The Geberit Pluvia internal drainage system is based on the vacuum-siphon principle. It consists of roof drains, pipes and fittings made from Geberit HDPE, a sophisticated fastening system and a professional service package technical support from the manufacturer. Thanks to its siphon effect, Geberit Pluvia ensures rapid drainage of water without requiring pipes to be sloped. Due to the high performance of the system, the number of risers and outlets can be minimized compared to a traditional system.
Geberit Pluvia - Intelligent roof drainage system
Geberit Pluvia, the most common siphon system for internal drainage, 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 critical projects. Unlike gravity drainage systems, Geberit Pluvia is a solution for modern architecture. Thanks to the absence of a slope in the horizontal pipelines of the Pluvia system, it becomes possible to reduce the space under the roof required for the system and implement the most daring architectural and engineering solutions.
The widest range of applications for Geberit Pluvia
The Geberit Pluvia siphon gutter system is widely used in the industrial and commercial sectors for roofs larger than 1000 m2. Working principle and high throughput This drainage system allows it to be used in a wide variety of applications: flat roofs, domed and arched roofs of various curvatures, inversion and green roofs with both extensive and intensive landscaping. Geberit Pluvia is used particularly effectively in projects such as factories, warehouses, shopping centers, airports, hotels, sports centers, etc.
Function of Geberit Pluvia
The Pluvia drainage system (translated from Latin as “Rain”) is based on the gravity-vacuum principle. When a column of liquid moves under the influence of gravity, a vacuum occurs, the maximum value of which is reached at the top point of the riser. The vacuum is transmitted through a horizontal collector to the water entry point - the receiving funnel. This siphon effect occurs due to the special design of the funnels and the precise calculation of pipe diameters for maximum filling with water. The operating principle of the Pluvia system determines all its advantages compared to the traditional system: a reduction in the diameter of the pipes and the number of funnels, the absence of a slope in the 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 drainage capacity of 6 l/s. For collecting and draining rainwater from the roof.
The Pluvia funnel, assembled, without an apron, is used for connection with any roofing sealing material. Installation is permissible with a minimum thermal insulation thickness of 12 cm. Scope of delivery: housing with horizontal outlet, fastening elements, drain disc, flow stabilizer, protective plug, lubricants.
Pluvia funnel with flange for fastening waterproofing material, with a maximum drain capacity of 6 l/s. For collecting and draining rainwater from the roof.
Using the Pluvia funnel
- For collecting and draining rainwater from the roof
- For siphon drainage system
- For connection with roofing polymer coating
- For horizontal pipeline connection
- Do not use for flange connection of roof covering with top fleece layer (for example, Rehpanol fk)
Description of the Pluvia funnel
- Outlet pipe with the possibility of direct transition to a smaller/larger diameter
- Exhaust pipe can be shortened
- Heat resistance up to 80°C
- Maintenance-free connection with sealing flange
Pluvia funnel with polystyrene insulation and apron with a maximum drain capacity of 12 l/s. For roofs with bitumen coating.
Pluvia funnel assembled, with insulation and apron, 12 l/s, used for installation on roofs without vapor barrier. For installation on roofs with vapor barriers in combination with an additional housing base. The heating element must not be installed after installation has been completed. Scope of delivery: mounting block with integrated stainless steel drain disc, insulation, flow stabilizer, protective plug.
Pluvia funnel assembly, with flange, 12 l/s
Pluvia funnel assembly, with flange for attaching waterproofing material, maximum drain capacity 12 l/s. It is used for collecting and draining rainwater from the roof. Used on roofs with a siphon drainage system.
Do not use for flange connection of roof covering with top fleece layer. Exhaust pipe with the possibility of direct conversion to a smaller/larger diameter and shortening. Heat resistance up to 80°C. Maintenance-free connection with sealing flange. Minimum drain capacity 1 l/s. The maximum support height is 35 mm. Scope of delivery: Flow stabilizer, mounting flange with seal and nuts for roofing film, mounting block with integrated stainless steel drain disc, polystyrene insulation.
