LAND DEVELOPMENT - SURVEY MANUAL 01

Transcription

1 2012 Central Highlands Water All rights reserved. This publication is protected by copyright and is provided under licence. No part of this publication may be reproduced, distributed, transmitted, stored in a retrieval system, or reduced to any electronic medium without the written corporation of the Chief Executive Officer of Central Highlands Water.Central Highlands Water assumes no responsibility for any errors in or omissions from this document or any damages arising out of the use or inability to use this document. Changes may be made periodically to the information herein. LAND DEVELOPMENT - SURVEY MANUAL 01

2 CONTENTS 1.0 Preface 2.0 Introduction 2.1 Intended audience 2.2 Related reference material 3.0 Protection of People, Property and Environment 3.1 General 3.2 Work in confined spaces 3.3 Entering excavations 3.4 Protection of services 3.5 Trees 3.6 Private and public properties 3.7 Established survey marks 4.0 Cadastral Survey Requirements and Responsibilities 4.1 Developer s responsibilities 4.2 Surveyor s responsibilities - Prior to the commencement of the works - During the construction of the works - Upon completion of the works 5.0 Connection to MGA 5.1 General 5.2 Connection of subdivision to MGA 5.3 Notification of inaccuracies 5.4 Accuracy 5.5 Establishing horizontal control where a design specifies MGA values 5.6 Supply of horizontal control information (MGA) 5.7 Accuracy 6.0 Connection to AHD 6.1 General 6.2 Establishing vertical control (AHD) 6.3 Supply of vertical control information (AHD) 6.4 Accuracy 02 LAND DEVELOPMENT - SURVEY MANUAL

3 CONTENTS 7.0 Supply of subdivision information 7.1 Application for Notice of Agreement 7.2 Plans 8.0 As-constructed tolerances 8.1 Water tolerances on as-constructed work 8.2 General 8.3 Horizontal tolerances - Water mains and online structures (eg. valve access chambers) - Property connections 8.4 Vertical tolerances - Water mains, property connections and structures 8.5 Sewer tolerances on as constructed work 8.6 Horizontal tolerances - Sewers and online structures (eg. MHS, MSS, TMSS) - Property connection sewers 8.7 Vertical tolerances - Sewers and structures - Property connection risers and inspection openings 9.0 General requirements 9.1 Recording of as-constructed Sewerage Assets 9.2 Defaults for hard copy field notes 9.3 Common access points - Acceptable abbreviations for hard copy filed notes 10.0 Service of notices 10.1 Notice to property owners 10.2 Notice to the contractor 10.3 Notice to the nominated representative 10.4 Record of notices LAND DEVELOPMENT - SURVEY MANUAL 03

4 CONTENTS 11.0 Water supply 11.1 Vertical position 11.2 Horizontal position 11.3 Pipe junctions 11.4 Ends of mains 11.5 Changes of direction 11.6 Fittings 11.7 Change of pipe characteristics 11.8 Property connections to water 11.9 Curved water mains - Vertical water main - Horizontal curved water main Digital Information Non-digital information Details to be recorded for water mains Other details to be recorded 12.0 Sewerage 12.1 Sewer access points 12.2 Maintenance Holes 12.3 Details to be recorded for maintenance holes 12.4 Terminal maintenance shafts 12.5 Maintenance shafts 12.6 Ends of pipe and reducers 12.7 Pipe junctions 12.8 Pipe sections (Maintenance Hole to Maintenance Hole) 12.9 Details to be recorded for pipe sections Curved sewers - Vertical curved sewers - Horizontal curved sewers Property branch sewers Details to be recorded for property branch sewers Details to be recorded for rising mains and pumping stations Change of pipe characteristics Changes of direction Fittings Curved rising mains - Vertical curved rising mains - Horizontal curved rising mains Details to be recorded for rising mains - Vertical curved rising main - Horizontal curved rising main - Vertical position (the invert of pipe is required) - Horizontal position - Pump stations 04 LAND DEVELOPMENT - SURVEY MANUAL

5 CONTENTS 13.0 Supply and format of data for subdivisions 13.1 Central Highlands Water s responsibilities 13.2 Consultant s responsibilities 13.3 Digital data supplied by the consultant 13.4 AutoCAD.DXF format 13.5 Documentation supplied by the consultant - Licensed surveyors specifications - Application details 13.6 File naming conventions 13.7 Data transfer - Format and media - Batches 14.0 Graphical specifications for subdivisions 14.1 Content, structure and separation of the data 14.2 Information required in digital format 14.3 Information not required in digital format 14.4 Amended plans of subdivision 14.5 Graphics schedule - AutoCAD DXF 14.6 AutoCad.DXF requirements 15.0 Placement of data in graphics files 15.1 Proposed road alignments 15.2 Proposed road centrelines 15.3 Proposed road names and road types 15.4 Proposed title boundaries 15.5 Proposed lot numbers 15.6 Proposed easement lines 15.7 Proposed easement text 15.8 Proposed reserves text 15.9 Vinculums LAND DEVELOPMENT - SURVEY MANUAL 05

6 CONTENTS 16.0 Supply and format of data for water supply and sewerage 16.1 Central Highlands Water s responsibilities - Data supplied by Central Highlands Water - Documentation supplied by Central Highlands Water 16.2 Consultant s responsibilities 16.3 Reduced levels 16.4 Spatial correctness 16.5 Graphical files 16.6 AutoCAD DXF format 16.7 File naming conventions - Graphic files 16.8 Data transfer - Formats and media 16.9 Batches 17.0 Graphical specifications for water 17.1 Graphics schedule - for.dxf format 17.2 Level structure 17.3 Associated graphical specifications 17.4 Text - Justification of text 17.5 Displayable number of decimal places 17.6 Water cells 18.0 Nodes for Water Supply 18.1 Node numbers 18.2 Node placement - Nodes at intersections - Nodes at change of pipe characteristics - Nodes at valves 06 LAND DEVELOPMENT - SURVEY MANUAL

