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© ENERGEX Limited 2020 ABN 40 078 849 055
MANUAL 00305
Underground Distribution Construction Manual
Section C3 – Padmount Transformer Sites
Approved by: A. Bletchly
This drawing must not be
C COPYRIGHT 2011 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITESSECTION INDEX
6229-A4 D
C3 01 1
UDC-C3-0-1D.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
SECTION C3 - PADMOUNT TRANSFORMER SITES
CIVIL WORKS
1Location over Basement3.7
4Retaining Walls-Sloping Sites3.6
1Concrete Surrounds3.5
1Spare3.4
2Foundation Details-Pier3.3
1Foundation Details-Standard Uniculvert 3.2
1Sloping Site-Maximum Cut & Fill3.1
RECTANGULAR TYPE
2Location over Basement2.7
4Retaining Walls-Sloping Sites2.6
1Concrete Surrounds2.5
1Uniculvert Foundation-Lifting & Handling2.4
2Foundation Details-Pier2.3
1Foundation Details-Standard Uniculvert 2.2
2Sloping Site - Maximum Cut & Fill2.1
SQUARE TYPE
9General Requirements1
GENERAL REQUIREMENTS
SheetsDescriptionSub-Sect.
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This drawing must not be
C COPYRIGHT 2019 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL IS
SUE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
GENERAL SITE REQUIREMENTS
6229-A4 H
C3 11 9
UDC-C3-1-1H.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
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Notes a
mended around
4m
minim
um require
ments
The required recessed area (clearance zone) is defined below.
and shall be surveyed and dedicated as part of the road reservation.
Padmounted substation sites shall be recessed in the property alignment
1. Site
PADMOUNTED SUBSTATION INSTALLATION
PADMOUNT TYPE(width & depth)
All estate clear road reserve
sloping site with retaining wall
4.8m x 5.0m for flat site &SQUARE TYPE COMMON EARTH
12.6m x 8.9mSQUARE TYPE SEPARATE EARTH
sloping site with retaining wall
4.6m x 6.7m for flat site &
EARTH
RECTANGULAR TYPE COMMON
11.7m x 9.9mEARTH
RECTANGULAR TYPE SEPARATE
ring main unit, HV metering unit or other ground mounted HV equipment.
10m from a distribution transformer (eg padmount or ground transformer),
an external fire hydrant or Fire Booster Station shall not be installed within
Note also for the requirement in AS2419.1 - Fire Hydrant Installation that
AS 2430 - Classification of hazardous areas
AS/NZS 2229.2 - Fuel Dispensing Equipment for Explosive Atmospheres.
AS 1940 - Storage & handling of flammable and combustible liquids
AS/NZS 1596 - LP Gas - Storage & Handling
Designers must refer to the following standards:
service stations, flammable gas or liquid storage tanks shall be avoided.
The siting of padmount transformers in the vicinity of public swimming pools,
HAZARDOUS AREAS AND HYDRANTS
shall be maintained to the real property boundary.
A minimum of 900 mm clear access around the substation sides and back
parallel as possible to the real property street alignment.
The front edge of the substation plinth shall be 1300 mm from and as near to
For substation site on a truncated section of the street alignment;
TRUNCATED STREET ALIGNMENT
refer Supply & Planning Manual - Sect 3.2 - clause 3.2.6.1
oil volumes above 500L but less than 2000L in sensitive areas,
Guidelines for locating padmount and ground transformers with
zone in this case is not dedicated as part of the road reserve.
in front of the HV end to allow for 2m clear operating zone. Note the clearance
for electric cables and conduits. They should also allow an additional 700mm
Landlocked padmount sites shall also have appropriate easements
possible from the shoreline and sheltered from salt spray.
