Strength By Design
Terra Firma E400 Thrubeam Range
High structural performance
Structurally and fatigue tested. Meets AS3996 E400, AASHTO and European EN 124 D400 regulations.
Extended working life
Composite covers continue to perform well after 20 years in service. Will not break or spin out. The torsional resistant frames eliminate many of the usual causes of wear with traditional covers.
Exceeds 0.60 co-efficient of friction even when wet and will retain this anti-slip value throughout its working life.
Secure and lockable
Additional security may be included through a bolting system that automatically disengages when the cover is removed and reengages when replaced. High security key option is available.
Injury free removal
Single person removal and replacement without risk of injury. No need for any additional lifting equipment.
Reduced maintenance programmes
Longevity, ease of moving and superior performance reduces maintenance programs. Fitting a Terra Firma cover is the best ‘whole life’ choice.
100 percent watertight/sand tight with an unique self cleaning edge seal.
Covers can be vented which helps prevent the build up of explosive gases. Holes conform to ADA regulations.
Transparent to radio waves
Negates the lifting of covers and helps promote better signals being transmitted.
Will not corrode when in contact with other materials. Unaffected by sand, salt and all chemicals met in road environments.
Will not conduct electricity, so stray voltage problems are negated.
Client design service
Terra Firma project managed bespoke design services will use our patented technology to design alternative size and shape solutions to meet customer requirements.