Hello, everyone, and good afternoon to the East Coasters, and I guess good morning to the West Coast. I'd like to welcome you guys to the Post-Tensioning Institute's monthly webinar that's sponsored by PTI's Education Committee. My name is Kyle Boyd. I'm a structural engineer, and I volunteer with the Post-Tensioning Institute, and I'm chair of the Education Committee, which is that committee that I just mentioned that sponsors this webinar. I'll be moderating today's session, and for 2024 and the foreseeable future, what we're going to be doing is we're going to be providing this monthly webinar free of charge at the same time every month, and that time is how we're doing it today. So it's going to be the second Wednesday of every month, and it's going to be at that 1 p.m. Eastern slash 10 a.m. Pacific time, and you guys can do the math for everybody in between there. So we have a broad range of topics to go over throughout the year. The first quarter is very strong on building design items, but then we're going to be moving into other topics within PT such as rock and soil repair, some of those others, and we're going to try and mix it up throughout the year. We do plan on continuing this past 2024, and right now we're just kind of planning out, and we are secured to that first quarter. At the end of today's presentation, we'll go over what are some of the upcoming webinars and how they kind of tie into it. So for today's topic, as you can see on the screen, it's an introduction to the seventh edition of the post-tensioning manual, and for us at PTI, this is a pretty major milestone as the last edition, the sixth edition, was released back in about 2006, as you'll see in today's presentation, and I remember buying that not too long after it was released, and somehow in my brain, that was only about six years ago, and this morning I was doing the math and realized that was actually 18 years ago almost, and I was put back in my seat a little bit. I was like, wow, welcome to 2024, I guess. So before I introduce our speaker, there's a few generic items that we want to go over with you guys. The first is continuing education credits. So we are teamed up with RCEP, so this isn't AIA, it's not one of the other ones, it's RCEP. It's the same group that we use for continuing education, and at the completion of today's webinar, we'll be sending out, you know, a little ways after the webinar today, we'll be sending out that certificate for the continuing education credit on there. We will be using RCEP throughout the rest of the year as well. Copyright stuff, we always have to put this in, it's the generic copywriting's no-no, thou shalt not do it, we've all heard this a million times before on there. And so we can dive into kind of some of the protocols that we're going to be following for the webinar today. All the attendees today, you guys are all muted with cameras turned off. If you do have questions, we'd like you guys to ask them through the Q&A at the bottom there, and not through the chat. We'll do our best to answer all the questions at the end of the meeting. We've allocated at least 10 minutes at the end. If those don't get answered, we'll tell you guys another route to get ahold of us for questions there. As far as getting that continuing education credit, you must be on for the entire webinar to get it. That's how it works. If for whatever reason you do have to drop for a meeting, phone call, anything important beyond this, we are going to record this and then we're going to upload it to our website and you'll be able to go onto the website and actually re-watch it, take a little quiz and get the credit as well. We do have a limited number of seats for this webinar, it's a pretty large number actually, and we're pleasantly surprised to see that filled up quickly. There were some people that were not able to get in just because we reached that very large threshold, the number of people that we could get in here. For any individuals and your colleagues that may not have been able to register, we encourage them to go online and once again, they can watch this online, take that exam, the little quiz at the end, get the credit as well. We'll be doing that for all future ones in case you have a conflict in there. That being said, we also encourage you when you see the emails come out in the future for you guys to try and register sooner rather than later on there. With that, we're going to go ahead and introduce our speaker, Mr. Tim Crystal. Many of you guys on here know him, so no introduction needed for many that are here. He's kind of known for his trademark deep soothing voice that you hear when he presents in different settings within the Post-Tensioning Institute. Tim's roots are from Purdue with a degree in engineering, a civil degree with a structural emphasis. He spent over 34 years in our AEC industry, managing, directing, designing, and marketing. Now he is the executive vice president for the Post-Tensioning Institute, so really Tim's full-time job and his full-time efforts are towards promoting the PT industry. Part of promoting that PT industry has really been a focus on getting this new seventh edition published and out the door, and Tim's really been one of the main individuals spearheading that. He is obviously the most qualified person to talk about the manual today. With that, Tim, you can go ahead and take her away. All right. Thank you very much, Kyle. I appreciate it, and again, appreciate your leadership on the education committee. That's certainly been the impetus behind putting together this webinar's program. The Post-Tensioning Institute is really interested in expanding our educational opportunities, expanding our reach to the members of the industry and PTI members as well. We want to provide educational opportunities through different means, and we wanted to definitely get this program underway, so appreciate Kyle, again, spearheading that with the education committee. We're excited to kick it off here in 2024 with this first one dealing with the Post-Tensioning Manual, which, again, like Kyle said, it's our iconic publication that comes from PTI. Most people kind of know that amongst all the things we produce, they know the PT Manual is a significant document we provide, and it's been quite a while since the sixth edition, so we're internally and externally celebrating the fact that we have come up with the seventh edition and provided that now to the outside world. This presentation today is going to kind of outline several things about the Manual, introduce it to those who are familiar with it, some of the changes, and those who are not maybe familiar with it as much, introduce how the Manual can serve you as a tool and help you deal with post-tensioning in a wide variety of ways. So today I'm going to talk about the history of the Manual a little bit. I'm going to update some of the highlights and talk about acknowledgments of those critical people that have been involved in this project all this time. I'll then provide kind of a chapter-by-chapter overview of all the different elements of the Manual, talking about what they cover, kind of their purpose, and