For coastal areas, substation site must be located as far as
or the Defined Flood Level (DFL), whatever is higher.
transformers, and ring main units shall be installed above the 1:100 year
All new distribution network padmounted transformers, ground mounted
(to address audible noise, EMF requirement, and fire and explosion risk).
construction area to edge of padmounted substation enclosure
- 4 metres minimum from edge of permissible residential dwelling
- Where possible free from steep batters
- Level topography
- Stable soil conditions
The site shall be a location with:
- have 2000mm dedicated clear area directly in front of the plinth.
street alignment or,
- recessed so that the concrete plinth is 1300mm from the R.P.
Square padmount substations shall be centrally positioned and;
common earthing requirements are satisfied.
developer / consultant can prove (via test certificates) that
Provision for separate earthing is always required unless the
Square Padmounts are preferred.
All dimensions are clear internal dimensions.
Uncontrolled Document When Printed
For 200 to 500kVA 11kV433 250V, concrete bored pier foundations may be used.For 750 to 1000kVA 11kV/433 250V, use the uniculvert foundation type if applicable.Concrete bored piers shall be constructed in accordance with the construction drawings.
7. Substation OrientationFront entry substations shall be oriented such that the LV and HVpanels are easily accessible from the dedicated footpath.(ie. Doorfaces the footpath).
8. Backfilling And Final Restoration Of SurfaceAll backfill of the padmount substation site must be compactedbefore final restoration of the site surface. Sealing of the cableapertures in the precast concrete plinth and construction of theconcrete surround slab over the ground surface shall be inaccordance with the construction drawings.
9. Spacing Between Padmount Substation And Other MetalObjects9.1 Separate Earthing Sites The distance between the edge of
the plinth and the consumer's building/residences, fences, LV switchboard earth and metal builder's poles, shall be a minimum of 5 metres at sites where separate LV and HV earthing systems are installed.
The additional area shall be road reserve or an easement to prevent encroachment. The distance between the edge of the earth grid and Telstra's plant and equipment shall be 15 metres at sites where separate LV and HV earthing systems are installed.
9.2 Common Earthing Sites The distance between the edgeof the earth grid and Telstra's plant and equipment shall be 2 metres at sites where common earthing systems (CMEN) are installed
10. Commercial and Industrial InstallationsSubstations shall be located in areas where a mobile crane can easily access the site to install and replace a substation at any time of the night or day, seven days a week.
Energex cable conduits for the development may be placed in the substation site and shall pass down the sides or through the uniculvert foundation. No conduits shall pass under the uniculvert foundation. Conduits shall be 750 mm minimum depth below the finished surface level. Ensure end wall knockouts are grouted with a high strength sand and cement grout after conduit/cable installation through uniculvert foundation.
The site surface is to be finished with a concrete slab (refer site construction drawings). The 2.0m wide apron in front of the substation cabinet shall be finished with a concrete slab sectioned with construction joints for easy removal to excavate.
11. Padmounted Substations in Landscaped AreasSubstations in a landscaped area shall have a formed pathway from the footpath real property street alignment to the substation site. This is to provide safe access to the site for field personnel.When planting vegetation in landscaped areas and gardens, take into consideration the fully matured size of vegetation, ensuring access to the site, one metre clear access around the sides and back of the substation is maintained and 2m clear access to the front of the substation is maintained.
Uncontrolled Document When Printed
Site surface to be finished with concrete slab (as per construction
drawings). The 2.0 metre wide apron in front of the substation
cabinet shall be finished with a concrete slab sectioned with
construction joints for easy removal to excavate.
The formed pathway is to be a concrete slab (refer to the
construction drawings). The concrete pathway slab shall be clear of
cables and conduits to the substation.
The surface of the pathway slab may be finished with clay brick
pavers or concrete tiles over the slab. Installation to be in
accordance with the paver/tile manufacturer's installation
specification.
ENERGEX cable conduits for the development may be placed in
the substation site and shall pass down the sides or through the
uniculvert foundation. No conduits shall pass under the uniculvert
foundation. Conduits shall be 750 mm minimum depth below the
finished surface level. Ensure end wall knockouts are grouted with
a high strength sand and cement grout after conduit/cable
installation through uniculvert foundation.
