TECHNICAL - V12 Design Possibilities
Standard usage/laying length wise. (For standard usage one requires 12 blocks/m²)
All blocks same direction, large radius over large radius, right hand direction.
Offset, same direction, large radius over small radius.
All blocks same direction, large radius over large radius, left hand direction. 
Opposite direction, wave look.
Integrating a step using the V12 block: One can integrate a step in all of the above standard laying possibilities, by simply turning the V12 block 90° either with the horns into the embankment using the large radius as steps, or...
...the other way around, the large radius into the embankment and using the horns as steps. 
One is also able to incorporate the steps in an angle of max. 15° to the left or to the right, thus each row of the V12 blocks are automatically laid offset. 
Steps can also be built into a wall with the wall curved inside or outside.
If the blocks are laid in this way you increase your step area per row. 
Maximum laying angle for sharp corners are from 0° to 105° without loosing the meshing ability of the V12 block/wall and without having to cut the blocks. Drawing shows 105° outside corner.

Drawing shows 105° Inside corner.

For strenghtening a wall, should soil conditions require it and without loosing the symetric look of the wall, simply turn a V12 block 90° with the horns into the embankment at evenly spaced intervals in each row of the V12 blocks layed, thus the V12 block depth penetration into the soil is increased and can be anchored additionally either with steelrods, geofabrics or a cement key. 
If stronger anchorage is required one can turn more than one V12 block next to each other into the soil in each row, thus increasing the depth penetration by up to 200mm. In this instance one will obtain a wave at that area in the wall. 
The V12 block can very easily be laid accurately into sharp corners or curves around any obstical, like a tree, manhole, water meter etc. without cutting the blocks or losing the symetric look of the wall.

Each end of the wall can be finished in the same look by simply turning the second last block 90° with the horns into the soil.

Further corner details - a symmetrical wall can be built with two soft corners:
This can be done up to 18 courses or 4m in height by simply counting from the centre block to the corner block in the first course (in this example below, the third from the centre) and then turning the same block in every successive course (starting from the second course) by 3°. By the 18th course the corner block will have turned through 90°.

or two sharp right angled corners:

Other usages and advantages of the VF12 block. (For using the blocks as per the drawings one requires 16.7 blocks /m²)
If soil conditions require a larger block, the V12 block can be utilised by turning all the blocks 90°, with the horns facing into the embankment.

It is also possible to form inside and outside curves with this setting.

By turning the blocks alternatively, the one block with the horns into the embankment and the next one with the large radius into the embankment and so on, one obtains a lovely wave look over the whole area of the wall. The V12 block will not loose its locking ability. 
One can also offset the blocks for a different look.

Blocks layed can also turn corners and curves without having to cut the blocks.

The VF12 block can aslo be used for forming enclosures for protecting trees, shrubs etc. as planters and also to form reinforced columns by simply placing reinforced steel as required and fill with concrete to any height required.

See also below.

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