Txdot haunch design. Haunch should be set to .

Txdot haunch design The slab and wall thickness must not be less than that shown in the design by more than 1/4 in. Thank you for listening! Questions and Comments? 7/7. The designs AASHTO LRFD Bridge Design Specifications. 2" exceeds 3 1 in all areas where measured haunch NOTE: The slab offset is known in WSDOT jargon as the "A" Dimension and in TxDOT jargon as the "X" Dimension. 7, Sec 21 Distance of hold down point from centerline of bearing = 108. As per the recommendations of TxDOT Bridge Design Manual Chap. 2" exceeds 3 1 in all areas where measured We prepare construction contracts for bid in most areas of highway design--from roadway geometrics to landscape design. However, in practice the only effects that can be computed with reliable accuracy are the roadway geometry effects. 600” 270 ksi low-relaxation strand Interior and exterior beam design 0. Bridge Detailing Guide i. You can also browse by title, or browse a list of the recently modified manuals For details of roadway safety design which governs ditch shape design, see the Roadway Design Manual, Chapter 2, Section 6, Slopes and Ditches, and Median Design, and Chapter 2, Section 7, Side Ditches. Polystyrene or other suitable compressible Bridge Design Specifications. 1 Introduction. P end dia = 3. Microstation Version 8 self-extracting design files are available for developing project specific details for each theme. For TxGirders: o The maximum haunch without reinforcing is 3 %A". Push-out Test. at any point on a girder, reinforce the haunch as instructed by standard drawing IGMS. Haunch. When the strand pattern differs from the destination design, or if more than 6" is cut off one or both beam ends, a replacement shop plan for the permanent record must be provided Maximum Minimum DC: Components and Attachments for the evaluation of system redundancy as specified in the TxDOT Bridge Design Manual Chapter 3, Section 17, for Extreme Event III only. Data and maps Reference maps Planning and Programming Phase are also used in the Preliminary Design and Design Phases. Share this document with a friend. Haunch should be set to LRFD Bridge Design Specification that TxDOT has adopted, i. This design is for a typical single span steel S l a b H a u n c h B e a m X X 1 2 1 1 2 B r g b u i l d u p B r g p a d = Slab + Haunch + Beam + Brg pad + Brg buildup X = Height of backwall (with no approach slab) = Deduct thickness of design computations for arch, integral arch and headwall and wingwall units. Section 1 discusses general recommendations for prestressed concrete beam and girder design, including limiting the concrete strength at release of prestressing tension to a maximum of 6 ksi due to durability ASTM C443 (max 10. 2" exceeds 3 1 in all areas where measured haunch Develop Guidance for Structural Behavior of Tall Haunches in TxDOT Beam and Girder Bridges. In the attached figure 1, the TxDOT Haunch Summary from the report is shown. This technique reduces haunch depths, dead load, and enhances aesthetics while enabling the use of deeper girders and longer spans. f’ci < 6. This beam falls into a class with box beams, double-T beams, and slab shown in the Design Tables but only one haunch dimension must be used within 8. 3/7. exceeds 3 1 BARS UP Girder Bar R H a u n c h Roadway slope 3 " C l c o v Bars UP (Typ) Panel 4" 4" o v e r 3 ½ " 8 ½ " 3 ¾" Bars UP are normally #4 bars. Greg Snider, P. A future wearing surface of 30 psf is specified. Flexure design can be refined with the Haunch Geometry and Concrete Strength options. boxes as exterior beams – Avoid slab overhangs – Boxes are oriented parallel to cross-slope, • when cross-slope is constant, • or rotated to the average cross-slope of a span when the cross slope is in transition. BAR TABLE A #4 BAR SIZE G #4 M T #4 #4 9" Conform the calculations and design sketches to the policies and procedures defined in the relevant TxDOT Manuals. Spreader Beam. Haunch analysis, design, and detailing guidelines will be provided at the conclusion of this Title: 2022 Bridge Detailing Guide-Default Created Date: 4/22/2022 9:20:43 AM The TxDOT-customized version of BridgeLink is versatile, user friendly, Windows-based software for the design, analysis, and load rating of multi-span precast-prestressed concrete bridge beams/girders in accordance with the AASHTO LRFD Bridge Design Specifications (thru the 8th Edition, 2017) and TxDOT design policies and guidelines. Epoxy Coated ~ #4 = 2'-5" Uncoated ~ #4 = 1'-7" Provide bar Laps, where required, as follows: No warranty of any kind is made by TxDOT for any purpose whatsoever. The haunch is the area between the top of a bridge girder and the bottom of the concrete deck. Yes. Analysis is performed with a detailed time-step PSTRS14, Version 6. These are reported in the TxDOT Summary and Girder Schedule Design Exception SOP for Interstate Highways Webinar - 09/18/2024 Design Exception SOP for Interstate Highways – Webinar recording - 09/18/2024 100% PS&E preparation and submittal BARS UP Girder Bar R H a u n c h Roadway slope 3 " C l c o v Bars UP (Typ) Panel 4" 4" o v e r 3 ½ " 8 ½ " 3 ¾" Bars UP are normally #4 bars. Special Design. Table 4-2 provides the design frequencies for TxDOT projects. WSDOT assumes there is no camber in the beam. : w end dia = 3[(0. 00' with 3' overhangs 3. TEXAS The Approximate Structure depth = 54" beam + 8" slab + 2" haunch = 64" 10. When using flowable backfill, the minimum allowable trench width is the pipe outside diameter plus 12 in. A thickness For cross drainage structures use TxDOT’s PSET-SC standard and for parallel drainage structures use TxDOT’s PSET-SP standard. 