Standard Details are provided for constructing various Clark County projects. Details are grouped by construction activity and include details for roadway design, transportation and traffic features, drainage features, and erosion and sediment control.
Standard Details have been grouped according to specific construction categories.
Clark County's Public Works Director has approved and signed each Standard Detail. As standards change, each detail is updated on an "as needed" basis, with the Public Works Director approving and signing all changes.
The revision date is included on all Standard Details.
Standard Details are not to be modified from their current form. Any modification requires removing all signatures since Clark County has not approved the change. Anyone making modifications must assume full responsibility for the changes made.
For details not shown here, refer to:
Standard Details, Washington State Department of Transportation
Any questions regarding these details can be directed to:
Dave Daly
Engineering and Design Section Supervisor
Clark County Public Works
360.784.2565
dave.daly@clark.wa.gov
Information about best management practices related to stormwater can be found in:
Clark County Stormwater Manual 2015, Book 2, Best Management Practices Design
The following provides links to Standard Details grouped by construction activity:
PDFs are provided for download. They may be converted to an image file (JPG) but a minimum of 300dpi resolution is suggested | ||||
Roadway Sections | ||||
Complete Set of Roadway Sections (PDF) | ||||
Drawing 1 | Parkway Arterial (Pa-4b) | |||
Drawing 2 | Urban Principal Arterial (Pr-4cb) | |||
Drawing 3 | Urban Minor Arterial (M-4cb) | |||
Drawing 4 | Urban Minor Arterial (M-2cb) | |||
Drawing 5 | Urban Collector (C-2cb) | |||
Drawing 6 | Urban Collector (C-2) | |||
Drawing 7 | Urban Collector (C-2b) | |||
Drawing 8 | Local Commercial/Industrial | |||
Drawing 9 | Commercial/Industrial With Bike Lanes | |||
Drawing 10 | Commercial/Industrial With Parking | |||
Drawing 11 | Commercial/Industrial Storefront | |||
Drawing 12 | Urban Neighborhood Circulator | |||
Drawing 13 | Urban Local Residential Access | |||
Drawing 14 | Urban Short Cul-De-Sac | |||
Drawing 15 | Urban Private Road (Residential Areas) | |||
Drawing 16 | Urban Private Road With Parking Lane (Residential Areas) | |||
Drawing 17 | Urban Alley | |||
Drawing 18 | Rural Arterial (RA) 2-Lane | |||
Drawing 19 | Rural Major Collector (R-2) 2-Lane | |||
Drawing 20 | Rural Minor Collector (Rm-2) 2-Lane | |||
Drawing 21 | Rural Local Access | |||
Drawing 22 | Rural Private Road | |||
Drawing 23 | Urban Cul-De-Sac | |||
Drawing 24 | Urban Short Cul-De-Sac | |||
Drawing 25 | Rural Cul-De-Sac | |||
Drawing 26 | Temporary Cul-De-Sac | |||
Drawing 27 | Dead-End Hammerhead Temporary or Rural | |||
Drawing 27A | Dead-End Hammerhead Temporary or Rural (Alternative) | |||
Drawing 28 | Dead-End Hammerhead Urban | |||
Drawing 28A | Dead-End Hammerhead Urban (Alternative) | |||
Drawing 29 | Passing Turnout For Use On Driveways | |||
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Transportation | ||||
Complete Set of Transportation Details (PDF) | ||||
UGN | Standard Trench Restoration and Grading Notes | |||
UGN(2) | Standard Trench Restoration and Grading Notes | |||
U1 | Open Cut Utility Trench Backfill - Collector or Arterial Roadway | |||
