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City of Lake Oswego
Willamette River railroad bridge

Public Works Standard Details

The following index lists the City's Standard Details, hereinafter "Details," for construction of public improvements. The Details can be accessed individually for review or downloading by clicking on the detail number.  They are available in AutoCAD, JPG, and Adobe Acrobat.

These Details are intended for use by design professionals for the design and construction of public improvements required to provide service to private development but which are owned and maintained by the City of Lake Oswego. They should also be used for the design and construction of privately owned and maintained facilities to be located in City owned rights-of-way and/or to be connected to City owned facilities.

It is expected that changes in technology, materials of construction, and contractors' means and methods will require periodic revision of these Details. However, modification of these Details without express approval by the City Engineer is prohibited. Your assistance in reporting any errors and providing suggestions for additions, deletions or revisions to maintain these Details is welcomed and appreciated. Inquiries regarding current or imminent revisions, suggestions, and reports of errors or omissions should be directed to the City Engineer.

We try to update these details on a regular basis, however, we do not guarantee that the most recent version will be published on this site.  To guarantee that the most up-to-date version is available on this web site, please contact the Engineering Department at 503-635-0270 or email. 

  • E - Erosion Control
  • S - Street
  • SD - Storm
  • W - Water
  • WW - Wastewater
Numbersort icon Title Revision Download
W7-02

Typical Installation "Reduced Pressure" Principle Backflow Prevention Device

04/18/2013
W7-01

Typical Installation "Double Check Valve" Backflow Prevention Device

04/17/2013
W6-01

Typical Valve Box

04/16/2013
W5-04

Gravity Thrust Block Details

04/13/2013
W5-03

Thrust Blocking Details

04/12/2013
W5-02

Typical Straddle Block Pipe Clamp Detail

04/09/2013
W5-01

Typical Concrete Straddle Block Detail

04/08/2013
W4-01

Typical Fire Hydrant Installation

04/08/2013
W3-01B

Standpipe Detail

03/22/2013
W3-01A

Air Valve Assembly Detail

02/25/2013
W2-01

Typical 2" Blow-Off Assembly

02/25/2013
W1-02

Typical Fire Sprinkling Service Line

02/25/2013
W1-01D

Typical Water Service Connection Detail 3" and 4"

02/25/2013
W1-01C

Typical (1 1/2" to 2") Schedule 80 Water Service Connection Detail

02/21/2013
W1-01B

Typical Water Service Connection Detail 1 1/2" to 2"

02/20/2013
W1-01A

1" Water Service Assembly

03/11/2013
SD8-02

Typical Parking Lot Detention Facility

08/23/2012
SD8-01

Typical Closed Detention Pipe

07/18/2012
SD7-01

Standard Roof Drain Outlet Box for Mountable Curb

06/14/2012
SD6-01D

Standard Ditch Inlet w/Snout & Bio-Skirt

08/17/2012
SD6-01C

Box Frame & Grate for Ditch Inlet

08/16/2012
SD6-01B

Slanted Frame & Grate for Ditch Inlet

08/16/2012
SD6-01A

Standard Ditch Inlet

08/15/2012
SD5-04

Pollution Control Box

08/22/2012
SD5-03B

Type "G" Catch Basin Frame & Grate

08/22/2012
SD5-03A

Type "G" Catch Basin

08/21/2012
SD5-02C

Oversize Catch Basin Grate (CWS Drawing No 170-ST)

07/26/2012
SD5-02B

Oversize Catch Basin Frame (CWS Drawing No. 170-ST)

06/14/2012
SD5-02A

Oversize Gutter and Curb Inlet Catch Basin (CG-2)

08/26/2012
SD5-01D

Gutter and Curb Catch Basin Grate (CG-1) (CWS Drawing No. 150-ST)

05/07/2012
SD5-01C

Gutter and Curb Catch Basin Frame (CG-1) (CWS Drawing No. 150-ST)

05/03/2012
SD5-01B

Gutter and Curb Catch Basin (CG-1) Detail "B" (CWS Drawing No.140A)

05/01/2012
SD5-01A

Gutter and Curb Catch Basin (CG-1) Detail "A" (CWS Drawing No. 140B)

04/27/2012
SD1-09

Inside Drop & Connection to Existing Manhole

03/23/2012
SD1-08B

Pollution/Flow Control Manhole Details

03/22/2012
SD1-08A

Pollution/Flow Control Manhole/F/

03/20/2012
SD1-07

Precast Sump (Dry Well)

03/16/2012
SD1-06

Inside Drop Manhole

03/14/2012
S9-01

Permanent Signing

02/11/2013
S8-01

Striping Details

01/28/2013
S7-04

Typical Landscape Median Curb Section

01/22/2013
S7-03

Neighborhood Collector Speed Bump

01/18/2013
S7-02

Local Residential Speed Bump

01/15/2013
S6-04

Trench Patch for Collectors and Arterials Using CDF

01/15/2013
S6-03

Trench Patch

01/03/2013
S6-02

Trench and Patch Detail for Utility Cuts in Streets Where Geotextile is Present

01/02/2013
S6-01

Water and Sewer Trench Backfill Details

01/03/2013
S5-03

Typical Barricade

12/12/2012
S5-02

Town and Country Residential Street Light

11/27/2012
S5-01

Bollard Detail

11/27/2012