Difference between revisions of "Displaying Information on Grades and Geometrics Sheets - GG2002"

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<h2 class="h2_outtoc">Introduction</h2>
__NOTOC__
<p>The purpose of this document is to provide instruction and guidance on the creation of the various components that are included on the Grades and Geometrics sheets within each Construction Plan set.</p>
<span id="BackToTop"></span>
 
<div class="noprint">
<h2 class="h2_outtoc">Geometrics</h2>
    [[#BackToTop|BACK TO TOP ^]]
<p>The following items shall be annotated for all curves larger than five feet (5’) in radius, excluding triangular (“pork-chop”) channelization islands:
</div>
<ul>
<h2 class="first_on_page">Introduction</h2>
<li>Radius (R)</li>
    <p>
<li>Point of Curvature (PC)</li>
        The purpose of this document is to provide instruction and guidance on the creation of the various components that are included on the '''Grades and Geometrics''' sheets within each Construction Plan set.
<li>Center of Curvature (CC)</li>
    </p>
<li>Point of Tangency (PT)</li>
<h2>Geometrics</h2>
</ul>
    <p>
</p>
        The following geometric items shall be annotated for all curves larger than five feet (5’) in radius, excluding triangular (“pork-chop”) channelization islands:
<p>For curves equal to or less than five feet (5’) in radius, the radius (R) and Center of Curvature (CC) shall be annotated on the Grades and Geometrics sheets.</p>
            <ul class="ul_proper_spacing">
 
                <li>Radius (R)</li>
<p>When displaying geometrics for channelization islands (“pork-chop” islands), the Center of Curvature (CC) points at the three corners of the island shall be annotated.</p>
                <li>Point of Curvature (PC)</li>
 
                <li>Center of Curvature (CC)</li>
<p>If curb ramps are present within the project limits, the location where the curb ramp interfaces with the roadway shall be annotated. The annotated point shall be at the center of the curb ramp opening where it interfaces with the roadway. (See attached plan sheet).</p>
                <li>Point of Tangency (PT)</li>
 
            </ul>
<h2 class="h2_outtoc">Grades</h2>
    </p>
<p>The following tables are based on two of the most common scenarios designers will encounter on their projects. The first one is an uncurbed typical section and the second is a curbed section. These tables provide the minimum locations that grades should be annotated on the plan sheets to provide sufficient data for construction layout.</p>
    <p>
 
        For curves equal to or less than five feet (5’) in radius, the radius (R) and Center of Curvature (CC) shall be annotated on the Grades and Geometrics sheets.
<p>If profiles are not provided within the Construction Plan set, coordination with the Project Manager is needed to determine what supplemental information should be provided.</p>
    </p>
 
    <p>
'''Section #1'''
        When displaying geometrics for channelization islands (“pork-chop” islands), the Center of Curvature (CC) points at the three corners of the island shall be annotated.
* Hot-Mix or Concrete Pavement, without curbing.
    </p>
* Travel Lanes = 12’ @ 2% Cross Slope
    <p>
* Shoulders = 10’ @ 4% Cross Slope<br><br>
        If curb ramps are present within the project limits, the location where the curb ramp interfaces with the roadway shall be annotated. The annotated point shall be at the center of the curb ramp opening where it interfaces with the roadway. (See '''Example Plans > Hwy Plans > Grades and Geometrics''' sheet(s) on the '''DelDOT Design Resource Center''').
 
    </p>
'''Section #2'''
<h2>Grades</h2>
* Hot-Mix or Concrete Pavement, with curbing or curb & gutter.
    <p>
* Travel Lanes = 12’ @ 2% Cross Slope
        The following tables are based on two of the most common scenarios designers will encounter on their projects. The first scenario is an uncurbed typical section and the second scenario is a curbed section. These tables provide the minimum locations that grades should be annotated on the plan sheets to provide sufficient data for construction layout.
* Shoulders = 10’ @ 4% Cross Slope<br><br>
    </p>
 
