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6 of 6 people found the following review helpful:
5.0 out of 5 stars
Buried Pipe Design Review comments, April 4, 2001
This review is from: Buried Pipe Design, 2nd Edition (Hardcover)
I received a copy of Dr. Moser's text "Buried Pipe Design, Second Edition". Upon a brief inspection, I was impressed with the breath, number of figures, illustrations, numerous example problems and extensive number of references at the end of each chapter. The addition of SPIDA (soil-pipe interaction design and analysis) in Chapter 5 (Rigid Pipe Products) is very valuable. The introduction to new pipe materials, particularly the discussion of profile-wall polyethylene pipe is appreciated. Finally, the introduction of information on pipe handling and trenching(Chapter 8: Pipe Installation and Trenchless Technology) is welcome.
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3 of 3 people found the following review helpful:
3.0 out of 5 stars
Hopefully the 3rd Edition corrects a lot of errors, September 26, 2008
I have a copy of the Second Edition. While the book does contain a wealth of information as the other reviews indicated, the Second Edition has a lot of errors.
There are errors in formulas, errors in example problems, inconsistencies in the use of subscripts, important tables placed in odd places (Table 3.2 on page 70), sloppy editing, and a generally casual attitude toward consistency in terms and units, such as "load" (the term most commonly used in the book to mean pounds per linear foot of pipe) sometimes used interchangeably with pressure (pounds per square foot).
Hopefully the third edition fixes these problems, and they should mail everyone who bought the second edition a list of errata.
One error in the book is in example 3.1 on page 81 which you can see by searching for "Buried Pipe Design" (second edition) on Google Books.
The equation for the Three Edge Bearing is given as
W3-edge= Wc * SF/BF
And the "D load" is given as
Wdload = Wc * SF/BF * D
but it should be
Wdload = Wc * SF/BF / D
The value of D in the example is 1.25.
The Dload equation in the example is wrong because the next two lines show the value of Dload being less than Three Edge bearing, 2074 instead of 3240, which is consistent with dividing by the diameter D, not multiplying. Also on page 78 (not visible in google books) it clearly states that "The D Load is the three-edge bearing strength divided by diameter."
Another mistake is in example 2.9 on page 59.
The buoyant unit weight should be:
yb=yd-yw/(1+e)
not:
yb=[yd-yw]/(1+e)
Again, the answer is correct but the intermediate equations are not, very confusing someone trying to learn and understand every step. It makes one wonder what other parts of the book were similarly proofread.
More errors and sloppiness are on pages 20 and 21 (visible in google books).
The subtitle of the chart in Figure 2.6 is "Values of Bd/Bc for ditch conduit LEADS TO EQUAL PROJECT conduit loads". But it should surely read "Values of Bd/Bc for ditch conduit LOADS EQUAL TO PROJECTION conduit loads" (capitalization mine)
And an error at the bottom of page 20,
"If the Calculation of Bd/Bc is:
Greater than that of Fig. 2.6, use Wd.
Less than that of Fig. 2.6, use Wc."
But the is clearly backwards, because it states just above that if the actual trench width (Bd) is:
GREATER than transition width, use Eq. 2.5 (Wc)
LESS than transition width, use Eq. 2.4 (Wd)
So, buyer beware for the Third Edition.
All in all, the errors in this book, and in other establishment pipe publications, make it rather embarrassing to be a pipe guy, and the fact that no one seems to have caught these problems suggests to me that few pipe engineers are actually crunching numbers and are instead just reading values from tables.
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5 of 6 people found the following review helpful:
5.0 out of 5 stars
Superb book, April 26, 2008
This review is from: Buried Pipe Design, 2nd Edition (Hardcover)
This is a very impressive and amazing book on what, well, what want you say, is probably not the most exciting topic in engineering. But at over 600 pages of very detailed and dense text, it's the most impressive book on the subject I've seen.
Starting with the pioneering Marston equations and approach to buried pipe, and the subsequent important work of Watkins and Spangler, the author leads you through the various scenarios for pipe design. He shows how, under certain conditions, flexible pipe can actually withstand more pressure than rigid pipe, a non-intuitive result that was very interesting.
There's considerable math in the book, but it's mostly algebra with very little actual calculus. The equations are some of the unloveliest ones I've ever seen, with exponents that go on for five or more terms, but then that's due to the messy conditions that determine pipe stresses and loads. Some simplifying assumptions can occasionally be made, such as flexible pipe being considered as responding like a simple spring, allowing already well known dynamics to be used.
The 2nd edtion appears very up to date and discusses new materials such as profile wall polyethylene, and more; new standards from ASTM, AWWA, AASHTO, and TRB; includes a new safety section for installation specs, and more design examples. (It touts these updates prominently on the book's cover).
The book is divided up into 8 main sections, which are:
1. Introduction and Overview
2. External Loads
3. Design of Gravity Flow Pipes
4. Design of Pressure Pipes
5. Rigid Pipe Products
6. Steel and Ductile Iron Flexible Pipe Products
7. Plastic Flexible Pipe Products
8. Pipe Installation and Trenchless Technology
There are so many interesting application specific topics in this book that it's impossible to discuss all of them, but I especially enjoyed the section in chapter 8 on microtunneling and pipe-jacking procedures and equipment, one of the recent methods of trenchless pipe installation. The specialized boring equipment is expensive, but it provides very precise control of conditions and can be used in many types of soils, ranging from "highly unstable to very firm soil conditions," as the author says.
I also liked how the author discusses a fair amount of soil geology and engineering where appropriate, since I don't know much about this subject, having read one brief book many years ago on this topic. He points out that, for the purposes of engineering, soils can be considered to fall into five main types: gravel, sand, silt, clay, and organic (basically peat), Of course, this is simplified (in the state of California, where I live, for example, the soils are classified by the U.S. Geological Survey into over 40 large regions and types). But for pipe construction and engineering purposes, it's usually sufficient to classify soils according to their ability to enhance the structural performance of a particular pipe in a certain soil. In situations like this, I like that the author will mention other technical publications, which in this case is the ASTM D 2321, "Standard Practice for Underground Installation of Flexible Thermoplastic Sewer Pipe."
There are also a number of nice sections dealing with the advanced pipe testing and research facility which the author apparently designed himself with interesting photos of some of the work carried out there. Many additional technical papers and documents put out by the various standards boards and agencies are mentioned for additional reading, which you can probably get for free.
Overall, this is a very impressive, detailed, and useful treatment of an important area of civil engineering. As the author points out in the introduction, the pipe infrastructure provides essential services that modern civilization couldn't really do without, and understanding how to install and maintain it is of prime importance for both citizens and municipalities.
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