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Proposed BDDM Changes for October, 2014

Letter from State Bridge Engineer, Bruce V. Johnson 

  
Updates to the Bridge Design and Drafting Manual

 

 

Section 1 – Design and Detailing Practices


1.3.4       Loads and Distribution- Reformat section to be compatible with LRFD format.

1.5.6.2.8  Precast Prestressed Concrete Elements – Provide guidance on intermediate diaphragm placement.

1.9.1     Deck Design and Detailing – P/T anchorage exception to the #6 bar limit in deck reinforcement.

 
1.10.5.5(12) Drilled Shaft Reinforcement – Clarify drilled shaft reinforcing requirements.
 
1.10.5.5(14) Drilled Shaft Cover Requirements – Address shaft vs column size & spacing between rebar cages to be feasible with all shaft diameters.
 
1.13.1 Bridge Rail- Provide guidance on design deviations and exceptions, provide crash test data and clarify crash test requirements.
 
1.26.5   Pile Corrosion Protection- Provide pile corrosion rates for foundation design and guidence on methods of protecting piles.   
 
1.30.2.1     Strengthening of Bridges – Specify FRP strengthening system material data in to assist future evaluation and load rating.

  

Section 2 – Drafting Practices

None

 

Section 3– Procedures and Layout

None

 

Update Summary