    <p>
 
        If profiles are not provided within the '''Construction Plan''' set, coordination with the Project Manager is needed to determine what supplemental information should be provided.
{| class="wikitable"
    </p>
|+ '''Tangent Sections'''
<h3>Section #1</h3>
|-
    <ul class="ul_proper_spacing">
! '''Linear Feature''' !! '''Section #1''' !! '''Section #2'''
        <li>Hot-Mix or Concrete Pavement, '''without curbing.'''</li>
|-
        <li>Travel Lanes = 12’ @ 2% Cross Slope</li>
| Centerline || No grades displayed. || No grades displayed.
        <li>Shoulders = 10’ @ 4% Cross Slope</li>
|-
    </ul>
| Pavement Cross Slope Break Lines || No grades displayed. || No grades displayed.
<h3>Section #2</h3>
|-
    <ul class="ul_proper_spacing">
| Outer Edges of Shoulders || No grades displayed. || Grades displayed at 50’
        <li>Hot-Mix or Concrete Pavement, '''with curbing or curb & gutter.'''</li>
intervals, coincident with
        <li>Travel Lanes = 12’ @ 2% Cross Slope</li>
the centerline stationing.
        <li>Shoulders = 10’ @ 4% Cross Slope</li>
|-
    </ul>
| colspan="3"|Note: Pavement cross slopes are typically annotated near each match line, and where changes in cross slope occur. (Ex: Outside shoulder converts to a turn-lane and cross slope rotates from 4.0% to 2.0%.)
|}
<table class="deldot_table">
<table class="deldot_table">
{| class="wikitable"
            <tr>
|+ '''Superelevation Transition Sections'''
                <th style="width: 30%"><strong>Tangent Sections</strong></th>
|-
                <th style="width: 30%"><strong>Section #1</strong></th>
! '''Linear Feature''' !! '''Section #1''' !! '''Section #2'''
                <th style="width: 30%"><strong>Section #2</strong></th>
|-
            </tr>
| Centerline || Grades displayed at 25’ intervals, coincident with the centerline stationing. || Grades displayed at 25’ intervals, coincident with the centerline stationing.
            <tr>
|-
                <td>Centerline</td>
| Pavement Cross Slope Break Lines || Grades displayed at 25’ intervals, coincident with the centerline stationing. || Grades displayed at 25’ intervals, coincident with the centerline stationing.
                <td>No grades displayed.</td>
|-
                <td>No grades displayed.</td>
| Outer Edges of Shoulders || Grades displayed at 25’ intervals, coincident with the centerline stationing. || Grades displayed at 50’
            </tr>
intervals, coincident with
            <tr>
the centerline stationing.
                <td>Pavement Cross Slope Break Lines</td>
|-
                <td>No grades displayed.</td>
| colspan="3"|Note: Pavement cross slopes are shown at the following points:
                <td>No grades displayed.</td>
* Beginning and end of tangent runout.
            </tr>
* Beginning and end of superelevation runoff.
            <tr>
* Beginning and end of full superelevation.)
                <td>Outer Edges of Shoulder</td>
|}
                <td>No grades displayed.</td>
 
                <td>Grades displayed at 50’ intervals, coincident with the centerline stationing.</td>
{| class="wikitable"
            </tr>
|+ '''Full Superelevation Sections'''
            <tr>
|-
                <td colspan="3" \>Note: Pavement cross slopes are typically annotated near each match line, and where changes in cross slope occur. (Ex: Outside shoulder converts to a turn-lane and cross slope rotates from 4.0% to 2.0%.)</td>
! '''Linear Feature''' !! '''Section #1''' !! '''Section #2'''
            </tr>
|-
    </table>
| Centerline || No grades displayed. || No grades displayed.
    <table class="deldot_table">
|-
        <tr>
| Pavement Cross Slope Break Lines || No grades displayed. || No grades displayed.
                <th style="width: 30%"><strong>Superelevation Transition Sections</strong></th>
|-
                <th style="width: 30%"><strong>Section #1</strong></th>
| Outer Edges of Shoulders || No grades displayed. || Grades displayed at 50’
                <th style="width: 30%"><strong>Section #2</strong></th>
intervals, coincident with
            </tr>
the centerline stationing.
            <tr>
|}
                <td>Centerline</td>
 