7 CONTENTS 19.0 Pipes 19.1 Pipe placement 19.2 Crossovers 19.3 Chaining 19.4 Offset symbol and text 19.5 Pipe details and placement 19.6 Placement regularity 19.7 Pipes in conduits 19.8 Property connections 19.9 Property connection offset Scour pipes Graphical flags - Problem graphical flags - Documentation to be supplied Abandoned water mains Depth 20.0 Other fittings for water supply 21.0 Verification of data for sewerage Verification requirements - Required verification checks - Uniqueness criteria checks - Sewer pipe section invert levels, size and length 22.0 Graphical specifications for sewerage 22.1 Graphics schedule - Form.DXF format 22.2 Graphical error flags 22.3 Level structure 22.4 Associated graphical specifications 22.5 Text - Justification of text 22.6 Displayable number of decimal places - Invert levels - Conduit grade - Other items 22.7 Flow arrows - Arrow shaft - Text justification - Direction of flow arrow head 22.8 Calculation of conduit grade 22.9 Access chambers Property service branch end of pipe data information Sewerage symbology LAND DEVELOPMENT - SURVEY MANUAL 07

8 CONTENTS 23. Placement of data in graphics files for sewerage 23.1 Placement of additional branches on existing sewers 23.2 Placement of text and flow data 23.3 Text placement priorities - Placement of text in areas of limited space 23.4 Placement of text arrows 24. Access chambers 24.1 Orientation of access chambers 24.2 Access chamber chainages 24.3 Graphical input of running chainages 24.4 Access chamber numbering 25. Sewer pipes and flow data 25.1 Sewer pipe sections 25.2 Intersection of sewer pipes 25.3 Curved sewers 25.4 Horizontal curves and bends 25.5 Horizontal curves 25.6 Horizontal bends 25.7 Vertical curves and changes of grade 25.8 Vertical curves 25.9 Changes of grade Rising mains Change of rising main size, material, status or number of conduits Siphons - Graphical representation Future sewer connections Stub pipes Table constructions Flow arrows Placement of flow arrows Conduit data - Conduit size - circular conduits - Conduit size - non-circular conduits - Conduit grade - reverse grade - Text placement in lieu of grade - Conduit material and joint packing material - Conduit joint packing Invert levels - Placement of invert levels 08 LAND DEVELOPMENT - SURVEY MANUAL

9 CONTENTS 26. Sewer pipe features and notation 26.1 Sewer offsets - Placement 26.2 Offsets from features other than property boundary 26.3 Abandoned sewers 26.4 Demolished sewers 26.5 Sewer renewals - Relining - Replacement 26.6 Graphical flags - Problem graphical flags - Documentation to be supplied 27. Property service branches and associated features 27.1 General 27.2 Property service branch size 27.3 Property service branch material 27.4 Property service branch length 27.5 Property service branch type 27.6 Property service branch chainage 27.7 Property service branch surface level 27.8 Property service branch invert level 27.9 Graphics - Property service branch offsets - Placement of property service branch ties - Projection lines - For standard ties - For direct ties - Jump-up symbol New PS Branches on existing sewers - For DXF formats 28. Appendices LAND DEVELOPMENT - SURVEY MANUAL 09

10 1.0 PREFACE The purpose of the field recording of water and sewer mains for Central Highlands Water is to allow the Corporations Asset Information Team to record and update the information on the Geographical Information System (GIS). This system provides the Corporation with information and details regarding its water and sewerage main assets. It is essential for the Corporation to have both accurate and current information on all of its assets, so as to ensure confident use of its computer system when dealing with the Operations and Maintenance Team, contractors and the general public. It is therefore imperative that any digital information, paper plans or field notes be recorded in an as constructed manner and not as designed. All field notes must be recorded neatly, must be easy to read and what was recorded in the field absolutely clear to any person with some field recording experience. Also when recording information on field notes, keep in mind the details that will be required by the person entering them into the computer. At least three (3) measurements are therefore required to identify the position of a particular feature. This allows for two measurements and a redundant third measurement which can be used as a check. These measurements can be any combination of direct ties, offsets or chainages. Central Highlands Water is currently in a position to electronically transfer digital linework and textual information directly into the mapping system. We will therefore use the digital linework as an overlay to record the asset location and manually enter the appropriate database information for each of the assets contained in the file. The purpose of these manuals is to set out the requirements to achieve the above objectives and principles. All detailed requirements in this manual shall be interpreted in support of the above. 10 LAND DEVELOPMENT - SURVEY MANUAL

11 2.0 INTRODUCTION This manual describes Central Highlands Water s survey requirements for water supply and sewerage works. The manual comprises: An overview of the quality requirements General and cadastral requirements and responsibilities As-constructed information to be recorded Graphics data specifications required by Central Highlands Water for the supply of digital subdivision data Graphical data specifications required by Central Highlands Water for the supply of digital water data Graphics and non-graphics data specifications required by Central Highlands Water for the digital recording of as constructed sewerage service information 2.1 INTENDED AUDIENCE This manual has been written for engineering and survey consultants and Central Highlands Water staff. 2.2 RELATED REFERENCE MATERIAL The following documents are referred to or are relevant to this manual: Occupational Health and Safety Act 2004 Subdivision Act 1988 Survey Co-ordination Act 1958 Survey Co-ordination (Surveys) Regulations 1992 Surveyors Act 1978 Surveyors (Cadastral Surveys) Regulations 2005 Survey Practice Handbook, Volume 2 LAND DEVELOPMENT - SURVEY MANUAL 11

