Information
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Audit Title
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Document No.
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Client / Site
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Conducted on
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Prepared by
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Location
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Personnel
SUBDIVISION LOCATION DETAILS
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Development Application No.
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Development Proposal
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Lot
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DP
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Assessment Officer
- Nathan McBriarty
- Phil Thompson
- Bernie Boland
- Ron Brear
- Joel Harris
- Luke Preston
- Bryce Short
- Martin Smith
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Assessment Date
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Signing Officer
- Nathan McBriarty
- Phil Thompson
- Bernie Boland
- Ron Brear
- Joel Harris
- Luke Preston
- Bryce Short
- Martin Smith
1. PRELIMINARY
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DA approval
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Date of Approval
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Are there any S96 amendments?
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Part
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- 15
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Part approval date
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1.1 Check Construction Certificate (CC) fees paid and correct
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1.2 Check hard copy plans (Engineering plans in A1) and any other required documents are provided
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1.3 Check electronic copy of "DRAINS" drainage design is provided
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1.4 Check all application documents and fees paid are registered in ECM & Authority
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1.5 Check if there are any other current DA's that relate to same site
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1.6 Access relevant Council Development Control Plan (DCP) that the DA must comply with
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1.7 Review hard copy of DA (including plans) & identify all items in DA relevant to CC application
2. LAYOUT PLANS
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2.1 Layout and boundaries of road reserves, pathways, public reserves, lots and easements
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2.2 Existing contours and final surface contours to be shown
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2.3 Extent and depth of cut and fill to comply with DA approved plan
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2.4 Grade, batters and cuts to be provided & to comply with DA approved plan
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2.5 Details of retaining walls to be provided & comply with DA approved plan
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2.6 Existing natural features such as cliffs, watercourses, swamps, dams, clusters of trees with diameter of 0.2 or greater
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2.7 Any environmental, historical or sites of aboriginal significance to be shown on plan
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2.8 Any improvements on the land
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2.9 Limit of works including cuts and fills
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2.10 Road chainages and widths of footpath & carriageway, control points, bench marks, datum & ties to existing boundaries
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2.11 Kerb & Gutter alignment, profile, footpath & pedestrian ramp locations
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2.12 Location of subsoil drains
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2.13 Existing and proposed drainage lines and structures suitably identified & diameter indicated
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2.14 Notation regarding provision of guide posts and guard rails
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2.15 Road centreline bearings, centreline, kerb return & cul-de-sac radii
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2.16 Tangent points to horizontal curves & kerb returns
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2.17 Large vehicle turning paths in critical areas
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2.18 Location of existing & proposed service mains
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2.19 Pavement details & design including structural design for flexible pavement, concrete pavement & segmental pavement
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2.20 Earthworks, Batters, Cuts & Retaining Walls. Detailed plans and sections may be required
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2.21 Sediment & Erosion Control Plan
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2.22 Street furniture, street names signs, traffic management plan
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2.23 Scale not less than 1:500
3. ROAD LONGITUDINAL SECTIONS
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3.1 Longitudinal sections are required on all new roads & on existing roads where part width construction is required
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3.2 New road longsections shall extend 45 metres into existing roads
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3.3 Road centreline chainage
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3.4 Tangent points, kerb return tangent points & intersection points
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3.5 Existing & finished surface
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3.6 Existing & finished levels including footpaths in cul-d-sac
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3.7 Existing culverts, sewer, water, gas, electricity
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3.8 Grades, vertical curves, high points & low points
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3.9 Limit of work to be shown on plans
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3.10 Scales shall not be less than 1:500 H & 1:100 V
4. ROAD CROSS SECTIONS
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4.1 Cross sections shall be provided at a maximum of 15 metre intervals, tangent points and other critical locations.