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
{| class="wikitable"
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
|+ '''Intersections'''
            </tr>
|-
            <tr>
! '''Linear Feature''' !! '''Section #1''' !! '''Section #2'''
                <td>Pavement Cross Slope Break Lines</td>
|-
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
| Centerline || Grades displayed at 25’ intervals, coincident with the centerline stationing. || Grades displayed at 25’ intervals, coincident with the centerline stationing.
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
|-
            </tr>
| Pavement Cross Slope Break Lines || Grades displayed at 25’ intervals, coincident with the centerline stationing. || Grades displayed at 25’ intervals, coincident with the centerline stationing.
            <tr>
|-
                <td>Outer Edges of Shoulder</td>
| Outer Edges of Shoulders ||  Grades displayed at 25’ intervals, coincident with the centerline stationing. || Grades displayed at 25’ intervals, coincident with the centerline stationing.
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
|-
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
| Radius From Mainline to Side Roads || Grades displayed at 10’ intervals along radius and at sag points to verify proper drainage. || Grades displayed at 10’ intervals along radius and at sag points to verify proper drainage.
            </tr>
|-
            <tr>
| colspan="3"|Note: Additional spot grades may be needed throughout the intersection to depict intended direction of drainage flow.
                <td colspan="3" \>Note: Pavement cross slopes are shown at the following points:
|}
                    <ul class="ul_proper_spacing">
                        <li>Beginning and end of tangent runout.</li>
                        <li>Beginning and end of superelevation runoff.</li>
                        <li>Beginning and end of full superelevation.</li>
                    </ul>
                </td>
            </tr>
    </table>
    <table class="deldot_table">
        <tr>
                <th style="width: 30%"><strong>Full Superelevation Sections</strong></th>
                <th style="width: 30%"><strong>Section #1</strong></th>
                <th style="width: 30%"><strong>Section #2</strong></th>
            </tr>
            <tr>
                <td>Centerline</td>
                <td>No grades displayed.</td>
                <td>No grades displayed.</td>
            </tr>
            <tr>
                <td>Pavement Cross Slope Break Lines</td>
                <td>No grades displayed.</td>
                <td>No grades displayed.</td>
            </tr>
            <tr>
                <td>Outer Edges of Shoulder</td>
                <td>No grades displayed.</td>
                <td>Grades displayed at 50’ intervals, coincident with the centerline stationing.</td>
            </tr>
            <tr>
                <td colspan="3" \>Note: Pavement cross slopes are typically annotated near each match line, and where changes in cross slope occur. (Ex: Outside shoulder converts to a turn-lane and cross slope rotates from 4.0% to 2.0%.)</td>
            </tr>
    </table>
    <table class="deldot_table">
        <tr>
                <th style="width: 30%"><strong>Intersections</strong></th>
                <th style="width: 30%"><strong>Section #1</strong></th>
                <th style="width: 30%"><strong>Section #2</strong></th>
            </tr>
            <tr>
                <td>Centerline</td>
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
            </tr>
            <tr>
                <td>Pavement Cross Slope Break Lines</td>
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
            </tr>
            <tr>
                <td>Outer Edges of Shoulder</td>
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
                <td>Grades displayed at 25’ intervals, coincident with the centerline stationing.</td>
            </tr>
            <tr>
                <td>Radius From Mainline to Side Roads</td>
                <td>Grades displayed at 10’ intervals, coincident with the centerline stationing.</td>
                <td>Grades displayed at 10’ intervals, coincident with the centerline stationing.</td>
            </tr>
            <tr>
                <td colspan="3" \>Note: Additional spot grades may be needed throughout the intersection to depict intended direction of drainage flow.</td>
            </tr>
    </table>

Latest revision as of 13:56, 12 January 2022

   BACK TO TOP ^

Introduction

The purpose of this document is to provide instruction and guidance on the creation of the various components that are included on the Grades and Geometrics sheets within each Construction Plan set.

