Design of slab bridge pdf

Planning and preliminary design of slab bridge ref. Pdf on apr 10, 2017, nabeel albayati and others published structural bridge design chapter 5example2 of reinforce concrete bridge 2017 find, read and cite all the research you need on. The manual is based on the aashto lrfd bridge design specifications. Ice manual of bridge engineering ice virtual library. Bridge standard detail sheets change transmittal pdf summary of revisions pdf support. Tutorials on bridge design and assessment with examples. There was a fashion for very shallow bridges in the 1960s and 1970s as they were considered to look more elegant. At the same time as wood beam bridges and wood frame bridges, stone slab bridges were also used widely. If the outtoout width of a slab bridge exceeds 45 ft. Pci has developed preliminary design charts in accordance with the aashto. Reinforced concrete slab design using the empirical method. In addition to general design guidance and information on detailing practices, this section contains three design examples.

In situations where the bridge skew exceeds 30 degrees, consult the bearing and expansion joint specialist and the bridge design. Right click the excel icon for the appropriate jurisdiction. The effective width equations in the aashto standard. A detailed explanation will be given of the checksto be carried out, the aspects to be considered in the design and the construction procedures and sequences of a posttensioned slab.

Castinplace deck slab design for positive moment regions. Flat slab analysis and design pdf flat slab design pdf 1. Slab design reading assignment chapter 9 of text and, chapter of aci31802 introduction aci318 code provides two design procedures for slab systems. Bridge design guide txdot january 2020 feedback for txdot policy on designing bridges, please refer to the txdot bridge design manual lrfd. Reinforced slab bridge designaashto allowable stress design method. Slab and girder bridges are used when the economical span limit of solid slab bridges is exceeded. Reinforced concrete slab design using the empirical method bridgesight solutions for the aashto lrfd bridge design specifications bridgesight software tm creators of effective and reliable solutions for the worlds bridge engineers.

Ultrahigh performance fiber reinforced concrete elements pdf. Design problem design a slab bridge to meet the following requirements bridge clear span 6m bearing width of slab 400 mm carriage way two lane footpath on either side of bridge wearing coat asphalt concrete select type of slab, railing, wearing coat and materials require. V slab variable depth slab bridge design is a structural analysis and design software package developed for reinforced concrete flat or haunched slab bridges under the american association of state highway and transportation officials aashto lrfd bridge design specifications, 8th edition. This is economic because the dead weight of the slab, although an insignificant part of the load on the slab, is significant to the global design of the bridge. The original bridge and structures design manual was created through the publicprivate partnership of the georgia department of transportation and the consulting engineering companies of georgia. Specifications and aashto lrfd bridge design specifications. Simple span reinforced concrete slab bridge rating example. Load and resistance factor design lrfd for highway bridge.

Design and study on behaviour of skew slab bridges with. Reinforced slab bridge designaashto allowable stress design. Reinforced slab bridges used for short spans, a solid reinforced concrete slab, generally cast insitu rather than precast, is the simplest design to about 25m span, such voided slabs are more economical than prestressed slabs. The selection and proper application of the component design and any modifications shown. The basic bridge geometry can be found on the bridge layout and 75 slab span details see the appendix, pages 21 and 22. Reinforced concrete slab design guidelines a effective span of slab. Master of science and hereby certify that, in their opinion, it is worthy of acceptance. A detailed study on variation of bending moments in simply supported skew slab bridges with various skew angles is given in this project using structural analysis software staad pro, and analysis is as per provisions of indian codes irc 6.

Design step 4 design of deck prestressed concrete bridge design example task order dtfh6102t63032 43 for this example, a slab thickness of 8 in. Slab bridges, due to camber required to address future creep. The execution of the design will be explained with reference. Where applicable, you can see countryspecific product information, offers, and. It is a supplement to the latest edition of aashto lrfd bridge design specifications, which designers should be adhere to unless directed otherwise by this document. Li university of michigan, ann arbor, michigan, usa abstract the poor durability of concrete bridges throughout the us is an increasingly large concern for highway transportation authorities. The stone slab bridge a design and technology site. Structures design office lrfd design examples files pdfs.

The washington state department of transportation wsdot makes these documents available on an as is basis. Reinforced and prestressed concrete are used extensively in bridge projects. Deck design follows the nmdot standard deck slab detail in chapter 4 of the nmdot bridge procedures and design guide, hereinafter referred to as design guide. This manual documents policy on bridge design in texas. Design and field demonstration of ecc link slabs for jointless bridge decks michael lepech and victor c. Solid slab bridges are horizontal beams supported at each. Flat slab analysis, design and detailing pdf civil engineering. For the deck types discussed herein, a brief description of the particular deck type is given, in addition to general design and detail considerations.

Here analysis of voided deck slab and cellular deck slab. Double tee bridge beams 157k, pdf next bridge beams 104k, pdf pci zone 6 curved spliced girders 1. Refer to the latest edition of ladotd bridge design manual 4th. The details may be incorporated into either the district or the structure plans. Standard bridge drawings autocad file types open best by rightclicking on the link and doing a save target as and saving to your computer or network before opening. Simple span reinforced concrete slab bridge rating example vdot. Features for creating design of deck slab bridge pdf. Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway slabs as per is following are the rcc slab design and detailing guidelines. Flat slab analysis, design and detailing pdf civil.