then delve into the appendices as well. And as Kyle mentioned, we'll have time at the end to take questions, which we would, again, request that you submit those questions through the Q&A icon on Zoom webinars. So as you see here, this image of the cover, for those who've seen the Manual in the past, it's a lot more glamorous than the ones in the past have been, and I'll get that, I'll show that to you here in a second when we talk about the history. So the learning objectives for this webinar really focus on, again, allowing you to try and understand how to use the Manual as a technical information resource guide. This is a broad-based amount of information, and we want to kind of guide you through how that can be a tool for you to use. We want you to be able to understand what updates and additions have occurred since the 6th edition, because there are quite a few things in there to highlight. And for those who have been using the 6th edition for quite some time, I want to be able to, again, spotlight what's different between the 7th and the 6th. We want to also let you understand, too, the specific industry segment elements, where they're located in the Manual, where you can go find those. For example, if you're trying to find rock and soil anchors or slab-on-ground or repair or something like that, give you a better sense of navigating where to find that information. And then also understand how the PT Manual actually also kind of navigates you to other Post-Tensioning Institute publications and other external references on a variety of different topics. So we'll cover all that as your learning objectives and try and hopefully, as you end this webinar and walk away, hopefully you've gained that knowledge. And when you acquire your copy of the Manual, you'll be able to use it to its fullest. So again, the history of the PT Manual, it goes way back to 1972. So it's actually a point in time when the Post-Tensioning Manual actually came out of an element within the PCI organization, the Precast Pre-Stress Concrete organization. So that was kind of where it was at that time. And then ultimately, of course, in 1976, PTI was formed as its own trade association. So as you see here on the screen, a variety of different covers from 1972 to 76 and through the 80s, and then all the way up through the 90s to 2006, which is when the sixth edition that several of you might have in hand when that was published. So that's a long stretch of time. You can only imagine the variations and expansions and things that have happened in there since the early 70s. So those content updates and expansion have been ongoing and continuous, and certainly since 2006, there's been a great deal of things that have evolved since the early 2000s that we've now incorporated into the seventh edition. So we're going to talk again about those content updates and expansion. The creation of these different chapters, the updates, the new chapters, and things of that nature is brought about by both, in some cases, committees that have worked that out and also individual authors that have contributed either new content or updates in general. So we definitely thank all of those people that have contributed. In the front acknowledgement section of the manual, you'll see a lot of different names. There's a large array of individuals that have been deeply involved in putting together the PT manual. So we thank them certainly graciously for all their help. And then as well, the Technical Advisory Board, also known as TAB, the TAB committee oversees all technical committees and all design and materials committees at PTI. And TAB is really the shepherd of the PT manual. It comes out of the TAB group, and it was exhaustive battling, a considerable amount of time over many, many years to work through all the different chapters, reviews, secondary reviews, you know, balloting approvals, you know, all the different things we did to really refine the PT manual to the way it looks today. So again, a round of applause goes out to the Technical Advisory Board for all the work they put in, and that's under the auspices of different individuals, different chairs over many, many years. And again, they're acknowledged in the front end of the manual itself. So as far as highlighting some of the changes and things that have occurred since the 6th edition, one of the main highlights is the fact that we've actually added new content in the four new chapters that are at the back of the manual. So these new chapters, plus one new appendix, have really added some really good content that we've seen over the years, people have been asking for it, people have been looking for that to be augmented into what we already had. So that includes the repair, rehab, and strengthening chapter. That really dials into a lot of the work we do with our DC80 committee. We also have a new chapter on building information modeling, also known as BIM, and so again, that's been evolving over the last 20-plus years and steadily increasing its immersion into the industry, and so we wanted to have a chapter dealing with BIM. And our BIM subcommittee, DC20A, is again involved in a great deal of that work. The Anchorage Zone Design chapter now, it's going to be chapter 24 in this book, is actually an update and enhancement of what was previously known as M50.2 that was turned out in the year 2000. So that standalone publication, again, we've gone back, updated it, added to it, and really modernized it for where we are today. So that's a significant increase in information there to help work through all the different things related to Anchorage Zone Design, and we'll talk about that in detail. Obviously, sustainability is a huge topic these days, so we have a chapter now added on that talking about, in general, concrete structures and also, of course, pre-stressed concrete and post-tension concrete structures and all of those things that pertain to sustainability items. I mean, it's a buzz, of course, around the whole industry, but we wanted to focus on specifics related to PT as well. And then lastly, our new Appendix C, which is kind of a highlight summary of all the barrier cable testing we did recently for feeding information into our chapter 16 on barrier cable. So that new appendix is a great deal of information on that research and testing. To highlight the code changes and things that we've incorporated into this seventh edition, again, just a select few here. This manual revolves around ACI 318-19 now, ACI 301-20, IBC 2021, and then the AASHTO specifications. We've got the design spec ninth edition and the construction fourth edition. So these are just a select few I put out here just to talk about how we've modernized the manual to have everything referenced to those particular documents. Obviously, all of those same documents continue to update over time. So in the very near future, there's going to be ACI 318-25, for example. So as we get into the eighth edition, we're going to obviously continuously update the manual to keep in touch with those contemporary specifications. Also, of course, all PTI specifications and publications that are referred to by the manual are, as of 