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4.2 Cross section shall extend a minimum of 5 metres beyond road reserve boundaries
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4.3 Cross section scale shall be not less than 1:200
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4.4 Details to be shown on cross sections:<br>• Chainage & offsets<br>• Existing & finished surface <br>• Existing Finished surface levels<br>• Cross sections at Kerb Return TP's, half width sections at IPs shall be shown<br>
5. KERB RETURN DETAIL PLANS
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5.1 Kerb return detail plans shall be provided for all intersections & cul-de-sac
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5.2 Plans shall be at a scale of not less than 1:200
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5.3 Details to be shown on kerb return plan:<br>• kerb return layout plan<br>• Finished pavement surface contours<br>• Drainage details<br>• Lot numbers of adjacent lots<br>
6. KERB RETURN LONGITUDINAL SECTIONS
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6.1 Shall be provided for all intersections & cul-de-sacs
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6.2 Low point shall be beyond the TP of the kerb return
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6.3 Long section shall extend minimum of 5m beyond TP's
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6.4 Sections shall be presented at a scale of 1:200 H & 1:50 V
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6.5 Details to be shown on KR longsection:<br>• Kerb chainage<br>• Finished surface<br>• Finished levels<br>• Low Point<br>• High points<br>• Vertical curve details<br>
7. DRAINAGE LONGITUDINAL SECTIONS
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7.1 Shall be provided for all drainage lines including interalotment lines
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7.2 Scale shall be 1:500 H & 1: 100 V
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7.3 The following details required:<br>• Chainage<br>• Existing & finished levels<br>• Existing & finished surface levels at each pit/headwall & at 15m max intervals<br>• Pipe invert at each pit/headwall<br>• Drainage structures<br>• Pipe grade, design discharge, velocities, pipe class & pipe bedding details<br>• Hydraulic Grade Line<br>• Service locations<br>
8. CATCHMENT PLAN
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8.1 Scale not less than 1:1000
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8.2 The following details required:<br>• Layout & boundaries of road reserves, pathways, public reserves, lots & easements<br>• Existing & proposed drainage lines, both major & minor routes including interalotment drainage lines<br>• Catchment & subcatchment limits with contributing area in hectares.<br>• Final surface contours<br>• Crests & Sags in roads<br>• Existing watercourses<br>• Adjacent contributing catchments with contributing area in hectares<br>• Limit of inundation by the 1 in 100 year Average Recurrence Interval Flood<br>
9. Erosion & Sediment Control Plan
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9.1 Scale not less than 1:1000
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9.2 Plan shall be approved by DECCW prior to being lodged with council
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9.3 The following details required:<br>• Layout & boundaries of road reserves, pathways, public reserves, lots & easements<br>• Existing contours & final surface contours<br>• Location of existing vegetation & proposed vegetated buffer strips<br>• Location of critical areas (vegetated buffer strips, drainage lines, water bodies, unstable slopes, flood plains & seasonal wet areas)<br>• Diversion of uncontaminated runoff around areas to be disturbed <br>• The nature & extent of proposed earthworks, including areas of cut & fill.<br>• Location of erosion & sediment control structures. Specification for maintenance of control works<br>• Details for disposal of intercepted sediment<br>• Rehabilitation proposals<br>• Dust control measures<br>
10. ROAD DESIGN CONTROLS
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10.1 Footpath Crossfalls<br>• Standard 4%<br>• Maximum 6%<br>• Minimum 2%<br>• Overland Flow -1%<br>
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10.2 Road Pavement Crossfall<br>• Standard 3%.<br>• Maximum 6%.<br>• Minimum 2%<br>
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10.3 Max Grade for 6m & 11m roads shall be 16%. Grades up to 20% can be considered
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10.4 Max Grade for > 11m roads shall be 10%
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10.5 Min Grade for any road 0.5%
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10.6 Lengths of roads at limiting grades to be kept at minimum
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10.7 Cul-de-sac crossfall min 1.5% max 8%
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10.8 Maximum batter slope not to exceed 4%
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10.9 Minimum Kerb Return radius 7.5m
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10.10 Minimum cul-de-sac radius 10.5m
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10.11 Minimum centreline radius 30m
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10.12 Sight distance at intersections to comply with AUSTROADS "Guide to Road Design"
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10.13 Lengths of vertical curves shall be determined AUSTROADS "Guide to Road Design"
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10.14 Minimum length of vertical curve at intersection of minor road with the through road shall be 8m
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10.15 Minimum angle of intersections shall be 70 degrees
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10.16 At intersections the minor road shall be graded to conform with the levels of the gutterline of the through road
11. DRAINAGE
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11.1 Estimation of discharge shall be by a method detailed in "Australian Rainfall & Runoff"
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11.2 "Drains" program to be used for modelling
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11.3 Design average recurrence:-<br><br>Roadway, accessway <br>Minor - 1 in 10<br>Major - 1 on 100<br>Relief of low point through private property. Allow for blockages<br>Minor - 1 in 100<br>Major - 1 in 100<br>Relief of low point through public open space<br>Minor - 1 in 10<br>Major - 1 in 100<br>Dual use Floodway (passive open space)<br>Minor - 25% of 1 year flow<br>Major - 1 in 100<br>Detention basins (passive open space)<br>Minor - 25% of 1 year flow<br>Major - 1 in 100<br>Spillway to allow for PMF<br>Dual use Detention Basins (Active open space)<br>Minor - 1 in 1<br>Major - 1 in 100<br>Spillway to allow for PMF<br>Subsoil drainage to be installed<br>
12. DRAINAGE DESIGN CONSTRAINTS
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12.1 Maximum width of flow in gutter is 2.45m
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12.2 Depth in gutter not to exceed 200mm for 1 in 100 event
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12.3 Bypass flow at pit not to exceed 20%
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12.4 Minimum pipe size draining public areas 375mm diameter
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12.5 Min Inter-allotment drainage line is 150mm diameter, 400mm deep
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12.6 Maximum water level in pit shall be 150mm below gutter invert
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12.7 Maximum spacing of pits is 100m
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12.8 Minimum velocity 0.6m/s Max velocity is 8m/s
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12.9 Velocity of flow outside of pipelines & designated floodways is 0.4m/s. Roadways.