583 - 220 HD = 48. with As7 and As8. o All Prestressed Concrete I-Girder Spans (SIG)– Increased haunch depth IGD – In order to improve performance when impacted, added Bars C and CH over full length when VC (bridge vertical clearance) is less than or equal to 20’-0”. use empirical methods to compute excess camber. slab or haunch thickness, camber, or plan profile deck geometry. of diferent haunch parameters on the ultimate capacity of steel and PSC girder specimens was identifed. See applicable rail for Example of Rail Anchorage. Chapter 1 — About this Manual Section 1 — Introduction Bridge Design Manual - LRFD 1-2 TxDOT 11/01/2021 Section 1 Introduction Implementation Load and Resistance Factor Design (LRFD) is a design methodology that makes use of load and resistance factors based on the known variability of applied loads and material properties. To enroll in Context-Sensitive Concept TxDOT and the NFIP. Edition (2020) including enhanced verbiage for Non-Contact specified in the TxDOT Bridge Design Manual Chapter 3, Section 17, for Extreme Event III only 1. TxDOT's Council on System Safety is tasked to develop scoring tools to assist designers in evaluating potential safety enhancements during project development and design. Research Scope. Live Load Deflection For details of roadway safety design which governs ditch shape design, see the Roadway Design Manual, Chapter 2, Section 6, Slopes and Ditches, and Median Design, and Chapter 2, Section 7, Side Ditches. These are reported in the TxDOT Summary and Girder Schedule Provide guidelines specific to TxDOT policies, details, and design assumptions. Prestressed concrete I-girders were developed with input from the precast industry to exceed the performance characteristics of prestressed concrete I-beams—span length, Minimum haunch at centerline of bearing is prescribed by TxDOT Bridge Design Manual - LRFD (May 2009). Verify design meets requirements (i. ORD is the Roadway/H&H/Survey 3D modeling solution PK !ýã6‘5 ¤ [Content_Types]. Bridge Design Manual - LRFD (modified 1/22/2020) Traffic Safety Program Manual (modified 1/15/2020) Local The guideline document contains general information and examples of specific details outlining the three aesthetic design themes for the district. C TxDOT CONT DATE: FILE: TxDOT TYPICAL TRANSVERSE SECTION SECTION A-A November 2021 Field bend as shown. Height: 12-inch. Haunch dimensions may vary between the minimum and maximum dimensions or As3 at corners by welding. If Prestressed Concrete Panels are used as a forming option, find this haunch reinforcement on The haunch form material should be flexible to allow for the variations in haunch depth yet sufficiently strong to prevent leakage of the haunch fill material. 330klf) 65% relative humidity 1/2" 270 ksi low-relaxation strand, unless noted otherwise f’ ci max = 6500 psi, f’ A warning will be added to the slab haunch specification check report when the variation in haunch depth along the precast element exceeds 2 inches. Haunch Slab ~ ~ ~ (2" M i n) brg Girder Girder at 4" 4" H a u n c h Girder Bar R BARS U "B" minus 4" 2" Min, 5" Max Bars U "A" plus " 2 1 > 3 Bars U are normally #4 bars. Uncoated ~ #4 = 1'-7" Epoxy Coated ~ #4 = 2'-5" Provide bar laps, where Haunch Roadway slope Bars UP REINFORCING DETAIL HAUNCH Panel (Typ) Allowable Gap ~ ~ 6 " M in 2 4 1 5 6 8 Designed according to AASHTO LRFD Bridge Design Specifications. Partial duration intensities are recommended for storm sewer analysis. 75 + 72 + 4 + 8)/12](0. 1100kip Capacity. 20 to simulate the dynamic effects of a The “Slab Offset” is the slab plus haunch value. Search TxDOT Manuals. CAD standard plan files. LRFD Bridge Design Guide. Run the TxDOT If the presence of a roadway vertical curve forces a haunch depth greater than 3 ½ in. For design-build projects, the firm that provides the best-value bid (based on evaluation of cost, qualification of firms and project approach) is selected to design and construct the project. Before we proceed with entering data into STLBRIDGE, three Title: 2022 Bridge Detailing Guide-Default Created Date: 4/25/2022 8:32:13 AM bridge-design-guide - Free download as PDF File (. Provide backfill material meeting the In this video, Richard Pickings explores such a case and discusses how to hand-tune a design. The recently released Design Guide proposes the use of a 1" joint between phases of abutments in lieu of . 6. TxDOT 2012 refers to the AASHTO LRFD Bridge Design Specification, Sixth Edition, 2012 with modifications 2022 TxDOT Bridge Design Webinar May 17, 2022. TxDOT Conventions . 5. Design Parameters Span 1 "AASHTO LRFD" refers to the AASHTO LRFD Bridge Design Specification, 5th Ed. Products from the research program include devices, analytical tools, new materials, new or improved Discover key information that TxDOT collects on traffic safety, travel, bridges, etc. Due to the way PGSuper models the haunch concrete, TxDOT has chosen NOT to use this feature. 2018 Fall Bridge Division Webinar September 13, 2018 The TxDOT Inspector determines whether an NCR is required when a beam end will be trimmed. )? OBM supports the typical workflow in which the bridge is modeled on top of the horizontal of diferent haunch parameters on the ultimate capacity of steel and PSC girder specimens was identifed. 0 ksi; f’c < 8. Discover key information that TxDOT collects on traffic safety, travel, bridges, etc. Haunch Roadway slope Bars UP REINFORCING DETAIL HAUNCH Panel (Typ) Allowable Gap ~ ~ 6 " M in 2 4 1 5 6 8 Designed according to AASHTO LRFD Bridge Design Specifications. However, in practice the only effects that can be computed with . Guidelines; Hill Country Theme; Mission Theme; Downtown Theme BridgeLink User Guide by Texas Department of Transportation. Correct excavation and backfill if disturbed to reestablish the integrity of the bedding and backfill specified herein. Also, note that the Provide guidelines specific to TxDOT policies, details, and design assumptions. TxDOT adopted a design approach that permitted predomin antly straight strand designs (non-harped) for 2023 TxDOT Bridge and Roadway Design Conference April 18, 2023 Box Beam Design Considerations – Use 5-ft. Reinforcing bar dimensions shown are out-to-out of bar. GENERAL NOTES: (Not to be used as a standard) THERMOPLASTIC PIPE (Inches) Diameter Pipe 12 18 24 30 36 42 48 backfill into haunch and between corrugations. Design the precast units for earth loading, dead loading, HL-93 live loading, and rail impact loading. 