Engineering Statics: Open and Interactive

Reviewed by Peter Kazarinoff, Professor, Portland Community College on 12/17/24

Comprehensiveness rating: 4 see less

The text covers all of the areas of a 2nd year Engineering Statics college course. This includes particle mechanics, rigid body mechanics, trusses, internal forces and inertia. One missing section are reference materials at the end of the text. There is no list of equations, properties of lines and areas, or properties of solids included.

Content Accuracy rating: 4

Based on this review, the accuracy of the text is very high. No errors in calculations were seen in the text. One problem with the text though is that some of the links in the online version of the book are broken and don't lead to their desired destination. This includes the links in Chapter 2 Section 4 Examples. These links need to be updated.

Relevance/Longevity rating: 5

The content is up to date. Like math and physics, the content in Engineering Statics has not changed in a long time. The presentation of the content is up to date and examples shown, images included look relatively recent.

Clarity rating: 4

The text is well written and easy to follow. Vector notation used in the text is easy to read and is consistent.

Consistency rating: 4

The text is consistent in terms of terminology and mathematical notation. Less consistent are the included figures and drawings. The figures from the Mechanics Map textbook are all consistent, but figures from other sources show different fonts, colors and presentations. Figure cohesiveness could be improved.

Modularity rating: 5

The text's chapters are pretty much self-contained and can be adapted or used on their own. There are no enormous blocks of text without subheadings to break them up. The book is constructed in Press Books and should be able to be adapted quite easily.

Organization/Structure/Flow rating: 5

The topics are presented in a logical fashion. The flow of the book is typical of other Engineering Statics textbooks starting with particles, then free bodies and finally trusses. Key Takeaways are included at the end of each section.

Interface rating: 4

The text is free of significant interface issues. The images, figures and charts are not distorted and the font and font size is easy to read. Some of the links to outside sources are broken.

Grammatical Errors rating: 5

The text does not seem to contain grammatical errors.

Cultural Relevance rating: 3

The text is not culturally offensive, but does not make a concerted effort to include a variety of races, ethnicities and backgrounds. For example, in Chapter 3 Section 1 The Right Hand Rule, all of the hands shown are seem to be from white people. Another example is in Chapter 5 Section 1 Trusses Introduction. The example bridge trusses shown are not adapted from diverse geographic sources or shown how they are linked to the community. This is not uncommon in an Engineering Statics textbook, but is an opportunity for a newer Open Education Resource (OER) textbook to differentiate itself.

Comments

The best part of this book are the student submitted examples. At the end of most chapters (an exception is Chapter 2), the end of chapter problems were created by students. The variety and creativity of these end of chapter examples is the highlight of the text. My one suggestion is to include more of these student examples with each chapter. The student created examples are what makes this textbook different from other Engineering Statics textbooks. Instructors can never have too many example problems to pick from.

Reviewed by Amy Adkins, Assistant Teaching Professor, North Carolina State University on 9/6/24

Comprehensiveness rating: 5 see less

This book covers the majority of the fundamental statics topics covered in other major statics texts. It does not cover Virtual Work and does not have an index or glossary. The interactive text is easy to navigate with the tabs on the left side so an index is dire. Similarly, the PDF version of the text has an easy-to-use table of contents. In my opinion, the only slight downside to this book is the low number of example problems and "exercises"
aka homework problems) as compared to a classic statics textbook. However, the authors have given access to the book's source files and to the repository of questions, enabling instructors to edit existing questions or write new questions to fit their needs.

Content Accuracy rating: 5

I did not find any major errors with the content. I attempted a few "exercises" at the end of each sections and found them to be correct. I think it would be good to add the braces notation of a vector (i.e., F = {10i + 3j -19k}N) in the "notation" section of the back matter. This is a notation used in other popular Statics texts.

Relevance/Longevity rating: 5

Since Statics is a fundamental engineering course that will not evolve much, the content in this book will will continue to be relevant.

