Geotextiles

To improve soil characteristics, the use of geotextiles is common in civil construction projects for soil fills. Poor soil becomes more manageable by using geotextiles, which enables construction in otherwise unsuitable places. During many projects such as harbours, roads and drainage structures, the engineers prefer using geotextiles. These also help to separate two soil layers of different characteristics.

Geobags

High-strength sand-filled geotextile bags are geobags. These are available in various sizes. The use of these bags is mainly in beach protection, riverbank and offshore breakwater.

The other name of a geobag is geotextile sand container (GSC). For shore protection structures and the reinforcement of existing coastal barriers and structures, these bags provide a low cost, soft and reversible solution. As an alternative to conventional hard structures, geobags are becoming extremely popular.

There are different ways of placing geobags. These are:

  • As a blanket: Our workers place one or two layers of bags directly on the slope. To keep the contact areas of the bags larger, we prefer the bags to be partially filled, so that the sides remain flattened.
  • As a stack: In this procedure, we stack up the bags in the shape of a pyramid. With the long side parallel to the shoreline, these bags lie over-lapping.

We avoid installing geosystems on a rough foundation as the casing of the elements gets damaged from sharp elements. There is also another fact that one should not fill the geobags fully.

Geotubes

Capsule shaped elements formed by putting together geotextile rolls are geotubes. These have the strength of holding a relatively large amount of water-saturated material. The structure of these tubes is porous. When filled with a water-saturated material, the water passes out through the pores and the solid material remains inside the tube. For erosion control and storage purposes, geotubes are useful. There can be various sizes of geotextile bag, tube and carrier, ranging from 1 m3 to 3000 m3.

The use of geotubes is for:

  • Manufacturing of stability pads used under the water
  • Controlling the thalweg erosion by berms,
  • Arbitration of coastal structures against waves
  • Protecting the bridge edge legs against the erosion
  • Storing the material from the bottom sweep
  • Storing clean or contaminated materials

The Use of Geotextiles in Drainage

The use of geotextile is also common in drainage.

  • Drainage pipes: Placing geotextile with the drainage pipe gives more protection and prevents blockage.
  • Trenches: The capacity of the soil towards the drainage ditch increases considerably on placing geotextile at the bottom of the trench.

Laying of Underwater Pipes

There can be several challenges in placing pipes on the bed of a waterbody. With our efficient workforce and modern machinery, we overcome these challenges and successfully lay pipelines under the water for various projects. S-lay, J-lay and tow-in are the three main ways of laying the pipes. Geotextile often helps in the proper laying of the pipes.