Description
A coarse aggregate graded between approximately 4mm and 20mm, with fines removed to maintain void space and drainage.
A coarse aggregate graded between approximately 4mm and 20mm, with fines removed to maintain void space and drainage.
Drainage layers, pipe surrounds, permeable sub-bases, concrete and general construction.
Exact grading and permitted oversize/undersize are set by the supplier's declaration and project specification.