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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.

Number Title Revisionsort icon Download
S6-04

Asphalt Repair for Newly Paved Road

01/01/2018
S7-01

Local Speed Bump

01/01/2018
S7-02

Neighborhood Collector Speed Bump

01/01/2018
S7-03

Typical Landscape Median Curb Section

01/01/2018
S10-01

Typical Above-Ground Power Receptacle

01/01/2018
S10-02

Typical Tree Well Power Receptacle

01/01/2018
WW1-01

Flattop Manhole

01/01/2018
WW1-02

Standard Manhole

01/01/2018
WW1-03

Manhole Bench and Channels

01/01/2018
WW1-04

Cast-In-Place Manhole Base

01/01/2018
WW1-05

Outside Drop Manhole

01/01/2018
WW2-01

Standard Manhole Frame & Cover

01/01/2018
WW2-02

Suburban Manhole Frame & Cover

01/01/2018
WW2-03

Watertight Manhole Frame & Cover

01/01/2018
WW2-04

Manhole Step

01/01/2018
WW3-01

Residential Service Lateral

01/01/2018
WW3-02

Sewer Cleanout (Traffic Areas Only)

01/01/2018
WW3-03

Sewer Cleanout (Outside Traffic Areas)

01/01/2018
WW4-01

Wastewater Strap-On Type Tapping Tee

01/01/2018
WW4-02

Compression Fitting Into Cored Wall Tapping Tee

01/01/2018
WW4-03

Service Lateral Connection to HDPE Pipe

01/01/2018
WW4-04

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

01/01/2018
W1-01A

1" Water Service Assembly

01/01/2018
W1-01B

Typical Water Service Connection Detail For 3" & 4"

01/01/2018
W1-01C

Lake Oswego Meter Box Cover With AMR Hole

01/01/2018
W1-01D

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

01/01/2018
W1-02

Typical Fire Sprinkling Service Line

01/01/2018
W2-01

Typical 2" Blow-Off Assembly

01/01/2018
W3-01A

Air Valve Assembly

01/01/2018
W3-01B

Standpipe

01/01/2018
W4-01

Typical Fire Hydrant Assembly

01/01/2018
W5-01

Typical Concrete Straddle Block

01/01/2018
W5-02

Typical Straddle Block Pipe Clamp

01/01/2018
W5-03

Thrust Blocking

01/01/2018
W5-04

Gravity Thrust Block

01/01/2018
W6-01

Typical Valve Box

01/01/2018
XLS