6” diameter strand, in accordance with the October 2019 memo, New Design BEHAVIOR OF TALL HAUNCHES IN TXDOT Haunch Definition. Many agencies have their own nomenclature for slab offset dimensions and TxDOT is no exception. However, in practice the only effects that can be computed with (Showing with 2" and more of haunch. All Texas County IDF curve tables have HMACP Mixture Design: Combined Gradation (2024) Tx2MixDe14: HMACP Mixture Design: Combined Gradation (2014) Tx2MxProp: HMAC Mix Properties: Tx2Patch: Designing Patch Mix: Tx2QCQA04: QC/QA Design Data: Tx2QCQA14: 2014 QC/QA Design Data: Tx2QCQA24: 2024 QC/QA Design Data: Tx401-2: Sieve Analysis for Fine and Coarse Aggregate: Tx403-5,9 Discover key information that TxDOT collects on traffic safety, travel, bridges, etc. No warranty of any kind is made by TxDOT for any purpose Card 9 - Design Data Delete Input Card Card 10 - Design Data Create/List Input Card Card 11 - Design Data Conversion Input Card Card 12 - Command Input Scheme Card 13 - CMNT Argument Input Scheme Card Card 14 - SKIP Argument Input Scheme Card Card 15 - EJCT Argument Input Scheme Card Card 16 - CURV Argument Input Scheme A Card The TxDOT-customized version of BridgeLink is versatile, user friendly, Windows-based software for the design, analysis, and load rating of multi-span precast-prestressed concrete bridge beams/girders in accordance with the AASHTO LRFD Bridge Design Specifications (thru the 9th Edition, 2020) and TxDOT design policies and guidelines. Responding to Drainage Complaints; ♦ 8. Chapter 4: Design Surveys Anchor: #i1003099 Section 1: Design Surveys Anchor: #i1267496 Overview. The Alternative Delivery Division is responsible for TxDOT’s Alternative Delivery Program, which includes projects delivered using design-build contracts and comprehensive development agreements. until the concrete has attained the design strength specified in Section 421. Develop Guidance for Structural Behavior of Tall Haunches in TxDOT Beam and Girder Bridges. Check and design the confinement reinforcement per LRFD 5. pdf), Text File (. 2. Non-Standard Strand Introduction. Haunch geometry can be influenced by a variety of factors. Texas Department of Transportation (TxDOT) and Texas A&M Transportation Institute (TTI) developed Safer By Design (SBD) tool (formerly known as Safety Scoring Tool or SST) with the aim to provide Transportation Engineers a simple and straightforward methodology that directly incorporates data driven safety considerations into the roadway design process. Uncoated ~ #4 = 1'-7" Epoxy Coated ~ #4 = 2' 1 SP-XXXX—XX Torsion Design Example: Inverted Tee Bent Cap Camilo Granda Valencia and Eva Lantsoght Synopsis: This paper provides a practical example of the torsion design of an inverted tee bent cap of a three-span bridge. ” Place the flowable backfill across the entire width of the trench and maintain a minimum depth of 12 in. Mix design requires review and approval from the Engineer. As directed or requested, follow the design guidelines on the TxDOT website. Haunch analysis, design, and detailing guidelines will be provided at the conclusion of this o The minimum haunch at midspan is 'A" to accommodate bedding strips for prestressed concrete panels. 2 30-39 40-48 . txt) or read online for free. The training materials from the training will be posted on TxDOT Design Division H&amp;H section website. BARS UP Girder Bar R H a u n c h Roadway slope 3 " C l c o v Bars UP (Typ) Panel 4" 4" o v e r 3 ½ " 8 ½ " 3 ¾" Bars UP are normally #4 bars. 10. Load Cells. 1 – Establishes the TMUTCD BridgeLink User Guide by Texas Department of Transportation. 3. Input Deck Width. Standard Division TXDOT Bridge Webinar January 18, 2023. Jennifer Book, TxDOT Design Division. Girder skew, curve, flare, haunch, etc. The concrete mix design is performed to ensure that the concrete mix formulation meets or exceeds the specification requirements. Traffic design standards for signs, signals, and markings. C TxDOT CONT DATE: FILE: 3" 3" D Bars J Eq Spa at 1'-0" Max E H J 4" 23 G AA T K = 1'-7" 4 Eq Spa T K C Haunch Bars H 4 ES Dimensions perpendicular to edge of slab 1'-3" 6" 1 1 SECTION A-A D E Bars G Bars G 6 CL Exp Jt 7 7 8 Designed according to AASHTO LRFD Bridge Design Specifications. • Watertight Joints – A joint that provides zero leakage of water infiltration and exfiltration for a specified head or pressure application. • A program report file is generated that lists all input and selected information about the graphic design file. Provide backfill material meeting the following specifications: Type I – Provide backfill consisting of flowable fill in accordance with Item 401, “Flowable Backfill. 2*). ♦ Texas and the NFIP ; ♦ TxDOT and Local Floodplain Regulations ; ♦ Permits versus FPA Notification; ♦ Hydraulic Structures versus Insurable Structures; ♦ Off System Structures; ♦ Liability 5. HMACP Mixture Design: Combined Gradation (2024) Tx2MixDe14: HMACP Mixture Design: Combined Gradation (2014) Tx2MxProp: HMAC Mix Properties: Tx2Patch: Designing Patch Mix: Tx2QCQA04: QC/QA Design Data: Tx2QCQA14: 2014 QC/QA Design Data: Tx2QCQA24: 2024 QC/QA Design Data: Tx401-2: Sieve Analysis for Fine and Coarse Aggregate: Tx403-5,9 pipe (haunch zone) and above the center line of the pipe (initial backfill). Todd Helwig The construction shall conform to the design and details shown on the plans and to the requirements of the pertinent Items as follows: Item 420, "Concrete Structures" Item 424, "Precast Concrete Structures (Fabrication)" Item 426, "Prestressing" Item 440, "Reinforcing Steel" Item 443, "Permanent Metal Deck Forms" C TxDOT CONT TYPICAL TRANSVERSE SECTION SECTION A-A 2" AND MORE OF HAUNCH LESS THAN 2" OF HAUNCH PARTIAL PLAN FOR SLABS WITHOUT BREAKBACK PARTIAL PLAN FOR SLABS WITH BREAKBACK Designed according to AASHTO LRFD Bridge Design Specifications. 6/7. design & construction, and the operations & maintenance phases of alternative delivery projects. Economical span limit is 70 ft. Alphabetical list of the TxDOT online manuals. TxDOT 2012 refers to the AASHTO LRFD Bridge Design Specification, Sixth Edition, 2012 with modifications Set to meet AASHTO LRFD criteria and TxDOT . above the pipe. Contingency is meant to protect the project against cost increases inflation, or allow for scope creep. Hydrologic and Hydraulic Studies. 2-1 (1) For most new structures, no dead load for wearing surface is employed in design and accounting for added future wearing surface is not required. This document provides guidelines for designing bridge superstructures in Texas. Anchor: #FJXNUKUB 43 TAC §25. Retterer@txdot. 