Review of Environmental Factors - Camden Valley Way Upgrade and Liz Kernohan Drive Extension (Final) - Flipbook - Page 141
IDTH 3m
MIN. W
CONSTRUCTION SITE
MIN. L
ENGTH
15m
200mm MIN.
300mm MIN.
DARY
N
TY BOU
R
E
P
O
R
P
RUNOFF DIRECTED TO
SEDIMENT TRAP/FENCE
DGB 20 ROADBASE OR
30mm AGGREGATE
STABILISED SITE ACCESS SD6-14
NOT TO SCALE
GEOTEXTILE FABRIC DESIGNED TO PREVENT INTERMIXING
OF SUBGRADE AND BASE MATERIALS AND TO MAINTAIN
GOOD PROPERTIES OF THE SUB-BASE LAYERS.
GEOTEXTILE MAY BE A WOVEN OR NEEDLE PUNCHED
PRODUCT WITH A MINIMUM CBR BURST STRENGTH
(AS3706.9-90) OF 2500 N
CONSTRUCTION NOTES:
1.
STRIP THE TOPSOIL, LEVEL THE SITE AND COMPACT THE SUBGRADE.
2. COVER AREA WITH NEEDLE-PUNCHED GEOTEXTILE.
3. CONSTRUCT 200MM THICK PAD OVER GEOTEXTILE USING ROADBASE
OR 30MM AGGREGATE.
4. ENSURE TEH STRUCTURE IS AT LEAST 15m LONG OR TO BUILDING
ALIGNMENT AND AT LEAST 3m WIDE.
5. WHERE A SEDIMENT FENCE JOINS ONTO THE STABILISED ACCESS,
CONSTRUCT A HUMP IN THE STABILISED ACCESS TO DIVERT WATER
TO THE SEDIMENT FENCE.
EXISTING ROADWAY
