not correspond to the type of roofing material and roof structure. Sometimes changes are made to the design of the stormwater system. Often this happens because the design did not take into account all the features of the project. As a result, installers are forced to order additional "correct" components. Installers sometimes try to put non-standard components on funnels on their own. Sometimes solutions try to find right on construction site, using improvised means and a large amount of sealant and with an unpredictable result.

Mistake #2

There may be a mistake in choosing the fastening of pipelines for the storm drain system: it happens that this choice is made without taking into account the features of building structures. So, the absence of the necessary fixed supports can lead to increased vibrations of pipes, their swaying. In the absence of compensatory couplings on vertical risers (with the so-called "hard installation"), large forces arise in the pipeline due to temperature changes, it is necessary to install pipe clamps on studs of large diameters - from 1/2ʺ to 2ʺ. Clamps and studs of this size are extremely difficult to find on sale. In addition, the force at the attachment points of such supports is very significant. And not all building construction can perceive them. The absence or incorrect installation of supports can also cause deformation of pipelines.

Mistake #3

It consists of combining in one system roof outlets installed on roof sections with a height difference of more than 4 m. This may be due to attempts to simplify the system and reduce its cost. Features of the hydraulic regime inside the siphon system can result in the outflow of water through the funnels on the lower sections of the roof.

Mistake #4

Connection to one riser of roof sections with a total area of ​​​​more than 5000 m2. This is due to attempts to simplify the system. This limitation makes it possible to reduce the diameters of pipelines, simplify their installation and operation.

Mistake #5

Errors in determining the estimated flow of rainwater. The reasons for this kind of erroneous actions are different: inaccuracies in the calculation of the catchment area for complex roofs, selecting the wrong rain intensity, etc. As a result, unstable operation of the system (with an exaggeration of the estimated flow rate) or flooding of the roof (with an underestimation of the flow rate) is possible. The emergency overflow system can compensate for design errors associated with underestimating water flow.

Mistake #6

Installation errors are very critical. These include incorrect installation of funnel elements, deviation from the design pipe diameters, changes in routing, errors in sealing joints with roofing material, defects in welds, etc.

All these disadvantages of working with stormwater systems are based on different reasons. Therefore, the measures to combat them are different. the very same reliable way to avoid possible shortcomings is strict compliance with the requirements of existing building regulations and installation instructions, as well as the Geberit Pluvia Planning Guide.

The Geberit Pluvia internal drainage system is based on the principle of vacuum siphon action. It consists of roof outlets, pipes and fittings made of polyethylene low pressure(HDPE) Geberit, a well-developed fastening system and a professional technical support package from the manufacturer. Thanks to its siphon effect, Geberit Pluvia ensures fast water drainage without the need for pipe slopes. Due to the high performance of the system, it is possible to minimize the number of risers and outlets compared to a traditional system.

Geberit Pluvia - Intelligent internal drainage system

Geberit Pluvia, the most common siphon internal drainage system, is used in different countries world for 35 years.

Geberit Pluvia For modern architecture

Thanks to its reliability and design flexibility, the Geberit Pluvia system has been the choice of engineers and architects for many years for the most significant and demanding projects. In contrast to self-flowing drainage systems, Geberit Pluvia is the solution for modern architecture. Due to the lack of slope of horizontal pipelines Pluvia systems it becomes possible to reduce the space under the roof required for the system, and to implement the most daring architectural and engineering solutions.

The widest range of applications for Geberit Pluvia

The Geberit Pluvia siphon internal drainage system is widely used in the industrial and commercial sectors for roofs over 1000 m 2 . The principle of operation and the high throughput of this gutter system allow it to be used in a wide variety of applications: flat roofs, domed and arched roofs of various curvatures, inverted and green roofs with both extensive and intensive greenery. Geberit Pluvia is particularly effective in projects such as factories, warehouses, shopping centres, airports, hotels, sports centres, etc.

