- Paperback: 256 pages
- Publisher: ITDG Publishing; New edition edition (15 Dec. 1980)
- Language: English
- ISBN-10: 0946688508
- ISBN-13: 978-0946688500
- Product Dimensions: 14.7 x 1.5 x 20.6 cm
- Amazon Bestsellers Rank: 1,655,167 in Books (See Top 100 in Books)
A Handbook of Gravity-flow Water Systems Paperback – 15 Dec 1980
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Most Helpful Customer Reviews on Amazon.com (beta)
Regardless, there is quite a bit of useful information, especially for engineers. I wish I had stumbled across this book three years ago, before teaching a course on environmental engineering for the developing world. Our course could have benefited from the simple yet compelling approach used to design the main line. Thorough coverage of demand estimation, break pressure tanks, and removing trapped air from the pipeline are included. Detailed drawings, clear explanations of components like control valves, and extended example problems make this a valuable book. The appendix also contains some theory of pipe flow, including the energy equation and the hydraulic grade line.
Two small drawbacks are that there is not an example of a branched system (or a looped system) despite some discussion, and that the head loss tables for high-density polyethylene pipe have values that do not agree with the design examples. I suspect that updated values were added to the appendix after the examples in the text had been completed.
For designing a distribution network, I recommend a primitive but efficient software from the 80's developed by the World Bank and called "Branch". It selects pipe diameters and calculates the cheapest design from a price list of tubes you provide. Neat! [...]
For topographic surveying, I used a theodolite, which is much faster and preciser than an Abney level. The skills needed are much harder to teach though... A cheap transit will do the job of a professional theodolite for a fraction of the price. [...]
Although a bible for its time and used in many projects, it has failed to be updated to the new times and challenges. It leaves out very important matters like community participation, selection of materials, GPS, Google Earth or the use of spreadsheets or simple computer programs for that matter
I was excited when the second edition was released only to discover that only minor adjustments were included.