Installation methods of prefabricated vertical drains (PVD's)

Wickdrains - Methods of installation

• Water Jetting
• Ramming
• Pushing, modern preferred method
• Pushing + vibration
• Pushing + water jetting

Tunnel drainage with geocomposites

In TAG motorway project a geocomposite drainage product was used. The project was a cut and cover tunnel.

To protect the waterproofing and also for drainage Enkadrain drainage sheets were used. All the tunnel covered carefully. The backfill around done carefully.

composite geosynthetics are also used inside the bored tunnels.

3D-Mat for erosion control

As seen on the picture above 3D mat is a three dimensional, structured, olive green (darker than the picture, you can see the speedlight lights) erosion control mat manufactured from polypropylene monofilaments.

It is easy the installation slopes upto 60 degrees. Covered with soil after seeding. Provides instant protection against soil erosion due to wind, rain, and flash flooding. Creates an artificial root system. Helps nature.

These type of erosion control products can be used for erosion protection of steep slopes, embankments, riverbanks, lakesides, shorelines, spillways, canals, and ditches. Also highly effective on golf courses and residential lawn areas.

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.

Applications of biaxial geogrids

Applications of biaxial geogrids

• Structural foundations
• Paved roads
• Construction haul roads
• Permanent unpaved roads
• Airport runways
• Car parks
• Basal reinforced platforms

Enkabreak - breaks the morter :)

While constructing the outer wall of the buildings there is always a risk of blocking the drainage holes with morter.

You may use Enkabreak to prevent that problem.

Enka-Break (thickness approximately 20 mm, height 300 mm) is placed vertically in the cavity, against the outer wall. The mat is fixed in position by bending the flat section on the top end horizontally and embedding it in the mortar or between the mortar and the bricks. Any mortar falling into the cavity will end up between Enka-Break and the inner wall.

As a result, Enka-Break prevents the blocking of the venting and drainage holes in the outer wall. It also prevents bridging between inner and outer wall.