Topaz Street Op Works · OPW11/0320

 

 

OPEN CONCRETE BLOCKS

 

GRAVEL FILTER

SANDBAG OVERLAP.
RB

ONTO KEI 4.0m_MIN.

    
  
  
   
   
   
   

600mm (NOM) GAP

BETWEEN SAND BAGS

ACT AS SPILLWAY
THREE LAYERS OF
SANDBAGS WITH ENDS
OVERLAPPED.

DOWN STREAM GULLY PROTECTION DETAILS
NOT TO SCALE

BURY THE TOP OF THE PLASTIC
IN TRENCH MIN 300mm _ DEEP.
STAPLE AT 150mm CENTRES.
COMPACT SOIL OVER BLANKET

CENTRELINE SECTION AT POINTS “A”

FILL TRENCH WITH SOIL
AND COMPACT

OVERLAP—BURY UPPER END OF
LOWER BLANKET AS IN “A”. OVERLAP
END OF TOP BLANKET 300mm AND
STAPLE AT 150 CRS.

APLES: 8 GAUGE
(4mm) WIRE

CENTRELINE SECTION AT POINTS “B”

[nae
“4

  

STAPLE BLANKETS
AT GRID OF
1m CENTRES

STAPLE OUTSIDE EDGES
AT 300mm CRS.

CLEAN/DIRTY DIVERSION DRAINS

DIVERSION DRAIN CONSTRUCTION NOTES

. REMOVE ANY ROCKS, CLODS, STICKS OR GRASS FROM THE SURFACE BEFORE LAYING PLASTIC.
. ENSURE THAT TOPSOIL IS AT LEAST 75mm DEEP.
. ENSURE PLASTIC WILL BE CONTINUOUSLY IN CONTACT WITH THE SOIL BY GRADING THE SURFACE

CAREFULLY FIRST.

. LAY FABRIC IN "SHINGLE FASHION”, WITH THE END OF EACH UPSTREAM ROLL OVERLAPPING THOSE

DOWNSTREAM. ENSURE EACH ROLL IS ANCHORED PROPERLY AT ITS UPSLOPE END.

. ENSURE FULL WIDTH OF FLOW CHANNEL IS COVERED BY THE PLASTIC.

Unbound pavement material (gravel) to Grading
B, Table 9 of QT Specification MRS11.05,
exclude material finer than sieve 2.36mm

GEOFABRIC FABRIC, BIDIM A34
OR SIMILAR

e
RUNOFF TO BE DIRECTED TO A SEDIMENT TRAP,
REFER STANDARD DRAWING D—0041.

TEMPORARY ENTRY/EXIT CONSTRUCTION NOTES

. STRIP THE TOPSOIL, LEVEL THE SITE AND COMPACT THE SUBGRADE. 5.
. COVER THE AREA WITH NEEDLE-PUNCHED GEOTEXTILE.

|. CONSTRUCTION A 200mm THICK PAD OVER THE GEOTEXTILE USING ROAD BASE OR 30mm.

. ENSURE THE STRUCTURE IS AT LEAST 15m LONG OR TO BUILDING ALIGNMENT AND AT

RUNS

go

SEDIMENT AND EROSION CONTROL
DETAILS

 

 

 

ALL EROSION AND SEDIMENT IN ACCORDANCE WITH IN ACCORDANCE WITH
WITH MAROON BOOK MANUAL FOR EROSION AND SEDIMENT CONTROL

UNDISTURBED AREA

 

 

 

 

GEOTEXTILE STAKES
FILTER Fi

   
    
     
  

STAKES,

   

RUNOFF WATER
WITH SEDIMENT

=

 

GEOTEXTILE —
FILTER FABRIC

BURIED FABRIC FUTERED

GEOTEXTILE INLET FILTER
GEOTEXTILE INLET FILTER CONSTRUCTION NOTES

1. FABRICATE A SEDIMENT BARRIER FROM GEOTEXTILE.

2. FOLLOW DETAIL FOR SEDIMENT FENCE FOR GEOFABRIC
INSTALLATION. REDUCE PICKET SPACINGS TO 1m CENTRES.

3. DO NOT COVER THE INLET WITH GEOTEXTILE UNLESS THE
DESIGN IS ADEQUATE TO ALLOW FOR ALL WATERS TO
BYPASS IT.

    
 

Geotextile fabric, —~

Bidum U34 or similar

Zz &

Runoff from pad directed to sediment trap

TEMPORARY CONSTRUCTION ENTRY/EXIT SEDIMENT TRAP
Not to Scale

CATTLE GRID 3.0m NOM WIDTH
SET 300mm ABOVE GROUND

   
  

a

TEMPORARY ENTRY/EXIT 3.