8 psi) [TxDOT DMS 4710 Section 4. Non-Standard Strand Patterns PGSuper is powerful software for design, analysis, and load rating of precast-prestressed girder bridges. Fixed rounding problems with TxDOT X, Y, and Z dimensions in the TxDOT Haunch Summary report; PGSplice™ can be used to design, check, and load rate precast-prestressed spliced girder bridges in accordance with the AASHTO LRFD Bridge Design Specification and DOT agency-specific criteria. You will not need to. Design guidelines are proposed to account for tall haunch behavior in determining the ultimate shear capacity of steel and PSC bridge girders. 75" Haunch Span 3 Specifications and TxDOT design guidelines haunch is not inline with TxDOT guidelines. Live Load Deflection If all cambers and deflections occur as predicted during design, the haunch depth at the point of least haunch depth will be exactly equal to the fillet dimension. Thus, the software is capable of periodically updating the installed templates Added feature to model mid-span slab haunch build up (Fillet dimensions) as a single value for the entire bridge, span by span, or girder Appendix A — Pretensioned Concrete TxGirder Haunch Design Guide Section 1 — Components of Haunch Bridge Design Guide A-3 TxDOT January 2020 Figure A-2: Girder After Slab is Placed Cross Slope The cross slope is the slope of the slab across the transverse section of the girder. 90 All load effects during an assumed fracture event due to both permanent and assumed transient loads shall be amplified by a The TxDOT-customized version of BridgeLink is versatile, user friendly, Windows-based software for the design, analysis, and load rating of multi-span precast-prestressed concrete bridge beams/girders in accordance with the AASHTO LRFD Bridge Design Specifications (thru the 9th Edition, 2020) and TxDOT design policies and guidelines. Run the Preliminary Girder Designer. Height: 15-inch. Read Also Design of bolted beam splice connections to Eurocode 3 Design of roof purlins. For cross drainage structures use TxDOT’s PSET-SC standard and for parallel drainage structures use TxDOT’s PSET-SP standard. Where the Roadway Design Manual requirements can’t be met, the channel will have to be enclosed in a pipe or box. 2" exceeds 3 1 in all areas where measured haunch S l a b H a u n c h B e a m X X 1 2 1 1 2 B r g b u i l d u p B r g p a d = Slab + Haunch + Beam + Brg pad + Brg buildup X = Height of backwall (with no approach slab) = Deduct thickness of approach slab (1'-1" typical) from X If the presence of a roadway vertical curve forces a haunch depth greater than 3 ½ in. 5. The r HAUNCH " 2 1 9 PCP PCP(O) 19 13 13 4 CONSTRUCTION NOTES: 5 FILE: DN: CK: DW: CK: JOB COUNTY SECT DIST REVISIONS KLM DVL JTR KLM HIGHWAY SHEET NO. 4. 862 ft. ♦ Area/ Design Office Engineers; ♦ TxDOT Contract Managers; ♦ TxDOT Project Managers; ♦ District Hydraulics Engineers ; ♦ Design Division Hydraulics Branch (DES-HYD) ♦ 6. Section properties based on final girder and slab modulus of and TxDOT design criteria are included in templates and libraries published by TxDOT on a server accessible via the Internet. the TxDOT Bridge Design Manual - LRFD. No additional measurement will be made for concrete or reinforcing steel due to a variation in camber of the beams from theoretical camber, or for additional quantities required by optional methods of forming. TxDOT uses an assumed camber. 0 ft Effective Haunch Depth, Heff = 0. Chapter 3: Superstructure Design Updates Sections 13 and 14: Steel beam/girders – Possible erection sequence – Expanded discussion on deck placement, dead load deflection, and camber. Bridge Design Manual Updates 3-29 Bridge Design Guide S l a b H a u n c h B e a m X X 1 2 1 1 2 B r g b u i l d u p B r g p a d = Slab + Haunch + Beam + Brg pad + Brg buildup X = Height of backwall (with no approach slab) = Deduct thickness of approach slab (1'-1" typical) from X %PDF-1. Haunch Geometry * Haunch geometry can be preserved during the design, or it can be designed. 34 . 10 0. TxDOT provides computer aided drawing (CAD) Standard Plan files. Camber information from PGSuper can be entered into the Camber tables in OBM. Khalid Jamil, TxDOT Design Division. Bridge Design Guide . TxDOT adopted a design approach that permitted predomin antly straight strand designs (non-harped) for Maintain trench shoring system above pipe haunch zone to not disturb during shoring removal. ♦ Before starting the design; ♦ If the project is within a participating community Haunch (See Span Details) " 3 4 2 2" = 3'-6" 12 Spaces at 3 1 length in overhang Designed according to AASHTO LRFD Bridge Design Specifications. TxDOT STANDARD PRESTRESSED BRIDGE PRODUCTS Amy E. Objectives Serve as a resource for engineers designing bridges for TxDOT. 5 ksi). Provide backfill material meeting the NOTE: The slab offset is known in WSDOT jargon as the "A" Dimension and in TxDOT jargon as the "X" Dimension. 93) = 187. Input Beam Spacing and Number of Beams. This guidance will also be provided in the future update to Chapter 3 of the TxDOT Access Management Manual. For most types of facilities a range of design The Bridge Division supports the structural planning, design, review, construction, and inspection of over 55,000 state bridges. The figure below illustrates TxDOT's "X", "Y" and "Z" dimensions. If all cambers and deflections occur as predicted during design, the haunch depth at the point of least haunch depth will be exactly equal to the fillet dimension. Traffic and Safety Analysis Procedures (TSAP) Manual Update. slab. 18 k/ft: OR. 5 %µµµµ 1 0 obj >>> endobj 2 0 obj > endobj 3 0 obj >/XObject >/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group In this video, Richard Pickings explores such a case and discusses how to hand-tune a design. o The minimum haunch at the center of bearing is 2" to accommodate the thickened slab end since the TxGirder flange is too thin to notch like the I-beam. com daids/dh60_index. Anchor: #i1024110 Other Types of Lighting. Run the TxDOT Summary Bridge designers can complete the design and details for such bridges once, and then use the same plans repeatedly to build bridges. These are reported in the TxDOT Summary and Girder Schedule Roles and Responsibilities for Hydraulic Analysis and Design. 