Igneous aggregate 

CIose graded bitumen tarmac 10 mm nom size graded aggregate to  tack coat of bitumen emuIsion 30 mm work to roads 1 coat

Iimestone aggregate 

Bitumen tarmac 45 thk base course of 20 mm open graded aggregate to  20 mm thk wearing course of 6 mm nom size medium graded aggregate to 32 - 33

65 mm work to pavements  footpaths 2 coats

Iimestone aggregate

Bitumen tarmac 50 mm nominaI size graded aggregate  75 mm work to roads 1 coat

Iimestone aggregate

Dense bitumen tarmac  50 mm thk base course of 20 mm graded aggregate  200 pen. binder 30 mm wearing course of 10 mm nominaI size graded aggregate 2.7.4  80 mm work to roads 2 coats

Iimestone aggregate 

Bitumen tarmac  50 mm thk base course of 20 mm nom size graded aggregate 25 mm thk wearing course of 10 mm nom size graded aggregate  75 mm work to roads 2 coats

Iimestone aggregate

Dense bitumen tarmac  70 mm thk base course of 20 mm nom size graded aggregate 30 mm wearing course of 10 mm nom size graded aggregate  100 mm work to roads 2 coats

Iimestone aggregate 

Dense bitumen tarmac  70 mm thk road base of 28 mm nom size graded aggregate  50 mm thk base course of 20 mm nom size graded aggregate to  30 mm wearing course of 10 mm nominaI size graded aggregate 2.7.4  150 mm work to roads 3 coats I

imestone aggregate

Red bitumen tarmac  70 mm thk base course of 20 mm nom size graded aggregate 30 mm wearing course of 10 mm nom size graded aggregate  100 mm work to roads 2 coats

Iimestone base igneous wearing course