2023, the current versions of those. Those are also, of course, ongoing in their update cycles. But ultimately, we, again, key into each one of the ones that exist as of this moment. And then lastly here, again, I want to re-acknowledge and thank everyone who was involved in this manual project, a very exhaustive multi-year effort. TAB, all the authors, all the countless reviewers, Kyle being an example of that, and many, many others who've put a lot of time in reviewing and commenting and really helping make the manual a great publication. All the editing team and publishing team, all the people behind the scenes, so to speak. Just again, a great many, many man hours and a lot of effort to get it to be the way it is. So with that, I'll move into the first of many chapters here, of course. I'm going to kind of go chapter by chapter to kind of give you a dive into the highlights of what the purpose of that chapter is. Look at the content, again, some of the relatables that have to do with how it interfaces with other publications, and really just kind of give you an essential understanding of how each chapter provides you specific information. And again, I'm going to walk through all 25 chapters plus the appendices. The purpose being, again, to kind of give you an understanding, because some of you on this webinar as an attendee might only be interested in maybe bridges, or you might only be interested in rock and soil anchors or storage tanks or something. So we want you to be able to not only find that information conveniently, but also see how things interrelate within the manual itself. So chapter one being the introduction, as you can imagine, it's really the kickoff to the manual. It's an opportunity for us to introduce what's inside the manual and really set the tone for what's coming in all the other chapters. There's a brief element of the history of post-tensioning inside of chapter one that really kind of talks about initial developments for PT hardware and technologies and how those have kind of evolved over the years. So for those who aren't familiar with the longstanding history all the way back to the 1940s and the 50s, the very, very cusp of beginning all the way to today, there's an element of history in there. Also as far as usage is concerned, we really break down and give a sense of how post-tensioning is used in buildings and slab on ground and bridges and how the tonnage in North America is kind of partitioned out by different segment of the industry. We also spotlight new developments that have transpired since the sixth edition and what's happened obviously in the industry as well. While some things you might perceive as kind of being the same as they've been since the 80s and 90s and doesn't seem like sometimes there's much change, there's actually always change, always continuous improvement and things of that nature. So we kind of spotlight that. Highlight PTI and the Institute itself to talk about what it brings to the table. And then again, relative to each chapter of the manual, talk about all the different changes that have occurred. Granted, some of the chapters have had maybe some moderate updating. Some have had extensive updating and additions. And then obviously adding new chapters to the manual itself is a major evolving content from where we were in the sixth edition. Chapter two is focused on applications. So this is a chance to really look at everything you can kind of think of that might consist of a project using post-tensioning. This is where we spotlight a variety of different project types. And then we also connect those applications to the committees that deal with those. For example, we might connect buildings to the DC20 committee, connect bridges to things that are happening with DC40 and M50 and things of that nature. So we connect information and point out how the committees are affiliated and then also other chapters in this manual, how they're specialized and related to the application. And then of course, those key publications that are also related to that topic. So as I mentioned, this really is kind of an introductory piece that talks about buildings, parking structures, bridges of all different kinds, storage structure, stadiums, things of unique structural applications, even on transfer members, slab on ground repair, all those different topics. And unlike previous editions where we kind of had a bunch of case studies baked into chapter two, we now refer people to the PTI project database, which we've now added to our website. That project database is a sampling of representative projects of all these different types. And so when you go to visit the PTI project database, you can start to see the current population of information there is from project awards, medals, and award winners. And over time, we're going to continue to grow that database to provide you access to these different applications and project types. Chapter three is really important, talking about PT systems. This is when we dive into the post-tensioning systems themselves, whether it be single-strand unbonded post-tensioning or multi-strand PT tenons, PT bar. We talk about their components, their elements, the differentiation between bonded, unbonded, things of that type. We also really feature a little bit of the durability aspects of those systems. This is where, again, a lot of the systems are obviously not only focused upon providing post-tensioning and pre-stressing to the concrete structural element that they're inside of, but they also need to protect the pre-stressing steel and provide a highly durable post-tensioning element. We start touching on some of those component aspects and their function within the durability content of each system. We also, again, refer here to the Post-Tensioning Terminology Publication, also known as PTT. That's another publication that comes out of TAB, and that's undergoing some updates right now, but that's really your resource to gain all the different definitions and terminology descriptions for a variety of terms that pop up in the PT industry and certainly pop up in this manual itself. Chapter 4, I think, is one of the most important chapters of this entire manual. So if you were to spotlight any one of those and take that away from today, I really encourage you to study Chapter 4. This is a comprehensive guide to all the different things related to specifying post-tensioning. So for the designer, the contractor, the owner, anyone, this is where you're going to be able to get a lot of great information on how post-tensioning is specified. It ties into other elements here, of course, that are related to specifying PT, like the PTI publications, ASTM, ACI, AASHTO. So this really gets into a detailed discussion of component information and, again, pointers to those specific resources for material specs, any kind of specifications related to construction activities, materials, testing, that kind of thing. So it gets into every kind of system, like I say, unbonded, multi-strand, bare cable, stay cable. There's a lot of information in Chapter 4 also about grouting. So while it's not trying to replace or do everything that the M55.1 