specification surveys technical uofa

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DIVISION OF SERVICES AND RESOURCES

PROPERTY SERVICES

Specification forSurvey Work




PROPERTY SERVICES

TABLE OF CONTENTS 1

Preface 2

1.0 General 3

1.1 Terminology 3

1.2 Units of measurement 3

2.0 Procedure 3

2.1 Survey Control Netw ork 3

2.2 Origin of Coordinates 4

2.3 Vertical Control 4

2.4 Horizontal Control 4

2.5 As-Constructed Surveys 5

2.5.1 Service and Utilities 5

2.5.1. a Electr ica l and Mechanica l Services 5

2.5.1. b Hydr au l ic Serv ices 5

2.5.1. c Other serv ices 5

2.5.2 Existing services 5

2.5.3 Surface and Above Ground Features 6

2.5.3a St ru c tu res – above g round bu t no t l im i ted to : 6




PROPERTY SERVICES

PREFACE

SCOPE

The scope of this specification embraces the preparation of survey plans for TheUniversity of Adelaide including topographic or detail and “as constructed” surveysand specifically the requirements and methodology for surveyors and contractors inadding to and maintaining coherent, consistent and accurate survey data over the

campus.This specification is for the correct use and management of The University of Adelaide survey control network which is an essential part of maintaining thisspatial integrity.

APPLICATION.

The specification indicates required methods of presenting survey information ondrawings before, during and after construction works. Such drawings andinformation should conform to the requirements as directed by The University of Adelaide.




PROPERTY SERVICES

SURVEY WORK

1.0 General

1.1 Terminology

• AHD Australian Height Datum

• DBM Deep Bench Mark

• PSM Permanent Survey Mark

• PM Permanent Mark

1.2 Units of measurement

The following units shall be adopted:

• Linear measurements shall be in metres

• Vertical measurements shall be in metres

• Azimuth shall be on the local plane rectangular grid system

2.0 Procedure

2.1 Survey Control Netw ork

Copies of the latest established control networks plan is attached and isavailable in DWG format on request to Property Services.

The coordinates and levels of the DBMs and PSMs depicted on this plan werecorrect at the time of installation but may be subject to the effects of subsidence

and/or disturbance.

Onus is on the individual contractor to report any errors found between networkmarks to The University of Adelaide, Property Services, Facilities Records and

h t bl di i f d l ti f Th U i it f




PROPERTY SERVICES

2.2 Origin of Coordinates

The University of Adelaide North Terrace Campus coordinate origin is based onPSM 6628/13810 at the corner of Victoria Drive and Frome Rd with a referencebearing to PSM 6628/13827 at the corner of Frome Road and North Terrace. Allcoordinates supplied in the survey control network drawing are at 1:1 ground

scale i.e. scale factor of 1.0. MGA94 coordinates to the PSM's as at July 4

th

2007 are:

PSM 6628/13810Easting: 281300.216Northing: 6133568.917Elevation: 28.231 RL AHD

PSM 6628/13827Easting: 281481.748

Northing: 6133111.945Elevation: 38.253 RL AHD

2.3 Vertical Control

All levels are to be recorded in AHD (Australian Height Datum) unless specified

otherwise. The contractor shall adopt a reliable benchmark or establish areliable benchmark by application of appropriate survey procedures from reliable

control marks such as a Permanent Survey Mark (PSM) or Deep Bench Mark(DBM).

Where any unacceptable discrepancies in control marks due to land settlement,disturbance or other factors are apparent , a discrepancy report will be preparedby the contractor and referred to The University of Adelaide, Property Services,

Facilities Records for resolution prior to setting out of any works or any as-constructed or detail surveys are performed.

2.4 Horizontal Control

The horizontal control for each project shall be based on the existing survey




PROPERTY SERVICES

2.5 As-Constructed Surveys

All as-constructed drawings shall be surveyed in 3 coordinates: Easting,Northing and Height (AHD). This will enable The University of Adelaide, PropertyServices, Facilities Records to establish the geometric relationship with all otherprojects.

As-constructed survey providing a description, horizontal and vertical locationsof the following services and features shall be obtained in accordance with thefollowing requirements:

2.5.1 Service and Utilities

Prior to any backfilling or covering, information on all underground services shall

be obtained in situ including but not limited to:

2.5.1. a Electr ica l and Mechanica l Services

• Electrical cables – high voltage & low voltage

• Earth stakes

• Telecommunications cables

• Data cables

• Fibre optic cables

• Communication cables

2.5.1. b Hydr au l ic Serv ices

• Water mains

• Sewer pipes and sumps• Stormwater pipes

• Irrigation and sprinkler lines

2.5.1. c Other serv ices

• Gas lines

• Reclaimed water pipes• Dedicated fire water pipes

• Compressed Air

• Oil lines

Alternatively where immediate backfilling is required, the contractor shall placesuitable lengths of minimum 50mm PVC pipes vertically plumbed down onto theservice prior to backfilling. The pipe frequency of location should reflect anyservice direction change of grade or particular fittings at each location Where




PROPERTY SERVICES

2.5.3 Surface and Above Ground Features

Survey information about the following surface and above ground features shallbe obtained in situ immediately after each part of the works is complete.

2.5.3a St ru c tu res – above g round bu t no t l im i ted to :

•

Buildings, concrete slabs and building detail• Fences and gates

• Pits, manholes and inspection points

• Valves and meters

• Headwalls and drainage structures

• Service markers

• Road and general signage

2.5.3b Pavemen t s and new roadw ork - i nc lud ing :

• Finished pavement surfaces

• Roads, kerbing (including back of kerb, water table invert, and edge of bitumen)

• Spoon drains and open drains

2.5.3c Pi ts

• All pits larger then 600mm square require size, depth and orientation of the pit

lid. Similarly all circular pits larger then 600mm should have diameter recorded.

3.0 Data Required for Submission

3.1 Electronic Copies Required

• 1 copy of digital data in 2d AutoCAD DWG format (edited drawing for plotting)including any surface triangulation supplied in 3d.

• 1 copy of digital data in 3d AutoCAD DWG format (3d points and linework)

• 1 comma delimited file (*.csv) of survey pickup in Point, Easting, Northing, RL,

Field Code format

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