12 3.0 PROTECTION OF PEOPLE, PROPERTY AND ENVIRONMENT 3.1 GENERAL Work performed by the licensed surveyor and works surveyor must comply with the Victorian Occupational Health and Safety Act WORK IN CONFINED SPACES The Licensed Surveyor, Works Surveyor and other employees are not permitted to enter a live Maintenance Hole unless appropriately qualified. Entering or work in a confined space must be done only in accordance with Victorian Occupational Health and Safety Act ENTERING EXCAVATIONS The works surveyor and other employees must only enter excavations that satisfy the Victorian Occupational Health and Safety Act PROTECTION OF SERVICES In addition to the requirements of Central Highlands Water special precautions must be taken when surveying near any major service. Major services include hydrocarbon pipelines, transmission pressure and high pressure gas pipelines, electric cables, overhead power cables, coaxial cables, major drains, sewers and water mains. For these services, the works surveyor must: Take special care to ensure that the services are protected in accordance with the conditions specified by the controlling corporation Arrange for a representative from the controlling corporation to be present, unless Central Highlands Water directs otherwise, whenever the location of the services is being proved Arrange with the appropriate corporation for the closure and subsequent restoration of any service that must be shut down while the survey is in progress Adopt a method for uncovering and protecting the service from damage if the service will be uncovered and left exposed, to the satisfaction of the controlling corporation Immediately inform the Owner or controlling corporation of any damage or interference to any service, structure or property 3.5 TREES Trees which affect the performance of the survey must not be removed without obtaining written permission from the owner and the controlling council or corporation. The works surveyor must not damage, clear or cut back trees and shrubs more than is necessary for the survey in accordance with the requirements of the planning scheme. The lopping of trees must be carried out in a professional manner using appropriate tools. The extent of lopping must be approved by the nominated representative before commencing the work. Tree roots 50mm in diameter or larger must not be cut. The stumps of all branches and roots that are cut or broken must be trimmed and painted with an appropriate sealant. The works surveyor must arrange the disposal of the trunk, root system and debris of all trees and shrubs cut down or lopped, in the course of survey activities. 12 LAND DEVELOPMENT - SURVEY MANUAL

13 3.0 PROTECTION OF PEOPLE, PROPERTY AND ENVIRONMENT 3.6 PRIVATE AND PUBLIC PROPERTIES The works surveyor is liable for the cost relating to any damage caused by the survey to adjacent property. Where survey work is carried out in private property or lands owned by councils or other authorities, whether in an easement, reserve or otherwise, the works surveyor must: Confine the survey to an area agreed upon between the owner of the land and the works surveyor Refer any case where the owner of that land disputes the works surveyor s right of entry, or the owner and works surveyor cannot agree on the area of operations, to the nominated representative. The works surveyor must not attempt to purchase rights already possessed by Central Highlands Water from the owner Minimise damage to vegetation Restore all services, drains, fences, structures and surfaces affected by the survey to the original surface and condition Carry out restoration work immediately on the completion of the survey 3.7 ESTABLISHED SURVEY MARKS The consultant must: Ensure that sufficient title pegs are maintained during construction. Eg. pegs of close proximity to the works Ensure that established bench marks are maintained during construction LAND DEVELOPMENT - SURVEY MANUAL 13

14 4.0 CADASTRAL SURVEY REQUIREMENTS AND RESPONSIBILITIES This section describes Central Highlands Water s requirements for the supply of survey services for agreement works. 4.1 DEVELOPER S RESPONSIBILITIES The developer is responsible for providing the information listed in surveyor s responsibilities. To do this, they must appoint a licensed surveyor to act on their behalf. 4.2 SURVEYOR S RESPONSIBILITIES The licensed surveyor must, both for and on behalf of the developer: PRIOR TO THE COMMENCEMENT OF THE WORKS Obtain information relating to the Map Grid of Australia (MGA) coordinated permanent marks and connect the subdivision to at least two (2) coordinated permanent marks. Any anomalies found in the values of those coordinated marks will be brought to the attention of the Consultant and Office of the Surveyor General (OSG) In the case of anomalies, the coordinates to be adopted are to be settled with OSG prior to the commencement of the Works. More details are described in Connection of Subdivision to MGA in the following section Provide the required subdivisional and related information on behalf of the Developer for submission to Central Highlands Water, both in hard copy and digital format. For digital format requirements, refer to Subivisional Digital Input Manual Ensure that the Verification Form - Acceptance of Subdivision Digital Information electronically is completed Obtain information relating to the Australian Height Datum (AHD) in the vicinity of the subdivision Any anomalies found in the values of the AHD benchmarks will be brought to the attention of both the Consultant and OSG In the case of anomalies, the levels to be adopted are to be settled with OSG prior to the commencement of work Ensure that a minimum of two (2) AHD benchmarks per stage are placed. There must be sufficient benchmarks provided to allow the proper and efficient construction of the Works Submit all details of the AHD benchmarks to Central Highlands Water. The AHD values of these marks must be certified as being correct in accordance with the requirements of Table 3 - Levelling Surveys in Schedule 6 of the Survey Co-ordination (Surveys) Regulations DURING THE CONSTRUCTION OF THE WORKS At the request of the developer and as recommended by the consultant, provide assistance to the consultant in survey matters, including the repegging of subdivisional boundaries in order to satisfy the requirements of Central Highlands Water UPON COMPLETION OF THE WORKS Ensure that the final repegging of the subdivision is done to enable the lodging of the required Section 20A (Subdivision Act 1988) Statement to the relevant local corporation Ensure that the Verification Form - Acceptance of Digital Information is completed 14 LAND DEVELOPMENT - SURVEY MANUAL

