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Construction Standard Drawings
City Standards Disclaimer
Public Works attempts to achieve maximum uniformity of construction and engineering practices within the City of Lewiston. These are minimum standards and are intended to assist, but not to substitute for work by engineering and design professionals. Special conditions or environmental constraints may require more stringent design than would normally be required under these Standards. It is not the intent of the City to limit any innovative effort that could result in a superior project design. A proposed design, which is different from these Public Works Standards, will be evaluated on the basis that the proposed design will produce a comparable or superior result, and in every way adequate for the user, the City, and the Public.
- General Standards
- Concrete Standards
- Street Standards
- Water Standards
- Wastewater Standards
- Stormwater Standards
- Solid Waste Standards
- 1-01 Utility Locations (PDF)
- 1-02 Utility Pedestal and Trench Detail (PDF)
- 1-03 Street Monument with Frame and Cover (PDF)
- 1-04 Backfill Class A (PDF)
- 1-05 Backfill Class C (PDF)
- 1-06 Backfill Class D (PDF)
- 1-07 Backfill Class F (PDF)
- 1-08 Identifying Tape Detail (PDF)
- 1-09 Concrete Street Repair Detail (PDF)
- 1-10 Water and Gas Valves and Monuments Adjust Utilities (PDF)
- 1-11 Curbside Mailbox Detail (PDF)
- 1-12 Clear Vision Area (PDF)
- 1-13 Disabled Parking Sign Installation (PDF)
- 1-14 Disabled Parking Stalls (PDF)
- 1-15 Parking Layout Dimensions (PDF)
- 1-16 Parking Lot Section (PDF)
- 1-17 Sidewalk Drain (PDF)
- 2-01 Driveway Location and Width Requirement (PDF)
- 2-02 Retention Swale (PDF)
- 2-02A Narrow Retention Swale (PDF)
- 2-03 Inlet Apron (PDF)
- 2-04 Valley Gutter (PDF)
- 2-05 Detectable Warning for Pedestrian Access (PDF)
- 2-06 General Notes for All Types of Curb And Gutter (PDF)
- 2-07 High Black Curb and Gutter Rolled Curb and Gutter (PDF)
- 2-08 Concrete Sidewalk (PDF)
- 2-09 Pedestrian Curb And Type A Curb (PDF)
- 2-10 Depressed Curb Section (PDF)
- 2-11 Double Sidewalk Ramps - Type 1 (PDF)
- 2-12 Single or Double Sidewalk Ramp - Type 2 (PDF)
- 2-13 Sidewalk Ramp - Type 3 (PDF)
- 2-14 Single Perpendicular Ramp with Buffer (PDF)
- 2-15 Single Perpendicular Ramp without Buffer (PDF)
- 2-16 Driveway Approach Split Apron Sidewalk (PDF)
- 2-17 Driveway Approach with Buffer Strip (PDF)
- 2-18 Driveway Approach Jogged Sidewalk (PDF)
- 2-19 Driveway Approach Wide Sidewalk (PDF)
- 2-20 Typical Two-Way Arterial Street Driveway Approach (PDF)
- 3-01 Private Shared Driveway 30-Foot Common Access Easement Two 10-Foot Travel Lanes (PDF)
- 3-02 Orchard Residential Street Two 10-Foot Travel Lanes (PDF)
- 3-03 Local Residential Street Typical-Infiltration Drainage (PDF)
- 3-04 Typical Local Residential Street (PDF)
- 3-05 Less Than 500-Foot Cul-De-Sac Roadway with Infiltration Drainage (PDF)
- 3-06 Less Than 500-Foot Cul-De-Sac Roadway (PDF)
- 3-07 Cul-De-Sac Design (PDF)
- 3-08 Residential Collector with Infiltration Drainage (PDF)
- 3-09 Residential Collector (PDF)
- 3-10 Paved Alley (PDF)
- 3-11 Local Commercial with Infiltration Drainage (PDF)
- 3-12 Local Commercial (PDF)
- 3-13 Industrial and Commercial Collector (PDF)
- 3-14 Minor Arterial (PDF)
- 3-15 Corner Radius (PDF)
- 3-16 Typical Rural Roadway (Within Impact Area) (PDF)
- 3-17 PG 1 of 2 Curb Extension and Mid-Block Choker (PDF)
- 3-17 PG 2 of 2 Curb Extension and Mid-Block Choker (PDF)
- 4-01 Potable and Non-Potable Waterline Separation (PDF)
- 4-02 Gate Valve Box with Assembly (PDF)
- 4-03 Combination Blowoff and Sampling Tap (PDF)
- 4-04 Thrust Blocking Detail (PDF)
- 4-05 PG 1 of 2 Typical Water Meter of Utility Marker Location (PDF)
- 4-05 PG 2 of 2 Typical Water Meter or Utility Marker Location (PDF)
- 4-06 Standard 3 4-Inch Water Service Connection (PDF)
- 4-07 Standard 1-Inch Water Service Connection (PDF)
- 4-08 Standard 1.5-Inch Water Service Connection (PDF)
- 4-09 Standard 2-Inch Water Service Connection (PDF)
- 4-11 Reduced Pressure Backflow Assembly (PDF)
- 4-12 Fire Hydrant with Shut-Off Valve (PDF)
- 5-01 Wastewater Private Service Connection (PDF)
- 5-02 Wastewater Service Tap Options Detail (PDF)
- 5-03 Wastewater Type 1 Manhole (PDF)
- 5-04 Wastewater Type 1A Manhole (Shallow Manhole) (PDF)
- 5-05 Typical Pressure Wastewater System Service Connection (PDF)
- 5-06 Wastewater Concrete Manhole Collar (PDF)
- 5-07 Wastewater Manhole Frame and Cover (PDF)
- 5-08 Wastewater Manhole Channel Detail (PDF)
Industrial Pretreatment
- I-01 1,000-Gallon Grease Interceptor (PDF)
- I-02 1,000-Gallon Sand/Oil Water Separator (PDF)
- I-03 1,500-Gallon Grease Interceptor (PDF)
- I-04 1,500-Gallon Sand/Oil Water Separator (PDF)
- I-05 2,000-Gallon Grease Interceptor (PDF)
- I-06 2,000-Gallon Sand/Oil Water Separator (PDF)
- I-07 2,500-Gallon Grease Interceptor (PDF)
- I-08 2,500-Gallon Sand/Oil Water Separator (PDF)
- I-09 3,000-Gallon Grease Interceptor (PDF)
- I-10 3,000-Gallon Sand/Oil Water Separator (PDF)
- I-11 Sand Trap with Traffic Grate (PDF)
- I-12 Manhole Frame and Cover (PDF)
- 6-01 Stormwater System General Notes (PDF)
- 6-02 Stormwater Type 1 Manhole (PDF)
- 6-03 Stormwater Type 1A Manhole (Shallow Manhole) (PDF)
- 6-04 Concrete Manhole Collar (PDF)
- 6-05 Stormwater Manhole Frame and Cover (PDF)
- 6-06 Stormwater General Catch Basin Notes (PDF)
- 6-07 Stormwater Catch Basin Frame and Grate (PDF)
- 6-08 Stormwater Type 1 Catch Basin (PDF)
- 6-09 Stormwater Type 1A Catch Basin and Reduction Slab (PDF)
- 6-10 PF 1 of 2 Stormwater Standard Curb Drop Inlet (PDF)
- 6-10 PF 2 of 2 Stormwater Standard Curb Drop Inlet (PDF)
- 6-11 Special Curb Inlet Type 2 (PDF)
- 6-12 Sidewalk Drain Detail (PDF)