12. Padmounted Substation Installation in Council Parks
Substations located in Council parklands, shall be installed as per
constructions drawings (refer C3.1 Sheet 5).
13. Bollards Around Padmounts
Bollards shall be installed where padmounts are installed in car
parks or other areas where padmounts are likely to be impacted by
vehicles. The following outlines the minimum requirement for the
design / installation of bollards: -
· Shall be manufactured of 5.6mm thick gal steel (medium)
· Circular tube min 140mm OD filled with concrete and capped.
· Buried 720mm in 400 x 400 x 720(D) concrete pad
· Installed 900mm above ground at 1.5m centres.
14. Enclosures Around Padmounts
A padmount can be enclosed on three sides by walls, but will be
open to ventillation in front and no encumbrance above the site. If
doors are required at the front, they will be louvered to allow air flow
into the padmount, and all signs on the front of the padmount to be
duplicated on the doors. Minimum door opening width 3.0m.
15. Structures Adjacent To And Overhanging Padmounts
· No building or permanent structure is allowed within 5m vertical
clearance above ground level of the padmount transformer site.
· The LV side of the padmount should be positioned away from
offices and livable areas.
· Where possible maintain 4m separation from transformer plinth to
offices and livable areas
16. Multiple Padmount Transformer Site
Substations with two padmount transformers at a single site are
acceptable under the following conditions:
· Layout as per drawing C3-2.1 Sheet 2.
· No more than two square type padmount transformers
· Not for industrial applications, or where standard HV switchgear in
padmount is unacceptable.
· No dual padmount sites over basements
· LV switchboards to be isolated or connected by castel key
interlocks to prevent paralleling.
17. Access to Padmount Transformer Site
Site access to padmount site - 4m wide x 5m high. To suit Franna
T25 crane or flatbed truck. Access track to support crane with axle
loads up to 10 tonne.
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
This drawing must not be
C COPYRIGHT 2019 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL IS
SUE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
GENERAL SITE REQUIREMENTSRETAINING WALLS - GENERAL REQUIREMENTS
6229-A4 C
C3 19 9
UDC-C3-1-9C.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
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Drainage syste
m and
weep holes updated
FOUNDATION
CORE FILLING
F’c SLUMP MAX. AGG.
25 MPa 75mm 20mm
17.5 MPa 150mm 10mm
handle water movement through the conduits and trenches.
and quantity of water expected additional drainage may be required in front of the padmount site to
Depending on site conditions (i.e. arrangement of the slope relative to the retaining wall and trench)
Weep-holes must be provided in the retaining wall as per the notes below.
proper storm water drainage system.
the pipe must extend beyond the ends of the wall unless the pipe is connected to a
PVC agricultural pipe with geo fabric sock located at the base of the wall. The outlets of
width of 300mm immediately behind the wall with a continuous 100mm diameter slotted
- a drainage system within the soil - this shall be achieved by placing gravel to a minimum
- sealing the soil surface - this is achieved by the site finish.
saturated. These steps shall include:
It is essential that steps be taken to prevent the soil behind the wall from becoming
9. DRAINAGE SYSTEM
Hard-drawn steel wire reinforcement fabric complying with AS 1303 and AS/NZS 4671.
Hot rolled deformed bar - �TEMPCORE� complying with AS/NZS 4671.
8. REINFORCEMENT
shall be poured MONOLITHICALLY (in one operation).
Concrete foundation slab with continuous reinforcement over lapped at joints
Concrete work shall comply with AS 3600 and the following table:
7. CONCRETE
be placed under the concrete foundation.
a 100 mm layer of compacted sand or gravel, bedding material shall
Where the bearing surface under the foundation is silt or clay soil;
6. FOUNDATION
accordance with the construction drawings.
within the enclosure shall be backfilled, compacted, levelled and finished in
After installation of the substation and cables has been completed the ground
in the Modified Compaction Test to AS 1289.5.2.1.