Clarity rating: 5

I found this book to be clearly written and get straight to the point on the topic. Reading through I found new ways to emphasize concepts my students struggle with. Geogebra is used cleverly to demonstrate 3D diagrams where a normal text can only attempt to draw a 3D object in 2D space.

Consistency rating: 5

The structure of the book follows a consistent pattern: Key questions; description of the topic content; diagram or math which demonstrates that content; example problem with answer and full solution which can be revealed by clicking; end of chapter problems

Modularity rating: 5

There is clear, short sections of text on each topic. It is easy to understand which topic you are reading and jump to another topic once you are done.

Organization/Structure/Flow rating: 5

The organization aligns with other popular statics texts so it is easy to follow.

Interface rating: 5

I did not encounter any interference issues with navigating or interacting with the images/diagrams

Grammatical Errors rating: 5

I did not detect any grammatical errors

Cultural Relevance rating: 5

I did not find any cultural references in this text. The examples I reviews are all about particles or structures, rather than humans.

Reviewed by Nathan Holland, Lecturer, Old Dominion University on 7/27/24

Comprehensiveness rating: 5 see less

The text comprehensively covers standard topics found in major Statics textbooks, closely following a similar/typical sequence:

General Principles (Ch. 1: Introduction to Statics)
Force Vectors (Ch. 2: Forces & Other Vectors)
Equilibrium of a Particle (Ch. 3: Equilibrium of Particles)
Force System Resultants (Ch. 4: Moments & Static Equivalence)
Equilibrium of a Rigid Body (Ch. 5: Rigid Body Equilibrium)
Structural Analysis (Ch. 6: Equilibrium of Structures)
Internal Forces (Ch. 8: Internal Forces)
Friction (Ch. 9: Friction)
Center of Gravity and Centroid (Ch. 7: Centroids and Centers of Gravity)
Moments of Inertia (Ch. 10: Moments of Inertia)
The appendices include trigonometric formulas and properties of commonly encountered shapes, which are typical in such texts.

The book does not cover Virtual Work as a final topic, but this is not always included in all Statics curricula.

The text does not include an index and/or glossary; this may be a helpful addition.

Content Accuracy rating: 5

Upon reviewing the text of the chapters for accuracy, nothing appeared to be glaringly wrong or incorrect.

Relevance/Longevity rating: 5

The topics covered in this text remain relevant, with content and examples that are both understandable and current. To maintain student interest, I think it will be essential to update some of the examples periodically.

Clarity rating: 4

I think there is room for improvement. My perspective as the instructor offers an initial assurance of clarity given that I have the background. However, the true measure of the text's effectiveness (and my own effectiveness as the instructor) will be determined by student feedback. Although I am uncertain if all demonstrations and interactive elements are sufficiently clear, there is a clear effort and desire to engage students.

Consistency rating: 5

The structure and language used in this text appear consistent throughout each chapter. It appears that the author wants to ensure clarity and coherence across the entire text.

Modularity rating: 5

The text appears logically segmented, enhancing readability and comprehension.

Organization/Structure/Flow rating: 5

I believe that the text is organized in a sequence that aligns with the standard progression of topics in a typical Statics course.

Interface rating: 4

The text is easily navigable in PDF format, with images and charts appearing clear and undistorted. Providing an option to enlarge figures via external links could enhance accessibility. The text, including equations, is professionally presented and easy to read. Text for outlining exercises like on page 104, could use enlargement for readability.

Note: The 'Open Textbook Library' online format link currently results in a 404 File Not Found error. Editing the link to https://engineeringstatics.org/ allows access to the online version.
This format is user-friendly, with an intuitive menu and breadcrumbs/bookmarks for easy navigation, though images may take a moment to load.
In a few instances, the text overlaps with other text, such as in Example 1.2.3 and the Hint section. This would not necessarily take away from the readability of the text.

Grammatical Errors rating: 5

I did not encounter any grammatical errors in the book. The text appears to be edited well.

