Technical Standards & Details

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Jurisdiction

On and after September 11, 1979, the standards and details contained herein shall be applicable to all new improvements and alterations in existing improvements lying within the regulatory jurisdiction of the City of Wilmington.

The City of Wilmington maintains a set of standards and details to be used in the construction of infrastructure improvements. The materials, design and construction standards contained in the following web pages are established as the minimum standards for the City of Wilmington.

Variance or Modification

These standards and details have been compiled by the various technical agencies of the City of Wilmington and New Hanover County upon sufficient studies of the existing problems, improvement standards within other areas of the State, and applicable enabling legislation of the State, and have been determined to be reasonable improvement specifications and standards applicable to the City of Wilmington. All construction methods and material not specified within these pages shall conform with the current "North Carolina Department of Transportation Standard Specifications for Roads and Structures".

All proposed variances to the standards and details contained herein shall be subject to provisions of Section 18-9 of the City Subdivision Regulations. Any alternate designs, construction methods, and materials, not specifically prescribed herein, shall be subject to Section 18-88 of the City Subdivision Regulations.

If you have any problems downloading or viewing the files, please contact Jonathan Rhyne


Standard Details Files

Standard Details

Individual Detail Files

Std. Detail # Detail Description Revision Date PDF
1-04 Typical Road Rebuild 5/10/13 1-04
1-05 Pavement Repairs 5/09/13 1-05
1-07 Pipe Trench 5/03/13 1-07
1-14 Alley & Private Access Easement Sections 10/29/12 1-14
1-17 Flared End Sxn and Dimension Table-Sheet 1 10/04/12 1-17.1

Flared End Sxn and Dimension Table-Sheet 2
1-17.2
1-18 Brick Sidewalk 9/17/12 1-18
2-01 Catch Basin 8/08/11 2-01
2-02 Grill Basin
2-02
2-03 Storm Drain Manhole
2-03
2-04 Subdrain
2-04
2-05 Storm Drain Interference Manhole
2-05
2-06 Trough Type Drop Inlet
2-06
2-10 Modified Catch Basin Pipes Over 24"
2-10
2-11 Slab Top for Modified Catch Basin
2-11
2-12 Modified Catch Basin Sidewalk & Curbing
2-12
2-13 Requirements for Corrugated Steel Pipe
2-13
2-15 Pipe Outlet Protection
2-15
2-16 Catch Basin Castings
2-16
2-17 Guidelines for Pipe Bedding-Storm Sewer
2-17
2-18 Pipe Connection-Metal to Concrete
2-18
2-19 Catch Basin Casting for 30" Hood & Grate
2-19
2-20 Catch Basin Grate for 30" Hood & Grate
2-20
2-21 Catch Basin Casting for 24" Hood & Grate
2-21
2-23 Precast Waffle Box
2-23
2-23a Precast Waffle Box-General Notes
2-23a
2-24 Precast Drainage Box-Solid
2-24
2-24a Precast Drainage Box-Solid-General Notes
2-24a
2-100 Concrete Pipe Collar
2-100
3-01.1
Non-Residential Collector Street (Section and Crown) 5/06/15 3-01.1
3-01.2 Residential Collector Street (Section and Crown) 5/06/15 3-01.2
3-01.3 Local Street with Vertical Curb (Section and Crown) 5/06/15 3-01.3
3-01.4 Local Street with Slope Curb (Section and Crown) 5/06/15 3-01.4
3-01.5 Local Street with Valley Curb (Section and Crown) 5/06/15 3-01.5
3-01.6 Minor Street with Vertical Curb (Section and Crown) 5/13/15 3-01.6
3-01.7 Minor Street with Slope Curb (Section and Crown) 5/13/15 3-01.7
3-01.8 Minor Street with Valley Curb (Section and Crown) 5/13/15 3-01.8
3-01.9 Alley with Header Curb (Section and Crown) 5/13/15 3-01.9
3-02 Street Elevations
3-02
3-03.1 & 3-03.2 Residential Driveway Plan (Vertical Curb) 2/14/17 3-03.1-2
3-03.3 & 3-03.4 Commercial Driveway Plan 2/14/17 3-03.3-4
3-04 Cul-De-Sac 4/11/14 3-04
3-05 Turnarounds
3-05
3-07 Curb Ramps-Flare
3-07
3-08 Curb Ramps-Adjacent to Plaza
3-08
3-09 Intersection Layout
3-09
3-10 Sidewalk
3-10 
3-11 Curbing
3-11
3-100 Reinforced Sidewalk
3-100
3-102 Brick Crosswalk
3-102
3-103 Brick Street-Typical Section
3-103
3-104 Guidelines for Sediment Control BMPs-Sheet 1
3-104.1

Guidelines for Sediment Control BMPs-Sheet 2
3-104.2
3-105 Typical Retaining Wall
3-105
8-02 Right Turn Bay
8-02
8-18 Driveway Right Turn Lane-With Curb 5/29/15 8-18
8-19 Driveway Right Turn Lane-No Curb 5/29/15 8-19
8-20 Left Turn Lane Widening
8-20
8-21 One-Way Driveways
8-21
8-22 Left Turn Lanes
8-22
9-04 Typical Street Lamp
9-04
9-05 Typical Street Lamp Base & Electrical Detail
9-05
9-08 240V 3-Wire Service Street Light Power Riser
9-08
11-01 Pavement Markings-Line Types
11-01
11-02 Pavement Markings-Offsets
11-02
11-03 Guidelines for Pavement Markings and Symbols
11-03
11-04 Pavement Markings-Non Signal Intersections-Sheet 1 2/05/15 11-04.1

Pavement Markings-Non Signal Intersections-Sheet 2 1/08/15 11-04.2
11-06 Pavement Markings-Signalized Intersections
11-06
11-07 Pavement Markings-Thru-Lane Drop at Intersection
11-07
11-08 Pavement Markings-Turn Lanes
11-08
11-09 Pavement Markings-Turn Lanes
11-09
11-10 Pavement Markings-Raised Pavement Markers
11-10
11-11 Pavement Markings-Crosswalks
11-11
11-12 Thermo Markings-50' Driveway-No Left Turn
11-12
11-13 Thermo Markings-50' Driveways-Sheet 1
11-13.1

Thermo Markings-50' Driveways-Sheet 2
11-13.2
11-14 Markings-Roundabout
11-14
14-02 Standard Manhole Ring and Cover
14-02
14-03 Standard Manhole Vented Section
14-03
14-04 Grill Basin Castings
14-04
14-05 Monument Detail
14-05
14-10 Slip Resistant Manhole Step Detail
14-10
14-11 Precast Manhole
14-11
14-12 Precast Manhole Ring Extension
14-12
15-01 Monument Base
15-01
15-03 Sign Installation-Sheet 1
15-03.1

Sign Installation-Sheet 2
15-03.2
15-05 Standard Utility Location 2/03/16 15-05
15-07 Guidelines for Traffic Control
15-07
15-09 Tree Protection During Construction-Sheet 1 1/14/15 15-09.1

Tree Protection During Construction-Sheet 2 1/14/15 15-09.2
15-10 Typical Unpaved Parking Facility-Under 25 Stalls
15-10
15-11 Parking Facility Under 25 Stalls-Paved or Unpaved
15-11
15-12 Parking Facility Equal to or Over 25 Stalls
15-12
15-13 Parking Facility Design Notes
15-13
15-14 Landscape Notes
15-14
15-16 Typical Pond Landscape
15-16
15-17 Residential Street Tree Standards
15-17
15-18 Standard Forms
15-18