Backfill shall be compacted to 95% of the maximum dry density as defined
withstand backfilling loads.
(14 days minimum for 17.5 MPa concrete) so as to have sufficient strength to
Backfill should not be placed or compacted until the wall has cured
drainage characteristics.
Clay soils and organic silts shall not be used as backfill as they have poor
10. BACKFILLING
shall be provided to remove water from the area of the toe of the wall footing.
level below the wall. When necessary a collecting system e.g. spoon drain
apart horizontally. The lowest row should be just above the finished ground
two horizontal rows, spaced not more than 1.5m apart vertically and 1.5m
For walls exceeding 1.4m weep-holes shall be provided in a minimum of
minimum of one horizontal row, spaced not more than 1.5m apart horizontally.
For walls less than 1.4m in height weep-holes shall be provided in a
WEEP-HOLES
This drawing must not be
C COPYRIGHT 2020 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
SQUARE TYPESLOPING SITE - MAXIMUM CUT & FILL
6229-A4 E
C3 2.11 2
UDC-C3-2.1-1E.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
SECTIONA-
NOTE:
For SEPARATE LV & HV earthing a clearance zone of
12.6m wide by 8.9m deep is required.
The clearance zone is to be maintained free from
metallic objects, buildings and structures, including their
foundations.
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FO
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Boundary of RoadReserve area
12600 (S
EP
AR
AT
E E
AR
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4800 (
CO
MM
ON E
AR
TH)
8900 (SEPARATE EARTH)
5000 (COMMON EARTH)
1300
800
PLAN
shown dashedOutline of plinth
150 M
AX
(CU
T - see N
ote 6)
R.P. StreetAlignment
150 M
AX
(FIL
L - see N
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-A
-A
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shall be designed in accordance with C3-2.6. drainage have been considered. Sites requiring retaining walls RPEQ certified design to ensure levels, compaction standards,6. Cut and fill levels greater than 150mm will required a Civil
not encroach onto the substation site.5. Mature landscaping (including trees, sprinklers etc.) shall
finished with a concrete slab, refer C3-2.5.4. After installation is complete the site surface is to be
Energex’s personnel and heavy equipment.3. Clear access to the transformer shall be maintained for
pass through this substation site.2. No services other than the Energex’s electric cables shall
surrounding area graded to ensure no water ponding.1. Energex’s padmount clearance zone shall be levelled and
This drawing must not be
C COPYRIGHT 2020 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
DUAL PADMOUNT TRANSFORMER SITES
SQUARE TYPESLOPING SITE - MAXIMUM CUT & FILL
6229-A4 C
C3 2.12 2
UDC-C3-2.1-2C.DWG
C.Lee
30-10-14
J. Lansley
A. AnandA
SECTIONA
-
NOTES:
objects, buildings and structures, including their foundations.
The clearance zone is to be maintained free from metallic
wide x 8.9m deep is required.
For separate LV & HV earthing a clearance zone of 16.6m
FO
OTP
AT
H
Boundary of RoadReserve area
16600 (S
EP
AR
AT
E E
AR
TH)
5000 (COMMON EARTH)
1300
800
PLAN
shown dashedOutline of plinth
150 M
AX
CU
T
R.P. Street
Alignment
150 M
AX
FIL
L
-A
-A
Clearance Zone
4000
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BC.N
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Note 9. Cut a
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added
B.B
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CA. BLET
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B. B
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footpath o
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Dra
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ho
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T. B
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8900 (SEPARATE EARTH)8800 (
CO
MM
ON E
AR
TH)
retaining walls shall be designed in accordance with C3-2.6.
standards, drainage have been considered. Sites required
RPEQ certified design to ensure levels, compaction
9. Cut and fill levels greater than 150mm will require a Civil
8. Separation between centers of uniculvert is 4000mm.
C3-2.2 for standard uniculvert foundation details.
7. Refer Energex underground distribution construction drawing
encroach onto the substation site.
