Advanced Construction Technology

By Professor Chris Gorse & Ian Dickinson – licensed under the Creative Commons Attribution – Non-Commercial – Share Alike License

http://creativecommons.org/licenses/by-nc-sa/2.5/

Pile Foundations

Professor Chris Gorse and Ian Dickinson

These slides should be read in conjunction with Emmitt, S. and Gorse, C. (2010) Barry’s Advanced Construction of Buildings. Oxford, Blackwell Publishing

Pile foundations

Pile foundations.

The pile foundation takes the load of the building through made-up ground or weak soil to load bearing strata. Ground beams transfer the building loads to the piles.

Piles

Ground beam

Precast driven concrete piles

Pile foundations.

Columns of concrete driven into the ground by a percussion hammer

Cable percussive auger. Piles can be bored to considerable depths

Auger bored piles

Pile foundations.

Threaded cutting rigs cut through the ground boring a hole (column) which is replaced with concrete or reinforced concrete.

Steel piles inserted – where ground beam reinforcement is positioned the steel piles have been trimmed so that they sit below

the beam

Piles

Ground beams

Reinforcement used to create ground beams to span between piles and carry the building loads.

This ground beam is sitting on top of piles.

Cardboard formwork used to contain the concrete within the ground beam and prevent excessive use of concrete. Concrete outside the designed foundation

area would be wasted and add additional weight to the building.

Partially complete ground beam spanning onto pile cap

Ground beam

Steel reinforcement cage for ground beam

Excavation for pile cap or pad foundation