U2 | Open Cut Utility Trench Backfill - Collector or Arterial Roadway (Alternate) | |||
U3 | Open Cut Utility Trench Backfill - Residential Roadway | |||
U4 | Concrete Roadway | |||
U5 | Roadway Shoulder - Includes Lawn And Landscape | |||
U6 | Pavement Reconstruction For Surface Or Transverse Cuts | |||
U7 | Butt Joint Planing And Overlay | |||
U8 | Intersection Overlay For All Road Intersections | |||
U9 | Utility Placement | |||
F1 | Curb Ramp & Construction Notes | |||
F2 | Parallel Curb Ramp - Type A | |||
F2a | Dual Parallel Curb Ramps | |||
F3 | Parallel Curb Ramp - Type B | |||
F4 | Perpendicular Curb Ramp - Type A | |||
F5 | Perpendicular Curb Ramp - Type B | |||
F6 | Single Direction Curb Ramp - Type A (Warning Surface On Landing) | |||
F6a | Single Direction Curb Ramp - Type B (Warning Surface On Curb Ramp) | |||
F7 | Single Direction Curb Ramp - Type C | |||
F8 | Combination Curb Ramp | |||
F10 | Detectable Warning Surface | |||
F11 | Detectable Warning Surface On Asphalt Path Installation Methods | |||
F12 | Cement Concrete Sidewalk Detail | |||
F12a | Asphalt Path/Walkway | |||
F13 | Typical Mailbox Placement | |||
F14 | Cement Concrete Approach - Type 1 - Detached Sidewalk | |||
F15 | Cement Concrete Approach - Type 2 - Attached Sidewalk | |||
F16 | Cement Concrete Approach - Modified Type 2 - Attached Sidewalk | |||
F17 | Commercial Cement Concrete Approach - Detached Sidewalk | |||
F17a | Commercial Cement Concrete Approach - Attached Sidewalk | |||
F18 | Concrete Curbs | |||
F18b | Concrete Roll Curb And Gutter | |||
F18c | Roof And Footing Drain Through Cement Concrete Roll Curb And Gutter | |||
F18d | Concrete Driveway Cut Detail | |||
F19a | Median Curbing Sheet 1 Of 4 | |||
F19b | Median Curbing Sheet 2 Of 4 | |||
F19c | Median Curbing Sheet 3 Of 4 | |||
F19d | Median Curbing Sheet 4 Of 4 | |||
F20 | Shoulder And Ditch Section Rural Driveway | |||
F21 | Separated Walkway (Neighborhood Circulation) | |||
F27 | Manhole Adjustment | |||
F28 | Centerline Monuments | |||
F30 | Pavement Widening (Frontage Improvements) | |||
F31 | Concrete Joints | |||
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Traffic | ||||
Complete Set of Traffic Details (PDF) | ||||
T1.0 | Standard Notes For Contractor Installed Signing And Striping | |||
T2.0 | Standard Notes For County Installed Signing And Striping | |||
T2.10 | Sample Sign And Striping Install Plan Sheet | |||
T2.20 | Sample Sign Install Specifications Sheet | |||
T3.0 | Longitudinal Markings | |||
T3.1 | Intersection Markings | |||
T4.0 | Traffic Arrows | |||
T6.0 | Pavement Marking Symbols | |||
T7.0 | Steel Sign Support Type ST-4 And Sign Installation Details | |||
T8.0 | Street Name Sign Details Sheet 1 of 3 | |||
T8.1 | Street Name Sign Details Sheet 2 of 3 | |||
T8.2 | Street Name Sign Details Sheet 3 of 3 | |||
T9.0 | Type II And III Barricades | |||
T10.0 | Bollards Sheet 1 of 3 | |||
T10.1 | Bollards Sheet 2 of 3 | |||
T10.2 | Bollards Sheet 3 of 3 | |||
T11.0 | Left-Turn Channelization Sheet 1 of 4 | |||
T11.1 | Left-Turn Channelization Sheet 2 of 4 | |||
T11.2 | Left-Turn Channelization Sheet 3 of 4 | |||
T11.3 | Left-Turn Channelization Sheet 4 of 4 | |||
T12.0 | Delineation For Median Curb And Center Median Island | |||
T12.1 | Signing And Delineation For LID Features | |||
T13.0 | Bike Lane Signing And Striping Scenario BL1 | |||
T14.0 | Bike Lane Signing And Striping Scenario BL2 | |||