6. Mature landscaping (including trees, sprinklers etc.) shall not
with a concrete slab, refer C3-2.5.
5. After installation is complete the site surface is to be finished
Energex’s personnel and heavy equipment.
4. Clear access to the transformer shall be maintained for
the space between two padmount transformers.
3. No services other than Energex’s earth grid shall pass through
pass through this substation site.
2. No services other than the Energex’s electric cables shall
surrounding area graded to ensure no water ponding.
1. Energex’s padmount clearance zone shall be levelled and
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
This drawing must not be
C COPYRIGHT 2019 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
SQUARE TYPECONCRETE SURROUNDS
6229-A4 D
C3 2.51 2
UDC-C3-2.5-1D.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
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NOTES M
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H 2 WIT
H
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PA
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OIN
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PLAN
Foundation
Uniculvert
SECTION A
FO
OTP
AT
H
4800
-A
Concrete Edge
Beam
R.P. Street
Alignment
5000
Fall
Fall
Fall
Fall
Fall
Fall
LV
HVPADMOUNTED
SUBSTATION
around plinth
Reinforced concrete
surround slab cast
100mm x 10mm
Expansion joint foam
(Abelflex or equivalent)
Plinth
1300
Real Property
Boundary
(Level Site)thick concrete slab.
Un-reinforced 100/125mm
50mm below top of
Bottom of plinth
concrete surround
excavated area.
Refer Note 1.
Backfill & compact
GroundLevel
Finished
150mm wide cover
strip under concrete
edge beam and over
earth grid
Fall
A-
SECTION
-B
Fall FallFall
Concrete edge beam
150 wide x 150 deep
below finished surface
level to perimeter.
100 50
B-
barrier to front
Polyethylene
of aperture
and 100mm non-reinforced
concrete surround
See Detail ’A’
on Sheet 2
This drawing must not be
C COPYRIGHT 2019 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
SQUARE TYPECONCRETE SURROUNDS
6229-A4 A
C3 2.52 2
UDC-C3-2.5-2A.DWG
A. BLETCHLY
22/01/19
K. SLATER
T. BORGA
(Use textcrete or equivalent product. Construct to supplier’s specifications).
6. The surface of the surround slab may be finished with a stencil pattern surface to match the surrounding pavements of the development.
5. Cable apertures through the precast concrete plinth shall be backfilled to 50mm from the top of the plinth, using bedding material.
4. The concrete slab is to slope away from plinth falling at a slope of 1 in 25.
3. The top face of the concrete surround slab shall be 25mm above the final surface level (when turf is laid).
d) Finish by wood float or by nylon broom.
c) 25 MPa grade concrete;
b) F62 mesh reinforcement in centre of slab;
a) 100 / 125mm thick slab;
2. Reinforced concrete surround slab:
Ensuring that only bedding material is used around cables.