Cultural Relevance rating: 5

I did not find any content in the text that is culturally insensitive or offensive. The examples predominantly focus on particles, rigid bodies, etc. rather than individuals, thereby avoiding any emphasis on race, ethnicity, or background.

Comments

This text stands out due to its interactive elements, accessible via QR codes in the PDF and embedded links on the webpage. Additionally, the inclusion of a YouTube playlist that closely follows the book (https://www.youtube.com/playlist?list=PLkrFJ_Qn-1ckKNtR2O2eKdX0BHN4Sfr5a) is a significant advantage and supplement for courses.

It may be useful to include more examples in the text and deterivations, but overall I believe the text is worth exploring as an open source text for statics courses.

Reviewed by Mohammad Valipour, Assistant Professor, Metropolitan State University of Denver on 8/28/23

Comprehensiveness rating: 4 see less

I found this book very interesting and thorough. Fortunately, the book covers most of the syllabus for Statics courses that I teach. The order of the chapters is also logical and in a standard form including Introduction to Statics, Forces and Other Vectors, Equilibrium of Particles, Moments and Static Equivalence, Rigid Body Equilibrium, Equilibrium of Structures, Centroids and Centers of Gravity, Internal Forces, Friction, and Moments of Inertia. There are interactive problems at the end of each chapter of the book which can be considered as a quick review of the book. Also, I found the trigonometric tables very useful for students who have forgotten basic geometry and trigonometry. One of the interesting parts of this book is using QR codes for which you can have access to dynamic pictures of the book. The only negative point that I can mention is the lack of enough sample problems for each content. Students who take Engineering Statics need to practice many problems/examples to get ready for their exams. Only one sample problem for most of the topics is not enough particularly for those who need time to understand the concepts through solving sample problems. I think students can use this book as a study guide very well but they also need an auxiliary textbook/pamphlet to fill the gap of not solving multiple problems for each topic. Adding an index/glossary is also helpful.

Content Accuracy rating: 5

In the current format, the book looks accurate. I could not find any problem with a wrong answer neither in the solution nor in the final answers.

Relevance/Longevity rating: 5

I found the relevancy aspect of this book pretty high. Since the topics rely on the fundamentals of physics and follow Euclidean geometry, we cannot expect any change in the near future. However, the authors try to stay up to date by using matrix solutions which is highly appreciated. In addition, the users can take advantage of the graphical solutions if they use technology such as GeoGebra or a CAD program to make the diagram, then their answers will be precise.

Clarity rating: 4

Using subsections facilitates the readability aspect of the book. Supporting graphs are also useful. Thinking Deeper sections are also interesting for those students who want to know more about the concepts behind the problems. I like the friendly tone that has been used by the authors and the vocabulary and terminology are understandable for all readers even international students. Using more colorful figures may be attractive for students who are less interested in engineering problems.

Consistency rating: 4

This is my favorite part of this book. It is very consistent and readable like a story from chapter 1 to chapter 10. The overall structure of the book holds together quite well. I like that figures in each chapter have their own numbering system with respect to the chapter number. However, figure captions look too short, and adding some more information may be useful.

Modularity rating: 5

There are 10 chapters in this book. The author has done a nice job by putting sections and subsections in the right place. Different parts of the text are useable to be presented to students in different topics which might not be even the same in the book. The book includes occasional references to other subsections for further information, but such self-references do not look disruptive.

Organization/Structure/Flow rating: 5

I think the material is provided and put together realistically. The organization of this book is logical. The sections and even subsections flow easily together with the previous and following sections/subsections. I like the idea of using key questions at the beginning of each chapter. This book is organized and follows a clear structure. Each chapter starts with a chapter description and a list of sections. I found the online version of the book flow better due to the interactive design. The PDF version is also well formatted. Also, the topics are presented in a short concise fashion.

Interface rating: 5

An advantage of this book is having a user-friendly interface which makes it much easier for students to follow up with the materials discussed in the book. Unlike many other OER books, the PDF version does look like a regular book. In my opinion, the navigation of the book is easy for both the PDF version and the online version. All figures and graphs are clear and readable. The sections and subsections are loaded quickly, and the figures and diagrams can be loaded without any issues.

