Optimising Survey Terrain In In Roads Final

Optimising Survey Terrain in InRoads

Richard Tabe Parsons Brinckerhoff

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Outline Project Importance of the Survey InRoads Creation of Survey – Normal

Method InRoads Creation of Survey – Streamlined The Survey Models Closing

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M80 Project

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38kms

Bendigo

Ballarat

Geelong

Sydney

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M80 Project

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8 kms

Section

Calder Freeway to Sydney Road

Steele Creek Airport Drive Interchange Melrose Drive Ramps Tullamarine Interchange Moonee Ponds Creek Pascoe Vale Road Interchange Merlynston Creek Sydney Road Interchange

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Alliance Venture

Client – State DOT VicRoads Partnership –

VicRoads Thiess (Construction) Parsons Brinckerhoff & Hyder (Design

Consultants)

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Project Office Location

Tulla Sydney Alliance Entry Ramp (Greensborough Bound)

Tullamarine Interchange Persons 200

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The importance of handling survey correctly

Anyone can do it? A surveyor should do it ! Sometimes a road designer

inherits it A design is only as accurate as

the survey

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SURVEY ACCURACYA design is only as accurate as the survey

PAV 1 - +/- 0.01m (point) PAV 2 - +/- 0.025m (point) PAV 3 - +/- 0.035m (point) PAV 4 - +/- 0.05m (point

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Traditional Methods of Import to InRoads (from CAD)

1. Triangles 2. Spots and Breaklines3. Generic names off feature4. By Feature Style with intelligence

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Traditional Methods of Import to InRoads

1. Triangles (as breaklines)

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2. Spots and Points (Random Points, Breaklines)

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3. Generic names of feature (Breaklines, Random Points)

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Traditional Methods of Import

4. Feature Style with intelligence – (Breaklines, Random Pts)

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Summary of Import Methods

1. Triangles-inefficient, non intelligent but quick

2. Spots and Points-non intelligent and quick

3. Generic names off feature – quick and non intelligent

4. By Feature Style – arguably time consuming but with intelligence

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Summary of Import Methods-Common ScenarioImport Surface Scenario

Import Time

Integrity Intelligence Processing Editability

Triangles

Spots and Lines

Generic

Named Features

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Normal Import Import Surface from Graphics

(named features)

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Streamline of Import Simplifying the process - New Feature InRoads 8.7

Import Surface Advanced Automated Isolate features by defined symbology Automated Assigning to named feature Automated Triangulation Types e.g. breaklines, exteriors etc.

Stored in the .XIN file

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Streamline of Import Create the rule set Edit the Import Rule

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Streamline of Import Capture the symbologies Filtering Elements Match Element Properties Picker Highlight Element Properties

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Streamline of Import Capture the symbologies Review the selection criteria

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Streamline of Import Capture the settings

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Level = 16 Kerb Lip Type = Arc, Curve, Line, Line String,

Shape Colour = Colour 7 Line Style = 0 Weight = 1

After the XIN file is complete After xin file is setup for all symbologies and features

Apply Triangulate

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Streamline of Import Import 90 secs

116,802 Breaklines 3902 Exterior 229 Interior 28,905 Random

Triangulation 90 secs 224,472 Triangles

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Summary of Import Methods-StreamlinedImport Surface Advanced

Import Time

Integrity Intelligence Processing Editability

Triangles

Spots and Lines

Generic

Features

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The Survey Models (Macro)

1. Feature Survey Consolidated (Model 1)

2. Survey Composite (Model 2)1. Feature2. Photogrammetric3. Topography

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Feature Survey Consolidated (Model 1) Merge Feature Files 5 parts

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Survey Composite (Model 2 - Step 1) Merged Feature File 5 Feature plus 3 Photogrammetry

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Survey Composite (Model 2 - Step 2)

Merge Feature Photogrammetry Plus Topography

5 Feature plus 3 Photogrammetry plus 1 topography

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Survey Updates

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Drip fed survey updates Crimson Areas Import Surface Advanced “Value Adding”

Pale yellow Apricot – original feature survey

Blue –Photogrammetry Mustard – Topography Crimson -Drip fed survey updates

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Survey Composite & Consolidated

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The Survey Models (Micro)

Feature Survey- to abutments (i.e. no structures over/

under) Bridge Decks Bridge Undersides (soffit)

Total 4 dtms

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Original feature survey with BridgeSteele Creek

Bridge needs to be stripped

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Bridge example – Step 1

Remove bridge from ground features

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Isolate Bridge road surface Repeat for all bridges Create a single dtm for the road surfaces

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Isolate Bridge Underside/ Soffit Repeat for all bridges Create a single dtm for the Underside/ Soffit

surfaces

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Bridge Section

Bridge Road Surface dtm

Bridge Soffit dtm

Grouind Feature dtm

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The Survey Models (Auxiliary)

Boundary Pavement Open Graded Friction Course (OGFC) Strip Transmission Wires/ No Go Zones Sub Strata (Geotech Boreholes) Utilities

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The Survey Models (Auxiliary) Boundary Pavement

Boundary Feature

Existing Pavement Surface

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The Survey Models (Auxiliary)OGFC (OGA) Strip

Remove 30mm from existing Create dtm

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The Survey Models (Auxiliary)OGFC (OGA) Strip

OGFC Rules Not Always visible Assumptions made

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Survey Models (Auxiliary)Transmission Tower and Overheads

Overhead Catenary Wire Pylon 3D in CAD No Go Zone Modelled with InRoads Corridor

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Existing Surveyed Wire Modelled Wires and Pylons


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Existing Surveyed Wire Modelled Wires and Pylons


Transmission towers recreated (grey)

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Historical Document – Wires at 72degrees C and Swing Allowance

Digitised and Modelled in InRoads

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Modelled No Go Zones Components


No Go Zones

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Survey Models (Auxiliary)Sub Strata

Text Import Wizard Data Type for Boreholes Displayed as COGO Geometry

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Displayed as COGO Geometry

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Text Import Wizard Data Type for Boreholes Displayed as Surface

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Survey Models (Auxiliary)Utilities Utility Services created 3D Non triangulable named features Output in cells when cut in cross section

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Scope of DTMs

5 Feature dtm 3 Photo dtm 1 Topo dtm 1 Consolidated dtm 1 Composite dtm 1 Bridge Road (Composite) dtm 1 Bridge Soffit (Composite) dtm 1 Decked Coreholes (Composite) dtm 1 Existing Pavement dtm 1 Boundary dtm 1 OGFC Stripped dtm 1 No Go Zone dtm 1 Utility dtm

30 Updates

APPROX 50 dtms handling (9 months)

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Closing

Handling of Survey is a key component of any Project

Allow to resource it- do not underestimate the task

Make the most of correctly forming models with named features

Make the most of the Import Surface Advanced function

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Questions

Richard Tabe Parsons Brinckerhoff

Optimising Survey Terrain In In Roads Final

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