Quadracurve™

by mDesign | Jan 13, 2018

Quadracurve™ TWRM Extension Brixton to Honor Oak (2008) The patented Quadracurve™ ‘one size fits all’ precast lining system allows construction of non-circular tunnels and shafts to optimise the available space. Manufactured from a single form, Quadracurve™ lining...

Waterproof Sprayable Membrane

by mDesign | Jan 12, 2018

First 100 Percent Waterproof Sprayable Membrane Safe for Underground Use TWRM Extension Brixton to Honor Oak (2007 – 2011) The waterproofing of sprayed concrete tunnel linings has traditionally been carried out using sheet membranes encased between the sprayed...

Single Pass Lining System

by mDesign | Jan 11, 2018

Single Pass Lining System for Hydraulic TunnelsTWRM Extension Brixton to Honor Oak (2007 – 2011) A high integrity single pass segmental lining was developed incorporating a double EPDM gasket for outstanding watertightness. The lining did not rely upon any bolts or...

Zero Impact Aquifer Tunnelling Method

by mDesign | Jan 9, 2018

Zero Impact Aquifer Tunnelling Method Croydon Cable Tunnel (2005 – 2010) Development of a chemically inert one-pass tunnelling system suitable for use in the most sensitive aquifers used for public water...

LaserShell™

by mDesign | Jan 8, 2018

LaserShell™ Heathrow Terminal 5 Tunnels (2002 – 2006) LaserShell™ enables real-time and remote construction of any underground space through use of a specialist geospatial survey system, TunnelBeamer™, in conjunction with a high-quality steel fibre reinforced sprayed...