Grammatical Errors rating: 5

I could not find any grammatical errors in the book.

Cultural Relevance rating: 4

I did not find the book offensive/insensitive in any way. It would be better to cover more examples from different parts of the world to be fairer for international readers/students.

Reviewed by James Book, Assistant Instructional Professor, Pittsburg State University on 12/15/22

Comprehensiveness rating: 4 see less

This text covers most all topics under the statics umbrella with the notable exception of virtual work. The end of chapter interactive problem sets are excellent and make for a good review of the topics covered. The option to "randomize" each problem is a great help in exam preparation. The back matter covers useful trigonometric functions and provides handy steel sections tables.

Content Accuracy rating: 5

I found no obvious errors or biases in the text. The back matter equations and reference tables are accurate.

Relevance/Longevity rating: 5

The basic principles of statics covered by this text will remain relevant for a very long time. The end of chapter problem "randomization" feature will provide fresh challenges to the student and teacher. The prose used in writing the text is modern and up to date. Since it is provided on-line, the text should be relatively easy to keep current.

Clarity rating: 5

The text is written in an easy-to-read style with a fairly basic vocabulary. The technical terms used are well explained. The illustrations are adequate but could be expanded to include some simple video content. A feature to vary the font type and size would make the text more accessible. The use of color in many of the illustrations helps with clarity. The method of concealing the answer and solution guides to the example problems is clever.

Consistency rating: 5

The text follows a consistent, repeated pattern throughout. The presentation of each topic adequately builds on ideas and concepts from previous chapters. The overall structure of the text holds together well.

Modularity rating: 5

The text is divided into very manageable segments that can stand on their own. It does not appear to be overly self-referential. There are no enormous blocks of text or sections that run-on unnecessarily.

Organization/Structure/Flow rating: 5

The text is well organized with deliberate and logical progression through statics concepts. The on-line version of the text seems to flow better due to the interactive design, but both on-line and pdf versions are well organized.

Interface rating: 5

Both the on-line and pdf versions of the text provide easy and clear navigation. A check of several of the text hyperlinks showed accurate navigation. Charts, graphs, and other images were clear and readable.

Grammatical Errors rating: 5

No obvious grammatical errors were encountered.

Cultural Relevance rating: 5

The topic of statics does not lend itself to much discussion of cultural topics. The examples used in the text were generic and did not seem to be culturally biased, offensive, or insensitive.

Reviewed by Michael Pastor, Assistant Professor, Tidewater Community College on 11/27/22

Comprehensiveness rating: 4 see less

A fully hyperlinked and intuitive table of contents is available for this text. I could find no index, however, the PDF version is searchable, and a search bar exists in the browser edition. For the most part, this text covers all topics normally associated with a typical engineering undergraduate class in mechanics dealing with the state of bodies at rest. The text begins with Newton's Laws, Forces, and Vectors, then moves on to the analysis of particles and rigid bodies. The text also includes chapters on centroids and moments of inertia, as well as chapters on internal loading and friction. A section on virtual work and energy methods is however, missing.

Content Accuracy rating: 5

I have not noticed in inaccuracies and have used this text as an optional online resource in my sophomore level statics class for a number of semesters now. Students have never reported any issues.

Relevance/Longevity rating: 5

The relevance for this text is quite high. The material presented here has not changed in at least the last 4 decades. The online mode of delivery, however, is quite refreshing and a relative new achievement. This text is licensed under CC Attribution-Non Commercial-Share Alike.

Clarity rating: 4

Chapters are divided into sections and the information is brief and to the point. Occasionally supporting graphics are presented and these can be easily magnified. Very little time is spent on derivation or formulation of relationships presented. However, occasionally extra "thinking deeper" information is presented at a mouse click. Here optional background information is presented on certain subjects. There are some example problems associated with topics and these are somewhat interactive... usually involving showing an answer then showing a more detailed solution on mouse click . Occasionally, there is an interactive diagram demonstrating some concept visually. However, I did not always find these intuitive, and in some cases did not understand how to effectively manipulate them.

