ACTIVE DESIGN MEMORANDUMS
MEMORANDUMS NOT INCLUDED IN THE LATEST UPDATE OF THE BRIDGE DESIGN MANUAL
|
| Number |
Date |
Subject |
14-2009
|
10/28/2009
|
Prestressed Girder Dimensions and Allowable Concrete Compressive Stress
|
13-2009
|
10/06/2009
|
Design of Steel Reinforced Elastomeric Bearings
|
12-2009
|
08/20/2009
|
Confinement Reinforcement for Columns and Shafts
|
11-2009
|
07/17/2009
|
LRFD Guide Specs For Pedestrian Bridges
|
10-2009
|
07/15/2009
|
Skin Reinforcement Requirement
|
09-2009
|
07/07/2009
|
Interface Shear Transfer - Shear Friction Design
|
08-2009
|
06/23/2009
|
Reduced Column Base Fixity
|
07-2009
|
05/06/2009
|
Electronic Plan Sharing Policy
|
06-2009
|
04/22/2009
|
Curved Precast Girders
|
05-2009
|
04/16/2009
|
Computer Generated Design Calculations
|
04-2009
|
04/10/2009
|
AASHTO Guide Specifications for LRFD Seismic Bridge Design Amendments
|
03-2009
|
03/18/2009
|
Deep Foundation Program Options
|
02-2009
|
03/14/2009
|
Minimum Depth Limitations on Precast Slab Members
|
17-2008
|
12/15/2008
|
Load Rating Requirement for Complex Bridges
|
16-2008
|
12/12/2008
|
Approach Slab Details
|
13-2008
|
10/02/2008
|
Bridge Mounted Signs
|
11-2008
|
09/05/2008
|
Maximum Superstructure Length
|
10-2008
|
08/04/2008
|
Wall Type Design and Stamping/Signing Responsibilities for Special Design Retaining Walls
|
09-2008
|
07/28/2008
|
Full Depth Intermediate Diaphragms
|
08-2008
|
07/18/2008
|
Column-Shaft Connection Design and Detailing Recommendation
|
06-2008
|
06/04/2008
|
Bridge and Structures Office Contract Plan Seal and Signature Policy
|
04-2008
|
05/16/2008
|
Positive Moment Connection at Intermediate Piers
|
02-2008
|
02/08/2008
|
STD Plan Retaining Wall
|
01-2008
|
01/29/2008
|
Steel Truss Bridge Gusset Plates
|
16-2007
|
12/06/2007
|
LRFD General Notes - Pile Foundation
|
15-2007
|
11/29/2007
|
Pipeline Encasement
|
13-2007
|
10/03/2007
|
New Limits for Long Span Prestressed Girders
|
12-2007
|
09/13/2007
|
LRFD Shear Design
|
11-2007
|
08/28/2007
|
Web bursting Reinforcement for Curved Post-Tensioned Bridges
|
10-2007
|
07/10/2007
|
Damaged Prestressed Girder Replacement Protocol
|
09-2007
|
05/24/2007
|
Load Factor for Live Load in Extreme Event I
|
08-2007
|
05/18/2007
|
Bridge Deck Overlay
|
07-2007
|
05/16/2007
|
Soldier Pile and Lagging Design Requirements
|
06-2007
|
04/30/2007
|
AASHTO LRFD 4th Edition 2007
|
05-2007
|
04/16/2007
|
Noise Barrier Wall on Bridges and Retaining Walls
|
04-2007
|
03/04/2007
|
Revisions to Prestress Losses
|
02-2007
|
01/23/2007
|
Bridge Design Office Guidelines on QC/QA
|
01-2007
|
01/18/2007
|
Simplified Wind Load
|
11-2006
|
12/23/2006
|
Splitting Resistance of Pretensioned Anchorage Zones
|
10-2006
|
11/28/2006
|
Elastomeric Bearing for Prestressed Girders
|
09-2006
|
10/08/2006
|
Flexural Resistance Factor
|
07-2006
|
08/26/2006
|
Restriction on CIP Reinforced Concrete Box Girder Superstructures
|
06-2006
|
08/20/2006
|
Design Guidance for Non-Redundant Steel Box Girder Bridges
|
05-2006
|
08/12/2006
|
A-Dimension Revisions
|
04-2006
|
07/26/2006
|
Spliced-Girder Closures
|
02-2006
|
04/20/2006
|
CDF for Soldier Pile Tieback Walls
|
01-2006
|
02/27/2006
|
Concrete Deck Slab Reinforcement
|
05-2005
|
09/06/2005
|
LL Distribution Factor for CIP Box Girders
|
04-2005
|
09/06/2005
|
Use of Deck Members for Bridges
|
03-2005
|
04/06/2005
|
Steel Reinforced Elastomeric Bearing Design
|
02-2005
|
03/07/2005
|
Mylar Modification Policy
|
01-2005
|
03/01/2005
|
Prestressed Girder Dimensions
|
04-2004
|
08/16/2004
