Interlink Retaining Wall Systems - Specifications

Designed to retain level ground

Height	Footing Type	Surface Slope	Surcharge Load KPA	Drainage Type	Depth of Drainage (Area A)	Backfill Material (Area B)
600mm	A	Level	Nil	Aggregate	150mm	Sandy Loam
700mm	B	Level	Nil	Aggregate	150mm	Sandy Loam
800mm	B	Level	Nil	Aggregate	150mm	Sandy Loam
800mm	C	Level	2.5	NFC	200mm	Sandy Loam
900mm	B	Level	Nil	Aggregate	200mm	Aggregate
1000mm	C	Level	2.5	NFC	300mm	Sandy Loam
1200mm	C	Level	2.5	NFC	400mm	Sandy Loam
1400mm	C	Level	2.5	NFC	500mm	Sandy Loam
1600mm	C	Level	5.0	NFC	700mm	Sandy Loam
1800mm	C	Level	5.0	NFC	800mm	Sandy Loam

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Designed to retain a 1:4 slope

Height	Footing Type	Surface Slope	Surcharge Load KPA	Drainage Type	Depth of Drainage (Area A)	Backfill Material (Area B)
600mm	B	1:4	Nil	Aggregate	150mm	Sandy Loam
700mm	B	1:4	Nil	Aggregate	200mm	Sandy Loam
800mm	B	1:4	Nil	Aggregate	200mm	Aggregate
800mm	C	1:4	2.5	NFC	250mm	Sandy Loam
900mm	C	1:4	2.5	NFC	350mm	Sandy Loam
1000mm	C	1:4	2.5	NFC	450mm	Sandy Loam
1200mm	C	1:4	2.5	NFC	600mm	Sandy Loam
1400mm	C	1:4	5.0	NFC	800mm	Sandy Loam
1600mm	C	1:4	5.0	NFC	900mm	Sandy Loam

NFC = No Fines Concrete.

Sharp drainage gravel. 15 to 20mm, mixed with cement 5:1 ratio minimum water (No fines or sand).

Aggregate: = 10 - 25mm sharp drainage aggregate.