1. Backfill excavated area with crusher dust,deco or bedding material and compact in place.
Reinforced concrete
Plinth
Concrete
100
150
9
Ø12
foam 100 x 10
Expansion joint
100
100
NOTES:
foam 100 x 10
Expansion joint
100
concrete
Non-reinforced
DETAIL ’A’
This drawing must not be
C COPYRIGHT 2019 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
SQUARE TYPERETAINING WALLS - CUT SLOPING SITE UP TO 1200mm CUT
6229-A4 D
C3 2.61 4
UDC-C3-2.6-1D.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
Backfill Material
Road reserve
through footing
for earth rod
Boundaryreserve
Weepholes
Filter Material
Natural
boundary
Backfill
foundationUniculvert
groundlevel
Footpath
C3-1 Sheet 7
Scale 1:50
SECTION A
Finishedsubstationlevel
ground level
wall foundation
Masonryblock wall
For earth rod
Section E2.4.1
location refer
A
Footpath
Retaining
Road reservealignment
PLAN
75 cover bottom
N12-300 ctr lap 400
SL62 mesh with
N16-400
60 cover top
DETAIL
Scale 1:25
1
Aggregate Size (Max)
20mm
10mm
N16-400 cts lap 500
200 series blockwork
Concrete infill to be
at corners & where
watershed cappingrounded to form
N16-400 cts
A
Core Filling
Blockwork/
Concrete Strengths
Footing
Slump
25MPa
17.5MPa
F’c
150
75
Ground Level
Backfill
Material
Material
Drainage
Natural
Cement
300kg/cu. m
Content (Min)
-
1200 M
ax
55 cover300
850
50
250
600 Min
600 Lap
necessary
5000
4800
4400
4800
RoadFence - refer Section
DA
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Weep h
oles a
nd drainage
syste
m u
pdated
Weep-holes
100mm slotteddrainage pipe
This drawing must not be
C COPYRIGHT 2019 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
SQUARE TYPERETAINING WALLS - CUT SLOPING SITE 1200mm-2600mm CUT
6229-A4 D
C3 2.62 4
UDC-C3-2.6-2D.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
Backfill
Drainage
NaturalGround Level
N12-300
N16-400 cts lap 500at corners & where necessary
75 cover bottom
SL62 mesh with60 cover top
N20-400
rounded to form
200 series blockwork
Concrete infill to be
watershed capping
ctr lap 400
N16-400 cts
300 series blockwork
Material
Material
NTS
DETAIL 1
CONCRETE STRENGTHS REFER SHEET 1
Weep holes
50
2600 M
ax
300
2000
800 Lap
55 cover300
1100
1500 M
ax
substation
C3-1 Sheet 7
foundationUniculvert
Backfill
Footpathgroundlevel
through footing
for earth rod
Scale 1:50
SECTION A
Filter
Weepholes
ground level
Backfill
Natural
levelBoundary
location refer
Masonryblock wall
Section E2.4.1
Footpath
A
For earth rod
PLAN
Finished
Road reserve
boundaryRoad reserve
A
Retaining wall foundation
alignment
100
Road reserve
Fence refer Section
5000
4700 or 4800
4200 or 4
400
4800
5000
DA
TE
APP
D
CK
D
DR
ND23.0
1.19
A. BLET
CHL
Y
B. B
RU
NS
MA
NN
T. B
OR
G
Drainage s
yste
m a
nd
weep-holes u
pdated
100mm slotteddrainage pipe
This drawing must not be
C COPYRIGHT 2019 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
SQUARE TYPERETAINING WALLS - FILLED SLOPING SITE UP TO 1.0m FILL
6229-A4 D
C3 2.63 4
UDC-C3-2.6-3D.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
DETAIL 1
N12-40060 cover top
N12-300
N12-400
450 LapN12-400
watershed capping
Concrete infill to berounded to form
blockwork200 seriesBackfill Material
Drainage Material
75 bottom cover300 Cog
N12-400
Concrete Strengths
17.5MPa
25MPa
F’c
Footing
Blockwork/
Core Filling
Slump
150
Cement
300kg/cu. m
Content (Min)
-20mm
10mm
Aggregate Size (Max)
75
200
1000 M
ax
200
500 Lap
300
50
55 cover
300
850
substationC3-1 Sheet 7
foundationUniculvert
Backfill
Footpathgroundlevel
through footing
for earth rodSECTION A
levelNatural ground
level Boundary
location refer
Masonryblock wall
