Memorandum



August 21, 2003


TO:                  All Design Section Staff - 47340

FROM:            J. Kapur - 47340

PHONE:          705-7209

SUBJECT:       Detailing Procedure for Retaining Walls

In order to keep the stations increasing from left to right, retaining walls are being detailed by

a)  Looking at the front face when the wall is located to the left of the survey line, and
b)  Looking at the back face when the wall is located to the right of the survey line.

All views shown in the LAYOUT SHEET must be from left to right in the direction of increasing roadway stationing and mileposts - to be consistent with WSDOT Plans Preparation policy and general PS&E consistency. To improve practicality in the field, the following guidelines shall be used for drawing the subsequent WALL ELEVATION sheets.

Walls Located Left of Survey Line:

Wall elevation shall be drawn with stations increasing left to right, looking at the front face of the wall.

Walls Located Right of Survey Line:

Wall elevation shall be drawn with stations decreasing from left to right, looking at the front face of the wall.



JK:dsb

cc:   J. A. Weigel, Bridge and Structures - 47340