The first
step in choosing piles is a geological survey to determine the soil type on the
site. If the foundation is installed incorrectly, clayey soils will push out
the supports during frost heave. Piles must be anchored in dense soil layers
below the frost line.
The
groundwater table also affects the length and diameter of the piles. A high
groundwater table will cause the soil to become unstable, and the piles will
sink under the weight of the terrace.
We'll
explain in which cases and which types of screw piles are suitable for
installing a terrace foundation.
Wooden Piles
For
installation, a hole is prepared and the support is inserted, and the remaining
space is filled with a sand and gravel mixture. It is recommended to choose
posts made of coniferous wood, which is more moisture-resistant. Additionally,
the posts can be treated with a preservative to protect against rot, mold, and
pests.
If
impregnation is unavailable, folk remedies can be used. For example, burning or
coating with used oil. However, despite treatment, wooden supports fail quite
quickly and eventually require replacement of individual supports or the entire
foundation.
Pillar-and-column foundation types
Brick and
block supports are used only as temporary foundations. The buoyant forces of
the soil deform and shift the foundation, requiring constant maintenance.
Therefore, such foundations are not recommended for terraces around a house.
Screw piles
Metal screw
piles provide a more durable foundation. Screw piles with diameters of 57 and
76 mm are used for lightweight structures such as terraces, gazebos, or
bathhouses. The depth of penetration is determined by the soil characteristics
and the depth of frost penetration. The foundation is secured with wooden beams
or metal channels. All elements are coated with anti-corrosion compounds to
protect against corrosion. Our company's products are powder-coated in
high-temperature ovens. The highly durable polymer coating does not wear off
during pile driving and does not peel off when exposed to water.
Screw pile
installation does not require additional excavation or soil leveling. This
allows the foundation to be installed in just one day.
Advantages
of screw piles:
•
Installation speed. Preparing a screw pile foundation for a terrace around a
house takes just one day.
• No
excavation work is required. After installation, there is no excavation or
debris left on the site.
•
Installation can be done in winter. There is no need to postpone terrace
installation until summer, when building materials become more expensive.
• The
foundation does not settle, preventing shifting or collapse on unstable soil
types.
When
choosing piles for a terrace around a house, it is necessary to consider many
factors, such as soil type, material, pile diameter, foundation load, and more.
Proper calculation and selection of the foundation will allow you to create a
durable and reliable terrace where you can enjoy a pleasant view and spend time
with loved ones.
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