Use of fliter pipes during bore well rigging
Post
by palmut » March 29th, , 8:42 pm
For more information, please visit SINCO.
All,
Recently heard quite a few incidents from my friends where in filter pipes are being used along with MS Casing and the regular PVC pipes during bore well rigging. Bore well guys attribute it to silt in the well or the lack of hard rock. Us not being in this business, it is very difficult to figure out whether it actually a true statement or not. Since, we were told that the silt or loose soil will cover the well, we always will go for the filter pipe for the entire bore well depth, which doubles the total cost. Just wondering whether any one had any such experience and are filter pipes really required in Bangalore.
I'm about to dig a bore well and wanted to hear the opinion of the fellow members here.
Thanks
Re: Use of fliter pipes during bore well rigging
Post
by Virtual-world » April 3rd, , 12:45 am
I also got bore drilled last week and the borewell person told that there are soft portions at 2-3 locations and filter pipes were recommended.They try to scare and insist on them. They tell that it will cost @ 150?ft, so the pipe alone will cost equal to the cost of borewell. So i refused and after 8 days got the borewell inspected using a camera, the water was still muddy so I am also in dilemma, as I do not spend so much for pipes+pump etc.but there was no loose soil in the visible portions. So I may go for a compressor pump to avoid the submersible pump getting jammed.
Re: Use of fliter pipes during bore well rigging
Post
by m3_07 » April 3rd, , 11:26 am
The muddy content in the water goes away only after a 15 day minimum usage - on a regular basis. Please do not expect the bore to deliver "evian" grade mineral water on Day 1 !!
Re: Use of fliter pipes during bore well rigging
Post
by ardesarchitects » April 3rd, , 7:28 pm
For more information, please visit Water Well UPVC Filter Pipe.
Hi
using filter pipes can only be decided by observing the soil while bore drilling.In general silt will look like almost sand.In a very recent case of my apartment project they drilled till 850 and found silt at 500' till 850' after 5 days they checked with camera for installation of filter pipes and realized that bore collapsed till 500'.Now if they need to re-bore will cost them more than actual.So take decision as soon as possible by camera inspection or observe while drilling.
It is recommended to use filter pipes if the soil is loose as you may loose your pump stuck in the bore if it collapses later .Since the pump vibrates a lot deep in the earth crust you cannot anticipate.
Regards
Ar.Praveen.N
Ardes Architects and Interior Designers
Re: Use of fliter pipes during bore well rigging
Post
by palmut » April 6th, , 3:37 pm
Praveen - you are right. I did the drilling and was asked to go for filter pipes. Couldn't make out whether there was silt/loose soil but didn't want to take the risk and went for the filter pipes.
Re: Use of fliter pipes during bore well rigging
Post
by Virtual-world » April 7th, , 9:44 am
The cost of filter pipes is prohibitively expensive almost equal to bore cost. And most of the bore drillers they scare you about silt.In my case from 20' onwards to 650 ft it was stone only at 150 ft and 440 ft during bore drilling he was telling that loose soil is there.So what is the exact criterians for filter pipe necessity? The filter pipes can be independently purchased from dealers.
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