The Pluvia funnel assembly, with polystyrene insulation and welding flange, is used for welding into a gutter at least 35 cm wide. Installed on a steel roof. Scope of delivery: housing with metal mounting disc, insulation, flow stabilizer, protective plug.
The Geberit Pluvia funnel, for installation in a tray, is used to collect and drain rainwater from the roof.
Used for siphon drainage system. For installation on steel roofing. For installation in trays with a minimum width of 30 cm. Outlet pipe with the possibility of direct conversion to a smaller/larger diameter. Exhaust pipe can be shortened. Heat resistance up to 80°C. Maintenance-free connection with sealing flange. The maximum support height 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 roofing film, mounting block with integrated stainless steel drain disc.
Pluvia emergency overflow funnel, 12 l/s is used for emergency overflow on roofs equipped with Pluvia funnels with a maximum flow rate of 12 l/s. The overflow element is adjustable.
Scope of delivery: EPDM seal, two funnel fastenings made of plastic, two funnel fastenings made of metal.
Pluvia funnel assembled, with a flange for attaching waterproofing material.
Used to collect and drain rainwater from the roof. Used for siphon drainage system. The load on the funnel is no more than 150 kg. Housing with vertical outlet d 90 mm, 110 mm or 125 mm.
Scope of delivery: flow stabilizer, stainless steel apron, wing nut, protective plug.
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Pluvia funnel assembly, flow rate 25 l/s, with apron 60x60 cm and stainless steel body. become |
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Funnel Pluvia, flow rate 45 l/s, stainless steel |
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Water drainage with a systematic approach
Geberit know-how covers the entire path that water takes in a building. From connection to the water supply through distribution to all floors and consumers to the drainage of water from buildings and roofs into the public sewerage system – Geberit offers systems that are perfectly coordinated with each other.
Tomorrow's standards today
Geberit drainage systems and connection devices enable designers and plumbers to offer their customers a solution that is state-of-the-art in terms of hydraulics, fire and sound insulation, reliability, ease of installation and environmental friendliness. Thanks to the continuous development of its products in its own research laboratories, Geberit is already introducing tomorrow's standards today.
Application of our customers' know-how
Practical suitability as well as ease and reliability of handling on construction sites are decisive for the commercial success of products and systems. This is why Geberit always takes into account feedback and suggestions from sanitary installation companies and design engineers from all over the world when developing new products or improving existing products. This means that every Geberit product also benefits from our customers' know-how.
Building drainage systems
Geberit offers reliable technological solutions for building drainage for almost any area - from installations with optimal fire safety and sound insulation for private single- and multi-family houses and drainage systems for multi-storey buildings to special solutions for industrial and commercial buildings. Geberit products and systems take into account both the results of our own research in research departments and laboratories, as well as feedback and evaluations from customers.
Internal drainage system
The Geberit Pluvia rainwater drainage system has revolutionized the drainage of large roof areas. The reduced-pressure technology of internal drainage systems provides almost twice the drainage capacity of conventional drainage systems and simplifies their planning as complex systems. This allows large buildings to be well prepared for heavy rains, which have become much more frequent in recent years.
Floor drainage
Geberit drainage systems, whether shower channels, floor drains or innovative wall drains, always ensure reliable drainage in the shower area. Like all Geberit systems, Geberit drains are based on the manufacturer's practical knowledge of hydraulic processes, which ensures reliable and fast water drainage, easy cleaning and protection against clogging. These systems simplify installation and flooring.
Drains and siphons
Reliable, robust and high drainage capacity: Geberit drains and siphons are the connecting elements between sanitary installations such as showers, bathtubs, washbasins, toilets and washing machines and dishwashers. They ensure optimal interaction of all systems in the building.
TYPICAL TECHNOLOGICAL CARD
Installation of the GEBERIT PLUVIA siphon system for internal drainage
1 AREA OF USE
1 AREA OF USE
A standard technological map (TTK) has been drawn up for the installation of the GEBERIT PLUVIA siphon internal drainage system.
The TTK is intended to familiarize workers and engineers with the rules for the production of work, as well as for the purpose of using it in the development of work production projects, construction organization projects, and other organizational and technological documentation.