16'. Title: PHASED CONSTRUCTION Haunch Slab ~ ~ ~ (2" M i n) brg Girder Girder at 4" 4" H a u n c h Girder Bar R BARS U "B" minus 4" 2" Min, 5" Max Bars U "A" plus " 2 1 > 3 Bars U are normally #4 bars. 3. The Texas Department of Transportation Bridge Office officially announces their plan to adopt PGSuper as TxDOT’s primary prestressed-precast bridge girder design program, and has hired BEHAVIOR OF TALL HAUNCHES IN TXDOT Haunch Definition. The design software referenced is in accordance with the 3rd Edition of the "AASHTO LRFD Bridge Design Specifications" with 2006 Interims. transportation, and slab haunch requirements. No. This page introduces the TxDOT Survey Manual, which provides guidance for planning, executing, and classifying surveys for TxDOT employees and contractors. 1. Bridge Design Guide Bridge Division August 2018 Bridge Design Guide 1-1 TxDOT August 2018 Chapter 1 About this Guide Contents: Section 1 — Introduction 1-2 Chapter 1 —&#8230; Bridge Design Guide Bridge Division August 2018 Bridge Design Guide 1-1 TxDOT August 2018 Chapter 1 About this Guide Contents: Section 1 — Introduction 1-2 Chapter 1 —&#8230; C TxDOT CONT TYPICAL TRANSVERSE SECTION SECTION A-A 2" AND MORE OF HAUNCH LESS THAN 2" OF HAUNCH PARTIAL PLAN FOR SLABS WITHOUT BREAKBACK PARTIAL PLAN FOR SLABS WITH BREAKBACK BARS OA (#5) BARS AA (#5) Designed according to AASHTO LRFD Bridge Design Specifications. Design beams so that they meet all requirements for all phases of When calculating haunch for the beam along the phase line, use the dead load deflection from the initial slab weight. At this time, three Excel-based tools are available, one for Two-Lane Rural, another for Multi-Lane Rural facilities, and the third for Urban Intersections. Consequently, haunches enhance the economical design of rafters of portal frames, by reducing the depth of the section required. Do not include haunch concrete placed on top of the girder when determining section properties. TxDOT TxDOT TxDOT HIGHWAY SHEET NO. For instance, TxDOT rounds the computed full-precision required value up to the nearest 1/4 inch, while WSDOT rounds to the nearest 1/4 inch. However, this is only for reporting purposes. TxDOT The steps to design a beam in PGSuper can be simplified to . If Prestressed Concrete Panels are used as a forming option, find this haunch reinforcement on • The finished product is a MicroStation design file which may be modified the same as any other design file. UnsymmetricUnsymmetric I wanted to bring to your attention a specific case where PGSuper outputs a wrong value for the “Y” component of the section depths. 33 . e. ) Slab Overhang Thickness 4 ~ K (top) 4 ~ K (top) with breakbacks. Figure 1: Project Development Process Phases . The “Slab Offset” is the slab plus haunch value. Files are maintained by the TxDOT division or district identified in the plan title block. 2". The research will include full-scale laboratory PGSuper has the ability to model geometrically complex bridges, such as, flared or tapered beams, varying slab widths, and sidewalks. The section depth components for a specific girder can be viewed in PGSuper’s TxDOT Girder Schedule Report. Haunch face of inverted-T stem (See Span Details) L interior bent or Face of abut bkwl, C Bars D 1'-0" along 4'-0" 3 3 3 Designed according to AASHTO LRFD Bridge Design Specifications. modify the default settings, EVER! haunch is not inline with TxDOT guidelines. The haunch fill material needs to be sufficiently fluid to flow through the shear pockets in the precast panels into the haunch area yet should provide good dimensional stability and I Girders, Recommended Span Lengths for LRFD Beam Type Beam Depth 1Approx Structure Depth Use TX28 28 in. Before we proceed with entering data into STLBRIDGE, three Haunch dimensions around 4” TxDOT Standard Prestressed Bridge Products Author: John M. xlsx spreadsheet lookup tool or from existing functionality in design software like GEOPAK, they should still evaluate the new NOAA rainfall changes for their project area and, if there are increases for the design frequency, estimate an appropriate level of freeboard The user will need to enter the haunch into OBM either by Start and End Haunch or Min Haunch and Camber. Open a Template for the appropriate beam type. 9. pipe (haunch zone) and above the center line of the pipe (initial backfill). 6. Section 2: Table 1-1 was updated to include Bridge Rail requirements. 1 The presence of the haunch data is necessary but not sufficient for this to occur . 0 inches. Input Span Length and Skew. There are different ways to assume the slab haunch for purposes of estimating dead load. The purpose of the QAP is to provide statewide consistency and a programmatic approach to Quality Assurance (QA) for design-build projects where the design -build contractor’s (DB Contractor’s) test Refer to Chapter 5 of the WSDOT Bridge Design Manual for a further discussion of camber. 79= ft haunch 2= in slab 8= in TXDOT Bridge Design Manual, therefore, six crossframes will be provided spaced at 28. 7. Use care to ensure proper backfill under the pipe, in the haunch zone. , “Classification of Concrete Mix Designs,” unless otherwise approved. TxDOT’s approach to selecting the design standard for a drainage facility is to use a reference table that specifies a range of design AEPs for different types of facilities. As4 may be lap spliced at any location or connected to As2 "B" (Sheet 1), As1 may be extended to the middle of either slab and lap spliced 7. pdf: 08/29/2013: TxDOT New Prestressed I-Beam Standard Drawings (English) memoi14e. 2 does not recognize this joint type]. The cross slope correction (CSC) is the distance from the bottom and haunch concrete when required, based on the profile grade, theoretical camber, and dead load deflection of the beams. These are reported in the TxDOT Summary and Girder Schedule The haunch dimensions should vary not more than 3/4 in. determine the engineering application for their design. Table of Contents Section I Girders, Recommended Span Lengths for LRFD Beam Type Beam Depth 1Approx Structure Depth Use TX28 28 in. 5 %âãÏÓ 791 0 obj > endobj 820 0 obj >/Filter/FlateDecode/ID[2DEB6231450D7B1CD4FC795A38670D4F>]/Index[791 50]/Info 790 0 R/Length 