Geometrics

The following geometric items shall be annotated for all curves larger than five feet (5’) in radius, excluding triangular (“pork-chop”) channelization islands:

  • Radius (R)
  • Point of Curvature (PC)
  • Center of Curvature (CC)
  • Point of Tangency (PT)

For curves equal to or less than five feet (5’) in radius, the radius (R) and Center of Curvature (CC) shall be annotated on the Grades and Geometrics sheets.

When displaying geometrics for channelization islands (“pork-chop” islands), the Center of Curvature (CC) points at the three corners of the island shall be annotated.

If curb ramps are present within the project limits, the location where the curb ramp interfaces with the roadway shall be annotated. The annotated point shall be at the center of the curb ramp opening where it interfaces with the roadway. (See Example Plans > Hwy Plans > Grades and Geometrics sheet(s) on the DelDOT Design Resource Center).

Grades

The following tables are based on two of the most common scenarios designers will encounter on their projects. The first scenario is an uncurbed typical section and the second scenario is a curbed section. These tables provide the minimum locations that grades should be annotated on the plan sheets to provide sufficient data for construction layout.

If profiles are not provided within the Construction Plan set, coordination with the Project Manager is needed to determine what supplemental information should be provided.

Section #1

  • Hot-Mix or Concrete Pavement, without curbing.
  • Travel Lanes = 12’ @ 2% Cross Slope
  • Shoulders = 10’ @ 4% Cross Slope

Section #2

  • Hot-Mix or Concrete Pavement, with curbing or curb & gutter.
  • Travel Lanes = 12’ @ 2% Cross Slope
  • Shoulders = 10’ @ 4% Cross Slope
Tangent Sections Section #1 Section #2
Centerline No grades displayed. No grades displayed.
Pavement Cross Slope Break Lines No grades displayed. No grades displayed.
Outer Edges of Shoulder No grades displayed. Grades displayed at 50’ intervals, coincident with the centerline stationing.
Note: Pavement cross slopes are typically annotated near each match line, and where changes in cross slope occur. (Ex: Outside shoulder converts to a turn-lane and cross slope rotates from 4.0% to 2.0%.)
Superelevation Transition Sections Section #1 Section #2
Centerline Grades displayed at 25’ intervals, coincident with the centerline stationing. Grades displayed at 25’ intervals, coincident with the centerline stationing.
Pavement Cross Slope Break Lines Grades displayed at 25’ intervals, coincident with the centerline stationing. Grades displayed at 25’ intervals, coincident with the centerline stationing.
Outer Edges of Shoulder Grades displayed at 25’ intervals, coincident with the centerline stationing. Grades displayed at 25’ intervals, coincident with the centerline stationing.
Note: Pavement cross slopes are shown at the following points:
  • Beginning and end of tangent runout.
  • Beginning and end of superelevation runoff.
  • Beginning and end of full superelevation.
Full Superelevation Sections Section #1 Section #2
Centerline No grades displayed. No grades displayed.
Pavement Cross Slope Break Lines No grades displayed. No grades displayed.
Outer Edges of Shoulder No grades displayed. Grades displayed at 50’ intervals, coincident with the centerline stationing.
Note: Pavement cross slopes are typically annotated near each match line, and where changes in cross slope occur. (Ex: Outside shoulder converts to a turn-lane and cross slope rotates from 4.0% to 2.0%.)
Intersections Section #1 Section #2
Centerline Grades displayed at 25’ intervals, coincident with the centerline stationing. Grades displayed at 25’ intervals, coincident with the centerline stationing.
Pavement Cross Slope Break Lines Grades displayed at 25’ intervals, coincident with the centerline stationing. Grades displayed at 25’ intervals, coincident with the centerline stationing.
Outer Edges of Shoulder Grades displayed at 25’ intervals, coincident with the centerline stationing. Grades displayed at 25’ intervals, coincident with the centerline stationing.
Radius From Mainline to Side Roads Grades displayed at 10’ intervals, coincident with the centerline stationing. Grades displayed at 10’ intervals, coincident with the centerline stationing.
Note: Additional spot grades may be needed throughout the intersection to depict intended direction of drainage flow.
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