publication does with grouting, it certainly delves into a lot of the things related to that and carry it over. This chart you see on the screen here is one of the nice templates that really talks about the flowchart for material component specs, fabrication and construction specs, and things like that. So, again, this is a navigational chapter, it directs you to specs, it really puts a lot of context around it, but it's not replacing the specs themselves. Chapter 5, this is our analysis and design chapter. I think this is a fantastic chapter for people that are beginners with pre-stressed concrete in general and certainly with post-tensioning. It really introduces fundamental introductory concepts on how pre-stressed concrete works, how post-tensioning works, the concept of flexural analysis, equivalent loads. It gets into a detailed discussion about flexural design, surface stresses, strength design, things of that nature. So it's really a step-by-step walkthrough. Several things in here are consistent with obviously how this has been shown maybe in the 6th edition and some previous manuals, but we're trying to refine it and hone it a little bit further to make it as clear as possible, again, for the beginner to understand those types of things. And we also talk about shear design, of course, both in a one-way member context as well as two-way slabs where you've got to deal with punching shear and other things as well. And then there's a little segment in there about pre-stressed losses. So, again, another great chapter if you're just getting into, on the design side, trying to understand the fundamentals, that's a great place to start. Chapter 6 is a very detailed chapter, you know, no pun intended, it's about detailing instruction for buildings. There's a lot of things that this interfaces with that comes from other PTI publications, but if you're in the PT building design world, dealing with that as a contractor, a designer, an architect, whatever it might be, this is a great place to really get information on Recommendations on how to design post-tensioned buildings, again, this could be one-way systems, two-way systems, office buildings, residential towers, you name it, parking structures, but really has a lot of great content in here and it intentionally interfaces with materials that come from our 20.2 publication, which has to do with designing for restraint to shrinkage, our 20.7 publication, which has a focus on parking structures, and then our 20.9 document, which is about Recommendations for building design, PT building design, and then lastly, our M10.3 publication, which is a field procedures publication dealing with elevated PT building construction. So all these things are kind of integrated and referred to, and it ties into Chapter 6 really well. We provide you several things related to general notes that could be included on drawings, or details, what I call situational details for special conditions, and even things, like I say, for removing restraints so we can mitigate cracking and things like that. And then lastly, it kind of has the in-depth construction procedures information. So again, it's not trying to replace all these other publications, but it's really pulling forward highlights for the beginning point of understanding post-tensioned building design and construction. So Design Examples, Chapter 7, is another great chapter for beginners. This is where we really walk you through some key typical examples of designing with PT. It also has been updated, again, quite a bit to acknowledge contemporary design tools, different software, things of that nature. We're focused upon how the current practicing engineer would be designing a building and giving them, again, those fundamental examples of how to do things relative to, in this case, what we've selected for highlight are very common examples. We've got a one-way slab with typical parking structure loading, a typical parking structure beam, single-span condition, and then a two-way residential building slab, which is a very prominent building system, obviously, two-way slabs in a multi-story or high-rise setting. So walking through those design examples, they also include a two-span analysis, kind of looking at an indeterminate structure where you've got to look at also secondary effects and things like that. So, again, great chapter for beginners, an opportunity for people to really dive in detail and look at the different steps involved in checking stresses, looking at flexural design, shear design, that kind of thing. Chapter 8 then gets into seismic design, and it's really more of an overview of seismic design elements. There's obviously different ways to reinforce diaphragms in a building for seismic load resistance. This talks about some fundamental elements of diaphragm design, seismic effects in a building, but also talks about the benefits of PT in that context versus non-pre-stress reinforcement and talks about the different examples that we provide here on how you can design a diaphragm using post-tensioning as the, again, reinforcing to transfer those forces into the shear walls and the frames and things of that nature. And just in general, some additional comments and information on detailing, shear and moment capacity of diaphragms, and then a little bit of information about vertical elements like PT walls or frames and what that would be in a lateral load setting from a seismic standpoint. Quite a bit of information in Chapter 8 that's very helpful for those who have to deal with that. I know some parts of the country, that's a day in and day out exercise, and other parts, maybe not so much. Chapter 9, another great starting point for, again, planning a building project, looking at different floor system options. This is where you get into two-way systems, one-way systems, transfer members to really spotlight a lot of the fundamental understanding of what the benefits are and some of the span depth ratios and other types of typical aspects and characteristics are of these different floor systems. And then we talk also as well about floor penetrations and floor openings and how those impact framing out a building floor. So again, a wide array of information in Chapter 9, very useful to architects and engineers and contractors to really start to plan out how to use post-tensioning in a floor system. Chapter 10 is on parking structures. This, again, interfaces with our 20.7 document as well as actually ACI 362.1 dealing with parking structures. So here, again, we really point out a lot of the advantages post-tensioning has in a parking structure assembly, all the major efficiency and economic advantages, and really get into a lot of recommendations related to how to plan out a parking structure with post-tension framing with, again, typically one-way beam and slab systems, and going through all the different durability aspects as well, all the major benefits from a durability standpoint of parking structures. And then discussing and evaluating different load conditions and things like that to consider, as well as the fact that obviously in parking structures, it's pretty common to see barrier cable as one