122/Prev 106712/Root 792 If a project is approved to use the older values from the EBDLKUP-2015v2. Can you incorporate a haunch over the beam and see the elevations? Yes, you can specify a minimum haunch, and OBM will model the varying haunch thickness over the beam and under the deck. The The “Slab Offset” is the slab plus haunch value. The load due to the haunch concrete can be modeled as a User Defined Load, as discussed in later TxDOT TxDOT JTR JMH HIGHWAY SHEET NO. 2 (*pre-2017: 5. Max. C TxDOT CONT TYPICAL TRANSVERSE SECTION SECTION A-A 2" AND MORE OF HAUNCH LESS THAN 2" OF HAUNCH PARTIAL PLAN FOR SLABS WITHOUT BREAKBACK PARTIAL PLAN FOR SLABS WITH BREAKBACK BARS OA (#5) BARS AA (#5) Designed according to AASHTO LRFD Bridge Design Specifications. A parametric study for AASHTO Type IV, Type C, and Texas U54 girders was The paper discusses the fabrication and design of precambered precast, prestressed concrete bridge girders, which are engineered with intentional vertical curvature to align with roadway profiles. Push-out Specimen Design. asp Designs the girders for flexure. 1 6 February, 2016 General Notation b w = Web width, or diameter of circular section d = Distance from extreme compression fiber to centroid of tension reinforcement, in inches E c = Modulus of elasticity of concrete in ksi or MPa E s = Modulus of elasticity of reinforcement in ksi or MPa The steps to design a beam in PGSuper can be simplified to 1. 330klf) 65% relative humidity 1/2" 270 ksi low-relaxation strand, unless noted otherwise f’ ci max = 6500 psi, f’ 5/31/2023, In this project, researchers will develop guidelines for analyzing and designing haunches having different heights and reinforcement detailing. ♦ Provide guidelines specific to TxDOT policies, details, and design assumptions. Another beam developed for rapid construction is the decked slab beam, shown in Figure 9. 18(58. Standard Division Prestressed Concrete Beam and Girder Design TxDOT’s policy is held firmly to a 6. 0 ft Measured from CL Bearing to CL Bearing Overall Beam Length = 121. Department of Transportation (TxDOT) projects to achieve optimal quality and value in steel bridges. Data and maps ; Reference maps; Traffic count maps; Official travel maps; Roadway inventory; One-stop demographic data analysis tool; Global Positioning System (GPS) Crash reports and records Section 6: Design Flood and Check Flood Standards. from the design dimensions. Spans should not exceed 80 ft. Embed Size (px): 92 Match case Approximate Structure depth = 54" beam + 8" slab + 2" haunch = 64" 10. Haunch should be set to zero at this point and the “Slab Offset” should match the “Gross Depth. 1. Shear forces and Bending moments due to Dead loads TxDOT’s Research and Implementation Programs are managed by the Research and Technology Implementation Division. Design of the girder haunch; TxDOT Alternate Girder design When calculating haunch for the beam along the phase line, use the dead load deflection from the initial slab weight. Spaced at 8" Max = "A" No warranty of any kind is made by TxDOT for any purpose whatsoever. 100. Push-out Test Setup. 50 in Age of Concrete at Prestress Transfer, ti = 1 days Typical TxDOT Values: ti = 1 day Age of Concrete at Deck Placement, td = 90 days td = 120 days Final Age of Concrete, tf = 20,000 days tf = 2,000 days For RMA, toll and pass-through financed projects, preliminary design information must be sent to TxDOT for review and approval when the design is approximately 30 percent complete. 5/7. 2018 Fall Bridge Division Webinar September 13, 2018 Table of contents . TxDOT 2012 refers to the AASHTO LRFD Bridge Design Specification, Sixth Edition, 2012 with modifications Haunch: 2" T501 rail 8" deck design for 2" overlay roadway has future ADT of 2100 vehicles/day urban arterial Length 140. Uncoated ~ #4 = 1'-7" Epoxy Coated ~ #4 = 2' Cap and Column Design 85 to 140 Beam Cap Check Points 86 RC-Pier Input Screen Captures 87 to 108 Access RC-Pier through Leap Bridge 87 Geometric Input 88-94 Load Input 95-108 Typically the DC1 loads are underestimated because the haunch, intermediate diaphragm, pier diaphragm, and the slab thickening on the overhang are not included. Contents Pretensioned Concrete TxGirder Haunch Design Guide Appendix B, Pretensioned Concrete U Beam Design Guide . Other agencies may have similar requirements. Research Supervisor: Dr. 4. Phasing Considerations for Bridges TxDOT New MicroStation Plot Driver File for Bridge Design & Std Drawings: memoi43e. 422. The load due to the haunch concrete can be modeled as a User Defined Load, as discussed in later %PDF-1. 583 108. 2018 Fall Bridge Division Webinar September 13, 2018 AASHTO-LRFD DESIGN EXAMPLE HORIZONTALLY CURVED STEEL BOX GIRDER BRIDGE FINAL REPORT Prepared for National Cooperative Highway Research Program The width of the haunch is assumed to be 20. The eaves haunch is created by adding a tapered length cut from a rolled section, or fabricated from plate. Texas Manual on Uniform Traffic Control Devices (TMUTCD) Bridge Design Guide - Date post: 10-Oct-2019: Category: Documents: Upload: others View: 29 times: Download: 4 times: Download Report this document. (2010) 2" Haunch Span 2 112' Type TX54 Girders (0. In TxDOT’s experience, the initial effort to produce standardized bridge plans takes twenty outputs the member forces for use in either a working stress design or a load factor design in TxDOT Concrete Box Culvert Analysis Program (CULV5) Page 8 of 10 . Will work for many custom design cases, good start point for more complex cases. 0 ksi maximum allowable concrete strength (f’ci) at haunch for the beam along the phase line, use the dead ÐÏ à¡± á> þÿ þÿÿÿcäe æ g è i This page provides an overview of the repair procedures for use on new and existing concrete members cast for TxDOT. Section 2: Bicycle facility Design Exception and Design Waiver guidance has been updated and provided in Tables 1-3, and 1-8. How do we Load Rate a bridge? 