Sewer funnel. Types and design of storm funnels for the roof

Roof drains are one of the main components of high-quality drainage from roofs. Climate change forces people to protect their buildings from unfavorable precipitation in every possible way. Therefore, it is very important that the storm drain works efficiently and without failures, because the façade and foundation of the house are at stake. Big problem industrial and government buildings have a flat roof, because water has a destructive effect on the roof carpet.

Absolutely flat roofs does not happen, so its reliability depends on the slope. For effective drainage, a slight slope is required. A good indicator would be a slope of 2-5 percent. In this situation, water will easily drain from the surface of the roofs, which will give more freedom for the functioning of the roofing carpet. If small defects appear, they will not cause much damage.

IN Lately there is not enough inclination, so when constructing a building, attention is paid storm systems drainage systems, which provide protection and reliability, and preference is given to the use of water inlet funnels.

The concept and principle of operation of a storm funnel

The main component of a drain is called a storm funnel. She's working on collection and removal Wastewater from the roofs With its help, rain and sediment liquid is transported first into pipes that are located inside or outside the building, and then into the sewer or to specially designated places.

Roof funnels are also the most important roofing structures for buildings. Representing a central location for collecting liquid, they require the correct installation of even a small wire on flat surfaces. The slightest miscalculations in system design can lead to malfunctions and loss of money.

To avoid leaks and ensure desired speed collecting liquid, it is necessary to control the tightness of all contacts on the wire connections. To increase density, it can be equipped with a pressure flange, an auxiliary drainage ring and an enlarged body. Funnels are installed at all stages of construction and connected by cast iron, steel or plastic pipes.

What parts does the funnel consist of?

Stormwater drainage funnel consists of the following components:

• Housing, including 1 or 2 flanges and a drain neck;
• Clamping flange that presses the roofing sheet;
• Screws and nuts that impart force to the clamp;
• Clamping screws that are located in smooth cylindrical holes;
• Wires and cables.

Storm funnel design (horizontal and vertical outlet)

Standard scheme:

1. Extension structure – upper part;
2. Extension cable – middle part;
3. The body for embedding heating is the lower part.

Based on the area where they are used, they can be:

1. WITH horizontal release;
2. WITH vertical outlet;

Difference: the location of the outlet pipe (hole for draining water).

1. With a swivel joint, the angle of rotation can range from 0 to 90 degrees.

In what cases are horizontal and vertical exhaust systems used?

With horizontal outlet they can be used for roofless roofing. The funnel clings tightly to the waterproofing, which is responsible for the heating process. Here she smoothly transitions to sewer risers, going down. It is worth taking note that this installation less profitable, since if there is a need to change a part, it will be necessary to open a large section of the roof. Plus, when installing a horizontal funnel, it is necessary to carry out calculations along the heating freezing limit. If there is a miscalculation, the system will freeze and stop functioning.

Types of storm drains and where they are used

Today, market shelves know more than 40 types of storm drains, which are made from the most various materials and can serve for the most various types buildings Depending on the type of structure, there can be: with or without heating system, with horizontal and vertical outlet, with or without filters. But we have already talked about these types a little higher.

Therefore, we will consider their division according to purpose:

• For roofing materials (bitumen and membrane);
• For roofs in traditional and inversion style;
• For roofs that are in use or not;
• For balconies and terraces.

To your attention! Typically, architects show points of minimum surface decline. Choosing the right funnel is the main task facing sewer designers.

For the right choice The designer must have the following information:

1. What is the section of the roof, its layers and dimensions;
2. The material and diameter of the equipment used for the storm pipe;
3. Information about: whether heating is needed;
4. Complete information about the funnel.

Advice! If you have questions, seek help from specialists who will help you obtain information on roofing sections.

Types of existing roofs:

1. Inversion or inverted roofing. It is characterized by laying the waterproofing cable on the base, and the remaining layers underneath it. As a result, the system works all year round at a temperature of 18-20 degrees Celsius. It is protected from ultraviolet radiation and has virtually no damage, which is reflected in the repair-free period, increasing it by 5-6 times. Penetrated with many wires connected into a cable, the heating system guarantees a stable temperature.
2. Lightweight roofs. To mount them, special funnels with a box are used, which are attached with a wire to the base.
3. Used roofs used with funnel models with flat lid, and not in use - a device with a ladder and a special grille;
4. Roofs with and without heating system. If it is green, then this is a mechanism with a crimp flange with a mesh that traps the grass. Freezing is possible for systems, so the following requirements are set for funnels: strength, lightness, corrosion resistance, long service life, ability to operate at temperatures from -50 to +80°C.