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12.10 Ilsax model parameters <br>Soil type 3<br>AMC 3<br>Paved area depression storge 1mm<br>Pervious area depression storage 5mm<br>
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12.11 Impervious areas<br>Residential 45%<br>Road reserve 70%<br>Medium Density Res 80%<br>Commercial 100%<br>Industrial 100%<br>Public Rec 25%<br>
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12.12 Inlet lengths<br>Nominal 1.8<br>2.4 & 3.00 acceptable <br>
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12.13 Pipes & culverts to be designed using Hydraulic grade line method
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12.14 Pipe Friction Losses<br>Spun concrete 0.3<br>Fibre reinforced cement 0.06<br>uPVC 0.06<br>
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12.15 Pit Head Losses<br>As per recommendations in Code<br>
13. TRUNK DRAINAGE SYSTEM
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13.1 Velocity depth product shall not exceed 1m/s
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13.2 Max velocity in grass lined channels not to exceed 2m/s
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13.3 Max velocity in hard lined channels 6m/s
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13.4 Max batter slopes in channels 1 in 6
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13.4 Floodways signposted
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13.5 Fencing
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13.6 Indentify GPT requirements
14. ROADWORKS
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14.1 Discharge not to exceed pre-developed discharge
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14.2 No increase in flooding downstream
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14.3 Embankment have freeboard 500mm above 1 in 100
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14.4 Spillway to safely pass the PMF
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14.5 Batters not to exceed 1 in 6
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14.6 Outlet requirements to be discussed with council
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14.7 Floor to be free flowing & not waterlog
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14.8 If pond fits into dam category it will need NSW Dam Safety approval
15. ROADWORKS
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15.1 Pavement to be designed by geotech & be based on road hierarchy
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15.2 Subgrade or subgrade replacement shall be compacted to 100% standard or 95% modified
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15.3 Subsoil drains to be placed on topside of carriageway or elsewhere as required. Obvert of subsoil to be 150mm below finished subgrade level
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15.4 Subbase to extend 150mm outside back of kerb & be compacted to 95% modified
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15.5 Basecourse to be compacted to 98% modified
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15.6 Wearing surface to be either 2 X 20mm AC7 or 1 x 40mm AC10.<br>Roundabout to be special polybuilt roundabout mix <br>
16. KERB & GUTTER
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16.1 Kerb to be either Roll Kerb or Barrier Kerb depending on DA consent
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16.2 Concrete for K & G be 20Mpa special mix
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16.3 Metal kerb outlet for each lot where lot drains to street
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16.4 Expansion joint every 9m tool joint every 3m
17 STORMWATER STRUCTURES
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17.1 Pipes to be either reinforced concrete or fibre reinforced cement with rubber ring joints. Class of pipe determined by cover
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17.2 Inter-alotment drainage can be Sewer grade uPVC pipes
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17.3 All stormwater mains to be CCTV at completion
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17.4 "Bird mouth" pit entries not permitted
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17.5 Pits > 0.9 to have steps
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17.6 Pits > 1.8 deep require reinforcing designed by structural engineer
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17.7 Pits to be rendered and self flushing
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17.8 Lintel inlets only at sag or low spots
18. GRASSING
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18.1 Areas to be grassed or turfed to be ripped along the contour then 100mm topsoil placed the grassed or turfed
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18.2 Developer to maintain grassed areas during defects liability period
19. MANDATORY NOTES
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19.1 Service conduits to be installed prior to any pavement material
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19.2 Inspections to be arranged in accordance with code
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19.3 Bonds/Guarantees can be arranged for incomplete work eg asphalt, footpaths, landscaping, minor corrections
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19.4 Developer to maintain site during defects Liability period which is for 6 months or until developer satisfactorily completes all work
20. APPROVAL
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Satisfactory?
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Signature
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Date
