TS&L Expectations

1. TS&L Expectations What is included in a TS&L?

2. TS&L Expectations Per BDDM 1.1.2.11 – The end product of a TS&L design includes: • TS&L Plan and Elevation Drawing • TS&L Estimate of structure construction cost • TS&L Narrative Also necessary to justify the package above: Sketches of alternate bridge types considered Cost estimates of alternate bridge types considered

3. TS&L Expectations What other important element is missing? TS&L Checklist

4. TS&L Expectations How many alternates should be considered? 3 – Including the selected type

5. TS&L Expectations What kind of alternates can/should be considered? ABC vs. Conventional Single Span vs. Multi-span Steel vs. Concrete Spliced / PT Precast vs. Cast-in-Place A 1010 Steel Spread Footings vs. Piles Precast Decks Bridge vs. Culvert Precast caps

6. TS&L Expectations What is included in the TS&L Narrative?

7. TS&L Expectations BDDM 1.1.2.11(3) lists a general outline of possible discussion items. The word “possible” in the above does not really capture the expectation. The wording needs to be changed to say something like, “… a general outline of discussion items. Include all items that apply.”

8. TS&L Expectations Include all applicable items in the list plus: Discussion of alternate types considered or reasons why alternates were not considered. • Discussion of any unusual design elements, such as: • Sheet pile abutments • Aesthetic treatments • Experimental features • Special features required by other agencies

9. TS&L Expectations Questions / Comments ? A draft BDDM update will be prepared for the April 2012 update.