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Advance Scanning Services in Perth : http://www.advancescanning.com.au Underground Utility locator / Concrete scanning Perth: http://www.advancescanning.com.au/services/ In this presentation: Subsurface Utility Engineering Location and damage prevention of underground utilities Understanding Subsurface utility engineering Why Subsurface utility engineering important? Mechanics of utility engineering important Understanding utility engineering important Understanding SUE: Subsurface Utility engineering is an engineering practice that encompasses the management or risk associated with many aspects of infrastructure project management such as: Underground utility relocation Infrastructure planning and estimation 3D mapping of utilities for design Correct identification and location of underground utilities Road and Highway upgrades For more details, contact us: http://www.advancescanning.com.au/contact/ More Services from Advance Scanning in Perth, WA and Australia: Subsurface Utility Engineering: http://www.advancescanning.com.au/services/subsurface-utility-engineering/ Concrete Scanning: http://www.advancescanning.com.au/services/concrete-structure-imaging/ Underground Utility Locating: http://www.advancescanning.com.au/services/underground-utility-locating/ Road and Ballast Imaging: http://www.advancescanning.com.au/services/road-and-ballast-imaging/ Bridge Scanning and Structure Analysis: http://www.advancescanning.com.au/services/bridge-scanning-structure-analysis/ Subsurface Layer Mapping: http://www.advancescanning.com.au/services/subsurface-layer-mapping/ Geotechnical Investigations: http://www.advancescanning.com.au/services/geotechnical-investigations/ Archaeological Investigations: http://www.advancescanning.com.au/services/archaeological-investigations/ Subsurface UXO and UST locating: http://www.advancescanning.com.au/services/subsurface-uxo-ust-locating/ GPR 3D Imaging: http://www.advancescanning.com.au/services/gpr-3d-imaging/ Surveying: http://www.advancescanning.com.au/services/surveying/ Vacuum Excavation: http://www.advancescanning.com.au/services/vacuum-excavation/
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Subsurface Utility Engineering
Location and damage prevention of underground utilities
Subsurface Utility engineering
• Understanding SUE
• Why SUE is important?
• Mechanics of SUE
UNDERSTANDING SUE What is SUE: definitions and application within the law in Australia
Understanding SUE
• Subsurface Utility engineering is an engineering practice that encompasses the management or risk associated with many aspects of infrastructure project management such as:
• Underground utility relocation
• Infrastructure planning and estimation
• 3D mapping of utilities for design
• Correct identification and location of underground utilities
• Road and Highway upgrades
Understanding SUE
• Australian Standards of Practice
• AS 5488-2013
• Contents • Definition of SUE
• Quality levels of SUE
WHY SUE IS IMPORTANT? Managing and preventing risks | Infrastructure management
Why is SUE Important?
• Prevention of damages to existing subsurface
• Power
• Water
• Gas
• Sewer
• Drainage
• Communications
• CCTV
• Data
• Fuel
Why is SUE important?
• We can’t rely purely on One Call (DBYD) systems or GIS overlays to provide accurate location of underground utilities.
Why SUE is important? • Risk management is the essence of SUE, by utilizing all aspects of SUE
your are minimizing costly delays and potentially saving lives.
• Risks under control with SUE
• Project delays
• Damage to critical utilities
• Safety of the public
• Environmental damage
• Costly design errors
• Insurance claims
• Loss of reputation
• Time / Budget penalties
MECHANICS OF SUE How does it work?
Mechanics of SUE
• Before engaging in any subsurface activities, following the following step is recommended:
Mechanics of SUE
• Australia recently released AS 5488-2013 defining the quality levels of SUE
• Quality level A
• Quality level B
• Quality level C
• Quality level D
Mechanics of SUE
Existing records
Cursory site inspection
Anecdotal evidence
Utility owner
Indication of utility type
The date of installation
An indicative location of the surface and subsurface features
The date the data was captured
The source of information
• Quality level D (QL-D) is the lowest quality level.
• The attribute information and metadata of a subsurface utility can be compiled from any, or a combination of the following:
Mechanics of SUE
Mechanics of SUE
Full utilization of QL-D
An interpolation of the location and direction of the utility using surface features as points of reference
Feature codes of surface features, pits, access chambers, poles, valves and hydrants
The location of surface features measured in terms of relative spatial positioning with a maximum horizontal tolerance of +/-300mm
• Quality level C (QL-C) is described as a surface feature correlation.
• It is achieved using a combination of existing records and a site survey of visible evidence
Mechanics of SUE
Mechanics of SUE
Full utilization of QL-D & QL-C
The location of subsurface features measured in terms of relative spatial positioning with a maximum horizontal tolerance of +/-300mm and a maximum vertical tolerance of +/-500mm
The locating method(s) used to obtain the attribute information
• Quality level B (QL-B) provides relative subsurface feature locating in three dimensions
• The minimum requirements for QL-B Is relative spatial positioning:
Mechanics of SUE
Mechanics of SUE
Full utilization of QL-D, QL-C and QL-B
The location of points surveyed on surface and subsurface features measured un terms of absolute spatial positioning with a mac Horizontal and vertical tolerance of +/-50mm.
Survey control information used to determine the absolute spatial position of the utility
The survey and locating methods used to obtain the attribute information
Utility type, status, material, size & configuration
• Quality level A (QL-A) is the highest quality level consisting of positive identification of the attribute and an absolute spatial position in three dimensions.
• It is the only quality level that defines a subsurface utility as “validated”
Mechanics of SUE
