Maxibloc Temporary Higher Vertical Concrete Barriers (THVCB) | Hardstaff Traffic Barrier Services | Hardstaff Traffic Barrier Services

Maxibloc Temporary Higher Vertical Concrete Barriers (THVCB)

Maxibloc THVCB provide H4a (Very High Containment) protection and are designed to deflect heavy goods vehicles from temporary and permanent bridge supports, other vulnerable structures and amongst other uses, provide effective temporary parapet protection.

Installation

Intermediate barriers (V50) 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.

Transition units are handed, being specific to Verge Applications (V51A and V54A) or Central Reserve Applications (V51B and V54B).

The units are connected together at the scarf joint, using M24 diameter high-tensile steel bolts and 30mm-thick galvanised steel plates which bolt across the joint.

Units are installed in one of two layouts: either Recessed or Surface-Mounted.

Containment Levels

System	Recessed	Surface-mounted
Containment Level	H4a	H4a
Test Vehicle	30T Rigid Lorry	30T Rigid Lorry
Test Speed	67kph/42mph	67kph/42mph
Test Designation	TB71	TB71
Test Deflection	175mm	650mm
Test Designation	W2	W6

Maxibloc Surface-Mounted Installation

A Maxibloc Surface-Mounted THVCB application provides a containment level of H4a and a working width of 1.81m (W6). The system is installed free-standing on the carriageway surface and the containment is achieved by installing a double thickness wall of intermediate barriers (V50) with staggered joints.

General Layout of Maxibloc Surface-Mounted

	Intermediate (V50)	Transition (V51A/V51/B
Height (Effective)	1400mm	1400mm-800mm
Width	450mm	450mm
Modular Length	3000mm	3000mm
Overall Length	3150mm	3150mm
Weight	4500kg (approx)	3600kg (approx)

Maxibloc – Recessed Installation

A Maxibloc Recessed THVCB installation provides a containment level of H4a and a working width of 625mm (W2). The intermediate (V50) concrete barriers are installed in a 200mm deep trench formed in the carriageway surface and the trench back-filled with concrete.

General Layout of Maxibloc Recessed

	Intermediate (V50)	Transition (V51A/V51/B
Height  (Effective)	1200mm	1200mm-800mm
Width	450mm	450mm
Modular Length	3000mm	3000mm
Overall Length	3150mm	3150mm
Weight	4500kg (approx)	3200kg (approx)