PILING
INFORMATION
Extensions
When any of the following
occur:
•
The excavation for an
extension’s
foundations
approaches the water
table
•
The excavation for an
extension’s foundations
approaches 2.5 metres in depth
•
The foundation trench is collapsing
•
Excavations are undermining adjacent
structures
Then piling will probably be a more economical
method of providing foundation than trench fill or
under-building. Piles can be concrete, steel, and
sometimes wooden columns, which carry all the
weight of a building down through poor materials
onto good ground.
All piling work is carried out above ground level
and generally requires little or no preparation
prior to the arrival of the rig on site.
Advantages of the driven piling method we use for
pile installation include:
•
No spoil production and hence no material to
remove from the site
•
We use no wet materials; hence it is a clean
operation, no need for wet concrete and the
associates spillages
•
All our piling machines are much smaller than
conventional machines, enabling us to both:
1.
Pile very close to and inside buildings, and
2.
Travel over lawns and gardens with minimum
disturbance. (If lawns are not to be
landscaped after construction, we can work on
plywood sheets)
For economy, piles are normally less than 6 metres
apart. If the existing foundation of the house is
suitable, conservatories or extensions can be
supported between the existing walls and 2 or
more piles. Often to minimise disturbance to the
existing structure the extension will be wholly
sitting on new piles, with some driven close to the
wall rather than put extra load on the existing
foundations.
The ground beams that then span between the
piles are like ordinary foundations, but with steel
reinforcement.
© Precast Foundations (Piling) 2018
PRECAST
FOUNDATIONS
(PILING)