15 5.0 CONNECTION TO MGA 5.1 GENERAL The licensed surveyor is responsible for the survey procedures, including the preparation of a plan in accordance with the requirements of the relevant legislation and the appropriate authorities. The licensed surveyor must connect the subdivision to the Map Grid of Australia (MGA) and Australian Height Datum (AHD) marks, where such marks exist within 1km of the subdivision. 5.2 CONNECTION OF SUBDIVISION TO MGA The Licensed Surveyor must connect the subdivision to permanent marks coordinated to the Map Grid of Australia (MGA) within declared survey coordination area or where coordinate marks exist within 1km of the subdivision. The subdivision plan will list the identifier and coordinates of each mark, together with four designated points on the title boundaries within the subdivision. Two of the four points are to be at opposite extremes of the subdivision and the other two points must be evenly distributed between. Exceptions to this requirement include: Owners corporation subdivisions Subdivision of buildings Subdivisions not requiring new Central Highlands Water services Subdivisions of 3 lots or less that are not part of a staged development do not need to be coordinated. Contact Central Highlands Water for confirmation whether the subdivision is within an established area. The licensed surveyor must obtain details of permanent marks coordinated to MGA from Office of the Surveyor General (OSG). 5.3 NOTIFICATION OF INACCURACIES The licensed surveyor must notify OSG of any anomalies in the values of the coordinated marks. OSG will provide assistance when anomalies are found with MGA information. 5.4 ACCURACY The accuracy of the traverse to coordinated marks must be of the same standard of precision as required for the classification of the survey being connected. Refer to Surveyors (Cadastral Surveys) Regulations LAND DEVELOPMENT - SURVEY MANUAL 15

16 5.0 CONNECTION TO MGA 5.5 ESTABLISHING HORIZONTAL CONTROL WHERE A DESIGN SPECIFIES MGA VALUES This is a requirement where a design specifies MGA coordinates. 5.6 SUPPLY OF HORIZONTAL CONTROL INFORMATION (MGA) The consultant must submit to Central Highlands Water a copy of the design plan showing the location, description and MGA values at least five (5) working days before the commencement of construction. The plan must have: Two (2) stable MGA marks (minimum) Three (3) ties from identifiable features to each mark 5.7 ACCURACY The relative accuracy of the coordinated marks must enable the works to be constructed within the required tolerance. 16 LAND DEVELOPMENT - SURVEY MANUAL

17 6.0 CONNECTION TO AHD 6.1 GENERAL The licensed surveyor must connect the subdivision to permanent marks connected to Australian Height Datum (AHD) marks. These marks may be the same as those used for the Map Grid of Australia (MGA) connection. Levelling procedures are explained in the Survey Practice Handbook, Volume 2. The following types of subdivisions are exempt from this requirement: Subdivision of buildings Subdivisions not requiring construction of water or sewer mains. The licensed surveyor must obtain details of permanent AHD bench marks from OSG. 6.2 ESTABLISHING VERTICAL CONTROL (AHD) The licensed surveyor must place a minimum of two (2) stable AHD benchmarks evenly over each stage of the subdivision. This provides vertical control of the as-constructed water supply and sewerage work. AHD Benchmarks must be of an enduring nature eg. star picket flush with the ground, nail or rivet in a concrete structure, nail/spike in poles or fence posts. The benchmarks must have an identifying number attached or nearby, and be marked with paint or flagging tape. Stable AHD benchmarks must be placed in a position where they will not be disturbed during construction. They may be surrounded by star pickets for protection from machinery. 6.3 SUPPLY OF VERTICAL CONTROL INFORMATION (AHD) The consultant must submit to Central Highlands Water a copy of the Works design plan showing the location, description and level values of the level datum as part of the requirements of the Design Verification Form. The plan must have: Two (2) permanent marks supplied by OSG with AHD levels used for datum Two (2) stable AHD benchmarks (within the subdivision or per stage) Three (3) ties from identifiable features to each stable AHD benchmark Been established by the licensed surveyor 6.4 ACCURACY Benchmarks must be placed to the nearest 0.001m and other AHD values must be quoted to the nearest 0.01 metres and be to third order precision in accordance with Table 3 - Levelling Surveys in Schedule 6 of the Survey Co-ordination (Surveys) Regulations. LAND DEVELOPMENT - SURVEY MANUAL 17

18 7.0 SUPPLY OF SUBDIVISION INFORMATION 7.1 APPLICATION FOR NOTICE OF AGREEMENT When the developer submits an Application for Notice of Agreement Form to Central Highlands Water, the Application must include a computed plan of the subdivision that has been certified by a licensed surveyor. The plan must have: All lots numbered Crown land and/or reserves labelled Super or stage lots indicated Lot areas shown, including areas for reserves Road names shown A print showing AHD contours and/or spot levels A print showing outlines of existing buildings A dashed line with bearing distance showing a connection to a floating lot 7.2 PLANS A paper copy of the plan is required for all developments. If the development comprises 4 or more lots, the plan must also be submitted in digital format. The digital format must be in accordance with Subdivisional Digital Input Manual. The hard copy of the plan must show: The co-ordinates of the two (2) permanent marks co-ordinated to MGA The MGA coordinates of the four designated title boundary points within the subdivision (refer to Connection to MGA in clause 5) The Information containing the digital data must be: Labelled with the supplier s name, and the Title Office Plan of Subdivision (PS) number of the subdivision Central Highlands Water job number In AutoCAD (.DXF) format Note that all of this information must be certified by a licensed surveyor. 18 LAND DEVELOPMENT - SURVEY MANUAL

