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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.

Numbersort icon Title Revision Download
WW4-04

Service Lateral Connection to C.I.P.P. Lined Sewer Pipe

01/01/2018
WW4-03

Service Lateral Connection to HDPE Pipe

01/01/2018
WW4-02

Compression Fitting Into Cored Wall Tapping Tee

01/01/2018
WW4-01

Wastewater Strap-On Type Tapping Tee

01/01/2018
WW3-03

Sewer Cleanout (Outside Traffic Areas)

01/01/2018
WW3-02

Sewer Cleanout (Traffic Areas Only)

01/01/2018
WW3-01

Residential Service Lateral

01/01/2018
WW2-04

Manhole Step

01/01/2018
WW2-03

Watertight Manhole Frame & Cover

01/01/2018
WW2-02

Suburban Manhole Frame & Cover

01/01/2018
WW2-01

Standard Manhole Frame & Cover

01/01/2018
WW1-05

Outside Drop Manhole

01/01/2018
WW1-04

Cast-In-Place Manhole Base

01/01/2018
WW1-03

Manhole Bench and Channels

01/01/2018
WW1-02

Standard Manhole

01/01/2018
WW1-01

Flattop Manhole

01/01/2018
W6-01

Typical Valve Box

01/01/2018
W5-04

Gravity Thrust Block

01/01/2018
W5-03

Thrust Blocking

01/01/2018
W5-02

Typical Straddle Block Pipe Clamp

01/01/2018
W5-01

Typical Concrete Straddle Block

01/01/2018
W4-01

Typical Fire Hydrant Assembly

01/01/2018
W3-01B

Standpipe

01/01/2018
W3-01A

Air Valve Assembly

01/01/2018
W2-01

Typical 2" Blow-Off Assembly

01/01/2018
W1-02

Typical Fire Sprinkling Service Line

01/01/2018
W1-01D

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

01/01/2018
W1-01C

Lake Oswego Meter Box Cover With AMR Hole

01/01/2018
W1-01B

Typical Water Service Connection Detail For 3" & 4"

01/01/2018
W1-01A

1" Water Service Assembly

01/01/2018
SD7-01

Standard Roof Drain Outlet Box

01/01/2018
SD6-01C

Box Frame & Grate for Ditch Inlet

01/01/2018
SD6-01B

Slanted Frame & Grate for Ditch Inlet

01/01/2018
SD6-01A

Standard Ditch Inlet

01/01/2018
SD5-03B

Inlet Catch Basin (CG-48)

01/01/2018
SD5-03A

Inlet Catch Basin (CG-30)

01/01/2018
SD5-02

Catch Basin Frame & Grate

01/01/2018
SD5-01D

Type "G" Catch Basin

01/01/2018
SD5-01C

Curb & Gutter Detail "A"

01/01/2018
SD5-01B

Oversize Curb & Gutter Catch Basin (CG-2)

01/01/2018
SD5-01A

Curb & Gutter Catch Basin (CG-1)

01/01/2018
SD4-01B

Cleanout (Outside Traffic Areas Only)

01/01/2018
SD4-01A

Cleanout (Traffic Areas Only)

01/01/2018
SD3-01

Hood Specifications for Catch Basins & Water Quality Structures

01/01/2018
SD2-02

Tamperproof Storm Manhole Frame & Cover

01/01/2018
SD2-01

Standard Storm Manhole Frame & Cover

01/01/2018
SD1-03B

Pollution/Flow Control Manhole Details

01/01/2018
SD1-03A

Pollution/Flow Control Manhole

01/01/2018
SD1-02

Dry Well

01/01/2018
SD1-01

Inside Drop Manhole

01/01/2018
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