Section E2.4.1
Footpath
A
For earth rod
PLAN
Finished
Road reserve
boundaryRoad reserve
A
Retaining wall foundation
alignmentRoad reserve
Fence refer Section
5000
4800
4400
4800
DA
TE
APP
D
CK
D
DR
ND23.0
1.19
A. BLET
CHL
Y
B. B
RU
NS
MA
NN
T. B
OR
G
Drainage s
yste
m a
nd
weep h
oles u
pdated
Weep-holes100mm slotteddrainage pipe
This drawing must not be
C COPYRIGHT 2019 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILE
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
SQUARE TYPERETAINING WALLS - FILLED SLOPING SITE 1.0 - 1.8m FILL
6229-A4 D
C3 2.64 4
UDC-C3-2.6-4D.DWG
R. ENGLISH
10/10/08
P.BARNEY
F.AMANPOORA
N16-400
75 cover bottomN16-400
N12-400450 Lap
Eachway
Backfill Material
Drainage Material
60 cover top
200 seriesblockwork
rounded to form Concrete infill to be
watershed capping
DETAIL 1
300 Cog
N16-400
Blockwork/150
Core Filling17.5MPa
75
Slump
Footing
F’c
25MPa
Concrete Strengths
300kg/cu. m10mm
-
Content (Min)Cement
Size (Max)Aggregate
20mm
1800 M
ax
250
600 Lap
200
5055 cover
300
300
substation
C3-1 Sheet 7
foundationUniculvert
Backfill
Footpathgroundlevel
for earth rod
levelNatural ground
level Boundary
location refer
Masonryblock wall
Section E2.4.1
Footpath
A
For earth rod
PLAN
Finished
Road reserve
boundaryRoad reserve
4400
4800
A
Retaining wall foundation
alignmentRoad reserve
5000
Fence refer Section
See Detail 1
SECTION A
4800
DA
TE
APP
D
CK
D
DR
ND23.0
1.19
A. BLET
CHL
Y
B. B
RU
NS
MA
NN
T. B
OR
G
Drainage s
yste
m a
nd
weep-holes u
pdated
Weep-holes
100mm slotteddrainage pipe
Uncontrolled Document When Printed
Uncontrolled Document When Printed
This drawing must not be
C COPYRIGHT 2020 ENERGEX
whole without writtenpermission from ENERGEX
reproduced in part or
UNDERGROUND DISTRIBUTION CONSTRUCTION MANUAL
ORIGIN
AL ISS
UE
DATE
APP’D
SECTION SUB-SECT.
CAD
RECD
CKD
DWN
SHT OF
FILESLOPING SITE - MAXIMUM CUT & FILL
CIVIL WORKS
PADMOUNT TRANSFORMER SITES
RECTANGULAR TYPE
6229-A4 C
C3 3.11 1
UDC-C3-3.1-1C.DWG
R. ENGLISH
10/10/08
P. BARNEY
F. AMANPOORA
DA
TE
01.04.2
020
CA. BLET
CHL
Y
B.B
RU
NS
MA
NN
APP
D
CK
D
DR
N
(750 a
pprox t
o 1810).
corrected.
access dim
ensio
ns
Rect p
mt width a
nd side
T. B
OR
G
HV
150 M
AX.
CU
T
4600
LC
= =
= =
980
1810 A
ppro
x
Road Reserve area
SECTION
6700
PLAN
3000
Align
ment
R.P. Street
150 M
AX.
FIL
L
Station
Padmount
Boundary of
LVFO
OTP
AT
H
1500
-A
-A
-A
RESIDENTIAL SITES
installation of more numerous network LV cables.
more frequently used LV section and ease of
This arrangement will allow maximum space for the
LV terminals shall be installed closest to the street.
NOTES:
retaining walls shall be designed in accordance with C3-2.6.
standards, drainage have been considered. Sites required
RPEQ certified design to ensure levels, compaction
6. Cut and fill levels greater than 150mm will require a Civil
encroach onto the substation site.
5. Mature landscaping (including trees, sprinklers etc.) shall not
with a concrete slab, refer C3-3.5.
4. After installation is complete the site surface is to be finished
Energex’s personnel and heavy equipment.
3. Clear access to the transformer shall be maintained for
pass through this substation site.
2. No services other than the Energex’s electric cables shall
surrounding area graded to ensure no water ponding.
1. Energex’s padmount clearance zone shall be levelled and
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
Uncontrolled Document When Printed
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Uncontrolled Document When Printed
Uncontrolled Document When Printed
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