subdivisional construction standards

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SUBDIVISIONAL CONSTRUCTION STANDARDS
APPLICABLE
CONSTRUCTION
STANDARD
ROAD REQUIREMENTS
ROAD RESERVE WIDTHS
Access Lane
Access Place
Access Street
Collector Street
Trunk Collector
Industrial
ROAD PAVEMENTS
WIDTHS
Access Lane
Access Place
Access Street (court)
Access Street (through street)
Collector Street
Trunk Collector
Industrial
COURT BOWLS AND
HAMMERHEADS
Residential Areas
Industrial
PAVEMENT MAKEUP
Access Lane
CITY OF HOBSONS BAY
CONSTRUCTION STANDARD
6 - 8 metres
14 - 16 metres
16.0 metres
20.0 metres
20.5 - 24 metres
20 metres
Refer to VicCode for definitions
5.0 - 5.5 metres face to face of kerb
5.0 - 5.5 metres face to face of kerb
5.0 - 5.5 metres F/F but must provide
adequate on street car parking on one side
Intermediate Layer 1
Intermediate Layer 2
Wearing Course
Road widths of less than 7.5 metres do not
allow through passage of vehicles if parking is
permitted on both sides of the road pavement.
Indented parking may be required.
7.3 metres face to face of kerb
9 .7 - 10.2 metres face to face of kerb
5.0 - 5.5 metres or 3.5metres in each
carriageway of a dual carriageway
12.0 metres face to face
8.5 metres radius for court bowls which must
allow for the turning of service vehicles.
12 metres radius for court bowls.
Other shapes will be judged on merit and
turning templates.
200mm concrete with one layer of F92
reinforcement on 75mm Class 3 FCR
Access Place /Access Street
Base Layer
COMMENTS
150 mm 2% CSFCR Class 3 or crushed
concrete extending 300 mm behind back of
kerb
180 mm FCR Class 2
35 mm size 14 Asphalt
25 mm size 10 Asphalt (delayed 12 months)
Concrete Pavement
200mm thick concrete F92 reinforcement on
75mm Class 3 FCR
Brick Pavement
80mm Clay brick on 25mm sand bedding
85mm primed layer Class 2 F.C.R.
165mm 2% cement stabilised Class 3 F.C.R.
Hammerheads are not favoured in residential
areas because they limit on-street parking and
may create problems with maneuvering.
Through roads are preferred.
Equivalent clay brick paving is acceptable
The majority of road failures in the Hobsons
Bay area result from earth movement (swelling
or shrinkage) vehicle loading criteria being
less significant. This earth movement is
familiar in the highly reactive balsaltic clays of
the Williamstown, Newport and Altona North
areas and the effect lessens towards the west.
Current pavement profiles are effective and
will be maintained as the AustRoads
guidelines do not address this problem. A
CSFCR layer is necessary to prevent the fine
clay particles from the subgrade migrating
through the pavement. This sealing of the base
has been recommended by independent
geological consultants.
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APPLICABLE
CONSTRUCTION
STANDARD
Collector / Trunk Collector
Base Layer
Intermediate Layer 1
Intermediate Layer 2
Wearing Course
Industrial
CITY OF HOBSONS BAY
CONSTRUCTION STANDARD
200 mm 2% C.S.F.C.R. Class 3 extending
500 mm behind kerb.
200 mm FCR Class 2
35 mm size 14 Asphalt
25 mm size 10 Asphalt
Deep lift asphalt designed for prevailing
conditions
CONCRETE WORKS DETAILS
FOOTPATHS
Access Lane
Access Place / Access Street
1.5 metre wide , 100 mm thick concrete with
F42 reinforcement on 75 mm thick Class 3
F.C.R. base on both sides of street.
Collector / Trunk Collector
1.5 metre wide ,100 mm thick concrete with
F42 reinforcement on 75 mm thick Class 3
base on both sides of street
Industrial
Not Required
PRAM CROSSING
Construction Standards
100 mm thick concrete with F42
reinforcement on 75 mm class 3 F.C.R. - no
bullnose
KERB PROFILES
Access Lane
For historical reasons, kerb profiles will vary
depending on the location within the City and
these standards are currently being
maintained particularly with barrier kerbing.