of the elements that is involved in both pedestrian restraint and vehicular restraint in a parking structure, though I'll talk more about Chapter 16 that really focuses specifically on barrier cable. Chapter 11 is on slabs on ground, and this really covers a wide array of the evolution of post-tension slab on ground since its beginning origins. Obviously, houses have been built for decades and decades, and as post-tensioning entered into the slab on ground world in the residential side and then eventually evolved into industrial, commercial, courts, tracks, other elements, it's very much a long history of how that's evolved to design post-tension slabs on ground. There's obviously different soils conditions that can be encountered, whether it's expansive soils or stable soils. So again, this really ties into our DC-10 committee and publications that they've created. We talk about the different types of slabs, again, when you talk about the residential side, for example, ribbed slabs, uniform thickness slabs, and it kind of gets into key elements that you can find, again, interfacing with DC-10.1, 10.5. These are, again, other design publications related to post-tension slab on ground. And then also coming soon, we have our DC-10.9 design guide that's coming out. So it really brings a lot of those key elements into this chapter and helps you set the table for working with post-tension slabs on ground. And we do encounter a lot of people that come our way that are just getting into that as a brand new experience, and we want to be able to help them and guide the way so they can understand that much better. Chapter 12, this is where we really focus on all things bridges. This is a very lengthy chapter, but it really dives deep into a lot of different elements regarding bridge types, design and construction techniques, all the history and advancements from the very beginnings all the way to today. And this is where, again, you name a bridge type, obviously with concrete, and you start seeing post-tensioning and how it impacts that accordingly. You've got box girders, segmental construction, both cast-in-place and precast segmental, splice girder technologies, arches, stay cables, all those different things we're going to touch on, highlighted. And then we get into, again, greater detail on considerations that need to be accounted for for cast-in-place formwork, balanced cantilever construction methods, span-by-span, incremental launch. So, again, a fantastic overview of all things bridges, and really a nice way to get the context of history coupled with where things have been heading over the last several years. Stay cables is right after that in Chapter 13, and this now focuses squarely on stay cables. This is where stay cables come out of our DC-45 committee, and so specific to that publication, DC-45-1. And this, again, spotlights the consideration for design, all the different forces, the special loading, and then all the materials, considerations, components, details, also durability, of course, hugely important in stay cable systems and bridge construction, and then also more information on stressing and installation. So a nice highlight of a lot of things related to stay cables, specifically, which, of course, like I say, we have a special committee that deals strictly with that. Storage structures, Chapter 14. This is now another segment of the industry where some people may not even realize this exists, but we have a wide array of structures like storage tanks, silos, nuclear facilities, other things in the civil engineering realm that are post-tensioned, containment structures, things. So this, again, spotlights those, talks about key analysis tactics, design considerations, detailing. You know, there's post-tensioning in walls, floors, roofs, and, again, there's also both unbonded and bonded PT used in these storage structures. So a very comprehensive look at all those things that deal with that. And again, this is where we get into some areas of the country have different types of storage facilities built in certain ways and others, this is a commonplace thing to see. So important information on storage structures. Next moving over to rock and soil anchors, Chapter 15. This is a similar type of unique segment within the PT world. This is connected directly to our DC35 committee and their 35.1 publication, which really puts forth a broader way of recommendations and design and spec requirements for rock and soil anchors. Again, these are used typically for earth retention, both permanent and temporary, reinforcing dams, reinforcing any embankments. There's all kinds of different applications for rock and soil anchors. But again, this really delves into the rock and soil anchor components, the different types of, you know, anchors themselves, the term anchor in this context is the entirety of the tendon, if you will, but it's got the different pieces and parts and how those are put together and what their purpose is, again, from a durability standpoint and from a structural anchoring standpoint. So great information on stressing, load testing, acceptance, and again, key interfaces between this and the DC35.1 document. Barrier cable systems. This chapter has been greatly enhanced and it actually has now been updated and is replacing our technical note 14, which has been in existence for quite some time. So now when you want to go look at post-tension, I'm sorry, at barrier cable design and information, you'll find it here in chapter 16 of the PT manual. So this really gets into a detailed look at the code requirements, the forces that barrier cable is subjected to, design considerations, methods, recommendations, and then it also connects to our appendix C, which is newly added, which relates to all the testing and research that was done with barrier cable recently to try and look at specifically things like short span barrier cable and how the design equations and what the behavior is versus theory versus reality and those kinds of things. And then it provides several design examples as well to try and provide the reader with an understanding of, hey, this is what the code's asking me to do. This is how you can apply those code requirements into a design example and design for different barrier cable span conditions, loading conditions, things like that. So this is now your barrier cable Bible as far as replacement of Techno 14, and it has a great deal of updated information since the sixth edition. Chapter 17 is a special chapter that really digs deeper into this topic of dynamic loading and fatigue. So it's really a detailed study, and it's, again, been updated to current references and things as well since the sixth edition. Looking at dynamic effects on concrete structures, obviously with a focus on fatigue of both the unbonded and bonded tendons, but also concrete fatigue. So a detailed study, a lot of key resources that are referred to out of this chapter that talk to other documents that really expand upon this whole discussion of the performance of concrete structures under dynamic loads. Talks about the different load types, their responses, and then really gets into a lot of