Attention! Important characteristic for funnels – operating period. On average, manufacturers provide a 50-year warranty. During this period, the cable may be damaged; the system will fail completely only if it is intentionally damaged.

Installation. Repair funnels

The area for placing the funnel must be selected based on the basics of building design; it is also worth taking into account the features of sewerage and storm drainage. The number of installed funnels depends on the design of the roof and the amount of precipitation. Basically, they should be located at a distance of 25 m and in a sector - every 200-300 sq.m. We select the type based on the characteristics of the waterproofing cable.

So, the roof slope must be at least 3%. To bypass the blockage of the main funnel, we install at least two similar systems. We connect all components to the sewer pipes and set up an emergency system in case of overload.

The system can be completed with:

1. A crimp flange that is connected by wire to the cable;
2. Drainage rings and nozzles;
3. Heating system;
4. Shut-off valves;
5. Wires and cable;
6. Gangways.

A special variety that warms the soul is the repair type. Its purpose is to reduce the cost of repairing the device. If a storm drain breaks down, replacing the heating waterproofing is sufficient. Reconstruction is carried out easily and without special effort. This system does not require heating. Repair devices have receiving indicators in their structure, and they can easily mount the storm drain mechanism.

Conclusions: knowledge of the features of storm drains when installing them on various roofs(used, flat, heating and not heating, etc.) will help you choose correct device, which will give you the opportunity not to interfere with the operation of the storm drain for many, many decades.

An important element of roofing drainage system building (structure) is a drainage funnel. Its main functional purpose is to organize the collection and removal of excess moisture from precipitation or snow from the roof surface.

When building houses with flat roofs, drainage funnels are installed in roof areas specially prepared for this purpose. Gutters are selected according to their design and structure, depending on the type of used roofing materials . Such funnels are used on bitumen roofs with internal system

drainage.

A properly selected drainage funnel design will ensure complete and rapid drainage of water accumulating on the roof, will not damage the waterproofing, and will not lead to local accumulation of water. In addition, such a drain will fit harmoniously into common system

drainage system, will not violate its technical and functional integrity, and will become a kind of aesthetic completion of the overall architectural plan of the roof.

Design Features The drain funnel has a complex interface with other structural elements. On the one hand, she is integral part

drainage system. The pipeline for draining rain and melt water begins from here. On the other hand, the roof drain is part of the roofing system.

It should not violate the integrity of the waterproofing layer and the topography of the adjacent roof surface. This is especially important to observe at the junction of the funnel material with the roof waterproofing. Considering that this element of the drainage system is located outside, it physical properties

• must meet strict climatic requirements: withstand significant differences
• temperatures;
• do not crack or crumble from exposure to severe frosts and winds;

do not soften, do not lose shape and strength when exposed to strong heat in summer. Also, the design of the funnel should prevent debris and other unwanted inclusions from entering the drainage pipes. In addition, the material from which drainage funnels are made must be resistant to solar radiation (ultraviolet radiation). It must also be resistant to acidic environments.

Some requirements for funnels

Manufacturers produce a wide range the lineup drainage funnels. They differ in shape, size (diameter, height, depth), design features structure, type of material, method of installation and fastening in the roofing system.

Most often used as a material for funnels polymer materials with high resistance to weathering and ultraviolet radiation. Less often metal can be used (cast iron, made of of stainless steel) funnels. According to their design, roof funnels are divided into vertical and horizontal.

Taking into account the climatic characteristics of Russia, funnels with forced electric heating are popular in our country. They differ from conventional ones by the presence of a fuel element in their design. The thermostat that controls the operation of the heater is set to a temperature range from -5°C to +5°C. When the heater is operating in drainage funnel No ice is formed that prevents outflow. The power supply is made using a special three-core solid cable (adapters, connections are not allowed).

Installation of a drainage funnel

Drainage outlets must be level and firmly installed in the intended place. seat. Funnels are equipped with airless flow filters. These design elements significantly increase the throughput of the drainage system during storm flows. Depending on the design of the roof and the funnel itself, various combined types fastenings

For example, on bitumen roofing types, the funnel flange is placed between the insulation layers. Additionally, the funnel can be attached to the base of the roof with screws. Similar installation technologies are used on other types of roofing (EPDM membranes, single-layer PVC coverings).

