Pile Reinforcing Cage Plunging

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The team have implemented a way of plunging the reinforcement for the bearing piles which significantly reduces the workload for the following trades and reduced waste steel being produced, along with making the works on site safer and quicker.

Traditionally pile reinforcement would be installed into the pile with the top of the reinforcement finishing level with the piling platform. The following groundworker would then need to ‘crop’ the pile down to its cut-off level. This requires breaking the concrete from the top of the pile down to depths of up to 5.0m on this project.

While breaking the concrete, the steel reinforcement in the pile would also need to be cut incrementally as the pile is broken down. By plunging the cage with the plunger to the required depth, the cage is therefore pushed down into the concrete to the correct design level.

This reduces dramatically the amount of the steel that has to be cut to get to cut-off level. On this project they saved approximately 8,200kg of reinforcing steel.

Footer Reference

Monitor Report. Ballymore Construction Services Ltd. London. December 2025.

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About this entry

Published 9 February 2026
Views 11

Categories
Carbon reduction, Conserve of resources,

Size of site
Very Large,

Level of Best Practice
Innovative,

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Jack Endean
Partnerships and Innovations Manager

Entries by this author 989

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