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Roark's Formulas for Stress and Strain, 8th Edition
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14 of 15 people found the following review helpful
on April 22, 2012
As the all-around handy concise reference to stress analysis, Roark's remains King. The differences in the table of contents are listed below. The price is also quite reasonable for a 1072 pg book. Roark's strength remains in the extensive tables of many common and uncommon loading conditions and restraints. The chapters provide brief overviews of the theoretical concepts behind the tables but cannot be regarded as a teaching medium for these deep topics. For example, the chapters on fatigue & joints do not provide the education necessary to become a proficient stress analyst in these areas. Any serious stress analyst also has proficiency in an FEA package as well. Roark's formulas serve to provide terrific verification calculations to confirm FEA results are in the ballpark. Overall, there is no reason to be without this iconic textbook. Here is a short list of books which will greatly complement the concepts therein:

Theory of Elastic Stability - Timoshenko
Design of Welded Structures - Blodgett
Design of Weldments - Blodgett
Mechanical Engineering Design - Shigley
Materials Selection in Mechanical Design - Ashby
Deformation and Fracture Mechanics of Engineering Materials - Hertzberg
Mechanical Behavior of Materials - Dowling
An Introduction to the Design and Behavior of Bolted Joints - Bickford
Harris Shock & Vibration Handbook - Piersol
Peterson's Stress Concentration Factors - Pilkey

New topics in chapters 18-21:
-Fatigue and fracture mechanics
-Stresses in fasteners and joints
-Composite materials
-Biomechanics

Topics covered in the previous 7TH edition (851 pgs):

Chapter 1 - Introduction
Chapter 2 - Stress and Strain: Important Relationships
Chapter 3 - The Behavior of Bodies Under Stress
Chapter 4 - Principles and Analytical Methods
Chapter 5 - Numerical Methods
Chapter 6 - Experimental Methods
Chapter 7 - Tension, Compression, Shear, and Combined Stress
Chapter 8 - Beams; Flexure of Straight Bars
Chapter 9 - Bending of Curved Beams
Chapter 10 - Torsion
Chapter 11 - Flat Plates
Chapter 12 - Columns and Other Compression Members
Chapter 13 - Shells of Revolution; Pressure Vessels; Pipes
Chapter 14 - Bodies in Contact Undergoing Direct Bearing and Shear Stress
Chapter 15 - Elastic Stability
Chapter 16 - Dynamic and Temperature Stresses
Chapter 17 - Stress Concentration Factors

versus the new 8th edition (1072 pgs):

Chapter 1. Introduction
Chapter 2. Stress and Strain: Important Relationships
Chapter 3. The Behavior of Bodies Under Stress
Chapter 4. Principles and Analytical Methods
Chapter 5. Numerical Methods
Chapter 6. Experimental Methods
Chapter 7. Tension, Compression, Shear, and Combined Stress
Chapter 8. Beams; Flexure of Straight Bars
Chapter 9. Curved Beams
Chapter 10. Torsion
Chapter 11. Flat Plates
Chapter 12. Columns and Other Compression Members
Chapter 13. Shells of Revolution; Pressure Vessels; Pipes
Chapter 14. Bodies under Direct Bearing and Shear Stress
Chapter 15. Elastic Stability
Chapter 16. Dynamic and Temperature Stresses
Chapter 17. Stress Concentration
Chapter 18. Fatigue and Fracture
Chapter 19. Stresses in Fasteners and Joints
Chapter 20. Composite Materials
Chapter 21. Solid Biomechanics

This book is still no excuse for laziness. Be sure to follow up any stress analysis with journal/texbook research which may provide vital experimental vs. theoretical analysis. There are still manufacturing imperfections and departure from ideal conditions to consider. The experienced analyst knows that a little research goes a long way to prevent a lot of regret.
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4 of 4 people found the following review helpful
When I graduated with my first degree in engineering, I was pathetically broke. Married, children, etc. As a result, I sold every textbook I owned back to the University Bookstore. A mistake I knew I would eventually have to correct. After a few paychecks, I spied the Fourth Edition of this book and bought it. That was approximately 1967. It was my career saver. If I could not remember a formula, as was often the case, I could find it in this book. The Fourth Edition went missing in 2005 and I proceeded to look for it until it became an obsession. I still do not know what happened to it. Last month Amazon suggested, based on other engineering books I have purchased from the Amazon website, that I might be interested in this, the Eighth Edition. Two days later it was on my desk. The whole idea behind this book is simple enough; to have one resource that contains the facts, principles, and formulae pertaining to the strength of materials. The Eighth Edition does that in spades. The choice is yours. Either pack around 30 pounds, or more, in various textbooks and references, or have what you need in one.
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4 of 4 people found the following review helpful
on June 15, 2012
Excelent reference when you have to simplify complex calculations in materials strength, it provides a wide variety of formulas for several cases of applications
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3 of 3 people found the following review helpful
on October 17, 2012
The book is instrumental in my work as a civil engineer.
Perform structural calculations for underground precast
concrete vaults subject to truck or aircraft live loads
and surcharge soil loads. Some vaults have 15 feet of soil load on top of them. This engineer uses chapter
11 in the book flat plates subject to above loads to determine stress in top, sidewalls and bottom slab.
With the stress in the concrete plates known using Roark
then the reinforcing can be designed for diameter and
spacing. I am able to perform this design work is my masters degree was in soil mechanics with a minor in
structural mechanics. This book is a must for engineers
designing any type of structure.
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3 of 3 people found the following review helpful
on January 5, 2013
Arrived quickly and is the textbook book as described in the Amazon webpage. This was a gift for an engineer, and he was happy with the book.
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2 of 2 people found the following review helpful
on January 27, 2013
If you are an engineer, you have to have this book. It has been around for many years and each edition gets more comprehensive. If you can afford it get the hardback rather than the paper back edition. It will last longer and stays open at the page you want.
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4 of 5 people found the following review helpful
on June 1, 2012
This update of a classic engineering handbook will be an excellent addition to any technical reference set. The new content includes chapters on fatigue, fracture mechanics, bolted joints, composite materials, and bio-mechanics, making this an even more valuable resource for working engineers and stress analysts.
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1 of 1 people found the following review helpful
on November 13, 2012
The material is well presented and more extensive than my earlier editions (4th & 6th). In the few equations that I used, I did find some small differences in the material. It seems more like improvements than correcting errors.

I upgraded because I felt that I had to keep current to be able to use this on client work.

I would like to see this material set to xls formats. I do this myself for repetitive work.
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1 of 1 people found the following review helpful
on February 17, 2014
Everyone uses this book at my office. It does a good job for pipe loads, circular plate bending, beams in bending, flat plates, and torsion. I do wish it was more specific when it comes to thread stress and very short beams. Oh well, I guess thats why we have FEA.
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1 of 1 people found the following review helpful
on July 25, 2013
This is a wonderful reference tool. I use it at work all the time. I especially like how the Roark's formulas are layed out in the tables.
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