Funnels can be purchased at a low price in Moscow in the Santekhkomplekt online store. We are ready to offer discounts to wholesale buyers.

The Austrian company HL (Hutterer & Lechner KG) is the world's leading manufacturer of sewerage equipment (drains, funnels, storm drains, storm water inlets, valves, gates, flanges, siphons, outlets, adapters, cuffs, pipes, etc. HL sewerage equipment produced in Austria and Germany for over 100 years.

We offer a wide range of HL sewerage equipment allowing you to choose the one sewer drain, roof funnel, sewer seal, check valve or a siphon that you need for a specific project, rather than adjusting the project to specific equipment.

Our organization offers the following HL sewerage equipment:

HL funnels for internal storm drains can be used on all flat roofs with any hydro- and vapor barrier materials, with “pies” of any thickness and filling. HL funnels with both vertical (outlet size DN 40, 50, 70, 100, 125 and 150) and horizontal outlets (DN 70, 100); with stainless steel compression flange (for any waterproofing materials) or with a polymer-bitumen sheet for welding.

To improve the quality of roof repairs or when using old storm drains when reconstructing buildings, we offer repair funnels HL with outlet DN 70, 100, 125, 150 for steel or smooth walls cast iron pipe. We can also offer roof drains using the “water pump” principle with a PE outlet pipe for welding.

For balconies and terraces we offer HL funnels and drains with a swivel joint and an outlet pipe rotation angle from 0° to 90°. For our climate zone The most suitable are HL funnels with built-in electric heating (a self-regulating cable that changes its heat output depending on the air temperature).

Advantages of HL roof drains:

Power supply from 220V network (no need for a step-down transformer);
- electrical cable located inside the funnel body made of PP (there is no danger of breakdown through water drained from the roof);
- durability of the electrical cable (no contact with the environment);
- With outside the cable is shielded with thermal insulation (all the heat goes to heating the inner surface of the funnel);
- self-regulating electrical cable (no need to install remote thermostats);
- operating temperature from -50 to +100°C;
- PP material is not afraid of ultraviolet radiation, and its acid resistance is superior to cast iron and stainless steel;
- simple installation (no thermal compensators required);
- durability.

Array ( => Array ( => Y => Y) => Array () => Array ( => Array ( => 1 => Retail price=> CATALOG_GROUP_1 => 1 => 1)) => 3 => Array ( => 7 => 11 => 128) => Array ( => 27) => Array ( => Array ( => 7 => 2 => SPECIALOFFER => Special offer => L => => => F => => => Array ()) => Array ( => 11 => 2 => COLOR => Color => S => directory => Array ( => 1 => 0 => N => N => eshop_color_reference) => G => Y => => Array ()) => Array ( => 128 => 2 => SH_D => WxL => L => => => F => Y => => Array ()) => Array ( => 1 => BASE => Retail price => 1 => Array ( => Array ( => arrFilter_P1_MAX => arrFilter_P1_MAX => 9537 => RUB) => Array ( => arrFilter_P1_MIN => arrFilter_P1_MIN => 5373 => RUB)) => => Array ( => Ruble))) => Array () => Funnels for gravity drainage systems = >

Functional funnelsGeberit will help in arranging gravity drainage systems for flat roofs. Lack of drainage leads to rapid wear of facades and damage to foundations. Melt or rain...

=> Array ( => 72 [~ID] => 72 => 2 [~IBLOCK_ID] => 2 => 353 [~LEFT_MARGIN] => 353 => 354 [~RIGHT_MARGIN] => 354 => Funnels for gravity systems drainage [~NAME] => Funnels for gravity drainage systems =>

Functional funnelsGeberit will help in arranging gravity flow systems

[~DESCRIPTION] =>

Functional funnelsGeberit will help in arranging gravity drainage systems for flat roofs. Lack of drainage leads to rapid wear of facades and damage to foundations. Melt or rain water, flowing from the roof of buildings that are not equipped with storm drains, washes away the foundation, and the building collapses.

Funnels for gravity drains bear the main load, sucking up water, and then it enters the pipeline and is discharged into storm drains. The products are designed specifically for flat roofs, with bitumen or other coverings. For bitumen roofs We offer funnels - gratings with a throughput capacity of up to 150 kilograms. Such funnels are installed on large areas or on buildings erected in complex climatic conditions. For small bitumen roofs, standard funnels with a vertical outlet, protected by chromium-nickel aprons, are suitable. Such funnels cope with the drainage of rain or melt water and do not require maintenance. Small grilles do not allow debris to pass through, which eliminates pipeline blockages.