The Geberit Pluvia siphon internal drainage system is widely used in the industrial and commercial sectors for roofs with an area of more than 1000 m. The operating principle and high throughput of the drainage system allow it to be used in a wide variety of areas: flat roofs, domed and arched roofs of various curvatures, inversion and green roofs , both with extensive and intensive landscaping. The use of Geberit Pluvia is especially effective when designing factories, warehouses, shopping centers, airports, hotels, sports centers, etc.
2. GENERAL PROVISIONS
The system operates on the siphon effect principle and uses a method for accurately calculating pipe diameters. A necessary condition for operation is 60-100% filling of the system, which is achieved by calculation using the ProPlanner Pluvia computer program.
Fig.1. The system consists of roof outlets, Geberit HDPE pipes and fittings, and an original steel fastening system
A column of liquid falling in the riser creates a vacuum and carries away new portions of water from the roof. In this case, a significant vacuum is created at the receiving funnel, followed by a sharp increase in the productivity of the entire system.
Thanks to its siphon action, Geberit Pluvia allows rainwater to be drained quickly and efficiently from large roofs with smaller pipe diameters compared to a traditional system. This does not require slope in horizontal pipelines and temperature compensation. The system is mounted according to the principle of rigid embedding on anchor supports. Reducing the diameters and number of pipes and risers leads to a reduction in the volume and cost of construction and installation work. Geberit Pluvia is completely sealed due to butt welding of the pipes, occupies a smaller building volume and has a self-cleaning effect due to high flow rates. According to current building codes, with a roof slope of less than 1.5%, the estimated rainwater flow for Moscow is 80 liters per hectare (q20). However, taking into account the changing climate and increasing rainfall intensity, Geberit recommends a value of 196 hp/ha (q5) for roof slopes up to and above 1.5%. Based on this value, the Geberit Pluvia system was calculated and installed in large hypermarkets AUCHAN, METRO, MEGA-1 and other facilities. This system is confirmed by TU 4923-001-00284581-2004, approved by the Scientific Research Institute of Plumbing on November 25, 2004.
The operation of the Geberit Pluvia system is based on the vacuum-siphon principle. It consists of roof drains, pipes and fittings made from Geberit low-density polyethylene (HDPE), a sophisticated fastening system and a professional package of technical support services from the manufacturer. Thanks to the siphon principle, Geberit Pluvia ensures rapid drainage of water without requiring pipes to be sloped. The high performance of the system allows you to minimize the number of risers and outlets compared to a traditional system.
Thanks to its reliability and flexibility in use, the Geberit Pluvia system has been used for many years by leading architects and engineers in the design of the most significant projects.
Fig.2. The absence of a slope in the horizontal pipelines of the Pluvia system makes it possible to reduce the space under the roof required for the system and implement the most daring architectural and engineering solutions
The Pluvia drainage system (translated from Latin as “rain”) is based on the gravity-vacuum principle. When a column of liquid moves under the influence of gravity, a vacuum occurs, the maximum value of which is reached at the top point of the riser. The vacuum is transmitted through a horizontal collector to the water entry point - the receiving funnel. The siphon effect occurs due to the special design of funnels and precise calculation of pipe diameters, which contributes to maximum filling with water. The operating principle of the Pluvia system determines its advantages compared to the traditional system: a reduction in the diameter of the pipes and the number of funnels, the absence of a slope in the horizontal sections of the drain and pipes at the base of the building.
The pipes are connected by hot butt welding (in hard-to-reach places - with electric fusible couplings) and installed using a large number of anchor supports without installing temperature compensators. Thus, the drainage system becomes completely sealed.
Fig.3. Geberit Pluvia outlet funnels
Fig.4. Geberit Pluvia pipeline fastening system
3. ORGANIZATION AND TECHNOLOGY OF WORK EXECUTION
The Geberit Pluvia system is attached as follows:
- horizontal fastening - using the Pluvia fastening system;
- vertical fastening - using expansion joints;
- horizontal and vertical fastening - through rigid mounting.
