Rigid Restraint Systems

Concrete Barriers offer a rigid, virtually maintenance free and cost effective road restraint system for use on all roads, in particular trunk roads and motorways and at high risk locations such as parallel incursion railway sites. Using the extruded method high levels of productivity are possible for a wide variety of applications.

 

 

A recent review has been carried out comparing the performance and maintenance of concrete barriers with steel barriers in the central reserve. The evidence indicates that where the AADT exceeds 25,000 veh/day there are significant benefits from a maintenance viewpoint in using rigid concrete rather
than deformable steel barriers on busy motorways and dual carriageways. These benefi ts include signifi cant health and safety benefi ts for road maintenance and traffi c management operatives, as fewer safety barrier repair and maintenance operations are required.

Taking into account the Whole Life Cost and benefi ts of all safety barriers in the central reserve, the evidence supports the use of concrete barriers on motorways but the benefi ts obtained can equally apply to busy all-purpose dual carriageways. It is now a requirement for new installations of safety barriers in the central reserve to be Rigid Concrete Safety Barrier with a Containment Performance Class H2 and a Working Width Class W2 and shall be designed to achieve an essentially maintenance free serviceable life of not less than 50 years. Where lighting columns are to be mounted on top of the safety barrier the Working Width shall be increased to a minimum of W3 to reflect the
additional width of barrier required to accommodate the columns and its fixings.

A series of datasheets on the new concrete step barrier are available covering details such as:
• Selection of profile
• Working width and setback
• Standard profile
• Foundation and restraint
• Variable profile
• Dual CSB
• Bifurcation and tapers
• Lighting columns
• Gantry bases and bridge piers

Please contact HBS for further details.

Concrete Barrier Specification For Normal And Higher Containment
Profile
Containment
Working Width
Impact Severity Level
CSB
N2
W1
B
CSB
H2
W2
B
WCSB
H2
W3
B
VCSB
H2
W2
B
WVCSB
H2
W3
B
HVCSB
H4a
W4
B
 

Abbreviations

 

VCSB -

Variable Concrete Step Barrier

CSB -

Concrete Step Barrier

WVSCB -

Wide Variable Step Barrier

WCSB -

Wide Concrete Step Barrier

HVCSB -

High Vertical Concrete Step Barrier

 

 

 

 

 

Click here to see Rigid Restraint Systems in development and Operation - Projects>> Sydenham By-Pass Scheme

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