Versco LTD - Vehicle Restraint Systems.

NPSBSSYSTEMS(LEGACY)

ISO9001:2015 certified to National Highway Sector Scheme 10A for manufacture and 10B for the supply, installation, maintenance and repair of road restraint systems including legacy systems. Historically safety fence legacy systems were referred to as non-proprietary safety barrier systems (NPSBS) and include tensioned corrugated beam (TCB) and open box beam (OBB) systems commonly encountered on the Strategic Road Network and Local Authority infrastructure.

The National Highways List of EN1317 compliant Road Restraint Systems was produced to provide a comprehensive reference document containing information for designers and specifiers on all available road restraint products offered to the UK market. The latest issue was published in March 2016. NPSBS 'legacy' systems are referenced in this document, which VeRSco currently manufacture for use on the UK network including:

Single sided and double sided open box beam systems
Single sided and double sided tensioned corrugated beam systems
Double rail open box beam
Single sided single rail GA/72 transitions into concrete structures
Double sided single rail GA/74 transitions into concrete structures
Single sided double rail GA/85 transitions into concrete structures
Terminals for tensioned corrugated and open box beam systems

NPSBS General Arrangement Drawings

Click here to download GA drawings for Non-proprietary safety barrier systems TCB, OBB, RHS, VCB and HVCB.

These are provided for reference and information only.

Tensioned Corrugated Beam

(TCB)

Tensioned Corrugated Beam (TCB) remains the most common type of road restraint system, providing vehicular containment in verges and central reserves over the majority Strategic Road and Local Authority Network.

The system consists of A-Profile ('W' section) corrugated beam 3mm thick attached to 'Z' section posts via M8 setscrews. The setscrews were selected for their low shear resistance, allowing the post to fall away from the beam providing increased yield and deflection upon impact for a 'softer' restraint.

The system is constructed with tensioner arrangements at regular intervals and between anchorage points to allow the beams to be tensioned as prescribed in BS7669-3.

VeRSco have since undertaken research into the effect of tensioning via full-scale dynamic testing in accordance with EN1317-2, and it has been found to be ineffective in increasing system performance, which greatly reduces maintenance on-going requirements if this principal is adopted. Please contact us for any further information required.

Available in both single sided and double sided configurations and at both 1.6m and 3.2m centres depending upon the working width required.

Open Box Beam (OBB)

Open Box Beam (OBB) was historically specified in verges and central reserves where deflection space was limited.

OBB systems provide N2 containment level and due to the systems rigid strike beam profile, it was proven to deflect to a lesser extent upon impact then the alternative Tensioned Corrugated Beam Systems.

The OBB systems consist of a trapezoidal section beam, 5mm thick, adjoined by splice plates (known as fishplates) of the same profile and material. A series of welded 'stiffeners' provides additional rigidity to rear open profile.

The open profile receives a 'clamp plate', which is holed to receive an M10 post fixing, which in turn allows the beam to be affixed to the common 'Z' section post also used for Tensioned Corrugated Beam Systems.

Available in both single sided and double sided configurations with posts pitched at 1.2m and 2.4m centres depending upon the working width required.