|
Large elemental surfacing blocks
Precast concrete blocks with a pattern of voids intended for filling
with soil, which allow for the growth of grass (grass concrete), laid
on a recommended sub-base. These may remain relatively free-draining
provided trafficking does not compact the earth fill within the void
spaces. Typical uses are for low cost, temporary or occasional usage
roadways and parking areas where vehicular loading is generally light
and where the appearance of a grassed surface is seen as environmentally
desirable, such as car parks, tram routes and fire access routes. |
|
Small elemental surfacing blocks
Precast concrete blocks with a pattern of indentations along their
edges intended to be filled with sharp sand/gravel, laid on a recommended
sub-base, which should be single size crushed rock or other open-textured
support. This remains free-draining provided surface maintenance limits
the deposit of debris in the indentations and joints between blocks.
Typical uses are for office and shopping centre car parks. |