For the installation of horizontal sections of pipelines of the Geberit Pluvia siphon storm drainage system, the Geberit PluviaFix pipeline fastening system was specially developed. The forces caused by temperature changes in the pipes are transmitted to the anchor supports and then to the square steel profile (bus), which compensates for the resulting mechanical loads. The Geberit PluviaFix installation system guarantees quick installation, fewer points of attachment to the roof, and the possibility of pre-assembling individual components.
Fig.5. Geberit Pluvia internal drainage system:
Suspension (threaded rod M10); - fixed support; - movable support; - distance between suspensions; - distance between brackets; - distance between fixed supports; - weight of a fully filled suspended system
Distance between brackets for Geberit Pluvia mounting system
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Pipe diameter |
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This fastening system has been specially developed for horizontal sections of the Pluvia siphon system.
Fig.6. The forces caused by temperature changes in the pipes are transmitted to the anchor supports and then to the square steel profile (bus), which compensates for the resulting mechanical loads
Fig.7. Fastening pipelines to the Pluvia support profile
Sliding supports are installed at the following distances ():
Pipes from 40 mm to 75 mm - every 0.8 m
Pipe 90 mm - every 0.9 m
Pipe 110 mm - every 1.1 m
Pipe 125 mm - every 1.25 m
Pipe 160 mm - every 1.6 m
Pipe 200 mm - every 2.0 m
Pipe 250 mm - every 1.7 m
Pipe 315 mm - every 1.7 m
The support profile has a length of 5 meters, is mounted along the entire length of the pipelines, and is connected with special elements.
Fig.8. Fastening pipelines directly to the concrete floor
Fig.9. Methods for attaching pipelines to a support rail
Anchor supports are installed in the following order (Fig. 10):
1. At the beginning and at the end of the pipeline section.
2. At each tee or branch of the pipeline manifold.
3. Every 5 meters along the length of the pipeline.
Fig. 10. Installation of anchor supports
Two anchor supports are installed on each tee - one in each direction of the unifying flow. Below are shown options for the location of anchor supports (Fig. 10).
1. Using electric welded tapes.
2. Using electric welded couplings.
3. Using double flange bushings (for 125 and 200 mm).
Installation of Geberit Pluvia vertical pipelines
Fig. 11. Installation of Geberit Pluvia vertical pipelines with thermal expansion compensation
Fig. 12. Installation of Geberit Pluvia vertical pipelines without compensation (rigid fastening)
- Geberit Pluvia system pipelines are designed to operate with a completely filled cross-section. This reduces the pipe diameter to the minimum required, which leads to a reduction in the cost of the entire system due to lower total material consumption and ease of installation of the system
Self-cleaning of pipelines
- High speed flow and complete filling of the pipeline section prevents the deposition of contaminants inside the pipes, which promotes self-cleaning of the system. As a result, the time spent on maintenance and the risk of emergency situations are reduced.
Fewer roof drains
- Thanks to the higher performance of the funnels of the Geberit Pluvia siphon-vacuum system, the number of funnels required is reduced. The result is material savings, a reduction in the amount of work, as well as the emergence of architectural freedom in the design of the roof structure
No slope
- Laying pipelines without slope increases design freedom and efficiency. Since horizontal sections of the Geberit Pluvia pipeline do not require a slope when laying, the installation of a stormwater system does not lead to a loss of usable space in the serviced room
Fewer outlets and outlet risers
- Due to the fact that the pipe cross-section is filled entirely, the required number of outlet risers and outlets is reduced. The result: greater design flexibility and lower costs
Fewer underground pipelines and wells
- The costly network of underground pipelines is eliminated or minimized, which inevitably affects cost reduction
High adaptability to various installation conditions
- Simple and easy installation – the presence of a specially designed fastening system makes it as easy as possible installation work. Allows prefabrication of pipeline components on the ground
Architectural freedom in design
- High degree of adaptability and freedom to design various architectural solutions. The system is suitable for installation on roofs with different design features and anywhere in Russia
The Geberit Pluvia drainage system is based on the gravity-vacuum principle. Geberit funnels have a special design, thanks to which the pipes quickly fill with water and air pockets do not form in the pipeline.