19 8.0 AS-CONSTRUCTED TOLERANCES 8.1 WATER TOLERANCES ON AS-CONSTRUCTED WORK 8.2 GENERAL Record all water mains, associated structures and appurtenances in their true positions in accordance with the tolerances specified in Clauses 8.3 and 8.4 below. 8.3 HORIZONTAL TOLERANCES WATER MAINS AND ON-LINE STRUCTURES (E.G. VALVE ACCESS CHAMBERS) Do not exceed positional tolerance as follows: Water Main mm lateral displacement from the water main alignment Structures - lateral displacement as for water main, plus 6100mm displacement along the water main axis PROPERTY CONNECTIONS Do not exceed positional tolerances as follows: Position of property connection 6100mm displacement along water main axis Position of water meter 6100mm displacement from actual position 8.4 VERTICAL TOLERANCES WATER MAINS, PROPERTY CONNECTIONS AND STRUCTURES Do not deviate the inverts of new water mains, property connections and structures from the constructed level by more than 20mm higher or lower. LAND DEVELOPMENT - SURVEY MANUAL 19

20 8.0 AS-CONSTRUCTED TOLERANCES 8.5 SEWER TOLERANCES ON AS CONSTRUCTED WORK Record all gravity and vacuum sewers, associated structures and appurtenances in their true positions in accordance with the tolerances specified in Clauses 8.6 and 8.7 below. 8.6 HORIZONTAL TOLERANCES SEWERS AND ONLINE STRUCTURES (EG. MHS, MSS, TMSS) Do not exceed positional tolerances as follows: Sewer main mm lateral displacement from the sewer alignment Structures mm displacement (from constructed position) along the sewer axis PROPERTY CONNECTION SEWERS Do not exceed positional tolerance as follows: Position of property connection branch 6100mm displacement (from constructed position), along sewer axis Property connection riser, inspection opening and surface fittings Same displacement as for the connection branch, plus 6100mm displacement, along the property connection sewer axis 8.7 VERTICAL TOLERANCES SEWERS AND STRUCTURES Do not deviate the inverts of new sewers, property connection sewers and structures from the constructed level by more than 65mm. PROPERTY CONNECTION RISERS AND INSPECTION OPENINGS Do not deviate the inverts of property connection risers and inspection openings from the constructed level by more than 65mm. Any variance outside the above mentioned tolerances, in the supply of water or sewer as-constructed information, will result in a major non-conformance being issued, as stated in the Quality Assurance Requirements section of the Land Development Manual. 20 LAND DEVELOPMENT - SURVEY MANUAL

21 9.0 GENERAL REQUIREMENTS This section of the survey manual describes the as-constructed survey information that must be recorded for water supply and sewerage services. The as-constructed information is provided by the works surveyor. As-constructed details of the Works must be supplied to Central Highlands Water in digital format in accordance with clause 16. A hard copy plan of the digital information must also be submitted at a scale of 1:1000 for water supply and 1:500 for sewerage. As-constructed sewerage information must also be submitted on fully completed as-constructed field note(s) along with any other relevant data. (Example field notes displayed in Appendix H) As-constructed water supply information must also be submitted on fully completed as-constructed field note(s) along with the relevant data tables. (Example field notes and data tables displayed in Appendices B, C and D) The works surveyor must supervise the recording of: The horizontal and vertical position of the water supply and sewerage assets and associated structures Information to enable the constructed position of the asset to be compared to the design drawings Pipe, structure, fitting and construction characteristics As-constructed details of the Works must be provided to Central Highlands Water with either the Verification Form Acceptance of Digital Information, or the Verification Form Acceptance of Field Note Information at the completion of the Works The as-constructed position must be related to: AHD for level except for water mains where a depth from finished surface to top of pipe is normally required The pegged title boundaries and or MGA for horizontal alignment 9.1 RECORDING OF AS-CONSTRUCTED SEWERAGE ASSETS LAND DEVELOPMENT - SURVEY MANUAL 21

22 9.0 GENERAL REQUIREMENTS 9.2 DEFAULTS FOR HARD COPY FIELD NOTES Unless otherwise specified the following defaults will apply to as-constructed sewerage assets. Item Maintenance hole construction method Maintenance hole shape Maintenance hole construction material Pipe shape Trench backfill Default Pre-cast Conical truncated Concrete Circular Excavated material Pipe material UPVC S.E.H. (Sewer Extra Heavy) Joint type Solvent cement All values not the default must be noted on the field note in a suitable position. 9.3 COMMON ACCESS POINTS ACCEPTABLE ABBREVIATIONS FOR HARD COPY FIELD NOTES Junction with a drop Junction Straight through Straight through with a drop Bend Bend with a drop End of pipe (no reducer) Reducer (line ends with a connection out of a reducer Maintenance hole Square maintenance hole Terminal maintenance shaft Maintenance shaft Pump station Vent pit Drop maintenance hole Multiple drop maintenance hole Gas check maintenance hole JDP J ST SDP B BDP EP RED MH SQM TMS MS PS VP DMH MDMH GCMH 22 LAND DEVELOPMENT - SURVEY MANUAL