detailed discussion about class UC or T prestressed members. That's where you've got uncracked sections, partially cracked, and then you've got all these discussions as they tie into the performance of slabs, beams, vertical elements, and things of that nature. So again, for those who deal with that type of work and want to know more about it, not only does this chapter cover a lot of it, but it also, again, points to a lot of really good external resources as well. Chapter 18, fire resistance, I want to thank especially Dr. Kudur out of Michigan State for this chapter, the primary author on that. Really the whole conversation about fire resistance of PT structures is always top of mind for a lot of designers tying into the code requirements for concrete cover, member thickness, that kind of stuff. And this really looks closely at the requirements, the behavior of PT structures under fire testing and fire exposures, the performance of the materials themselves, both the prestressing materials and the concrete itself, and then looks at rational design procedures referenced again from various different sources. So once again, touches on the key elements that you should know if you're designing and you have to consider obviously what's happening with your local jurisdictions code on fire resistance, but also those extensive references that are mentioned in the chapter are good places to go for even more information on the subject matter. Next is chapter 19, durability. So this is where we really get into a deeper discussion about all the things that are happening relative to post-tensioning systems in buildings, bridges, and then again, both unbonded and bonded tendons and looking at durability characteristics, considerations that have to be taken into account to maximize durability over the long haul. This is where we get into again, the QA, QC of elements, things that actually are derived as well out of our plant certification program, for example, for the unbonded tendons, all of our extensive requirements for grouting procedures, quality of grout materials, grouting procedures themselves, and how that's done in a quality way. So, any and all things you can think about related to durability of PT systems in different structural applications, and how those strategies are accomplished, and also how they're tied into specification requirements that PTI and other sources have put out there. So, this is, again, a really good way to touch base on all different structures and look at the durability side. Chapter 20 on inspections. This is where we now get into, again, tying into our other programs as well, material specifications, field procedures, things that ought to be accomplished in the field during the inspection process. And if you look at our field certification programs for someone getting certified as an inspector, slab-on-ground projects, elevated structures, like Level 1 and 2, for example, those who are familiar with that workshop in the elevated side. And obviously, there's inspectors and people on the multistrand side as well in the bridge world. So, anything related to inspection procedures, tying again into the requirements in the codes, specs, affiliations with our certification programs, all the different kind of checklists and steps that need to take place. And this not only applies to the tenon installation and making sure things are copacetic with that, but also concrete placement, stressing, grouting, all those different pieces, and the ever-important tenon finishing. So, this is a great chapter to refer to when you want to look at all things related to inspecting PT structures, inspecting PT projects, and the various pieces that relates to different systems. So, Chapter 1 really talks about all of our certification programs, the main ones being, of course, plant certification and field certification. So, this goes into an overview of those programs, talks about them and their importance, talks about how they're also, again, linked to specific committees, specific publications. It kind of outlines the specifics of the unbonded tenon plant certification program and what that entails, which is, again, a big part of the requirements that are aligned with trying to make sure materials are of high quality, the processes involved in producing those tenon materials, and then, of course, our field certification workshops and classes, a wide array dealing with, like I say, slab-on-ground, elevated work, repair, multi-strand grouting, all those things that are part of the field side of the construction process. Those are spotlighted here. It really gives you a keen sense of the Level 1 and Level 2 differentiation, work experience, things of that nature. So, this is, for those who are looking at getting certified in one context or another, a great place to get into information that will then point you in the right direction, as well, to what PTI has to offer for all these certification programs. So, again, this has been updated quite a bit since the last time, as well, has a nice new kind of a flow chart here, as well, an organizational structure, and helps the reader understand that to a better degree, as well. So, now we get into our new chapters. So, this is our first of our new chapters. This is Chapter 22 on Repair, Rehabilitation, and Strengthening. This comes, again, straight out of our work in our DC80 committee, which is focused on repair. So, this chapter, there have been a lot of requests for this over the last several years. That's why we initiated getting this incorporated into our PT manual. And, really, this whole chapter has a lot of connectivity to the DC80.3 publication, which looks deeply at evaluation, repair, strengthening, things of that nature, and really talks about the different recommended steps, processes, and things of that nature. So, it walks you through that, as well, with highlights, talks about the different elements and tools and procedures available to evaluate a structure, an existing structure, look at how to evaluate, you know, tendon damage, tendon corrosion, look at different testing elements and procedures. Then, repair techniques, proper processes, and then going through, again, material specifications and things of that nature, plans and specs. If you're creating those plans and specs for a repair project, you know, recommendations in that realm, as well, and then, overall, long-term maintenance of a structure. So, again, this is not replacing DC80.3. It's complementary to it, but it's a great chance to finally incorporate a lot of this important information into the PT manual. Chapter 23, another new chapter. This is from our DC20A subcommittee on building information modeling. This is where we finally touch base on something that's been evolving over many decades now. It's continuously growing every year as to how it's being utilized in the industry. You know, I remember back in the day, there used to be, you know, different technological advances that kind of seemed nonstop that people were trying to keep up with, and then, obviously, BIM came along, and it's been doing the same thing, constantly growing and evolving in the way it can be used as