9 Use the BDM – LRFD Table 5-1 in lieu of MBE Table 6A. pdf: Haunch: 2" T501 rail 8" deck design for 2" overlay roadway has future ADT of 2100 vehicles/day urban arterial Length 140. C TxDOT CONT DATE: FILE: Min " 2 1 Min edge as shown strip at flange Beam Bar R(#4) Haunch Roadway slope 5 (Typ) Bars UP Panel REINFORCING DETAIL HAUNCH Beam Bar R(#4) (Typ) Panel Panels not Designed according to AASHTO LRFD Bridge Design Epoxy Coated ~ #4 = 2'-5" Uncoated ~ #4 = 1'-7" OBD serves as the workflow manager for Design and Analysis, and Bridge Models created with OBM (BIM Workflow) . Other types of lighting systems (such as for rest areas, parking lots, central business districts outputs the member forces for use in either a working stress design or a load factor design in TxDOT Concrete Box Culvert Analysis Program (CULV5) Page 8 of 10 . Design of the girder haunch; TxDOT Alternate Girder design TxDOT TxDOT HIGHWAY SHEET NO. pdf: 10/26/2004: Revised Armor Joint Standard Drawing (English) memor09e. When the design option is enabled the Girder Designer will attempt to find the optimal slab offset for the selected girder(s). 2018 Fall Bridge Division Webinar September 13, 2018 . AASHTO Type IV - LRFD Specifications Detailed Design Examples - 7 Table A. serves as director. Parapets are each assumed to weigh 495 plf. 4/7. From this page you can search for a word or phrase in all manuals. Over time, this efficiency reaps significant cost savings associated with bridge design. pdf: 08/30/2013: New Precast Inlets and Manholes Bridge Standard Drawings: memoi42e. Todd Helwig proper backfill under the pipe, in the haunch zone. Study our various maps, dashboards, portals, and statistics. 2. Carting of Concrete Cart, wheel, or pump concrete over completed slabs after the completed concrete has attained a compressive strength of 3,000 psi. Provide guidelines specific to TxDOT policies, details, and In this project, researchers will develop guidelines for analyzing and designing haunches having different heights and reinforcement detailing. asp Anchor: #i1006868 Section 2: Concrete Mix Design Anchor: #i1013900 2. Section 15: Segmental – Use the FIB Model Code for Concrete Structures (CEB 2010), or the specified in the TxDOT Bridge Design Manual Chapter 3, Section 17, for Extreme Event III only 1. exceeds 3 1 in all areas where measured haunch Space Bars U with Girder Bars R Note: "C" = Girder top flange length "B" = Girder top flange width "A" = Haunch at brg Section 2: Design Exception, Design Waiver and other associated criteria information has been updated to a tabularized form for ease of use and reference. Research Performed by: Center for Transportation Research . Chapter 5 – Reinforced Concrete Information. Uncoated ~ #4 = 1'-7" Provide bar laps, where This tutorial provides a basic introduction to a girder haunch for both prestressed concrete girders and steel girders. K(#4) on slabs M(#4) G(#4) 2" H(#4) J(#4) " 4 1 1 Designed according to AASHTO LRFD Bridge Design Specifications. We also develop design policies and roadside safety criteria, o All Prestressed Concrete I-Girder Spans (SIG)– Increased haunch depth IGD – In order to improve performance when impacted, added Bars C and CH over full length when VC (bridge vertical clearance) is less than or equal to 20’-0”. are posted on the TxDOT web site and are available for immediate use. bedding and the pipe in the haunch zone. Eskridge, PE, Texas Department of Transportation, and design for the next round of pre-topped U-beam bridges is already underway. Do Taya. Manuals Home | TxDOT Home. Compact Ensure backfill completely fills the void between the S l a b H a u n c h B e a m X X 1 2 1 1 2 B r g b u i l d u p B r g p a d = Slab + Haunch + Beam + Brg pad + Brg buildup X = Height of backwall (with no approach slab) = Deduct thickness of approach slab (1'-1" typical) from X BARS UP Girder Bar R H a u n c h Roadway slope 3 " C l c o v Bars UP (Typ) Panel 4" 4" o v e r 3 ½ " 8 ½ " 3 ¾" Bars UP are normally #4 bars. Updates to this guide are summarized in the Prestressed Concrete I-Beam and TxGirder Haunch Design Guide Components of the Haunch Camber: Camber is the upward deflection in the beam after release of the prestressing strands Updated standard designs to reflect the single-tiered (harped) design approach for prestressed I-Girders with 0. VERSION 2. on the girder side faces indicating roadway drainage passing through the haunch concrete, panels likely should be replaced with a full depth repair. 6 • Updated Bar Labels for new Inverted Tee detailing shown in Appendix A • Development Length notes have been updated for compliance with AASHTO LRFD Bridge Design Specifications, 9. 150) = 3. Good quality printed versions of the files may be used in plan sets without being signed and sealed by a licensed engineer. , haunch thickness of 4 in. to avoid unequal pressure. DES Workshop: TxDOT Comprehensive Accessibility Program (TCAP) Introduction and Hands-on Workshop (Frisco 9) Becky Byford, TxDOT Design Division Jamie Godwin, TxDOT Design Division Bill Macke, If all cambers and deflections occur as predicted during design, the haunch depth at the point of least haunch depth will be exactly equal to the fillet dimension. Payment. C TxDOT REVISIONS DN: CK: DW: CK: CONT SECT JOB HIGHWAY DIST COUNTY SHEET NO. The design is for a TxDOT bridge, but the discussion is applicable to all users. th. 851k/ ft) 6 Girders Spaced @ 8. The Texas Department of Transportation (TxDOT) is introducing an updated Form 2534, Minor Traffic Engineering Studies, and Traffic Impact Analysis (TIA) guidance for use in the driveway permitting process. The division also develops policies, design standards, manuals, and guidelines for the design, maintenance, and construction of a Comprehensive Design Example for Prestressed Concrete (PSC) Girder Superstructure Bridge Design Step 7 Design of Substructure Design Step 7. Haunches in TxDOT Beam and Girder Bridges Background Deck haunches are commonly required with both prestressed concrete (PSC) and structural steel girder bridges primarily to Schematics and design guide for prestressed Concrete I-Beam and TxGirder Haunch, including illustrations of different types of stress. TxDOT August 2018. and design indicated on the plans or as furnished by the Engineer. The Texas Department of Transportation (TxDOT) is currently designing highway bridge structures using the American Association of State Highway and Transportation Officials design, and to recommend guidelines to assist TxDOT in implementing the LRFD Specifications. C TxDOT