Tay Waste Water Project.

When Holemasters UK required Technical assistance for the Tay Waste Water Project, they called in UKdima. UKdima supplied the wire saw system and diamond wire along with on site support to bring the project in on time.

TIME IS CRITICAL ON WASTE WATER PROJECT

Reproduced from Concrete Cutter - Volume 2 Issue 3 (November 2001)

When time and accessibility are prime requirements in a renovation contract, concrete cutting using diamond drilling and sawing equipment comes into its own.

On a recent contract in connection with the Tay Waste Water project at the Riverside in Dundee, the DSA Member Holemasters UK Ltd of Bathgate in Scotland were given 10 days by the Bechtel/Morrison Joint Venture to complete work on a job where all the sequences were time related. This particular section of the work involved turning a dry well area into a wet wall sewage area with the minimum of disturbance to surrounding concrete structures.

The project consisted of the cutting and removal of heavily reinforced concrete plinths which were used to carry the substantial pumps which control the sewage flow. In all, 16 plinths up to 4 metres high were cut and removed involving a total of 163 tons of material.

All the plinths were predrilled with 100mm holes 1 metre deep in order that the cut plinths could be lifted. Then, using a UK Dima wire saw, Holemasters proceeded to cut the plinths in sequence in conjunction with a 100 ton crane. As each plinth was cut, the crane removed it through a 4 metre hatch in the wet well roof. The plinth could then be stacked ready for removal by low loader lorry.

Because of the unusual shape of the structure, the job earned the nick-name "Concretehenge". However, the work was completed in 7 days, which was well within the time allowed. The latest drilling and sawing techniques give us advantages which were not available to our predecessors when building Stonehenge.