Roadway Designer Resurfacing Restoration and Rehabilitation - PowerPoint Presentation

Slide1

Roadway Designer Resurfacing Restoration and Rehabilitation

Kevin Jackson, Technical Director, TLI

Bentley Systems, Inc.Slide2

Roadway Designer Overlay ToolsSlide3

Objectives – Overlay ComponentsSlide4

Overlay Tools – Overlay / Stripping ComponentsSlide5

Add New Component > Overlay/Stripping

Top Option

Bottom Option

Follow Surface

Follow ComponentSlide6

Overlay ComponentSlide7

Create Pave + Overlay TemplateDrag the Overlay_Only template into it so that the bottom of pavement and Overlay points merge.

Test

Run Roadway Designer

Change to

Pave+Overlay

template

Note that Overlay now extends full widthSlide8

Stripping ComponentSlide9

Create a Pavement+Overlay templateAdd a Milling Component

Match the bottom three points

Test

Create a Pavement + Overlay + Milling Component

Run Roadway DesignerSlide10

Multiple LayersDifferent Overlay Layers?

Use Follow Lowest / Follow HighestSlide11

Review the 05_OverMill_Complicated Corridor (multiple overlay layers, saddlebags, quantities)Slide12

Standard: End-Area Volume ReportsQuick: Component Quantities Provides Component Quantities and Costs

Not exact: good for quickly comparing alternatives

For “complete” quantities use the full End-Area Volumes functionality

Component QuantitiesSlide13

Run Roadway DesignerLaunch Component Quantities

Walk the Corridor

Disable

Parametric ConstraintsSlide14

Reports on Overlay/Stripping components that have the Stripping option set.Milling Stylesheet (set Default)

Milling ReportSlide15

Generate a Milling ReportSlide16

Overlay Tools – Vertical AdjustmentsSlide17

Overlay

Overlay + Max Milling

Min. Milling w/ & w/o Max. Milling

Vertical Adjustment ScenariosSlide18

Structural Integrity of new BackboneMinimum amount of overlay material (minimum overall overlay thickness)Full-width Milling

Milling: maximum depth of high-point milling

Vertical Adjustments: the EngineeringSlide19

Given a template, it determines the Template Top.This is the triangulated surface

Regardless of the complexity of the template, the Top is a simple left-to-right linestring

It compares the vertices in the Top to the vertices in the Active Surface

It finds the Minimum (or Maximum) Vertical Difference value

It adds the Backbone Thickness, Overlay and/or Milling values to determine an Adjustment Value.

Adjustment is completely independent of anything other than the Top line and the Surface

Vertical Adjustments: the MethodologySlide20

Determined from Top segments in the template

Everything under the top ignored

The Backbone Thickness is used in Adjustments

Template TopSlide21

Horizontal Range of Comparison must be defined

Template Top

User Selects Two Template Points to define the left and right ends

Existing Ground Range

Use the Template Points used for the Top

Or - Follow Alignments, Features or Styles

Or - Fixed Offsets

Vertical Adjustments Horizontal RangeSlide22

Solution OptionsCompare at Template Points Only or at all Section PointsMaximum Difference can be set

Vertical Adjustments ComparisonsSlide23

Critical Points and Vertical Delta

Only Two Comparison Points/Vertical Deltas matter:

Zero Overlay Point and Minimum Milling PointSlide24

Vertical Adjustment Geometry

Critical Point =

Min. Milling Point for Min. Milling

Zero Overlay Point for Overlay

Critical Delta =

Existing Surface Elev. - Template Top Elev. at the Critical Point

Direction matters

+ is up, - is downSlide25

Minimum Milling

Top is moved to the lowest position where it intersects the existing surface

Establishes “Bottom” of backboneSlide26

Backbone Thickness (always positive) is added to the (positive or negative) Min. Milling DeltaAdjustment = Min. Milling Delta + Backbone Thickness

Backbone Thickness Slide27

In Roadway Designer select the 02_Pavement* CorridorSelect Display Mode: OverlayVertical Adjustments:

Set Template & ex Ground Range

Select Use Minimum Milling

Walk the Corridor, observeSlide28

Step 1: Find the Minimum Overlay point: the intersection between the top and the existing ground where the Top is highest

Minimum OverlaySlide29

Minimum Overlay ValueBetween Backbone Bottom and high point of existing (Minimum/Zero Overlay Point)Zero or greater

Added to Adjustment

Overlay SettingsSlide30

Steps 2 and 3: Add the Minimum Overlay Value to the Zero Overlay Delta and add the Backbone Thickness

Minimum OverlaySlide31

In Roadway Designer select the 02_Pavement* CorridorSelect Display Mode: OverlayVertical Adjustments:

Set Template & ex Ground Range

BB=0, Min Overlay = 0

Walk the Corridor, observeSlide32

Change the Backbone Thickness to 0.2 ft [0.1m]Walk the Corridor, observeChange the Minimum Overlay to 0.2 ft [0.1m]

Walk the Corridor, observeSlide33

Sets a maximum limit to millingMilling is limited toMaximum Milling Value

or

Minimum Milling Point (full-width milling)

Minimum Milling with Maximum MillingSlide34

Set to Minimum MillingSelect the Maximum Milling optionKey in 0.1 [0.05]

Walk the Corridor, observeSlide35

Mills out High Points

Requires less Overlay Material than with no milling

Can save significant money

Minimum Overlay with Max Milling Slide36

Milling Adjustment value is the last adjustment

Total Adjustment is never negative

Milling Adjustment is limited by

The Max Milling Value or

Zero Adjustment point

Minimum Overlay with Max Milling Slide37

Change the Maximum Milling depth to 0.1 [0.05]Walk the Corridor, observeChange the Corridor Vertical to None

Walk the Corridor, observeSlide38

Vertical Adjustments do not require vertical alignmentsComponents behave the same regardless of how they’re controlled vertically.To “Permanently Save” the Adjustments you’ll need to make an Alignment:

Smooth Adjusted Vertical Alignment

Apply Adjusted Vertical Alignment

Final Cleanup: can use standard alignment tools

Vertical AlignmentsSlide39

Smooth the Vertical AdjustmentSave the VerticalenvelopesReview the Vertical

Push the Corridor w/o Adjustments (go w/ adj. to see if the Adjustment deviates from 0.0)

If different: verify that the Adjustment settings were the same