Access Place / Access Street
Collector / Trunk Collector
Industrial
Intersection Treatments
Vicroads semi-mountable profiles
SM1, SM2, SM3 or Barrier Kerbing
VEHICLE CROSSINGS
Residential Areas at
Required for all allotments.
subdivisional stage
2.8 metres min width,
150 mm thick concrete with F62
reinforcement on 75 mm thick Class 3 F.C.R.
Industrial areas
3m minimum, 7m maximum width
225 mm thick concrete with twin F82
reinforcement on 75 mm thick base of Class
3 FCR
GRADES
Crossfall on road pavement
General minimum 1 in 40
Absolute minimum 1 in 50
Desirable 1 in 36
Longitudinal Fall in Kerb and
General minimum 1 in 200
Channel
Absolute minimum 1 in 285
Absolute minimum around court bowls and
kerb returns 1 in 200
Crossfall footpath
General grade 1 in 50
Crossfall nature strip
General grade 1 in 33
Crossfall allotment
General minimum 1 in 150
Grade Change at vehicle
12% maximum
crossing
COMMENTS
Consideration of Concrete or Conventional
Pavements
designed
for
prevailing
conditions.
May permit 1.2metre wide footpath in courts.
In heritage/conservation areas footpath to be
25mm asphalt on 75mm Class 2 FCR.
In heritage/conservation areas footpath shall
be 25mm asphalt on 75mm Class 2 FCR.
In heritage/conservation areas concrete to be
pigmented “Bay Ferrox” (Colour Black 318)
- 4% pigment/cement ratio.
A standard mountable kerb profile may be
established over time.
As Above
As Above
As Above
Bluestone work required in some residential
areas of Williamstown
In heritage/conservation areas concrete to be
pigmented “Bay Ferrox” (Colour Black 318)
- 4% pigment/cement ratio.
Not required at subdivisional stage.
As per Vic Roads
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APPLICABLE
CONSTRUCTION
STANDARD
SERVICES PROVISION
ALIGNMENTS
Gas
Electricity
Telecom
Water
CONDUITS
Residential Area
Industrial Areas
EASEMENTS
SERVICES RESPONSIBILITY
Water and sewerage
Gas
Telecommunications
Electricity
Drainage
DRAINAGE
RETURN PERIODS
Residential
Industrial
Commercial
Multi unit sites (internal within
boundaries)
Overflow provision in
subdivision (overland)
COEFFICIENT OF RUN OFF
Residential
Industrial
Commercial
Pervious area
Impervious area
RAINFALL INTENSITY
TIME OF CONCENTRATION
PIPE REQUIREMENTS
Pipe type
Min sizes
Min grades
CITY OF HOBSONS BAY
CONSTRUCTION STANDARD
In accordance with Streetworks Code.
In accordance with Streetworks
Underground supply mandatory.
In accordance with Streetworks Code.
In accordance with Streetworks Code.
COMMENTS
Code
50 mm Class 12 PVC conduits provided for
water, gas (and telecommunications if
required). Minimum cover below boxing 100
mm extending 300 mm past kerb, 450 mm
below footpath, generally centrally located
along frontage or as marked on drawings
150 mm class 12 PVC conduits provided for
water and gas for each property.
Minimum width for Council drain 1.80 metre.
New code promotes shared trenching.
New code promotes shared trenching.
New code promotes shared trenching.
New code promotes shared trenching.
Marked on face of kerb and channel and
footpath with 75 mm high letters.
Marked on face of kerb and channel and
footpath with 75 mm high letters.
Required for all public drains and sewers on
properties.
City West Water
Ikon or Westar
Telstra or Optus
AGL or Powercor
Melbourne Water or Council
1 in 5 years
1 in 10 years
1 in 20 years
1 in 20 years
1 in 100 years
0.45
0.9
0.9
0.3
0.9
As per Bureau of Meteorology Chart for the
Hobsons Bay City Council area.
Roof time 5 minutes
Pipe time 2 minutes minimum.
Minimum time 7 minutes
Concrete or FCR with RRJ appropriate class
in accordance with Australian Standard
150 mm if sealed pits
225 mm if unsealed pit
300 mm under road
150 mm 1 in 150
225 mm 1 in 200
300 mm 1 in 250
above 300 mm grade determined by Min
velocity of 0.6 m/s
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APPLICABLE
CONSTRUCTION
STANDARD
Pipe velocity
BACKFILLING
REQUIREMENTS
Easements
Behind kerb and channel
Road crossings
PIT REQUIREMENTS
Spacing
Size
Junction Pits
CITY OF HOBSONS BAY
CONSTRUCTION STANDARD
COMMENTS
Minimum 0.6 m/s
Maximum 6.0 m/s
150 mm above and at sides, 75 mm below
with Class 3 material
Location of drains greater than 300mm
diameter should be avoided within property
easements.
