Composite drainage for lost shuttering

Some geocomposite drainage products may be used as lost shuttering also.
The drainage composites which have a cement milk-proof layer on one side, made of PVC layer (nonwoven coated with a PP film) could be used for lost shuttering.

Application
1 side PVC geocomposite drains can be used as lost shuttering when installed against the foundation wall of the adjacent building, a bored pile wall, a vertical excavation face or a rock face, permitting to cast the fresh concrete immediately against the drain.

Basement drainage of a congress hall building construction

Geocomposite drainage sheets can also be used in higher depths. Photographs here shows some applications of drainage composites. They are ready to backfill. The backfill around the composites should be made very carefully because of the height. Direct flow of gravel and backfil materials may tear or damage the drainage materials.

This drainage composite was placed on the waterproofing layer.

For house basement drainage please check other drainage posts.

Drainage sheets on basement walls

On the basement walls of a big business area with many buildings an elastic special drainage product was used. Drainage sheet called Enkadrain was elastic with 2 filter fabrics on both sides and has a drainage core between them.

It was easy to cut and put it on the waterproofing. Liquid bitumen type waterproofing was used. So also the overlaps were glued with that waterproofing product.

After the job they backfilled carefully.

Using geocomposite drains ar much easier than filling the area with gravel.

Lost shuttering - drainage

Some geocomposite drainage sheet materials can be used as lost shuttering in many applications. An elastic drainage material should be chosen to be used on the piles with a lot of curved areas. Enkadrain CK maybe one of these drainage materials.

Enkadrain CK has a cement milk-proof layer on one side, made of brown or black-colour PVC (there are also other types)
Enkadrain CK can be used as lost shuttering when installed against the foundation wall of the adjacent building, a bored pile wall, a vertical excavation face or a rock face, permitting to cast the fresh concrete immediately against the drain.

Basement, cellar drainage, waterproofing

In the basements of buildings generally we have moisture problems. Even we have waterproofing water may enter the building. A good waterproofing system should be supported by drainage materials.
Geocomposites can intercept incoming water and drain it away from the structure towards the collector pipe.
To use a geocomposite drain is much easier and generally cheaper than conventional drainage systems like mineral drains. Forexample you should carry a lot of gravel to the construction site or building. It is also difficult to use heavy gravel. It is also necessary to cover the drainage pipe with a nonwoven geotextile to prevent clogging.
But a composite drainage sheet with a filter bothsides and only about less than half a kilograms per square meter you can make a better drainage system. Also the inside core of the drainage sheet should be elastic and the core should have a structure to let water go easily to all directions.

A good composite drainage system:

• Keeps wet soil away from walls
• collects and removes groundwater
• Protects the waterproofing on walls
• Relieves hydrostatic pressure

Advantages of composite drains:

• Ventilates - Prevents wall sweating and fungal growth
• Light and flexible-Readily adaptable to irregular wall configurations
• Economical - No extra accessories needed (i.a. strips, special fastenings, etc.)
• Reliable and durable

The composite drains can be used as do it yourself type of applications also.