23 10.0 SERVICE OF NOTICES 10.1 NOTICE TO PROPERTY OWNERS Before conducting survey works on a property, the Developer must ensure that the property occupier is given at least three (3) working days notice. If the Works extend beyond the boundary of the site, notice must also be given to the adjacent owner or occupier NOTICE TO THE CONTRACTOR The works surveyor must liaise with the contractor to ensure that: The as-constructed detail is recorded as the Works proceed All recording of the as-constructed detail is completed before the commencement of backfilling 10.3 NOTICE TO THE NOMINATED REPRESENTATIVE The works surveyor must notify the nominated representative as soon as unsatisfactory variance is detected between the as-constructed detail and the design RECORD OF NOTICES The works surveyor must retain copies of all notices for audit purposes. LAND DEVELOPMENT - SURVEY MANUAL 23

24 11.0 WATER SUPPLY The works surveyor must supervise the recording of the horizontal and vertical position of the water pipes and fittings. The following as-constructed details are required for Central Highlands Water s management of assets. For the purposes of presenting the information, water pipe sections are defined by nodes. These are placed at change of size, change of material, change of month laid, pipe intersections, stop valves and control valves 11.1 VERTICAL POSITION Information to be submitted. Depth from finished surface level to top of pipe at: Intersection of pipes Mid points of curves Property connections Vertical bends Change of pipe characteristics Fittings End of mains Where the depth varies by more than 0.20 metres due to significant changes in surface level. Eg. road crossing or drain crossing 11.2 HORIZONTAL POSITION Information to be submitted. Horizontal position at: Horizontal bends Vertical bends Changes in direction Fittings Changes in pipe characteristics Intersections End of mains Property connections (at the intersection of the main and at the property end) 24 LAND DEVELOPMENT - SURVEY MANUAL

25 11.0 WATER SUPPLY 11.3 PIPE JUNCTIONS Item Point to be recorded Requirements Digital Format Field note Horizontal position Intersection of line of water mains Location of intersection point of line of water pipe sections MGA Co-ordinates Distance along, offset from and ties from pegged title boundary Vertical position Depth Depth to top of pipe from natural surface level Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m 11.4 ENDS OF MAINS Item Point to be recorded Requirements Digital Format Field note Horizontal position End of water mains Location of the blank end cap of a water main MGA co-ordinates Distance along, offset from and ties from pegged title boundary Vertical position Depth Depth to top of pipe from natural surface level Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m LAND DEVELOPMENT - SURVEY MANUAL 25

26 11.0 WATER SUPPLY 11.5 CHANGES OF DIRECTION Item Point to be recorded Requirements Digital Format Field Note Horizontal position Intersection point at changes of direction of water main Location of bends or change of direction MGA Co-ordinates Distance along, offset from and ties from pegged title boundary Vertical position Depth Depth to top of pipe from natural surface level Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m 11.6 FITTINGS Item Point to be recorded Requirements Digital Format Field Note Horizontal position Water fittings e.g. valves fireplugs etc. Location at centre axis of any water fittings MGA co-ordinates Distance along, offset from and ties from pegged title boundary Vertical position Depth Depth to top of fitting from natural surface level (if fitting below ground) Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m 26 LAND DEVELOPMENT - SURVEY MANUAL

27 11.0 WATER SUPPLY 11.7 CHANGE OF PIPE CHARACTERISTICS Item Point to be recorded Requirements Digital Format Field note Horizontal position Where any changes in pipe characteristics occur Position of any changes in characteristics. E.g. change of material, pipe size, date laid MGA Co-ordinates Distance along, offset from and ties from pegged title boundary Vertical position Depth Depth to the top of pipe, at the change of characteristics Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m LAND DEVELOPMENT - SURVEY MANUAL 27

28 11.0 WATER SUPPLY 11.8 PROPERTY CONNECTIONS TO WATER Item Point to be recorded Requirements Digital Format Field Note Horizontal position End of branch Intersection of line of water main and line of connection Location of end of pipe Location of intersection point of line of water main and line of connection MGA co-ordinates MGA co-ordinates. Chainages indicated Distance along, offset from and ties from pegged title boundary Distance along, offset from and ties from pegged title boundary Horizontal distance Length of branch Distance along the branch from the intersection of the water main and the property connection to the end of the branch MGA co-ordinates Distance along the branch, for example 3.02m Offset distance End of connection Distance from the nearest title corner of the property serviced to the end of the branch. The distance is parallel to the title boundary. Offset distance indicated Offset distance, for example, 1.35m Alternatively 2 ties can be used from title corners directly to the end of the branch Vertical position Depth Depth to top of pipe from natural surface level Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m 28 LAND DEVELOPMENT - SURVEY MANUAL

29 11.0 WATER SUPPLY 11.9 CURVED WATER MAINS VERTICAL WATER MAIN Item Point to be recorded Requirements Digital Format Field note Horizontal position Start and finish of curve (tangent point) Mid point of curve Locate tangent points at start and finish of curve Locate mid point of curved water mains MGA co-ordinates MGA co-ordinates Distance along, offset from and ties from pegged title boundary Distance along, offset from and ties from pegged title boundary Vertical position Depth Depth of pipe at tangent points at the start and finish of the curve Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m HORIZONTAL CURVED WATER MAIN Item Point to be recorded Requirements Digital Format Field note Horizontal position Start and finish of curve (tangent point) Mid point of curve Locate tangent points at start and finish of curve Locate mid point of curved water mains MGA co-ordinates MGA co-ordinates Distance along, offset from and ties from pegged title boundary Distance along, offset from and ties from pegged title boundary Vertical position Depth Depth of pipe at tangent points at the start and finish of the curve Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m Depth recorded to one decimal place, and preceded by the letter D e.g. D1.9m LAND DEVELOPMENT - SURVEY MANUAL 29