a tool, the way it can really help both designers and contractors accomplish a project. So, in this case, looking at BIM in the post-tensioning world, looking at PT systems, PT applications, we got a lot of cool images and different descriptions of how it's utilized in the process. Talk about level development, LOD definitions, and the way PT kind of works its way through those different channels from the very beginning, schematic planning origins, all the way through the design and construction process. So, different things like that. Construction applications, we show a lot of advantages there that have to do with using BIM, and then laser scanning as well, gathering content from the field, gathering that data and using it, and also allowing the owners and operators to have that information available. You know, as you see a lot of times on projects where they're trying to add maybe new floor openings or do some other things to modify a structure over time, it's really helpful to know where PT is located, understand how things are structured and put together, and then how that connects. So, BIM's a great tool, and we have an informational piece here from that committee to finally talk about it. Chapter 24 on Anchor Zone Design. So, the big thing here on this new chapter, as I mentioned earlier, this really moves the previous M50.2 publication forward into the PT manual. So, now that document, which used to be standalone, it's kind of a red-colored publication for those who are familiar with it, it's now Chapter 24. It's been updated to all the different new regulations, ACI, AASHTO regulations and requirements. We've aligned that with those codes to update it. We've also added some new examples, some significant new examples, to really give people additional information on different anchorage zone design considerations and arrangements and things like that. And again, of course, this chapter focuses on both single-strand unbonded PT anchorages, as well as multi-strand PT bar anchorages, things like that. So, it's a very comprehensive publication, now baked into the manual in Chapter 24, and really a great resource for those who have to deal with anchorage zone design in all of its detail. Sustainability is our last new chapter. This is, again, a hot topic across the construction world and design world. So, it really highlights a lot of the sustainable benefits of PT, concrete, looks at lifecycle assessment, product category rules, environmental product declarations, all those different buzzwords, all the acronyms you've been hearing and talking about. And then we give examples. We have comparative examples of different building types to look at their relatability in terms of sustainability. And then, again, there's a lot of good things here that refer to other resources on the topic. So, for those dealing with this subject matter, which, again, is top of mind for a lot of folks these days, this is a great new chapter to help touch on that subject and start to really delve into what PT can do to greatly benefit the sustainable side of things. So, I'll kind of finish up here with the appendices. So, Appendix A has been in the manual before. It's a very simple design aids appendix. It does cover some good explanations on how to look at friction losses. That interfaces with a lot of the information from ACI 423.10. There's another piece about anchor set effects. So, those are key things it's kind of referred to out of other chapters, like Chapter 6, for example. And so, good information here, and then also just handy information on the properties of prestressing steel, properties of other reinforcing steels. So, a handy appendix to have in the back of the manual. Appendix C is another handy reference for conversion factors. So, simple things you've grown accustomed to as far as being able to convert metric to English, or back and forth, and do with those different pieces. And then lastly, but not least, the PTI barrier cable tests. This is where this whole Chapter 16 refers to Appendix C. It talks about all this testing that PTI funded and worked on to look closely at PT barrier, I'm sorry, at barrier cable performance under different load conditions, deflection, and reactions, all these kinds of things that feed into the new recommendations on all things barrier cable. So, I encourage you to certainly look at Appendix C in great detail, because there's a lot of great information from those test results. So, with that, I'm going to kind of summarize and leave us enough time here for Q&A. Again, look at the manual as our flagship publication, because it is. This is our number one document to really cover all aspects of the PT industry. It's also really what I call our point of entry for information. So, if you're an experienced person, great. That's where you can come for this information, obviously. But if you're especially a new person to the industry, this is your point of entry for all things you can possibly imagine related to PT, and how it's used, and how it's specified, and how it's built, and all those kinds of things. So, I really kind of always refer to the manual as our reception desk or information kiosk. It's our place to really begin your journey with post-tensioning, and it's an amazing resource for that matter. Again, the 7th edition has a significant amount of updating and enhancements since the last edition. So, I really encourage you to delve into those things and take advantage of them. And again, these chapters themselves point the reader to other appropriate subject matter, specs, guides, resources. So, while the chapters themselves are comprehensive and have a lot of great information, they also really help you have a roadmap to where you can go for even deeper information on each one of those subjects. So, with that, I'll kind of wrap things up and turn it back over to Kyle, so we can have time here for questions and allow for those to come forth. And I'll let Kyle kind of moderate that through the Q&A. Yeah, thanks. So, we've got a handful of questions here. We're going to try and get to as many as possible. If we don't answer your question, there's a couple different approaches to getting a hold of us. One's what you see up here, and we'll show you in the very last slide another way to contact us with questions, especially if they're a little more detailed in nature. But first question, Tim, comes from a guy named Jim, asking, what's the best way to get your hands-on manual? Where would you buy one? All right. So, yeah, you go to the PTI website and go to our PTI store, our bookstore, and there you'll find it's actually already still one of the highlighted publications. So, if you go to our bookstore, click on the PT manual, or you can also search for it, but it's right there on the header, and you can then click on it and acquire it that way. There's a hard copy version available, and then there's also a digital copy available, or you can even buy both of them as a bundle. So, it's pretty easy to get to in our PTI store. There's member pricing and non-member pricing, but we've got, yeah, we've got all the books now in our warehouse, and we've started off with a digital