Also known as Slab Sawing it is the most commonly used diamond sawing method deployed on horizontal surfaces such as pavements, concrete floors and bridge decks
The procedure - usually a one-man operation, can be used to form Crack Inducing Joints, where a section of slab has been damaged and also for isolating slabs prior to demolition or to form openings in slabs for services or stairwells
The most frequent tasks for slab sawing include the creation of control and expansion joints and cutting and removing damaged or cracked surfaces prior to repair.
It is also commonly deployed in creating channels prior to the installation of new utilities or creating space for implementation of new stairwells or lift shafts.
Call us for advice on the best approach to tackle your specific project - Slab Sawing, Wire Sawing, or Concrete Cutting, we have the expertise and the plant
The Diamond Drilling Project shown here involved the removal of an existing road bridge spanning the Sincil Dyke Drain - part of a refurbishment project of the new East West Road Link in Lincoln.
Gnat Uk Ltd were consulted to formulate an acceptable deconstruction method which took into consideration, the sensitivity of the waterway and environment, with the provisor that no debris was permitted to fall into the waterway.
Gnat were sub contracted to carry out all the diamond core drilling and saw cutting of the 280mm slab. This involved drilling 150mm core holes through the slab at predetermined locations to allow the lifting chains to pass through. Gnat operatives then Saw Cut the bridge into sections to enable the crane to lift and set down in the designated area. This process was repeated until all sections were successfully released and lifted.
A crane with a 220 tonne capacity was to be used to lift the sections from the abutment walls, due to the lifting radius the section were to be cut into 6 sections and pontoon was set up below the bridge to allow access to the underside to cut the steel beam and sling the lifting chains.
Following on from the bridge demolition the main contractor, Balfour Beatty then constructed the new bridge.
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