LEAST 3m WIDE.

. WHERE SEDIMENT FENCE JOINS ONTO THE STABILISED ACCESS, CONSTRUCTION A HUMP OR

GRATE IN THE STABILISED ACCESS TO DIVERT WATER TO THE SEDIMENT FENCE.

DROP INLET
WITH GRATE,
_

500mm TO afonm

VV

DISTURBED
AREA

STAKES DRIVEN INTO GROUND ~

   
  

 

 

 

 

 
 
  
 

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Na
—_
GEOTEXTILE FILTER FABRIC
—_
—
—_] HOLD IN PLACE.
WITH SAND BAGS:
—_, GEOTEXTILE FILTER SOCK

FILLED WITH 25MM GRAVEL

KERB INLET PIT SEDIMENT BARRIER

1.5m TIMBER STAKES
AT MAX 2.5m CENTRES

SELF—SUPPORTING
GEOTEXTILE:

DIRECTION OF
FLOW

 
 

 

ON SOIL, 150mm x 100mm
TRENCH WITH COMPACTED
BACKFILL AND ON ROCK, SET

SECTION DETAIL INTO SURFACE CONCRETE

KERB INLET PIT SEDIMENT BARRIER

CONSTRUCTION NOTES
1.

FABRICATE A SLEEVE FROM GEOTEXTILE OR WIRE MESH
LONGER THAN THE LENGTH OF THE INLET PIT AND FILL
WITH 25mm TO 50mm GRAVEL.

FORM AN ELLIPTICAL CROSS—SECIRCUITION APPROX.
HIGH, 400mm WIDE.

PLACE THE FILTER AT OPENING LEAVING AT LEAST
100mm BETWEEN KERB INLET AND SLEEVE. MAINTAIN
OPENING WITH SPACER BLOCKS.

FORM A SEAL WITH KERB TO PREVENT SEDIMENT
BYPASS.

SANDBAGS FILLED WITH GRAVEL CAN SUBSTITUTE FOR
THE MESH OR GEOTEXTILE PROVIDED THEY ARE PLACED
SO THAT THEY FIRMLY ABUT EACH OTHER AND
SEDIMENT LADEN WATERS CANNOT PASS BETWEEN.

150mm

 

 

   

 

 

 

 

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NV DIRECTION OF" FL

   
 
   
   
 

  
 
   

V Vv V

1.5m TIMBER STAKES
AT MAX 2.5m CENTRES.

  
   

SEDIMENT FENCE

NOTE: POINTS @ AT SAME
ELEVATION

SEDIMENT FENCES

Sediment Fence installed across the contour
- uncontoured concentration of flow should be avoided

NOT TO REGULAR SCALE

sSEDIMENT FENCE CONSTRUCTION NOTES

1. CONSTRUCTION SEDIMENT FENCES AS CLOSE AS
POSSIBLE TO BEING PARALLEL TO THE CONTOURS OF THE
SITE, BUT WITH SMALL RETURNS. THE CATCHMENT AREA
SHOULD BE SMALL ENOUGH TO LIMIT WATER FLOW IF
CONCENTRATED AT ONE POINT.

2. | CUT A 150—mm_ DEEP TRENCH ALONG THE UPSLOPE
LINE OF THE FENCE FOR THE BOTTOM OF THE FABRIC TO
BE ENTRENCHED.

3. DRIVE TIMBER STAKES INTO GROUND AT 2.5m
INTERVALS (MAX) AT THE DOWNSLOPE EDGE OF THE TRENCH.
4. FIX SELF—SUPPORTING GEOTEXTILE TO THE UPSLOPE
SIDE OF THE POSTS ENSURING IT GOES TO THE BASE OF
THE TRENCH. FIX THE GEOTEXTILE WITH WIRE RECOMMENDED
BY THE MANUFACTURER. THE USE OF SHADE CLOTH FOR
THIS PURPOSE IS NOT SATISFACTORY.

5. JOIN SECTIONS OF THE FABRIC AT A SUPPORT POST
WITH A 150mm OVERLAP.

6. BACKFILL THE TRENCH OVER THE BASE OF THE FABRIC
AND COMPACT IT THOROUGHLY OVER THE GEOTEXTILE.

 

 

 

 

 

 

 

 

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LINDSA Y CONSULTING [7 |

STRUCTURAL AND CIVIL

 

 

 
 
  

 

OFF. 2C/82 PARKER STREET/MAROOCHYDOR