30 11.0 WATER SUPPLY DIGITAL INFORMATION The works surveyor must supply to Central Highlands Water a digital file containing: DXF File (see clauses 16 and 17) NON-DIGITAL INFORMATION The works surveyor must supply to Central Highlands Water a set of fully completed as-constructed field note(s) and data forms. See clause 9 and Appendices B,C,D and H DETAILS TO BE RECORDED FOR WATER MAINS Item Pipes Hydrants Fittings Property connection points Other Note for submission of digital data For Example Diameter Type, e.g.. CICL, DICL, MSCL, MDPE/HDPE, Copper, UPVC Locking ring pipe jointing Pipes in conduit Tees Crossovers Bypasses Offtakes Cross connections Above ground Fireplugs Offset fireplugs Tees Vertical or horizontal bends Reducers, tapers Scours Tapping arms Blank ends Valves, e.g. stop, air, non-return, control Fire services (and size) Swabbing pit Location of property connection showing tie distance to nearest pegged title boundary and measurement to main ferrule tap Depth recorders Pressure recorders Flow recorders Electrolysis points Extent of abandoned main Abandoned mains are only to be recorded on hard copy field notes 30 LAND DEVELOPMENT - SURVEY MANUAL

31 11.0 WATER SUPPLY OTHER DETAILS TO BE RECORDED In addition to the horizontal and vertical position, the following details (and if applicable, relevant positions) must also be recorded: Date of construction Was the main laid with detectable tape and/or tracer wire Was the main laid in a combined trench with other services Are there any special conditions associated with the pipe - Laid on special bedding - Concrete around the pipes - Sleeving - Bridge pipe - Exposed main Job description (e.g. road names) Central Highlands Water job number Contractors name Financial costs of the project (see clause 16) Consultants name LAND DEVELOPMENT - SURVEY MANUAL 31

32 12.0 SEWERAGE The works surveyor must supervise the recording of the following information for sewerage pipes and fittings SEWER ACCESS POINTS For the purposes of presenting the information, sewer pipe sections are defined by access points, for example, maintenance holes, inspections shafts, ends of pipe, reducers and pipe junctions. They are also defined by changes in grade, vertical curves and fittings, intersections, sidelines greater than 15m in length. This excludes property branches MAINTENANCE HOLES The horizontal position, cover and invert levels of the maintenance hole. The surface level must be recorded if it differs from the cover level. 32 LAND DEVELOPMENT - SURVEY MANUAL

33 12.0 SEWERAGE Item Point to be recorded Requirements Digital Format Field note Horizontal position The intersection point of pipes into and out of Maintenance Hole. If there is more than one I.P. or the I.P. does not exist, or does not fall within the maintenance hole, then record centre axis of the maintenance hole. The offset of the pipe centre line to the title boundary MGA co-ordinates Sufficient measurements to enable plotting. This may include distance along, and offset from or direct ties from the pegged title boundary and/ or MGA co-ordinates Cover level Centre axis as shown of maintenance holes AHD levels AHD levels Vertical position Invert level The invert level is to be taken at the inside edge of the pipe within the maintenance hole. This is the figure that is recorded. See Appendix A Invert level positions AHD levels AHD levels Stub pipes The invert level of the stub pipe AHD levels AHD levels LAND DEVELOPMENT - SURVEY MANUAL 33

34 12.0 SEWERAGE 12.3 DETAILS TO BE RECORDED FOR MAINTENANCE HOLES Item Maintenance hole size Type Internal shape Material Construction method Date of construction Overflow level For Example Internal diameter, for example, 1070mm Straight through, junction, drop, etc. Conical, truncated or circular Construction material, for example, concrete, polyethylene. Cast-in-situ or precast Date of installation Level at which the maintenance hole overflows 12.4 TERMINAL MAINTENANCE SHAFTS The horizontal and vertical position, cover level and invert level of the terminal maintenance shaft Item Point to be recorded Requirements Digital Format Field Note Horizontal position The centre axis of the terminal maintenance shaft Centre axis of the terminal maintenance shaft MGA Co-ordinates Running chainage from downstream Maintenance Hole, for example, 31.05m, and offset and direct ties to pegged title boundary Vertical position Invert level The invert level is to be taken at the inside edge of the pipe within the terminal maintenance shaft. See Appendix A Invert Level Positions AHD levels AHD levels Cover level Reduced level of cover at centre axis of terminal maintenance shaft AHD levels AHD levels 34 LAND DEVELOPMENT - SURVEY MANUAL

35 12.0 SEWERAGE 12.5 MAINTENANCE SHAFTS The horizontal and vertical position, cover level and invert level of the maintenance shaft Item Point to be recorded Requirements Digital Format Field Note Horizontal position The centre axis of the maintenance shaft Centre axis of the maintenance shaft MGA co-ordinates Running chainage from downstream maintenance hole, for example, 31.05m, and offset and direct ties to pegged title boundary Vertical position Invert level The invert level is to be taken at the inside edge of the pipe within the maintenance shaft. See Appendix A Invert Level Positions AHD levels AHD levels Cover level Reduced level of cover at centre axis of maintenance shafts AHD levels AHD levels LAND DEVELOPMENT - SURVEY MANUAL 35

36 12.0 SEWERAGE 12.6 ENDS OF PIPE AND REDUCERS The horizontal position, invert level and surface level of the end of pipe or reducer For digital submission, the surface level is considered to be a cover level Item Point to be recorded Requirements Digital Format Field Note Horizontal position The centre line of the end of pipe or reducer End of pipe or reducer MGA co-ordinates Running chainage from downstream maintenance hole/access point to end of point or reducer and offset and direct ties from pegged title boundary Vertical position Invert level Natural surface level Invert level at end of pipe or reducer Natural surface level at end of pipe AHD levels AHD levels AHD levels AHD levels 36 LAND DEVELOPMENT - SURVEY MANUAL