Advantages of the Geberit Pluvia drainage system
The Geberit Pluvia gutter system has several advantages over traditional gutter systems:
- The number of Geberit funnels, risers and pipelines has been reduced;
- Reduced pipe diameter;
- No slope of horizontal pipelines required;
- There are no pipelines at the base of the building;
- The number of releases from the building has been reduced;
- The system is self-cleaning;
- Increased productivity due to the suction effect.
Operating principle of the Geberit Pluvia drainage system:
Attaching the Geberit Pluvia drainage system
Geberit roof outlets and downspouts are secured using a specially developed fastening system. The fastening system was developed for horizontal sections of the Geberit Pluvia pipeline - the forces caused by temperature changes in the pipeline are transmitted to the anchor supports and then to square steel profiles (busbars), thanks to which the mechanical loads are compensated.
Using this fastening system provides the following advantages:
- Installation speeds up;
- The number of attachment points to the roof is reduced;
- Temperature expansions are controlled;
- Individual units can be pre-assembled;
- A universal bracket is used for sliding and anchor supports.
An installation example is shown in the image below:
RA - distances at which sliding supports should be installed:
- For pipes with diameters from 40 to 75 mm - every 0.8 m;
- For pipes DN 90 mm - every 0.9 m;
- For pipes DN 110 mm - every 1.1 m;
- For pipes DN 125 mm - every 1.25 m;
- For pipes DN 160 mm - every 1.6 m;
- For pipes DN 200 mm - every 2.0 m;
- For pipes DN 250 mm - every 1.7 m;
- For pipes DN 315 mm - every 1.7 m.
The length of the support profile is 5 m, and it is installed along the entire length of the pipeline.
An example of attaching a drainage system to a concrete floor:
The procedure for installing anchor supports:
- At the beginning and end of the pipeline section;
- On each of the tees or bends of the pipeline manifold;
- Every 5 meters.
Two anchor supports should be installed on tees - one in each direction of flow. Anchor supports can be mounted using electric-welded couplings, electric-welded tapes or double flange bushings.
Vertical installation of the Geberit Pluvia system
The distance between the sliding supports is indicated in the table:
| D, mm | 32 | 40 | 50 | 56 | 63 | 75 | 90 | 110 | 125 | 160 | 200 | 250 | 315 |
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| m | 1,2 | 1,2 | 1,2 | 1,5 | 1,5 | 1,5 | 2,0 | 2,0 | 2,0 | 2,0 | 2,0 | 3,0 | 3,0 |
Typical installation errors
Over the course of their activities, Geberit specialists have collected the most common mistakes in installing a drainage system.
1. Incorrect selection of elements. For example, Geberit roof drains that are not suitable for a particular type of roof are often chosen. Also, sometimes changes are made to the design of the drainage system, and often such interference is due to the fact that all the features of the project were not initially taken into account. In such cases, some installers independently try to find solutions to the problems that have arisen right on the construction site, for example, by installing non-standard components on the Geberit funnel.
2. Selecting inappropriate fasteners - some installers choose fastenings without taking into account the specifics of the building structure. For example, if there are no necessary fixed supports, then vibration of the pipes may begin, and if expansion couplings are not used during vertical installation, then increased forces arise in the pipeline due to temperature changes; accordingly, it is necessary to compensate for this by installing pipe clamps on studs with large diameter (not less than 1/2ʺ). The force in places with such fastening is increased, and not all building structures can withstand it.
3. Some installers combine Geberit roof drains on roof areas with a large difference in height - more than 4 m. They often do this so that the final price of Geberit roof drains is lower. However, this solution can lead to water overflowing through Geberit funnels, which are located on the lower sections of the roof.
4. Connection to one section of the roof with an area above 5000 m2 - this error usually done when they want to simplify the system.
5. Incorrectly determined calculated rainwater flow. The reason for such an error can be many things, for example, inaccuracy when calculating the catchment area on complex roofs. Such errors can lead to unstable work the entire system as a whole and even roof flooding.
6. Incorrect installation. In general, any errors during installation become critical. So, incorrect installation elements of the Geberit funnel, defects in welds, errors in sealing, etc. can destabilize the drainage system.
To avoid these and other mistakes when installing the Geberit Pluvia system, you should carefully follow all the manufacturer’s recommendations when installing the pipeline.
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