|TO:||All Design Section Staff|
|DATE:||December 3, 1999|
|SUBJECT:||BDM, Chapter 6 and Chapter 9 - Draft Updates|
Attached are the draft updated versions of Chapter 6 and Chapter 9 of the Bridge Design Manual. Bijan Khaleghi has worked very hard to update these two chapters. Following is a summary of the updates:
Chapter 6 Updates:
Strength of Concrete
Addition of WSDOT "Supergirders"
Shipping & Handing of prestressed girders
Design criteria for prestressed girders
Note to designers for WSDOT "Supergirders"
Post tensioning Notes
Post tensioning Systems
Chapter 9 Updates:
LRFD supplement to spread footings, shafts and pile footings for LRFD foundation design.
These Chapter 6 & 9 updates will be included in a published BDM update within the next 6 months. Please review these draft updates and provide any comments and/or corrections directly to Bijan on or before February 29, 2000.
cc: J. A. Weigel, 47340
F. Higgins, 47340