|
Cost Estimate Review Procedures
|
01-2004
|
03/18/2004
|
Release of Temporary Strands In Prestressed Girders
|
03-2003
|
11/20/2003
|
LRFD Deck Overhang Design Parameters
|
01-2003
|
08/21/2003
|
Detailing Procedure for Retaining Walls
|
13-2002
|
10/24/2002
|
BDM Section 9.2-4 Location of Confinement Zones, Extension of Reinforcing Into Crossbeams, Footings and Shafts
|
12-2002
|
09/30/2002
|
Concrete Deck Slab Details
|
11-2002
|
09/25/2002
|
Segment Limits For Steel Girders
|
10-2002
|
09/18/2002
|
Field Splice Tolerances
|
09-2002
|
09/17/2002
|
LRFD General Notes - Pile Foundation
|
08-2002
|
08/16/2002
|
Bridge Bearing Replacement Provisions
|
07-2002
|
07/23/2002
|
S-I-P Precast Concrete Deck Panel
|
06-2002
|
07/17/2002
|
Calculation of Shipping Losses in Prestressed Girders
|
05-2002
|
06/24/2002
|
Bridge Approach Slab Layout
|
04-2002
|
04/02/2002
|
CIP Fascia Panels on Soldier Piles
|
02-2002
|
02/26/2002
|
Hydraulic Jack Design Requirements
|
01-2002
|
02/25/2002
|
LRFD Seismic Design
|
16-2001
|
12/04/2001
|
LRFD Wingwall Design
|
15-2001
|
12/04/2001
|
Long Span Prestressed Girders
|
14-2001
|
11/09/2001
|
Bridge Approach Slabs
|
13-2001
|
10/23/2001
|
Hydraulic Jack Design Requirements
|
12-2001
|
09/18/2001
|
Prestressed Concrete and Steel I Girder Bridge Widening
|
10-2001
|
08/17/2001
|
LRFD Deck Overhang Design
|
09-2001
|
07/12/2001
|
Anchor Bolt Specifications
|
06-2001
|
06/11/2001
|
Steel Reinforced Elastomeric Bearings
Method A Design Procedure
|
05-2001
|
06/04/2001
|
Bridge Drain Types 7 and 8
|
03-2001
|
05/14/2001
|
Design Policy Memo - C-I-P Load Distribution
|
02-2001
|
04/24/2001
|
Prestressed Girder Stops - (Construction Plan Details)
|
01-2001
|
04/13/2001
|
Prestressed Girder Stops
|
07-2000
|
11/01/2000
|
BDM, Section 8.3.2-1 Bridge Traffic Barriers
|
06-2000
|
07/13/2000
|
Modification of Bridge and Structures Office Policy Shoring Design for Structures Adjacent to Railroads
|
04-2000
|
04/30/2000
|
Archiving Design Calculations, Design Files, and S&E Files
|
03-2000
|
04/18/2000
|
Unit Weight of Reinforced Concrete
|
02-2000
|
04/17/2000
|
Approval to use of 11"x17" Paper Plan Sheets
|
07-1999
|
12/22/1999
|
Stiffness of RC Column in seismic analysis
|
06-1999
|
12/21/1999
|
Concrete Surface Finishes
|
03-1997
|
08/01/1997
|
LFD Fatigue Criteria
|
02-1997
|
07/29/1997
|
BDM Section 9.2-4 Location of Confinement Zones Extension of Confinement Reinforcing Into Crossbeams and Footings
|
INACTIVE DESIGN MEMORANDUMS
MEMORANDUMS INCLUDED IN THE LATEST UPDATE OF THE BRIDGE DESIGN MANUAL
|
| Number |
Date |
Subject |
01-2009
|
02/10/2009
|
Skin Reinforcement Requirement
|
15-2008
|
11/14/2008
|
AASHTO Guide Specifications for LRFD Seismic Bridge Design Amendments
|
14-2008
|
10/16/2008
|
Prestressed Girder Dimensions and Span Capability
|
12-2008
|
09/12/2008
|
Deep Foundation Program Options and Design Force Demand
|
07-2008
|
06/18/2008
|
DFSAP Program Limitation
|
05-2008
|
05/16/2008
|
Computer Generated Design Calculations
|
03-2008
|
02/18/2008
|
Implementation of LRFD Guidelines for Seismic Bridge Design
|
17-2007
|
12/31/2007
|
Implementation of LRFD Guidelines for Seismic Bridge Design
|
14-2007
|
11/02/2007
|
Pile Types
|
03-2007
|
02/28/2007
|
Stamping/Signing Responsibilities for Special Design Retaining Walls
|
08-2006
|
09/26/2006
|
ASTM A 706 Reinforcement Requirement
|
03-2006
|
07/06/2006
|
Electronic Plan Sharing Policy
|
03-2004
|
07/22/2004
|
Shaft Design and Detailing Recommendations / Pile Detailing
|
02-2004
|
