What is the internal drain

internal drain.The device

to snow or water during the rain does not leak to the living quarters and not eroded floors, provided the roof surface is smooth to reduce the drain hole, vertically standing pipe with rainwater from the top and bottom of the inclined pipe with an outside release.Noticed how in the rain at the entrance to the entrance of the pipe starts to leak water?This is the same issue.

So, internal drainage device such:

1. funnel water intake.
2. riser passing through all floors.
3. Discharge pipe.
4. Edition.

system is designed in such a way that, despite the plus or minus "behind" the water will be removed from the roof.In no case can not have a drain close to the outer walls, or in the winter it will just freeze and defrost the spring will need more than one day, as a consequence of the spring rains everyone will be on the upper floors of apartments.

device structure has certain features:

• funnel has an expanded base and further used as a clamp for waterproofing coatings;
• funnels should be located at a distance of no more than 48 cm This condition must be met for any type of roof construction.;
• in each section of the roof of a building may be a funnel;
• for internal drainage is necessary labor with a diameter of 85, 100 150, 200 mm;
• on the ground floor must be equipped manholes to detect blockages.

Species internal drains

Depending on the design of drains are gravity-flow and siphon.The gravity flow collection and discharge of water is carried out through the channels with a slope.This system is partially filled with water.

Siphon system works because it is completely filled with water.In this case, a solid column of water that originates and terminates in a funnel exit the drain.When precipitation falls, it turns negative pressure, which draws deposits from the funnel and moves them into a vertical riser.The result is a forcible removal of water from the roof, but it is much more efficient.

What is included in the calculation of domestic waterflow

Engineers include drainage system for another building design stage.The structure must be designed so that water could be removed even in the case where air is not able to get into the funnel.When calculating necessarily take into account:

• climatic characteristics of the region;
• rainfall;
• design features of the roof;
• dimensions of the building;
• reverse water pressure.

How to troubleshoot the internal drains of apartment buildings

Siphon system often becomes self-flowing pipe by installing a larger diameter than the previous ones.In case of breakage of domestic waterflow in an apartment building produce a complete replacement of the system in all the apartments if this old house.If the drain is located in the hallway and there was a general failure, the regular cleaning may not be effective.Lighter problems such as overgrown roof openings (and this also happens in the case of contact with plant seeds) can be easily removed, freeing the opening of unnecessary vegetation.

The proper design and operation, as well as careful attention to its housing tenants depends on the comfort of living and the protection of the building from the effects of precipitation.