CIVIL WORKS
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CIVIL WORKS System Platon Membrane for tunnels and underground construction Drainage Protection Waterproofing

CIVIL WORKS The Isola history – quality through innovation C O N T E N T Air Gap Technology and its draining capability The Isola History Air Gap Technology Product development is a major aspect of our activity. A company-wide commitment to manufacturing technology, raw materials and building techniques gives us great opportunity to continuously improve our products to meet and often drive the industry requirements. System Platon as waterproofing and drainage 3 Consepts and systems Drained and Waterproof tunnel construction Drained and Waterproof tunnel construction Other applications The...

CIVIL WORKS Drained and Waterproof tunnel construction Alternative In conventional drill and blast or roadheader excavated tunnels, the Platon Tunnel Membrane creates a drainage layer on top of the initial support or smoothing layer shotcrete before casting the final concrete liner. This is an alternative to the traditional geotextile and flat flexible waterproofing membrane solution. The drained water is collected in the drain along the edges of the foundation. Build up 1. Tunnel surface 2. Platon Tunnel Membrane 3. Concrete lining Installation / details System Platon Tunnel Membrane...

CIVIL WORKS Drained and Waterproof tunnel construction In both TBM and drill and blast tunnels it may be preferable to use a flat waterproof liner with a drainage layer between the rock or concrete surface and the waterproofing liner. Platon Tunnel Membrane maintains a drainage capacity and also protects the flexible liner from rough rock or schotcrete surface. Installation The Tunnel Membrane is mechanically fixed to the tunnel surface, where the fixings include a roundel to which the waterproofing membrane can be fixed. The Platon Membrane can have flat flanges on both sides for seam...

CIVIL WORKS Tanked tunnel construction Other applications A protective layer which can be injected into Platon as a drainage layer – the “Umbrella Solution” In low cost tunnels and access roads in mines etc, a layer of Platon Tunnel Membrane will divert water to the drainage channels along the tunnel invert or floor. Overlaps can be sealed if needed. 1. Untreated rock or shotcrete 2. Platon Tunnel Membrane 3. Drainage collection system Platon Tunnel Membrane protects the waterproofing membrane against damage. Waterstop is welded to the waterproofing membrane, creating sections at the length...

CIVIL WORKS Platon P20 – for increased Drainage Capacity The drainage capacity of Platon P 20 is many times higher than that of Platon Tunnel Membrane, providing even more security. Thanks to the volume of the air gap, 14 l/m2, P20 offers high drainage capacity to deal with higher volume or even extreme volume water ingress. Build up 1. Tunnel wall surface 2. Platon P20 3. Platon Tunnel Membrane 4. Waterproof flexible membrane 5. Concrete liner Platon P20 will create a space for grouting beneath the foundation segment and allow a good flow of grout. The water drained from the air-gap of P20...

CIVIL WORKS System Components • Platon Tunnel Membrane Fixing and sealing options: • Platon Rock Plug • Platon Brick Plug • Platon Gunned-ln Nail with Plug • Platon Punch • Platon Sealing Rope • Seam welding equipment as needed E-mail: isola@isola.no www.isola.com Dry and healthy buildings