T15.0 | Bike Lane Signing And Striping Scenario BL3 | |||
T16.0 | Green Bike Lane Signing And Striping Scenario GBL1 | |||
T17.0 | Green Bike Lane Signing And Striping Scenario GBL2 | |||
T18.0 | Green Bike Lane Signing And Striping Scenario GBL3 | |||
T19.0 | Green Bike Lane Signing And Striping Scenario GBL4 | |||
T20.0 | Green Bike Lane Signing And Striping Scenario GBL5 | |||
T21.0 | Green Bike Lane Signing And Striping Scenario GBL6 | |||
T22.0 | Speed Bumps (14' And 22' Wide) | |||
T23.0 | Raised Crosswalk And Speed Cushion | |||
T24.0 | Fire Response And Emergency Vehicle Speed Bump | |||
T25.0 | Intersection Sight Distance | |||
T26.0 | Pedestrian Refuge Island And Delineation | |||
T27.0 | Signing For Pedestrian Crossing Two-Lane Roadway | |||
T28.0 | Signing For Pedestrian Crossing Five-Lane Roadway Midblock | |||
T28.1 | Signing For Pedestrian Crossing Five-Lane Roadway at Intersection | |||
T29.0 | Parking Restrictions For Bends In Local Access Roads | |||
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Drainage | ||||
Complete Set of Drainage Details (PDF) | ||||
D1.0 | Storm Drain General Notes | |||
D1.0(2) | Storm Drain General Notes | |||
D1.4 | Manhole Type 4 | |||
D1.6 | Manhole Ring And Cover | |||
D2.0 | Concrete Curb Inlet | |||
D2.1 | Debris Trap | |||
D3.0 | Concrete Combination Curb Inlet | |||
D4.0a | Drain Basin H-25 24 in. Nyloplast Or Equal With Debris Trap And Herringbone Grate | |||
D4.0b | Drain Basin H-25 24 in. Nyloplast Or Equal With Herringbone Grate | |||
D4.1 | Catch Basin Gutter Plan | |||
D4.2 | Reversible Frame For Catch Basin | |||
D4.3 | Herringbone Grate For Catch Basin | |||
D4.4 | Vaned Grate For Catch Basin | |||
D4.5 | Rolled Curb Frame And Grate | |||
D4.6 | Rolled Curb Frame And Grate Installation | |||
D4.7 | Rolled Curb Vaned Grate | |||
D5 | Standard Area Inlet - Private | |||
D6 | Concrete Ditch Inlet | |||
D7 | Catch Basin Type 2 - Sedimentation Manhole | |||
D8.1 | Catch Basin Type 2 - Flow Control Manhole - Tee Type (Continued On D8.2) | |||
D8.2 | Catch Basin Type 2 - Shear Gate Detail And Notes (Continued From D8.1) | |||
D9 | Catch Basin Type 2 - Flow Control Manhole - Baffle Type | |||
D10 | Precast Concrete Drywell | |||
D11.0 | Example Stormwater Facility For Urban Infill Development | |||
D11.1 | Example Biofiltration Swale Schematic | |||
D11.2 | Typical Biofiltration Swale Section | |||
D11.3 | Typical Biofiltration Swale Section With Underdrain | |||
D11.4 | Flow Spreader Curb | |||
D11.5 | Biofiltration Swale Sedimentation Trap | |||
D11.6 | Special Curb Inlet - Outlet Behind Walk To Swale | |||
D12 | Infiltration Trench - Private | |||
D13 | Typical Saddle Taps/Tees | |||
D14 | Pipe Bedding And Backfill | |||
D15 | Sewer Cleanout | |||
D16.0 | Typical Downspout Infiltration System - Infiltration Trench (Single-Family Home) | |||
D16.1 | Typical Downspout Infiltration System - Drywell (Single-Family Home) | |||
D17 | Gabion Outfall | |||
D18 | Trench Dam | |||
D22 | Pipe Anchor | |||
D23 | Corrugated Metal Pipe Coupling/Anchor | |||
D24 | Beveled End Section | |||
D25 | Trash Screen | |||
D26 | Chain Link Fence For Stormwater Facility | |||
D27 | Low Point Footling Drain (Preferred Method) | |||
D27a | Residential Drainage Systems - Drain Line To Curb | |||
D27b | Residential Drainage Systems - Drain Connection To Storm Drain | |||