Please direct any questions on the content of this document to the bridge design section director, bridge division, texas department of transportation. Two design examples of a simply supported slab bridge and a twospan box girder bridge are also presented. The integral wearing surface is considered in the weight calculations. For simply supported spans, this limit is generally found to be nearly 10 metres and for continuous or balanced cantilever type. A decrease in moments from solid to voided slabs is about 11%, 7% and 5. Assign depth of slab using deflection control criteria and sizes of carriageway, footpathkerb, wearing coat and railing. If this box is not checked, the rating will use section properties computed. Bridge approach slab analysis and design incorporating elastic soil support presented by. Girder analysis and design is performed using the computer program conspan, version 09. Reinforced concrete bridges theory and design of bridges. The steel reinforcement in the concrete slab was improperly designed, resulting in. Opens the bridgeware association window allowing you to specify this current bridge as a virtis, opis or virtisopis bridge and also to link this current bridge to a bridge in the pontis database if pontis is installed.

After reading this article you will learn about the design of slab and girder bridges. Irc 5 select type of slab, railing, wearing coat and materials require. Check this box if the structural slab thickness should be used to compute section properties for rating. This help file describes input and analysis features of slab bridge designer 2.

Design of reinforced concrete bridges department of civil. Structural details of slab culverts 3 for spans less than 3. The design of bridge should follow the standard design practices mentioned in the irc and. Department of transportation federal high way administration bridge deck design.

Semiintegral construction may be used in lieu of expansion joints for single span bridges under 300 feet with the approval of the bridge design engineer. It assists texas bridge designers in applying provisions documented in the aashto lrfd bridge design specifications, 2017, 8th edition, which designers should adhere to unless directed otherwise by this document. Lrfd slab bridge design procedure, equations, and outline. Longitudinal steel should be detailed in a 2bar alternating pattern, with one of the bars continuous through the slab. Select the straight bar type even if the bar has hooks at the end.

Structural bridge design bridge analysis software autodesk. Reinforced concrete slab bridges design considerations haunched slabs straight haunches preferred in lieu of parabolic depth at pier should be 2 2. Refer to the latest edition of ladotd bridge design manual 4th english edition for. View example in pdf format design example 1 download example as a mathcad workbook zip castinplace flat slab bridge design. Lrfd castinplace cip slab span design example county. Open the excel file and the user can locate the proper. Assign depth of slab using deflection control criteria and sizes. Continuous span reinforced concrete slab bridge vdot. These materials are originally located at different websites. With decreasing budget allocations for infrastructure.

A comparative design of reinforced concrete solid slab bridge for. Wsdot policy is to design using gross section properties bdm 5. A civil engineer must know all the aspects regarding the flat floor system. A basic introduction to the design codes and methods of anlysis.

Key words steel bridge, deck design, concrete deck, precast concrete deck, wood deck, metal grid deck, orthotropic deck 18. Lrfd design examples federal highway administration. Your project should complement the beauty of your home, and not be a foreign element. Pdf 3 analysis and design of deck slab satya narayana. Only the design of slab bridge will be used for illustration. Bridge design to eurocodes worked examples worked examples presented at the workshop bridge design to eurocodes, vienna, 46 october 2010. Behavior and design of link slabs for jointless bridge decks. I using refined estimate of prestress losses bdm 5. Slab frame bridge, structural design, cost optimization, optimization of environmental impact, life.

Problem of design of deck slab bridge part 12 youtube. A civil engineer should study these lectures and materials for structural engineering acumen. Design of bridge slab spreadsheet reinforced slab bridges used for short spans, a solid reinforced concrete slab, generally cast insitu rather than precast, is the simplest design to about 25m span, such voided slabs are more economical than prestressed slabs. Dec 02, 2017 i suggest you to listen to the video and make notes of your own, that makes you confident if you still want to download it, its not free please click th. All warranties and representations of any kind with regard to said documents are disclaimed, including the implied warranties of merchantability and fitness for a particular use.

The deck may consist of 3 girders spaced at 2, 45 m. Flat slab analysis, design and detailing pdf flat slab system is an important division of concrete floor system. This manual documents policy on lrfd bridge design in louisiana. The minimum spacing of reinforcing bars should preferably be 6 in. View example in pdf format design example 2 download example as a mathcad workbook zip adhesive anchor examples. Reinforced concrete slab design and detailing guide is456. If this box is not checked, the rating will use section properties computed from the total deck thickness. Bridge design details 116, use of bridge standard details xs. Design of bridge slab spreadsheet engineering books. Wsdot bridge design engineers with a guide to the design criteria, analysis.

Sep 09, 2018 features for creating design of deck slab bridge pdf. Deck is 46 ft wide with a 15 degree skew roadway is 44 ft wide type t501 rail 0. A debonded zone under the link slab equal to 5% of the two adjacent girder spans to prevent stress concentrations was suggested 9. Deck is 46 ft wide with a 15 degree skew roadway is 44 ft wide.

E dge beam design is required for bridges with open joints and possibly at stage construction lines. They are still used today as they are very strong especially if used to cross small gaps. Purpose of bridgepurpose of bridge a bridge is a structure providing passagea bridge is a structure providing passage over an obstacle without closing the wayover an obstacle without closing the way beneath. Example on design of slab bridge design data and specifications superstructure consists of 10m slab, 36m box girder and 10m tgirder all simply supported. This paper presents the results of a test program to investigate the behavior of jointless bridge deck, and proposes a simple design method for the link slab. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Structural bridge design bridge analysis software integrates loading, analysis, and code checking aashto lfrd, eurocodes, and more throughout the project. Using data from the portland cement association engineering bulletin 232, aashto lrfd design of castinplace concrete bridges this example demonstrates how slab bridge designer 2.