GNAT UK Delivering Intelligent Demolition Solutions
Gnat-UK
Methodology DSA Members Gnat UK were given 6 weeks to complete the job using a combination of track sawing and stitch drilling to remove the walls, floor and ceiling. The walls and ceilings were 350mm thick and the floor nearer 700mm thick! All were heavily reinforced, especially the floor which had in fact been designed to resist diamond drilling! One metre square blocks were cut out and then removed using a 3 phase electric Brokk 90 robot modif ied for lifting. The blocks were transported to another holding area with the Brokk, where they were drilled and hydraulically burst into manageable sized sections to assist removal from the tight conf ines of the basement area. A total of just under 150 cubic metres of concrete was removed. Hilti Track Saws and Drill Rigs were used for the sawing and drilling. These provided the high power needed for an arduous task such as this. A number of suppliers were used for the consumables but in general Hertfordshire Diamond provided the 900mm diameter saw blades and Golz the I07mm diameter drill bits. The job was completed successfully with 2 days to spare and that included a hold up following the discovery of asbestos on site, when work was suspended for a week whilst the Asbestos was removed The main structure of the building was carefully monitored throughout the work to ensure no movement or damage was caused.
The occupant of the off ice on the other side of the party wall, an ex Prime Minister, was blissfully unaware of what was occurring only a few metres away!
Section after isolation. Concrete and Re-bar cut cleanly... and quietly!
Gnat UK Ltd Scotland Off ice Unit 1, Mid Friarton King James Business Park Perth PH2 8EL tel 01748 826046 fax 01748 826056 e-mail off ice@gnatuk.com
Gnat UK Ltd Midlands Off ice Unit 7 Riverside Park East Service Road Raynesway Spondon Derby DE21 7RW tel 0844 840 4440 fax 01332 875836 e-mail off ice@gnatuk.com
Gnat UK Ltd Southern Off ice The Old Lordship Farm Walkern Road Bennington Hertfordshire SG2 7LL tel 0844 840 5550 fax 01748 826056 e-mail off ice@gnatuk.com
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