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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.

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Presentation on theme: "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."— Presentation transcript:

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

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

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

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

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

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

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

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

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


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