The D-marc™ demarcation system is a free-standing barrier system designed to delineate a safe route across a roof surface. The base is formed from recycled car tyres, the lattice shaped upright is stainless steel (grade 304) and is powder coated a distinctive and highly visible orange. The chain is supplied in 25 m bags and is also a distinctive and highly visible black and orange.

Features and benefits:

For roof slopes up to 10 degrees.
Highlights a safe route.
Visible colours.
Multiple lengths of 25 m chain can be joint as required.
Wind tunnel tested to with stand a wind speed of up to 105 mph in accordance with the requirements of BS 6399-1.
D-marc™ is classed as a form of collective protection in accordance with the HSE's hierarchy of risk management as set out within the working at height regulations 2005 (WAHR).

Components:

Base: a 16.8 kg recycled rubber non-penetrative base.
Upright: 950 mm-high trapezoidal construction, manufactured from 304 stainless steel with an orange powder-coated finish.
Chain: 25 m bag of orange and black polyethylene chain.
Connector link – split link used to join lengths of chain.

MIRA Wind Tunnel Test report D-marc 105