D27c | Example Of Lot Specific Drainage Requirements From Approved Development Plan | |||
D27d | Example Of Lot Specific Drainage Requirements From Approved Development Plan | |||
D28 | Drainage Inlet Medallion Detail | |||
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Erosion Control | ||||
Complete Set of Erosion Control Details (PDF) | ||||
Enc1 | Standard Notes For Erosion Control Plan | |||
Enc2 | Standard Notes For Erosion Control Plan | |||
E1 | Stabilized Construction Entrance | |||
E2 | Rock Check Dam | |||
E2a | Bio-Filter Bags Check Dam | |||
E2b | Geotextile-Encased Check Dam | |||
E3 | Inlet Protection Type 1 - Gravel And Wire Mesh | |||
E3a | Inlet Protection Type 2 - Masonry And Rock | |||
E3b | Inlet Protection Type 3 - Silt Fence | |||
E3c | Inlet Protection Type 4 - Bio-Filter Bags | |||
E3d | Inlet Protection Type 5 - Silt Sack | |||
E4 | Silt Fence | |||
E5 | Bio-Filter Bags - Sediment Barrier | |||
E6 | Wattle | |||
E7 | Outlet Protection - Rip-Rap | |||
E7a | Outlet Protection - Stilling Basin | |||
E8 | Standard Sediment Trap | |||
E8a | Temporary Sediment Pond | |||
E10 | Diversion Dike/Swale | |||
E11 | Pipe Slope Drain | |||
E12 | Filter Berm - Rock/Brush | |||
E13 | Sidewalk Subgrade - Curb Barrier | |||
E15 | Tire Wash | |||
E16 | Plastic Sheeting | |||
E17 | Matting - General Notes | |||
E17a | Matting - Sloe Installation | |||
E17b | Matting - Channel Installation | |||
E17c | Oak Mats | |||
E18 | Surface Roughening - Cat Tracking | |||
E18a | Surface Roughening - Stair Stepping/Grooming | |||
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Planting | ||||
Complete Set of Planting Details (PDF) | ||||
G | Tree Installation Standards For Clark County Rights-Of-Way | |||
TABLE G1 | Plant Materials For Clark County Rights-Of-Way - Trees 4' Minimum Width Beds | |||
TABLE G2 | Plant Materials For Clark County Rights-Of-Way - Trees 6' Minimum Width Beds | |||
TABLE G3 | Plant Materials For Clark County Rights-Of-Way - Trees 8' Or Larger Bed Widths | |||
TABLE G4 | Plant Materials For Clark County Rights-Of-Way Shrubs A-P | |||
TABLE G5 | Plant Materials For Clark County Rights-Of-Way Shrubs P-V | |||
TABLE G6 | Plant Materials For Clark County Rights-Of-Way Ground Covers | |||
G1 | Roadway Reference Plan | |||
G2 | Planting At Street Corners | |||
G3 | Planting At Medians | |||
G4 | Typical Planting Soil Profile, Planting And Irrigation Standards | |||
G5 | Planting At Right-Of-Ways | |||
G6 | Planting At Right-Of-Ways With Bio-Filtration Swales | |||
G7 | Planting Under Utility Lines | |||
G8 | Typical Planting Layout | |||
G9 | Tree Staking Detail And Perf. Pipe Detail For Manual Irrigation | |||
G10 | Irrigation Controller Enclosure And Installation | |||
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Standard Documents | ||||
Complete Set of Standard Documents (PDF) | ||||
1 | Clark County Signature Block | |||
2 | Clark County Standard Notes | |||
3 | Covenant Running With The Land | |||
4 | Private Road Maintenance Covenant | |||
5 | Private Backyard Storm Drain Covenant | |||
6 | Certificate Of Landscape Installation | |||
7 | Escrow Agreement | |||
8 | Letter Of Credit - For Construction | |||
9 | Letter Of Credit - For Maintenance | |||
10 | Performance Bond | |||
11 | Maintenance Bond | |||
12 | Sidewalk Easement | |||
13 | Declaration Amending Short Plat | |||
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