Multibloc Temporary Vertical Concrete Barriers (TVCB)
Multibloc TVCB provide two levels of containment:
- Multibloc 80 gives a Performance Class of N1 with a Working Width of W3
- Multibloc 110 gives a Performance Class of N2, again with a Working Width of W3.
They are both designed to deflect an errant vehicle away from –
'local hazards within or immediately adjacent to the highway, which have the potential to cause danger to: the occupants of an errant vehicle, the workforce, or others...'
(TD19-2006, Chapter 8)
As the name suggests, they have a multitude of other uses and applications, effectively providing -
- A safe working area - protecting the workforce from vehicles travelling next to the site
- Protection for the travelling public from roadside and site hazards
- A safe and effective separation between opposing traffic streams in contraflows, by preventing 'crossover' accidents, whilst maximising available carriageway width due to low deflections
- Prevention for unauthorised vehicular access to site compounds, forecourts, car parks, fields or other property
- A temporary flood defence or water-retaining structure (when used with other items)
- Temporary aggregate bays or other storage areas
- A security barrier for protection against vehicle-borne attacks, ram-raiders etc
- Counter-weights or kentledge for scaffolding, suspended shuttering, piling rigs etc;
- Direction and protection for pedestrians or light vehicles in quarries, airports or other industrial, commercial or public areas
- In conjunction with Hardstaff Multifence - a high-security, easily-moved temporary perimeter fence
Installation
Intermediate barriers (V28) are symmetrical in cross-section and by turning them upside down (as
shown below ) can be used for either verge or central reserve applications. Barriers should be aligned according to the direction of the traffic flow, using the directional arrow cast in the face for orientation.
End taper units are handed, being specific to Verge Applications (V29) or Central Reserve Applications (V30).
The units are connected together at the scarf joint, using M24 diameter high-tensile steel bolts and, for Multibloc 110, 20mm-thick galvanised steel plates which bolt across the joint.
|
|
Intermediate (V28) |
Termination (V29 or V30) |
|
Height |
800mm |
150mm-800mm |
|
Width |
450mm |
450mm |
|
Modular Length |
3000mm |
3000mm |
|
Overall Length |
3150mm |
3075mm |
|
Weight |
2500kg (approx) |
1600kg (approx) |
Containment Levels
|
|
Containment Level |
Test Vehicle |
Test Speed |
Angle |
Test Deflection |
Working Width |
|
Multibloc 80 |
N1 |
1.5T Car |
80kph/50mph |
20deg |
360mm |
W3 |
|
Multibloc 110 |
N2 |
1.5T Car |
112kph/70mph |
20deg |
390mm |
W3 |