The funnels are complemented by internal HDPE siphons with a water seal into which water is discharged. The siphon has significant capacity and is easy to clean if clogged. In addition, for the installation of funnels, adapters and high-quality components are required, which are also made of HDPE material and are durable, resistant to ultraviolet radiation and deformation.

=> html [~DESCRIPTION_TYPE] => html) => /catalog/truby/geberit_hdpe/voronki_dlya_samotechnykh_sistem_vodostoka/ => Array ())

Natural retention of moisture on the surface is a feature of flat roofs. It accumulates due to rain and melting snow. To prevent flooding of upper floors and staircases, they are used special devices. Receiving funnel For storm sewer on the roof drains water from the roof in a timely manner, protecting institutions, apartment and private buildings, and industrial facilities with equal success.

Purpose of funnels for storm drainage

Water inlet for flat roofs

The main task of the products is to remove liquid from the roof. To do this, a drainage mechanism is installed on the roof, combining several funnels. They are mounted in a certain sequence, covering the entire surface. Through them, water flows through pipes into a sewer, ravine or ditch, beyond the territory of the facility.

Funnels must meet certain standards:

• durable, waterproof contact with the roofing waterproofing system;
• sufficient length of the pipe for connection to the riser in the attic or in the ceiling room;
• a filtration system that protects the pipe from blockages.

Together, these parameters will ensure rapid removal of excess liquid from the roof.

Types and design of funnels

Leaf catcher for roof drains

There are many types storm funnels, combined into 2 basic categories:

• flat models with grilles;
• bell-type modifications.

In the first case, installation is carried out on monolithic roofs without a sand layer. The gratings are made in the form of cells, squares, ovals, etc. All storm water flows from above, so the grate is at or slightly below roof level. Protection against debris is provided by a galvanized mesh, umbrella or internal cone.

The bell structure includes the funnel itself, the inner umbrella, and the cap (glass and lid). The edges are equipped with special teeth that clamp the roofing material tightly adjacent to the surface. There are ribs inside that open a small gap for water to drain. As a result, leaves, paper and other debris do not fall into the pipe, preventing clogging.

Production materials

Bell-shaped funnel for storm drainage

When choosing a material, facility owners and specialists are guided by its ability to withstand moisture. Because of this preference for a long time favored cast iron and galvanized steel. Today they are also widely used, but are largely being replaced by plastic, which has already proven its effectiveness.

• Cast iron monolithic models. A common version, adapted to tightly clamp the roll surface. It forms a waterproofing carpet, quickly removing excess moisture. Cast iron is also in demand due to decorative properties– bell structures created from it look representative.
• Steel modifications. A reliable option, used both in lattice models and in hoods. Funnels are made from semi-boiler, asphalted, galvanized iron, which guarantees a long service life and protection against corrosion. Performance properties are practically not inferior to cast iron, while steel costs much less.
• Plastic option. It is characterized by increased practicality and ease of installation. Such structures better withstand the effects of moisture, temperature and other environmental factors. The service life is not limited, and the price is much lower, which is especially important when completing industrial facilities.

The choice of material is determined by the characteristics of the object, including its area, appearance, aesthetic requirements.

Features of installing funnels on the roof

The installation of structures, their number and the interval between funnels depends on the characteristics of the object: area, configuration, rain volume and other parameters. In practice, the distance between the 2 elements is about 25 meters, which is enough for timely drainage. A smaller amount leads to clogging of the funnels with subsequent accumulation of liquid on a flat surface.

All components are connected to drainpipes, in case of overload is formed backup system. It is activated during spring melting of snow, heavy rain or during prolonged rains. In this case, it is important that the receiving part does not become clogged.

Installation is carried out in several stages:

1. The internal element is inserted into a special hole on the roof. The fastener should not be rigid.
2. The outer part is inserted from above, passing it through the roofing carpet and insulation. A seal ring is placed between the 2 elements.
3. The cap apron is installed on a roofing felt lining and an additional waterproofing layer.
4. The funnel is inserted into the bowl roof covering, which is fixed with a ring and fastening components.
5. The process completes the installation of the protective grille.

Success is determined by competent work planning and qualified specialists.