Jan 25, 2025 · To install wood posts (pilings), stand the piling in the desired spot and use a water jet to clear away sand and silt so it sinks 4–6 ft (1.2–1.8 m) below the lakebed. To pour concrete posts, push a PVC pipe 2 ft (0.61 m) into the lakebed, then bail out the water and remove sand and silt with a post-hole digger.

Apr 14, 2005 · Re: Sinking Dock Pilings - DONE!!! Stiff, As fred says, you can jet them in. You probably do not need a 20 foot section of pipe, since you are likely not going to make them 20 foot down. Use a watersource with the most volume. A garden hose will work, but a big water pump will work faster/better.

A water jet to build a dock

Jan 24, 2023 · DIY dock post setting with high pressure water.

Oct 21, 2023 · To install wood posts or pilings for a dock, use a water jet to clear away sand and silt, causing the posts to sink 4-6 feet below the lakebed. For concrete posts, push a PVC pipe 2 feet into the lakebed, bail out the water, and remove sand and silt with a post-hole digger.

Dec 20, 2020 · Use gravity and water to sink your dock posts ( pilings ) 3 feet into the mud. Order a higher grade of exterior pressure treated wood from your lumberyard called “Critical Structure” – It’s a grade above “Ground Contact”.

Jul 21, 2017 · Jet the water out if you're building the dock in sand or silt. This is the easiest way to install posts for your dock if you're doing it yourself. Rent an industrial type of power washer to remove the sand or silt.

Install dock piling to stabilize a pier. The technique of installing a dock piling is known as jetting. 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.

Jul 30, 2006 · Aim the jet of water into the mud under the post you're trying to set. The post will sink into the bottom of the pond in less than a minute unless you hit old fallen tree limbs, rip rap or other junk.

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.