August 2017 CONT PRECAST CONCRETE PANELS FOR OVERHANGS rail anchorage. The project is designed and then put up for bid by contractors. Mary Navarrete-Rodriguez, a TxDOT resource support specialist, also shared her experience in A warning will be added to the slab haunch specification check report when the variation in haunch depth along the precast element exceeds 2 inches. A full torsional design following the guidelines of the ACI 318-19 building code is carried out and the TxDOT uses aesthetic lighting to highlight roadway structures, walls, and landscaping. In 1994, the American Association of And the encounters didn’t stop there. Use this page to access the TxDOT online manuals. E. For example, TxDOT currently uses 80% of the deflection due to the slab weight, so for this case we can write: Camber deflection multiplier constants are defined for each girder type on the Haunch and The Odessa District plans, designs, builds, operates and maintains the state transportation system in the following counties: Andrews, Crane, Ector, Loving, Martin Design Features AASHTO 1965 Spec DesignAASHTO 1965 Spec Design Large girder spacingLarge girder spacing FloorbeamFloorbeam--girder connections field weldedgirder connections field welded PT Deck on top of PT Deck on top of floorbeamsfloorbeams Girder skew, curve, flare, haunch, etc. Depending on BRIDGE DESIGN MANUAL TXDOT >> DOWNLOAD BRIDGE DESIGN MANUAL TXDOT >> READ ONLINE bridge deck haunch txdot haunch calculation txdot culvert design softwaretxdot bridge unit costs txdot abutment design example bridge link txdot txdot bent cap design example txdot design manual. TxDOT is not specifying a design software, just OBM for 2022 TxDOT Bridge Design Webinar May 17, 2022. Holt Created Date: 6/28/2011 2:08:26 PM The Texas Department of Transportation FTP server provides access to the bridge detailing guide in PDF format. exceeds 3 1 in all areas where measured haunch Space Bars U with Girder Bars R Note: "C" = Girder top flange length "B" = Girder top flange width "A" = Haunch at brg The TxDOT-customized version of BridgeLink is versatile, user friendly, Windows-based software for the design, analysis, and load rating of multi-span precast-prestressed concrete bridge beams/girders in accordance with the AASHTO LRFD Bridge Design Specifications (thru the 8th Edition, 2017) and TxDOT design policies and guidelines. AASHTO-LRFD DESIGN EXAMPLE HORIZONTALLY CURVED STEEL BOX GIRDER BRIDGE FINAL REPORT Prepared for National Cooperative Highway Research Program The width of the haunch is assumed to be 20. The 4 TR 77 Design and Instal la t ion of Flexib e condui s, Plast c Pipe, USDA-NRCS, Aug 1990 5 Hancor Pipe, reference information is available at – http: /www. The following sections cover some of these The report describes bridges categorized by location either on or off the state highway system and describes the condition of Texas bridges in terms of sufficiency: A list of publications authored Forms and guides for the Design Division. Local Agency Ordinances and Requirements; ♦ 7. 110 klf composite dead load (1/3rd of T501 rail ~ 0. 38 in. In 2019, a now-retired TxDOT employee told about doors slamming in an empty Greer bathroom for a Facebook video posted the day before Halloween. It includes legal authority and references. , and deck thickness of 8 in. Is the rainfall storm data based on partial or annual duration? The rainfall is based on Atlas 14 partial duration intensities. It is maintained by the Texas Steel Quality Council, which is a joint ow ner-industry forum, comprised of the following: • TxDOT design, fabrication, and erecti on engineers; TxDOT inspectors • FHWA bridge engineers • Academics Section 2: Design Exception, Design Waiver and other associated criteria information has been updated to a tabularized form for ease of use and reference. OBD allows the user to create Standalone files in each of the applications Starting June 1st, 2022, the roadway engineers working for TxDOT started using OpenRoads Designer (ORD). hancor. Design Span, L = 120. Design surveys are an essential part of the The slab haunch load and the slab haunch geometry are definitely a chicken-egg problem. ("A") for the haunch check. Maintain curing during these TxDOT's traditional method of building transportation projects is known as design-bid-build. xml ¢ ( Ä—ÁrÚ0 †ï é;xtíØBi›¦ L Izl3“ô „¼Ø*²¤‘ oßµ ¤M ت 0 »ßîJúgw|½¬U²ç¥Ñ9aÙˆ Fixes rounding problems with TxDOT X, Y, and Z dimensions in the TxDOT Haunch Summary report (M1123) Fixes program termination problem when opening the Girder View for girders with cantilevered ends (M1147) Haunch design parameters are now girder dependent (in girder library rather than project criteria). [TxDOT: Joints meeting the requirements of ASTM D3212] 29 Maintain trench shoring system above pipe haunch zone to not disturb during shoring removal. 1 - Integral Abutment Design girder height of 72 in. C TxDOT August 2017 CONT SHEET 1 OF 2 3" 3" Expansion joint in slab BARS U (#4) minus 4" width Top flange 4" 4" Haunch U HAUNCH REINFORCING DETAIL " 2 1 over 3 Girder Bar R Girder TREATMENT AT GIRDER END FOR SKEWED SPANS material may be used as a filler. Due to unusual geometric situations or design error, beam and girder bridges sometimes have haunches of significant height such that the constructability and horizontal shear transfer come ♦ Serve as a resource for engineers designing bridges for TxDOT. Further for aesthetic lighting are detailed in the Landscape and Aesthetics Design Manual, Chapter 4, Section 9. TxDOT assumes no responsibility for the conversion of this standard to other formats or for incorrect If all cambers and deflections occur as predicted during design, the haunch depth at the point of least haunch depth will be exactly equal to the fillet dimension. 90 All load effects during an assumed fracture event due to both permanent and assumed transient loads shall be amplified by a factor of 1. gov . Use the Design Sketch Checklists provided in the Appendix, Figure 4 for direction on the information needed on the design sketches. Actuator Lateral Support. • English and metric capability. Design bridge than update roadway drawing (grading and etc. nwhc qmbvg gbnpd jyuexi fjcdne necld ppytpnvt pfbodm tgaqc sdpfj