Consistency rating: 5

I did not notice any inconsistencies in terminology or framework. The work is authored in PreTeXt and powered by MathJax. I have always found it quite easy to navigate chapters and sections consistently in this text. However, I have never tried using it on a cell phone or pad. In the appendix, there is a notation chapter outlining many if not all symbols used in the text.

Modularity rating: 4

The text is divided into chapters (common to most texts of this type). Each chapter is then broken down into sections. An appendix with math formulas and steel section properties is also included. This helps comply with ABET standards. I, however, could not locate simple shape properties in any tables or diagrams either in the chapters or appendices.

Organization/Structure/Flow rating: 4

The topics are present is a short concise fashion. This in my opinion is appropriate for an online resource. However, I would like to see the availability of more details concerning the derivation and/or development of some concepts and equations. Perhaps this could be added in optional user interactive sections.

Interface rating: 5

Navigation of chapters, sections, and pages is quite easy and intuitive for this text. Some of the interactive diagrams were confusing and not well explained. A search bar is available to help locate specific ideas. However, this material is so consistently organized that navigation with the interactive Contents menu is all that I have ever needed.

Grammatical Errors rating: 5

I saw no issues here.

Cultural Relevance rating: 5

I noticed no insensitive or offensive areas in this text.

Comments

I have used this text for a number of semesters as a secondary resource for students in my engineering static classes. I think it would also work well as an instructor resource. The license allows for it to be upgraded and specialized to a users needs in a non-commercial and open way.

Reviewed by Anahita Khodadadi, Assistant Professor, Portland State University on 6/22/22

Comprehensiveness rating: 4 see less

The textbook covers the fundamental concepts of statics including, force and vector analysis, equilibrium, internal reactions, and geometrical properties. The textbook also includes required steel section tables and a review of trigonometry principles. I would suggest this textbook in combination with a textbook on basics of mechanics and material properties to students who seek learning about basic concepts of engineering design.

Content Accuracy rating: 5

To the best of my understanding the content of the textbook and the interactive exercises look accurate, unbiased, and thorough.

Relevance/Longevity rating: 5

The textbook contains basic principles of statics which are not expected to be changed unless a groundbreaking theory in physics emerges in the future! The text itself is arranged in a way that can easily be edited and extended. I appreciate the efforts that the author has made to create and embed the interactive diagrams and exercises within the textbook instead of inserting the link of available items across different references. This will maintain the configuration of the textbook in the long term.

Clarity rating: 4

The text is written in a friendly tone and even students’ presumptions and concerns are early discussed in first chapters. Technical terms are well explained for those who may not have any background in engineering. In the future, the author may include relevant videos to the textbook as well to enhance the clarity of the materials and better engage audio-visual learners.

Consistency rating: 5

The text and even visuals are consistent in terms of terminology, format, and graphics. All figures are numbered and mentioned within the text.

Modularity rating: 5

The textbook is appropriately organized in 10 chapters. Each chapter is explained in multiple subsections that allow readers focusing on small chunks of learning materials. The text includes occasional references to other subsections for further information but such self-references do not look disruptive.

Organization/Structure/Flow rating: 5

Both online and PDF version of the book are presented in a fine, clear and logical fashion. The online version allows easy navigation between different sections and subsections. The PDF version is also clearly formatted. It is helpful that each chapter begins with a series of key questions and ends with a number of exercises.

Interface rating: 5

I reviewed the online version both on a computer and smartphone. The interface looks fine on a computer but on a smartphone some of the interactive diagrams cannot be displayed. However, I think students may rarely use a smartphone as a primary means of accessing the textbook.

Grammatical Errors rating: 5

The textbook looks well proofed.

Cultural Relevance rating: 5

The textbook is focused on math and physics and doesn’t discuss culturally sensitive topics. Examples intrinsically do not have the capacity to demonstrate diversity and inclusion matters.

