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Geology/Water Table

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Question
Dear Sir ,
         if we encounter water table at depth of 16ft at home construction site .now my question is that how can we used this foundation for Home ?  what we should we do over-here ?


regard:
waqar

Answer
Dear Sir

Water Table at the depth of 16ft at home construction is not favourable by any means, however certain measures to stop or control flow channels etc are given below.

Geotextiles can be used in various ways for erosion control on construction sites. Use them as matting to stabilize the flow of channels or swales or to protect seedlings on recently planted slopes until they become established. Use matting on tidal or stream banks, where moving water is likely to wash out new plantings. Geotextiles can be used to protect exposed soils immediately and temporarily, such as when active piles of soil are left overnight. They can also be used as a separator between riprap and soil, which prevents the soil from being eroded from beneath the riprap and maintains the riprap's base.

Geotextiles are porous fabrics also known as filter fabrics, road rugs, synthetic fabrics, construction fabrics, or simply fabrics. Geotextiles are manufactured by weaving or bonding fibers that are often made of synthetic materials such as polypropylene, polyester, polyethylene, nylon, polyvinyl chloride, glass, and various mixtures of these materials. As a synthetic construction material, geotextiles are used for a variety of purposes such as separators, reinforcement, filtration and drainage, and erosion control (USEPA, 1992). Some geotextiles are made of biodegradable materials such as mulch matting and netting. Mulch mattings are jute or other wood fibers that have been formed into sheets and are more stable than normal mulch. Netting is typically made from jute, wood fiber, plastic, paper, or cotton and can be used to hold the mulching and matting to the ground. Netting can also be used alone to stabilize soils while the plants are growing; however, it does not retain moisture or temperature well. Mulch binders (either asphalt or synthetic) are sometimes used instead of netting to hold loose mulches together.   Fabrics come in a wide variety to match the specific needs of the site and are relatively inexpensive for certain applications.
with regards

Geology

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Dr D S Subrahmanyam

Expertise

All questions related to Geology, Geotechnical Engineering (especially in-situ stress, in-situ Deformability and Shear investigations) required for underground tunnels and excavations, Dimensional Stone Mining. Can't answer Soil dynamics related to Geotechnical Engineering

Experience

Geology and Geotechnical Engineering and Dimensional Stone Mining

Organizations
National Institute of Rock Mechanics (Govt of India)

Publications
International Journal of Mining Engineering and some other Indian journals

Education/Credentials
Doctorate in Geology

Awards and Honors
Reviewer for 3 International Journals

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