Aashto 17th Edition

[Amalia Antill]

This fully revised 17th edition was written to provide a concise, current reference on concrete, including the many developments that occurred since the last edition was published in 2016. The text is backed by over 100 years of research by the Portland Cement Association and other industry groups. It reflects the latest guidance on standards, specifications, and test methods of ASTM International (ASTM), the American Association of State Highway and Transportation Officials (AASHTO), and the American Concrete Institute (ACI).

The 17th edition includes an in-depth restructuring of the existing content, presenting a 40% increase in new information over the prior edition within the previous chapters. This edition also has added two new chapters on imperfections in concrete, and innovations in concrete.

Preface and Acknowledgements

Foreword

Chapter 1 Introduction to Concrete

Chapter 2 Portland, Blended and Other Hydraulic Cement

Chapter 3 Supplementary Cementitious Materials

Chapter 4 Mixing Water for Concrete

Chapter 5 Aggregates for Concrete

Chapter 6 Chemical Admixtures for Concrete

Chapter 7 Fibers

Chapter 8 Reinforcement

Chapter 9 Properties of Concrete

Chapter 10 Volume Changes of Concrete

Chapter 11 Durability

Chapter 12 Sustainability

Chapter 13 Specifying, Designing and Proportioning Concrete Mixtures

Chapter 14 Batching, Mixing, Transporting, and Handling Concrete

Chapter 15 Placing and Finishing Concrete

Chapter 16 Imperfections in Concrete

Chapter 17 Curing Concrete

Chapter 18 Hot Weather Concreting

Chapter 19 Cold Weather Concreting

Chapter 20 Test Methods

Chapter 21 Paving

Chapter 22 Structures

Chapter 23 High-Performance Concrete

Chapter 24 Innovations in Concrete Technology

Appendix

Index

MDX Software Curved & Straight Steel Bridge Design & Rating is currently in use by many ENR Top 500 design firms and state DOTs to design and rate steel girder bridges for compliance with AASHTO Specifications: the 17th Edition of the AASHTO Standard Specification for Allowable Stress Design (ASD) and Load Factor Design (LFD), and the 6th Edition LRFD Bridge Design Specifications, including interims. (The 7th Edition of LRFD version is in development. Portions of the 7th edition are currently available as options. Contact Tech Support for more info.)

I am trying to design a pedestrian bridge on which I have "H10" AASHTO loading. I tried to create H10 vehicle in Permit vehicles but when I analyse for live loading, I have to include at least 1 Standard vehicle which I don't want. Is there a way to analyse live loading envelop without a standard vehicle or any other way to design loading on the pedestrian bridge.

I'm not really an expert on AASHTO loading so I'm not sure how helpful I can be. If I remember correctly the "H" type loading (H10, H15, H20 etc...) was the loading in the previous code to LRFD (ie 17th edition AASHTO) I assume that the H10 (which I thought had been removed from the code) that you are trying to apply to a pedestrian bridge is Accidental/ maintenance loading in the LRFD code but as I don't have a copy of this document it is just an assumption as I can't check it out.

I think that the load optimisation using the AASHTO LRFD 7 code doe not have this "H" loading but, as you say, a non standard vehicle can be applied as a user defined permit vehicle - but this will always be applied in accordance with the general rules which will combine it with other vehicles.

If the code of practice is changed to "AASHTO 17th edition" then there is more scope to apply a single H10 vehicle. However, any results produced and subsequent design within the software would relate to the older code of practice.

It would be useful, for the developers of the software, to know if this is a common application and what the basic loading criteria is so that these situations may be added to the development wish list.

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