Reviewed by Peter Kazarinoff, Professor, Portland Community College on 12/16/21

Comprehensiveness rating: 5 see less

The topics covered in a typical college Engineering Statics course are present. The chapters follow a common Statics textbook pattern of concepts, starting with forces and particles and ending with friction and moments of inertia. Chapter 6 includes the method of cuts and the method of joints. The only thing that many commercial Statics textbooks have compared to this book is an extensive number of problems at the end of each chapter (the fiction chapter, in particular, had few practice problems) and more reference material at the end of the book such as the centroid of common shapes. What this book has that those commercial books lack are interactive problems.

Content Accuracy rating: 5

To the best of my knowledge, the content in the book is accurate. The interactive problems I attempted showed the same auto-generated answer as I recorded using pencil and paper. The equations seem accurate throughout. The reference material at the end of the book which contains things like trig identities and properties of steel sections seems accurate.

Relevance/Longevity rating: 5

The fundamentals of Engineering Statics, like introductory Physics and Chemistry, have not changed in a decade. So the content in the book is relevant to a current Statics course and will be relevant to future Statics classes. The only reason the book could become dated is that the interactive animations and interactive problems are no longer supported by new web browsers or new web browsing tools that I can’t even imagine will be in place in 10 years. The book has a pdf version that can be printed.

Clarity rating: 5

The clarity of the writing is high, the font and spacing are easy to read. The book is written in a formal academic style which is clear but can seem terse. The diagrams in the book are easy to read and use a common style to show forces, angles, and geometry.

Consistency rating: 5

The book is consistent from chapter to chapter and the formatting is consistent from chapter to chapter. The book has a clear numbering system for chapters, sections, and subsections. Each of the diagrams and pictures in the book follows the same captioning format. Equations in the book are formatted consistently and labeled in the same way. Each section within a chapter in the book contains a set of “key questions” that section addresses.

Modularity rating: 4

The book is broken up into chapters and each chapter is broken down into sections. A typical quarter or semester-long Statics course would cover almost all of the book. It would be possible to only cover a few chapters. These chapters would need to start at the beginning of the book. It wouldn’t make sense to try and pull out just the middle or end chapters as the material in the book builds up chapter to chapter. One way the book could be used is to just assign the interactive problems for practice.

Organization/Structure/Flow rating: 5

This book is organized and follows a clear structure. Each chapter starts with a chapter description and a list of sections. Each section starts with “Key Questions” and then proceeds with the section content. There are interactive problems at the end of each chapter.

Interface rating: 4

The online book interface is easy to navigate. Each chapter and section is clickable and it is easy to determine which part of the book you are reading. The sections load quickly and the images, diagrams, and interactive problems load without issue. In particular, the interactive problems are pretty slick. The only reason I don’t rate the interface as a 5 is that there is no search function. I don’t know how hard it would be to add a search bar to the online version of the book, but I do think a search function would be helpful. On my device, the book only took up the left half of my screen. This may be related to the browser/device I use, but in my reading, it seems like half of the screen real estate is wasted and a lot of scrolling is needed.

Grammatical Errors rating: 5

No grammatical or structural errors were found. The book seems to be free of typos and seems well-proofed. There also don’t seem to be any formatting inconsistencies chapter to chapter or section to section.

Cultural Relevance rating: 3

From what I read, I didn't notice any insensitive or offensive passages in the book. However, the lens of diversity and cultural relevance is not addressed in this book. Some of the pictures in the book depicting statics topics cover common “male-dominated” examples such as motorcycles, and football training sleds.

Comments

This is a well-written, high-quality, and organized book. It is a great resource for both instructors and students in undergraduate courses in Engineering Statics. For our needs, at a community college with a 2-year program in Mechanical Engineering and Civil Engineering, this book is a good alternative to commercial offerings from Pearson or McGraw-Hill. It’s a high-quality and interesting book with fantastic interactive problems. The only knock against it is that there could be more worked examples and problems at the end of each chapter for student practice.