Building a pier on screw piles significantly simplifies and speeds up installation, and also increases the structural reliability. To ensure the pier lasts for many years without requiring repairs every few seasons, it's important to carefully design the structure, prepare materials, and carry out installation work.
Site Preparation
Before
installation, preparatory work is necessary: clear the area of vegetation
and debris, conduct a geodetic survey of the site, and determine the
groundwater level. During winter installation, special attention should be paid
to clearing ice and snow from the site.
It's
necessary to measure the depth of the water body near the shoreline where the
pier will be installed. This is necessary to calculate the pile length and
determine the height of the pier's above-water portion.
Pile Installation
Installation
of screw piles for piers is usually carried out in winter. The piles are driven
into the ground at pre-marked points. The distance between them should be 1.5
to 2.5 meters. If the pile spacing is greater, individual sections of the pier
will settle and deform, affecting the strength and geometry of the structure.
For pier or
dock installation, piles with a reinforced anti-corrosion coating must be used.
Concreting
Screw piles
are filled with concrete or a dry mix to prevent corrosion from the inside.
Temperature fluctuations cause condensation, which leads to oxidation of the
metal and the destruction of the pile. To prevent this, oxygen must be removed
from the pile cavity, so it is filled with concrete and dry cement.
Frame Installation
The frame
is installed by tying together a pile field made of metal channels, angles, and
profile pipes. After tying, all welded seams are painted to protect against
corrosion and maintain a neat appearance.
Facing
The decking
is made of decking boards treated with special impregnations to protect against
rot, mold, and insect pests. Pine boards are commonly used, as they are the most
resistant to aggressive aquatic environments.
What time of year should pier piles be
installed?
Winter is
the most convenient time to install a pier or dock, when the surface of the
water is covered with ice. Pile installation can be done manually; the installation
technique is little different from installing piles for land-based structures.
Furthermore,
during the winter, demand for construction work on water typically decreases,
which can reduce costs and expedite the process of obtaining the necessary
permits and approvals.
Summer
installation of piers on screw piles is typically performed using watercraft,
such as barges, pontoons, and specialized equipment for installing piles from
the shoreline.
Summer
installation is generally more popular due to favorable weather conditions,
ease of use of watercraft, and the availability of materials and equipment.
However, in some cases, winter installation can also be effective and even
preferable.
In
conclusion, building a pier on screw piles is a reliable and efficient method
for creating a stable foundation on water. Due to the possibility of
installation in both summer and winter, this method can be used in various
climatic conditions and ensure a high degree of reliability and durability of
the structure.
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