Tube well estimation
Introduction
A tubewell is a type of water
well that consists of a long metal pipe or tube bored into an underground
aquifer. It's used to extract groundwater for various purposes such as
irrigation, drinking water supply, and industrial use. Tubewells are
particularly common in areas with high water tables or where surface water
sources are unreliable or contaminated.
Estimation of a tubewell
The estimation process begins with a detailed
design of the tubewell. Determine the depth of the well, diameter of the
borehole, length of casing and strainer sections, and other specifications.
These dimensions are then used to calculate the quantity of materials needed. GI
pipe is estimated in running meter. Items like strainer, sockets, bail plug etc
are estimated in number. Other costing
like transportation of materials, installation charge, labour charge etc are
estimated separately.
Estimation comprises of following particulars:
- Galvanized Iron (G.I.) Pipe with sockets
- Strainer for the pipe
- Hand pump (ordinary type)
- Additional components: bail plug and extra sockets
- Transportation of materials to work site
- Installation process: sinking/boring, inserting sand, fixing hand pump, creating concrete platform and drain, pumping out water