As above but Class 3 material to base of
kerb and channel
As above but Class 3 material to base of road
formation
Max 100 metres
Desirable 50 metres
VicRoads Standard
but with 150 mm thick walls unreinforced
Side Entry Pits
VicRoads Standard
1000 mm x 750 mm.
Step Irons and wall
reinforcement
Lids (except SEPs)
VicRoads Standard
VicRoads Standard
Concrete reinforced.
Corbelling (from large pit to
VicRoads requirement
smaller opening)
750 mm x 750 mm min
Pit in Sump location with no
Double side entry pit
overland flow relief
HOUSE DRAINS OR PROPERTY INLETS
WHERE REQUIRED
Residential Area
Points connected to underground drainage
required for every allotment
Industrial Area
Points connected to underground drainage.
DEPTH
Residential
Minimum cover generally 450 mm.
Absolute minimum 300 mm
Industrial
CONSTRUCTION
REQUIREMENTS
House drains
Minimum depth 1200 mm
Property Inlets
Residential
Property Inlets
Industrial Areas
AGRICULTURAL DRAINS
Location
Construction
As per standard drawing
100 mm minimum Class 12 PVC, "Corflow",
FRC or concrete.
Grade 1 in 50 minimum
225 mm minimum diameter pipe
750 mm x 750 mm for depths to 1200 mm,
750 mm x 1000 mm for depths 1200 mm to
2400 mm
Lid and frame to be Gatic type - no lintel.
Use heavy duty lid and frame in industrial
areas.
Required for depths over 1200 mm, ladders
required for depths over 2400 mm
Areas under road traffic use heavy duty
“Gatic” or approved equivalent
Footpath areas use light duty “Gatic” or
approved equivalent
Inlet size based on area of allotment
Sufficient to drain the allotment from the
furthest point at a minimum grade of 1 in
100.
Sufficient to drain the allotment.
Location to be marked with “O” on footpath
and kerb and channel
Saddle connection to pipe permitted but
connection to pit, where available, is
preferred
Locate clear of driveways.
Connect to appropriate sized pit in main
pipeline.
Behind all kerb and channel
As per standard drawing
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APPLICABLE
CONSTRUCTION
STANDARD
ON STREET CAR PARKING
Indented Parking in Access
Streets
MISCELLANEOUS
Street Signs
Traffic Control signs
Line Marking and RRM's
Permanent Survey Marks
Filling on allotments
Root Barriers
Street Lighting
End of Stage treatment
Plans & Specification
PLANS CONSTRUCTION
PLANS SUBDIVISION
CITY OF HOBSONS BAY
CONSTRUCTION STANDARD
25mm size 7 asphalt
35mm size 14 asphalt
200mm Class 2 F.C.R. or
150mm pattern pave concrete on 75mm Class
3 F.C.R.
to Council requirements
In accordance with the Road Traffic
Regulations
As appropriate
As required
95 % Australian Standard Maximum Dry
Density in 150 mm (loose) layers
Required at every nature strip tree location
In accordance with AS 1158.1 - 1986
Provide for drainage.
Construct end of pavement concrete edge
protection.
Place “ROAD CLOSED” sign.
Initial check
Drainage catchment plan and computations
for downstream drainage capacity and one set
of plans and specification.
Construction.
Three copies design approved plans and one
copy of specification.
COMMENTS
Provide where road pavement width is less
than 7.3 metres face to face of kerb
Concrete preferred for construction finish.
One copy “as constructed” design plans on
durable media and digital plan files in .dwg
or dxf format required prior to issue of
compliance.
Supply extra copy if return endorsed
approved plan required.
Show lot numbers, lot size, extent and depth
of cut and fill, easement locations, service
locations, detail contoured intersection plans,
traffic signage plans as well as general
detailed technical information including
longitudinal sections, cross sections, typical
cross section, pavement details, landscaping
plans, sprinkler systems, street furniture,
TBM's, PSMs, pit schedules and existing and
proposed allotment levels etc
Registered plan
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106733521
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