Prestressed 'L' blocs are freestanding wall units, offering an ideal design solution for security as well as the retention / storage of soils, aggregates, silage, grain etc. Standard wall units are produced up to 3.65m in height. All units are designed to accommodate loading from either side of the wall.

The prestressed concrete stem provides the advantage of a much lighter unit than a conventionally reinforced one with the added benefits of reduced transport and installation costs.

The units require a suitable concrete foundation that has been designed by a qualified Engineer to ensure ground bearing and stability requirements are met. Units are then lined and levelled and bolted down through the preformed holes in the base using resin anchors.

A unique tongue and groove joint down each side prevents misalignment of the walls either during installation or due to uneven loading. It also provides an ideal joint detail for sealing should a watertight wall be required.

Advantages of Lbloc precast concrete walls :

• Quick and Easy Installation – L-Bloc's unique tongue and groove, together with our lifting attachment allows for fast and easy alignment and placing of the blocks.
• Pre-stressed and interlocking – L-Bloc's pres-stressed manufacture and interlocking capability results in a more robust wall. When used in conjunction with a suitable sealant, a watertight fit can be achieved.
• Double Loading (no reverse heel) – Can be loaded from either or both sides (toe in or toe out). No reverse heel means less obstructions.
• Wide units – New 2m wide unit offered.
• Efficient delivery – Lighter weight units and nested delivery results in easier off-loading without the use of a crane. Our units are up to 35% lighter than most other L-Shape units. 27m of wall can be delivered on one 30ton load.
• Unique Tongue and groove locking – this results in accurate installation with stronger joints. Graduated curves can be created.
• Corner sections available.
  

Rocla's new products offer the ultimate product for this application, coupled with quality controlled manufacture, quick and easy installation and saving in materials due to high strength concrete and precasting technologies and efficiencies.

Currently these type of fences/walls are constructed using steel fencing, brickwork or in-situ concrete. Either which way, these are all either partially or entirely constructed on site. This, unfortunately, brings with it all the problems normally associated with site manufacture :

• Are the correct quantities of materials being used ?
• Site conditions never come close to ideal curing conditions. .
• General poor quality workmanship on site due to insufficient skills and/or supervision.
• Normal long time frames with delays caused by weather, labour, materials, etc.