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# Florida Department of Transportation

JEB BUSH GOVERNOR | 605 Suwannee Street Tallahassee, FL 32399-0450 | JOSE ABREU SECRETARY

February 15, 2005

MEMORANDUM

TO: | All Users of the Florida Department of Transportation Structures Design Guidelines, Structures Detailing Manual, and Structures Standard Drawings.
FROM: | William N. Nickas, State Structures Design Engineer
COPIES: | State Highway Engineer, Freddie Simmons; Director Office of Design, Bob Greer; FHWA, Jeffery Ger; State Structures Design Engineers (David O'Hagan, Robert Robertson, Jack Evans, Larry Sessions, and Marc Ansley); State Geotechnical Engineer, Larry Jones; District Structures Design Engineers (Gerard Moliere, Rod Nelson, Keith Shores, John Danielsen, Neil Kenis, Kim Saing, Jose Rodriguez, and Agnes Spielmann); District Structures and Facilities Engineers (Pepe Garcia, Keith Campbell, John Locke, Jose Quintana, Ron Meade, Frank Guyamier, Chris Toenjes)
SUBJECT: | Structures Manual including the Structures Design Guidelines (Topic No. 625-020-154-b), Structures Detailing Manual (Topic No. 625-020-200-e), and Structures Standard Drawings (Topic No. 625-020-300-g).

The Florida Department of Transportation Structures Design Office has officially released the January 2005 Structures Design Guidelines, Structures Detailing Manual, and Structures Standard Drawings. Copies of the Design Guidelines, Detailing Manual, and Standard Drawings are now part of the Structures Manual, and can be downloaded from the Structures Office website at www.dot.state.fl.us/structures.

The Structures Manual is a web based html format including hyperlinks, easy navigation, indexes, and advanced search capabilities. PDF's for the Guidelines and Detailing Manual are included for printing purposes. Standard Drawings and Drawing Examples are available in both MicroStation format (dgn files) and PDF format.

The Structures Manual is updated every six months (January and July) and serves as the single source for FDOT design criteria for structural designs prepared by the Department and consultant designers. All users of the Manual are encouraged to submit suggestions to improve and further develop the contents thereby providing maximum assistance to the structural engineering community. Submit any suggestions to David O’Hagan, Florida Department of Transportation, 605 Suwannee Street, MS 33, Tallahassee, Florida 32399-0450, or e-mailed to David.O'Hagan@dot.state.fl.us.

The design criteria shall be incorporated on all future projects and on those projects currently being developed (i.e., when design and detailing has not already reached final stages). Where incorporation is not feasible, a request for a variance shall be submitted. For specific questions about the Manual, or its application to a particular project, contact the appropriate District Structures Design Office.

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SDG Revisions January 2005
1.7 | Load Rating | TDB C05-01, Added new section.
2.1.2 | Design Permit Vehicles | TDB C05-01, Added new section.
3.12 | Retaining Wall Types | Revised for walls founded on embankments.
3.13.3. E. | Soil Reinforcement | Revised to clarify steel reinforcement requirements.
3.13.12 | Minimum Front Face Embedment | Revised to clarify that permanent walls comply with Figure 3-19.
4.2.11 | Skewed Decks | Clarifies that longitudinal reinforcement be placed along full width of deck.
4.5.2 | Prestress | Modified to require accounting for secondary effects.
4.6.1 | Access and Maintenance | Added 300 ft spacing requirement for access doors.
4.6.4 | Design Requirements for Cantilever Bridges with Fixed Pier Tables | Added section.
4.6.9 | Transverse Deck Loading | TDB C05-01, Revised entire section.
4.6.10 | Span-by-Span Segmental Diaphragm Details | Requires tendon anchorages at high points in diaphragm, prohibits arching tendons, prohibits piercing top slab.
4.6.11 | Analytical Methods for Load Rating | TDB C05-01, Added new section.
5.5 | Minimum Steel Dimensions | Deleted reference to one-sixteenth inch material and revised plate thickness for one-eighth and half-inch increments.
5.6.2 | Access and Maintenance | Added 300 ft spacing requirement for access doors.
5.11.1 | Slip Resistance | TDB C04-5. Revised bolted connections for Class A surface condition.
7.1.1 | Load Rating | TDB C05-01, Revised entire section.
7.3.3 | Analysis and Design | Deleted use of “LRFD for the distribution of live load.”
9.2 | BDR Cost Estimating | Updated component costs and New Construction costs to 2004.

SDM Revisions January 2005
2.1 | Detailing | Requires EOR Constructability review of all plan details.
8.3 | Combining Details | Deleted section.
9.5 | Combining Details | Deleted section.
14.1 | General Detailing | Added reference to AASHTO/NSBA Documents G 1.1-2000 & G 1.2-2003; renumbered sections.

QPL Acceptance Criteria January 2005
Chapter 2 Sound Barriers | TDB C04-07, Revised for Loading and soil properties, Flame Spread, Impact Resistance.