Morrisville Engineering, Design, and Construction Manual - July 2016

Table of Contents

3.3. Retaining Walls ...............................................................................................................................10

3.3.1. General .............................................................................................................................................................................. 10

3.3.2. Applicability ...................................................................................................................................................................... 10

3.3.3. Submittal Requirements ................................................................................................................................................... 10

3.3.4. Design and Construction Standards.............................................................................................................................. 11

3.3.5. Construction Inspection and Testing .............................................................................................................................. 11

3.3.6. Post Construction Certification ....................................................................................................................................... 11

SECTION 4: ACCESS AND CIRCULATION .................................................................................... 12 4.1. Purpose ...........................................................................................................................................12 4.2. Streets and Alleys............................................................................................................................12

4.2.2. Applicable Standards ..................................................................................................................................................... 12

4.2.3. Private Streets ................................................................................................................................................................... 12

4.2.4. Design Factors ................................................................................................................................................................... 13

4.2.5. Vehicular Access Management ...................................................................................................................................... 15

4.2.6. Intersection Sight Distance Areas .................................................................................................................................. 15

4.2.7. Street Intersection Design................................................................................................................................................ 17

4.2.8. Cul-de-Sac Design Standards........................................................................................................................................ 18

4.2.9. Roadway Horizontal and Vertical Alignment Standards ........................................................................................ 19

4.2.10. Cross Section Elements ..................................................................................................................................................... 21

4.2.11. Traffic Calming ................................................................................................................................................................. 22

4.2.12. Bicycle Lanes...................................................................................................................................................................... 23

4.2.13. Pavement Design .............................................................................................................................................................. 23 4.3. Signage, Signals, and Pavement Markings .....................................................................................24

4.3.1. Traffic Control Signs......................................................................................................................................................... 24

4.3.2. Pavement Markings.......................................................................................................................................................... 24

4.3.3. Street Name Signs............................................................................................................................................................ 24

4.3.4. Traffic Signals ................................................................................................................................................................... 26

4.3.5. Pedestrian Crosswalks ..................................................................................................................................................... 26 4.4. Sidewalks, Greenways, and ADA Accessibility ..............................................................................27

4.4.1. General .............................................................................................................................................................................. 27

4.4.2. Sidewalks ........................................................................................................................................................................... 27

4.4.3. Greenway and Multi-Use Paths .................................................................................................................................... 27 4.5. Crosswalks......................................................................................................................................28

4.5.1. General .............................................................................................................................................................................. 28

4.5.2. Public Streets ..................................................................................................................................................................... 28

4.5.3. Private Streets, Drive Aisles, and Vehicle Use Areas................................................................................................ 28

4.6. Fire Lanes ........................................................................................................................................28 4.7. Driveways.......................................................................................................................................28

4.7.1. General .............................................................................................................................................................................. 28

4.7.2. Nonresidential, Multifamily, and Mixed-Use Driveways. ........................................................................................ 28

4.7.3. Residential Driveways ..................................................................................................................................................... 29 4.8. Surfacing Materials .........................................................................................................................29

July 2016

Morrisville, NC

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Engineering, Design, and Construction Manual