37 12.0 SEWERAGE 12.7 PIPE JUNCTIONS The horizontal position, invert level and surface level of the pipe junction. For digital submission, the surface level is considered to be a cover level. Item Point to be recorded Requirements Digital Format Field Note Horizontal position Intersection of centre line of sewers Location of intersection point of line of sewer pipe sections MGA co-ordinates Running chainage from downstream maintenance hole/access point to intersection of pipe sections. Vertical position Invert level Invert level projected on grade to intersection point AHD levels AHD levels Natural surface level Natural surface level AHD levels AHD levels LAND DEVELOPMENT - SURVEY MANUAL 37

38 12.0 SEWERAGE 12.8 PIPE SECTIONS (MAINTENANCE HOLE TO MAINTENANCE HOLE) The horizontal position and vertical position of each pipe section. Item Point to be recorded Requirements Digital Format Field Note Horizontal length Length of sewer line The horizontal length of the pipe section MGA co-ordinates at each end of length indicated Length, for example, 35.02m Running chainages The corners of pegged title boundaries Running chainages along the sewer line locating the corners at right angles to the sewer line Running chainages, for example, 23.07m Horizontal position Downstream and upstream ends of the pipe and where there are changes in direction Horizontal position of the centre of the pipe. MGA co-ordinates offsets indicated Distance along and offset from the pegged title boundary Vertical position Invert level Upstream and downstream. Upstream invert level should match outlet level of access chamber Refer to clause 12.2 on maintenance holes and also clause curved sewers. AHD levels AHD levels 38 LAND DEVELOPMENT - SURVEY MANUAL

39 12.0 SEWERAGE 12.9 DETAILS TO BE RECORDED FOR PIPE SECTIONS Item Grade Flow arrow Nominal diameter Shape Material Jointing Construction method Bedding material Soil type For example The grade of the pipe section. For example, 1 in 50, 1 in 45. Do not specify the grade as a percentage. The direction of flow through the pipe section. Nominal diameter of the pipe, for example, 150 mm. Shape of the pipe section, for example, circular, ovoid. Type of pipe, for example, vitrified clay, concrete, UPVC. Type of jointing, for example, rubber ring. Method of construction, for example, open cut, power bored, tunnel. Majority of bedding material, for example, crushed rock. Soil type of the excavation, for example, clay, sand, reef. Date constructed Date of installation, for example, Backfill material No. of property branch sewers Alternative construction method Alternative bedding material Alternative backfill Shaft chainage Concrete bulkheads Bridge pipe Sleeving The backfill used for the majority of the length, for example, sand. For digital submission the number of property branches is required. Method of construction, for example, open cut, power bored, tunnel, chainage of start and finish. Alternative bedding material. Include depth below invert and start and finish chainage The alternative backfill including type of material, start and finish chainages. The horizontal chainage of the shaft. Horizontal position and spacing of concrete bulkheads, start and finish chainages. (see WSA Sewerage Code of Australia standard drawing SEW-103) Horizontal position of any bridge pipe, start and finish chainages. (See WSA Sewerage Code of Australia standard drawing SEW-106) Horizontal position of any pipe sleeving, start and finish chainages. LAND DEVELOPMENT - SURVEY MANUAL 39

40 12.0 SEWERAGE CURVED SEWERS VERTICAL CURVED SEWERS Item Point to be recorded Requirements Digital Format Field Note Horizontal position Start and finish of curve Locate tangent points of curve, that is, change of grade at start and finish of curve and one point approximately mid way along the curve MGA co-ordinates Chainage indicated Running chainage from downstream maintenance hole Vertical position Invert levels Invert level of pipe at tangent points at the start and end of the curve and one point approximately mid way along the curve AHD levels AHD levels 40 LAND DEVELOPMENT - SURVEY MANUAL

41 12.0 SEWERAGE HORIZONTAL CURVED SEWERS Item Point to be recorded Requirements Digital Format Field Note Horizontal position Start and finish of curve (tangent point) Mid point of curve Locate tangent points at start and finish of curve Locate mid point of curved sewer MGA co-ordinates MGA co-ordinates Running chainage from downstream maintenance hole and offset and tie(s) from pegged title boundary Running chainage from the downstream maintenance hole and offset and tie(s) from pegged title boundary Vertical position Invert levels Invert level of pipe at tangent points at the start and finish of the cure AHD levels AHD levels LAND DEVELOPMENT - SURVEY MANUAL 41

42 12.0 SEWERAGE PROPERTY BRANCH SEWERS Item Point to be recorded Requirements Digital Format Field Note Horizontal position End of branch Intersection of line of sewer and line of connection Location of end of pipe. Location of intersection point of line of sewer and line of connection. MGA co-ordinates MGA co-ordinates. Chainages indicated Running chainage from downstream maintenance hole along the line of the sewer to a point square to the end of the branch. Running chainages from downstream maintenance hole to the intersection point of the line of the sewer and line of connection. Horizontal distance Length of branch Distance along branch to jump up Distance along the branch from the intersection of the sewer line and the property branch to the end of the branch. Distance along the branch from the intersection of the sewer line and the property branch to the jump up. MGA co-ordinates MGA co-ordinates. Distance indicated if more than 1.00m Distance along the branch, for example 3.02m Distance along the branch to the jump up. 42 LAND DEVELOPMENT - SURVEY MANUAL