copy first. So, they're readily available, and you can acquire it pretty easily. And then, do we have any plans to provide a version with SI units in the future? So, this has dual units in it. It's already a dual unit manual. So, it's set up for that currently. Next question that we'll choose as they just keep rattling in here is we'll go with, will PDF of the presentation be made available for the slide deck, this particular presentation? Yeah, so now what you'll have is when we put it on our website as an on-demand webinar, you'll have access to the on-demand recording. And again, that'll be an opportunity to, by doing the on-demand webinar and then taking the quiz, that's what we're going to do with it. We're going to put it into our learning management system, and that's going to be where it lives. We're not going to issue a separate PDF or something like that at this time. A couple other questions. What other publications do you recommend to research for beginners getting into slab-on-ground design for residential and light commercial projects? Right. So, like TC, I'm sorry, DC 10.1, there's DC 10.5. Those are kind of the first beginning pieces that are really great resources to start off. We're also, just for those who have been asking before, we're also trying to revise and reformat our design seminar on slab-on-ground design. So, we're going to try and bring a lot of that to bear as well in a webinar format. So, in addition to the publications that DC 10 produces and starting points with those, the DC 10 committee has also been working on trying to get ourselves some other webinar content so we can really walk through beginning information on how to design, considerations, you know, other things as well. So, that's a high demand right there. We know that in the industry, and we want to help people out with that. There's a question. Do the design examples include column designs where hyperstatic loading is considered? Did you say there are more design guides, manuals that include more example problems coming soon? Yeah. So, those design examples in Chapter 7 really look at the horizontal element itself, the slab, the beam, the analysis piece on a two-span beam, talks about secondary effects, talks about understanding the general concept of that and how that involves reactions at the supports. And you've got those to consider because of the fact that it's an indeterminate, it's not a simply supported beam like one of the other examples. So, it doesn't get deep into any kind of frame evaluation or anything transmitting that into the columns themselves, but it's an introduction to the topic. We also have other technical notes on secondary effects that are certainly available in our tech note library online on our website, and then other things that have even also recently been published in the PTI Journal talking about secondary effects as well. So, some other thoughts about that. And it does include secondary hyperstatic in the slab design itself, though. Yeah. Yes, I'm sorry. Yeah, in the two-way, yes. One last question. Is there a cycle for the next publication, i.e., every five years, keeping up with ACI? Right. So, certainly, I know, like you said, as you mentioned, to kick things off, there's probably people on this call that weren't even born until after 2006, and they may be a little bit younger even than the manual, but we're not going to have a long period of time between the 7th edition and the 8th edition. So, we're, in general terms, trying to keep on a cycle that links, like you said, to the ACI and AASHTO and other types of reference materials. So, the 8th edition, approximately a five-year cycle is what we're aiming for, coming out of TAB, and a whole new strategy on that to make sure it cycles accordingly. A lot of our publications are on that same type of five- or six-year cycle, and we're not going to have this big gap again. Well, there's several other questions. We're not going to have time to get to all of them, so I encourage you guys to email what you see on the screen here. We're going to show you another place to get a hold of PTI, too, to send in those questions. Please be very specific with your questions. You know, there's a few questions I'm reading on here. They're pretty generic, like any updates to stresses. So, the more specific you can be, the better we can answer the questions. We can route them to the appropriate committees, the appropriate individuals with that back and forth. So, more is better by a long shot. Give you guys a sneak peek of what's coming up for the next three webinars. Like we said, we're going to be doing this every single month, second Wednesday of the month, and it's going to be at that same exact time, that 1 o'clock Eastern time, the 10 o'clock Pacific time. The next one is February 14th, and we have a very well-established West Coast engineer who's going to be going over PT podium design and construction. And also, pro-tip, that's Valentine's Day, so don't forget that, and celebrating your love of PT. Wink, wink. March 13th, we're going to talk about restraint cracks from an engineer out of Houston who focuses solely on post-tensioning design and really spearheaded the document DC 20.2-22, which is all about restraint calculations, best practices for mitigating details. It's a pretty lengthy document that we published a couple years ago. Really worthwhile document, actually, to get to know, especially as you get a little more advanced into PT design there. Then the third one is PT design best practices on April 10th. That one's going to go through, okay, now that you understand the fundamentals, say, basic slab design, all that, what do you do with the more complicated things that you don't see in an example, like a weird slab step, a really weird punching sheer situation, maybe some long-term considerations to think about. And it's going to be more of a high-level review of here's different things to think about, here's some tips and tricks on how you can handle these unique situations there, and that's going to be from another well-established consulting engineering company that's going to be providing those three. So that's the update for the next three that we're going to see. And then I think on the last slide, right, Tim, we have the info at post-tensioning.org that you guys can get a hold of us as well with those questions. Absolutely. Yeah, I appreciate that, Kyle. Yeah, thanks for highlighting the next ones. Like I said, we're going to make this a regular routine, so we welcome you back. Fairly soon, we'll start opening the registration and everything for the February webinar. Glad to have you here, everyone. Appreciate your attendance. Nice turnout, and we definitely are looking forward to having you continue on with us as we continue with our education journey with post-tensioning and provide a lot of good resources to the practicing professionals out there in the community. But that brings our webinar to a close. Thank you.

Post-Tensioning Institute

seventh edition

post-tensioning manual

design

construction

maintenance

repair and rehabilitation

building information modeling

sustainability

industry standards