Function Geberit Pluvia

The Pluvia drainage system (translated from Latin as “Rain”) is based on the gravitational-vacuum principle. When the liquid column moves under the action of gravity, a rarefaction occurs, the maximum value of which is reached at the top of the riser. The vacuum is transmitted through a horizontal collector to the point of water entry - a receiving funnel. This siphon effect is due to the special design of the funnels and accurate calculation pipe diameters, for maximum filling with water. The principle of operation of the Pluvia system determines all its advantages compared to the traditional system: a reduction in the diameter of pipes and the number of funnels, the absence of a slope of horizontal sections of the drain and pipes at the base of the building.

Drain funnels Geberit Pluvia

Pluvia funnel for fastening waterproofing material, with a maximum drain capacity of 6 l / s. For collecting and draining rainwater from the roof.

The Pluvia roof outlet, without apron, is used for connection with any roof sealing material. Can be installed with a minimum thermal insulation thickness of 12 cm. Scope of delivery: housing with horizontal outlet, fasteners, drain disc, flow stabilizer, protective plug, lubricants.

Pluvia funnel with flange for fastening waterproofing material, with a maximum drainage capacity of 6 l / s. For collecting and draining rainwater from the roof.

Pluvia funnel application

• To collect and drain rainwater from the roof
• For siphon drainage system
• For connection with roofing polymer coating
• For horizontal pipeline connection
• Do not use for flange connection roofing with top fleece layer (e.g. Rehpanol fk)

Pluvia funnel description

• Outlet with the ability to directly change to a smaller / larger diameter
• Outlet pipe can be shortened
• Temperature resistant up to 80°C
• Maintenance-free connection with sealing flange

Pluvia funnel with polystyrene insulation and apron with a maximum drainage capacity of 12 l / s. For bituminous roofing.

The Pluvia roof drain, complete with insulation and apron, 12 l/s, is used for installation on roofs without vapor barrier. For roof mounting with vapor barrier in combination with an additional enclosure base. Heating element cannot be installed after installation is completed. Scope of delivery: mounting block with built-in stainless steel drain disc, insulation, flow stabilizer, protective plug.

Funnel Pluvia complete, with flange, 12 l/s

Complete Pluvia outlet, with flange for attaching waterproofing material, maximum drain capacity 12 l / s. It is used to collect and drain rainwater from the roof. It is applied on a roof with a siphon drainage system.

It is forbidden to use for flange connection of roofing with the top fleece layer. Outlet with the possibility of direct change to smaller / larger diameter and shortening. Temperature resistant up to 80°C. Maintenance-free connection with sealing flange. Minimum drain capacity 1 l / s. The maximum height of the backwater is 35 mm. Scope of delivery: flow stabilizer, mounting flange with seal and nuts for roofing film, mounting block with built-in stainless steel drain disc, polystyrene insulation.

The complete Pluvia roof outlet with polystyrene insulation and welding flange is used for welding into a gutter with a width of at least 35 cm. It is installed on a steel roof. Scope of delivery: body with metal fixing disc, insulation, flow stabilizer, protective plug.

The Geberit Pluvia roof drain is used to collect and drain rainwater from the roof.

Used for siphon drainage system. For installation on steel roofs. For installation in trays with a width of at least 30 cm. Outlet with the possibility of a direct change to a smaller / larger diameter. Outlet pipe with the possibility of shortening. Temperature resistant up to 80°C. Maintenance-free connection with sealing flange. The maximum height of the backwater is 35 mm. Minimum drain capacity 1 l / s. Maximum drain capacity 12 l / s. Scope of delivery: flow stabilizer, mounting flange with seal and nuts for roof foil, mounting block with integrated stainless steel drain disc.

Pluvia emergency overflow outlet 12 l/s is used for emergency overflow on roofs equipped with Pluvia outlets with maximum flow 12 l/s. The overflow element is adjustable.
Scope of delivery: EPDM seal, two plastic funnel holders, two metal funnel holders.

Complete Pluvia outlet with flange for attaching waterproofing material.

It is used to collect and drain rainwater from the roof. Used for siphon drainage system. The load on the funnel is not more than 150 kg. Body with vertical outlet d 90mm, 110mm or 125mm.
Scope of delivery: flow stabilizer, stainless steel apron, wing nut, protective plug.

