The top of the tee had a screw on cap.
Jetting in pvc dock pilings.
Unscrew the cap slide 4x4 down in side the pvc.
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The technique of installing a dock piling is known as jetting.
The pump hose was connected to a length of 6 pvc pipe with a tee.
If you want to build a pier or a dock you need good sturdy pilings or posts to support it.
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I ve never used that method to set pilings in water doc but i ve drilled a small hole in a cap on the end of pvc with a hose fitting on the other end to jet a pipe under a concrete drive about 20.
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You will need at least two people to complete this task and this article only deals with repairing a piling in an existing dock where the soil below.
I will take a piece of 8 pvc pipe and place a couple blocks of wood on top and hammer it in to the pond floor with a sledge hammer.
Jetting is better for sandy soil while concrete is more stable for muddy beds.
The process involves using a high power water pressure hose to literally dig a hole out of the soil that you can sink a piling into.
I helped a follow worker put dock post in using a portable 6 hp water pump.
Installing posts or piling in the water to support a dock or pier can be done either by jetting with water or driving with a pile driver if the earth under the water is not too rocky yet is solid enough to be load bearing.
I have an existing dock that has seen its better days and i want to build a new dock in its place.
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Connect the pump to the side part of the tee.
Wash the hole down as deep as you need it.
It should work ok if you have enough water volume.
Pull the pvc.
Because driving pilings requires heavy equipment this article will focus on jetting them.
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