| 1. |
Winter Worries: Why Do Water Mains Break? |
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Opflow,
Volume 16,
Issue 2,
1990,
Page 1-4
Jodye Levy Russell,
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PDF (1329KB)
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摘要:
Unraveling the mysteries of pipe failures allows the Washington Suburban Sanitary Commission to make cost‐effective, sound engineering decisions on ways to prevent breaks. Further, by tracking break patterns and trends, the Commission will be better able to identify mains that are likely to fail, and to rehabilitate or replace them before they actually break. The article analyzes a study being conducted by the Commission on main failures which emphasizes analyzing samples of broken mains and soils from trenches of failures.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1990.tb00528.x
出版商:Wiley
年代:1990
数据来源: WILEY
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| 2. |
Compressed Air: Deadly Tool |
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Opflow,
Volume 16,
Issue 2,
1990,
Page 2-2
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PDF (93KB)
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摘要:
This article describes the correct way to change a compressed air tool.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1990.tb00530.x
出版商:Wiley
年代:1990
数据来源: WILEY
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| 3. |
Conversions Can Be as Easy as Tick‐Tack‐Toe |
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Opflow,
Volume 16,
Issue 2,
1990,
Page 3-3
Eric A. Seagren,
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PDF (67KB)
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摘要:
Presented in the article is a method called systematic dimensional analysis for converting units of measure. Basically, it's a way to cancel units of measure in fractions. A sample problem is presented, along with detailed instructions.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1990.tb00529.x
出版商:Wiley
年代:1990
数据来源: WILEY
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| 4. |
U Tool Can Be Used Two Ways on Curb Stops |
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Opflow,
Volume 16,
Issue 2,
1990,
Page 5-6
Roger Kaminsky,
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PDF (645KB)
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摘要:
Materials and instructions are included in this article describing the use of a new tool that makes removal of a curb stop pin easier and safer.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1990.tb00526.x
出版商:Wiley
年代:1990
数据来源: WILEY
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| 5. |
Plan for Compliance: Test Water, Know Options |
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Opflow,
Volume 16,
Issue 2,
1990,
Page 7-7
Trudie Lay,
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PDF (88KB)
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摘要:
The first step in complying with SDWA regulations is for small water systems to get information on the responsibilities and the deadlines for meeting them. Steps discussed are having the water tested for both regulated and unregulated contaminants, and planning on how to pay whether by setting new rates or fees to accommodate the changes or getting grants or loans.
ISSN:0149-8029
DOI:10.1002/j.1551-8701.1990.tb00527.x
出版商:Wiley
年代:1990
数据来源: WILEY
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