Flat roof storm drain Geberit Pluvia

The system uses components with optimized hydraulic performance. The design of the storm funnel, risers and pipes allows them to fill with rainwater quickly and without air pockets. A continuous water column is formed in the pipeline. Falling, this column creates a reduced pressure. This greatly increases the flow rate and throughput compared with conventional systems with the same pipe diameter.

“Complete removal of precipitation from the roof is one of the conditions for the durability of any building. High performance Pluvia system prepares the building for the heaviest storms and significantly reduces the cost of internal networks drainage, as far fewer rainwater funnels, risers and sewer pipelines, - comments Andrey Bilev, technical consultant on pipeline systems Geberit. — In addition, the high flow rate promotes self-cleaning design and reduces the risk of clogging. The absence of slopes gives architects maximum freedom in designing roofs and utilities.”

A wide range of funnels, pipes and fittings makes it possible to adapt this system to buildings of any purpose. Customers and designers can always count on technical support manufacturer and advice on specific projects.

Pluvia system pipelines are made of low-pressure polyethylene (HDPE) and are very convenient and technologically advanced in operation. They are hermetically connected by butt welding or by means of electrofusion couplings. Original fixtures, consisting of brackets and guides, allow you to securely fix HDPE pipes under roofing. In addition, individual components of the system can be pre-assembled at the factory, which increases the safety of work, facilitates and speeds up the arrangement of gutters at the facility.

Pluvia storm drains can be used both in the construction of new warehouse, industrial, commercial and sports facilities, as well as in the modernization of existing flat roofs. Due to the low load on building structures, this system is optimal solution for draining rainwater from light roofs with large spans. In particular, the system was used during the reconstruction of the Luzhniki Grand Sports Arena.

When choosing pipes, it should be taken into account that press connections of the Mapress series are designed for pressures up to 16 bar, and Mepla - for operating pressure not exceeding 10 bar.

Fast, safe and accurate installation

Construction technology with Geberit systems is far superior to traditional pipe laying methods by welding, threading and soldering. It requires minimal preparation, and the whole process is carried out several times faster.

When starting to create pipelines based on Geberit press systems, the master first measures and cuts the pipes according to the project. Cutting can be carried out both electromechanically and hand tool. After that, the outer and inner chamfers are removed, and a mark is made on the pipe for entering the fitting. Also, the ends of each product are cleaned of burrs and irregularities in order to obtain a perfectly smooth and clean surface, which will ensure a strong connection of joints during installation.

Pipe fastening is carried out using the press fittings included in the Geberit system kit, equipped with profiled sealing rings of a unique design. It is these elements that are responsible for the tightness, reliability and durability of the connection. Also, during the installation process, special equipment is used that allows you to adjust Geberit fittings:

• pipes with a diameter of 16–26 mm from the Geberit Mepla series are usually connected using hand tools;
• pipes of the Mapress and Mepla series with a diameter exceeding 26 mm are fastened using electric pressing tools.

It starts with tracing the network and connecting the prepared pipes using press fittings (the pipes are inserted into the sockets of the fitting at the intended depth). Further, holding them between the crimping lips of the pressing tool, the master presses the start button, after which the compression process automatically begins. Under pressure, the press fitting, o-ring and pipe are deformed to a certain shape, forming a strong, durable and tight connection. Having fastened two pipes together, the master installs other elements in the same way, creating a pipeline of the desired length and configuration.

Benefits of using Geberit press systems

• High speed. The simplicity of pipe connection technology allows you to quickly create pipelines of any length with minimal cost time and money, resulting in significant cost savings and speeding up the entire process.
• Ease of work. The use of compact and powerful special equipment makes the work as simple as possible. Moreover, it is convenient to carry them out even in hard-to-reach places and cramped spaces.
• Connection reliability. As a result of the use of Geberit systems and special equipment, reliable pipelines with strong connections with torsional rigidity and tightness are obtained.
• High aesthetics. In addition to their excellent performance, Geberit connections have an aesthetic appearance. That is why they can be used in projects involving open pipe laying.