Prestressed Concrete Piles are a new generation of building piles that have been produced using Pre-stressed technology and are the best alternative to the Fendoleh concrete piles, chromite piles, steel piles and other roof systems, because in addition to being highly cost effective, these piles not in any way comparable to these systems in terms of quality and performance.
Prestressed concrete pile is a pre-stretched type of pile which is produced industrially. High strength cables (with strength about 4.5 times more than that of AIII rebar) are used instead of rebar and stretched using special powerful Jacks, after that the high strength concrete is pressed, finally after the concrete is set, the jacks are opened. The Tensile force on the cables will cause a negative deflection at mid-span of the piles and this negative deflection helps to increase the loading capacity. The Prestressed piles are installed just like chromite and Fendoleh piles.
The advantages of Prestressed piles:
These piles have the same advantages as the prestressed concretes plus the following specific ones:
High durability, deformation control and the elimination of cracks due to exertion of high pressure on the entire section.
Combination of steel and high strength concrete (minimum C35)
Up to 40% reduction in need for scaffolding underneath the piles
Continuous quality control (given the sensitivity of the production process) at the full-industrial production level using fully automatic machines, omission of manual concrete pouring and welding operation from the pile production process
Full test of pile sections before the loading process, due to exertion of high pressure on the entire sections of the pile by the stretched wires
Up to 40% Reduction in the use of in-situ ceiling concrete near the piles, because of the fact that the pile webs are concreted in the factory
Production of Piles under steam conditions so that they can reach the required strength quickly and adequately
Improved architecture conditions due to allowing for new designs with increased span, omission of columns, increased parkings and ...