04/01/2004
|
Spiral Lap Splice Deleted
|
02-2003
|
10/28/2003
|
Column and Shaft Spirals Options
|
03-2002
|
03/19/2002
|
LRFD Shear Design
|
11-2001
|
09/10/2001
|
LRFD Seismic Design
|
08-2001
|
06/18/2001
|
Pretensioned Anchorage Zones
|
07-2001
|
06/18/2001
|
Shear Design
|
04-2001
|
05/24/2001
|
Abutment Backfill Load Case
|
05-2000
|
07/13/2000
|
AASHTO LRFD Article 5.8.3.5, Longitudinal Reinforcement Requirement
|
01-2000
|
04/05/2000
|
Modification of Bridge and Structures Office Contract Plan Signature Policy
|
10-2000
|
01/10/2000
|
Reinforced Elastomeric Bearing Pad Shims
|
08-1999
|
12/22/1999
|
Bridge Traffic Barrier Policy
|
05-1999
|
12/03/1999
|
BDM, Chapter 6 and Chapter 9 - Draft Updates
|
04-1999
|
08/17/1999
|
Approved Computer Software for Structural Design
|
03-1999
|
03/19/1999
|
Drilled Shafts Revisions to BDM
|
02-1999
|
02/22/1999
|
Prestressed Girder Design Procedures (LRFD)
|
01-1999
|
02/22/1999
|
Peak Ground Accelerations Used For Bridge Design
|
06-1998
|
08/20/1998
|
Pile Casing Sizes
|
05-1998
|
08/11/1998
|
Contract Administration Issues Bridge Designers Guide
|
04-1998
|
07/16/1998
|
Posting Bridge Design Schedule
|
03-1998
|
06/17/1998
|
Load Rating of Bridges
|
02-1998
|
06/16/1998
|
Change Orders and As-Built Drawings
|
01-1998
|
04/20/1998
|
Mechanically Stabilized Earth (MSE) Supported Abutments
|
05-1997
|
12/11/1997
|
Seismic retrofit of Columns
|
04-1997
|
08/08/1997
|
Peak Ground Acceleration Map Used for Bridge Design
|
01-1997
|
06/25/1997
|
Modification of Bridge & Structures Office Plan Signature Policy
|
02-1996
|
07/26/1996
|
Coordination with Bridge and Structures Office Architect
|
01-1996
|
02/05/1996
|
LFD Fatigue Criteria
|
12-1995
|
12/01/1995
|
Traffic Barrier Details
|
11-1995
|
08/17/1995
|
Drilled Shaft Foundations
|
10-1995
|
08/16/1995
|
LRFD - Section 3.10.3 Importance Categories
|
09-1995
|
08/10/1995
|
Modifications To BDM, Section 5.5.2,B
|
08-1995
|
08/10/1995
|
Minimum Velocity-Related Acceleration Coefficient for Western Washington
|
07-1995
|
08/10/1995
|
BDM Update Sheet Expansion Joint Details
|
06-1995
|
07/28/1995
|
Maximum Size of PT Tendons
|
05-1995
|
05/25/1995
|
Detailing Bolts
|
04-1995
|
03/20/1995
|
Prestressed Girder End Detailing at Intermediate Piers
|
03-1995
|
02/02/1995
|
Review of Preapproved Proprietary Retaining Wall Shop Drawings/Design
|
02-1995
|
01/23/1995
|
Drilled Shaft Foundations
|
01-1995
|
01/13/1995
|
Determination of Class Concrete for Bridge Design During Preparation of the Preliminary Bridge Plan
|
13-1994
|
12/30/1994
|
Concrete Fill for Soldier Pile Walls
|
12-1994
|
10/21/1994
|
Review of Shop Drawings for Post Tensioned Structures
|
11-1994
|
09/27/1994
|
Determination of Class of Concrete for Bridge Design During Preparation of the Preliminary Bridge Plan
|
10-1994
|
07/19/1994
|
Prestressed Girder Straight Strand Patterns
|
09-1994
|
07/07/1994
|
Architectural Columns - Detailing for EQ Resistance
|
08-1994
|
05/02/1994
|
Designing Bridges for Future Overlay
|
07-1994
|
05/02/1994
|
Use of Approach Slabs for Bridge Ends
|
06-1994
|
05/02/1994
|
Detailing for Roadway Slab With Roadway Crown Between Girders
|
05-1994
|
05/02/1994
|
Catwalks on VMS Sign Supports
|
04-1994
|
04/28/1994
|
Expansion Joints on Bridges
|
03-1994
|
03/07/1994
|
Positive Longitudinal EQ Moment at Interior Pier for a Continuous Concrete Bridge
|
02-1994
|
03/02/1994
|
Use of HS-25 Load as a "Design" Load
|
01-1994
|
03/02/1994
|
AASHTO Section 5.5.5,F. S. of Sliding for Retaining Walls
|
