Making screw piles yourself with your own hands: Step-by-step instructions + Video

Screw piles. Making screw piles with your own hands is a very complex and time-consuming process that requires a high concentration of attention. Most experts do not recommend making them yourself, as they believe that for this you need to know all the technologies. But if you read this article carefully, you can make screw piles yourself.

The screw pile is similar to a propeller, it is an empty, metal flask.

It has a pointed end, with a cutting tool in the form of a spiral.

What does it consist of?

1. The barrel is made of a pipe, no more than 35 mm thick.
2. Lower part of the pile (shoe).
3. Tip.
4. Spiral, sharp tip.

   From its angle of inclination and technology depends on how it will enter the ground.

Thanks to the spiral tip, the pile will enter the subgrade to the depth you need. But on the reverse side, this blade will interfere with the fixation of the pile in the ground and will push it outward.

With this design, during the installation of the foundation base, it will allow you to work without additional, cargo tools.

Step-by-step manufacturing of screw piles with your own hands

When drawing up a structure, you can be guided by the plans of various manufacturers of screw piles.

This will help to very accurately reproduce the dimensions of the blade and keep seams to a minimum, as they make it difficult to work in the place where the joints occur. There are three completely different types of handpieces.

Tip from the base of the pipe

This product requires doubling the pipe length, since the first end of the product will be converted into a tip.

1. A triangular piece is cut out of cardboard material or pipe.
2. At the end of the pipe, we mark the sectors.

3. At the end of the pipe we make petals in the form of teeth.
4. We bend them into a conical shape, the upper part corresponds to the pile axis.
5. We fix by welding.

While marking, remember:
for a pipe with a diameter of 100-200 mm, it is most convenient to make five petals.
For 70-89, four is enough.

The result is a tapered lance, very convenient for welding helical blades.

Welded tip

For the foundation of small buildings, this option is most often used.

Manufacturing technology :

• the shape of the petal in the form of an expanded triangle, thickness 5 mm, made of steel or pipe.
• The location of the petals. They should be tightly pressed against each other.

  After that, processing takes place by welding, double seam along the edges.

Cruciform tip

Manufacturing technology:

• Triangular shape, rigid ribs, plate as a pipe plug.
• Assembly. A triangle and stiffeners are attached to the plug.Welded by welding.

• All joints are processed using a double seam

Blade manufacturing technology

The optimal pitch of the blade spiral is 70-80 mm. The spiral starts from the third part of the pipe from the bottom.

Here are two examples for making blades:

1. Single-start solid - cut the sheet according to the drawing, spread the spirals with a mount to the desired step distance. In this option, it will not be possible to make several passes of the pile. But this method has excellent rigidity and uniform geometry.

2. Prefabricated - consists of several blanks. First, the circle is covered, after this peak, and at the end the pile itself. This option can be used many times. But you are unlikely to keep the original appearance of the spiral.

Protection against corrosion

For a more durable operation of screw piles, it is necessary to cover with some kind of anti-corrosion agent.

During each year, pipes can lose up to 1 millimeter in thickness due to rust.

Self-installation

Screwing the pile into the ground can be done independently. The most common device for this is a metal pipe, previously inserted into the hinges. They are made of 10 mm diameter reinforcement. This pipe is pushed, resembling a lever, thereby screwing the pile into the ground.

Sequence of actions :

• Marking of piles on the territory, according to the rules for calculating the foundation. The distance between the piles is not more than three, but not less than two meters.
• All pipes are installed strictly vertically, with the tip with a spiral directed downward.
• We insert a special crowbar into the hinges, and use the lever method to screw it into the ground. The minimum depth is 1.

  5 meters.

• If the soil is clayey, we screw the soft to the last until the pile rests on a hard surface.