PVC has an impressive record of long-term durability. When water utility managers and engineering firms were surveyed in a study sponsored by the American Water Works Association Research Foundation (AWWARF), they cited corrosion resistance, longevity and durability as their top reasons for choosing PVC. When these same water supply professionals were asked to rank PVC against the other common types of pressure pipes for life expectancy, PVC ranked first. [Source: Moser, A.P.

Yes, PVC pipe can withstand vacuum pressures. According to research conducted by Dr. R.K. Watkins at Utah State University, vacuum pressures cannot collapse an underground PVC pipe that is properly encased in a soil envelope and exposed to normal service temperatures. In fact, quick calculations show that even under conditions of elevated operating temperatures of 100oF, the pressure required to collapse most PVC pipe is greater than atmospheric. See similar questions...

Gasketed-joint PVC provides many advantages over other types of joining systems. The following is a brief summary: Watertight Joints: Gasketed-joint PVC water and sewer pipe joints are virtually leak-free, enabling them to easily pass post-installation air tests or leakage tests. Installation Considerations: Ease in installation is another advantage gasketed-joint PVC offers. See similar questions...

In order to accurately quantify the effects of UV radiation on PVC pipe, Uni-Bell members conducted a two-year study in the late 1970s at various outdoor locations in the United States and Canada. In this study, PVC pipe samples were placed on horizontal exposure racks and placed so that they received continual exposure to the sun. At various points throughout the study, tests to evaluate mechanical properties were performed on the portion of the pipes that received the maximum UV exposure. See similar questions...

Allowable depth of bury can be calculated based on the allowable deflection as described above. Uni-Bell member products have been installed successfully at depths of fifty feet or more. The following tables are provided as quick reference. See similar questions...

In order to understand all the differences between various pipe specifications, a more detailed review of the specifications should be conducted. Uni-Bell staff stands ready to discuss any specific questions you may have, but provides the following “quick reference” for your use: See similar questions...

A jib's life expectancy depends on the environment, the severity and frequency of use , the ambient temperature, and other factors. For this reason, we cannot provide a value for life expectancy. Contrx brand cranes are designed for daily use, and with the exception of routine maintenance, should provide years of trouble free operation. See similar questions...

Because the BMC is a performance-bred dog they are normally very healthy, with a long life span of around twelve to sixteen years. Many BMCs have lived to be 15 and 16 years old. Mark Morrison's Sir Beau Regard is 13 (I think) and he just retired him from competition hunts but still pleasure hunts him. See similar questions...

The only answer is that no one knows for sure. It may be as little as three years but it may be 10 - 15 years - or who knows it may be the full span if you have a successful bmt. What you do know for sure is that you do not have an unlimited life span and it is sensible to consider the implications on your life. In a way we are lucky that we have time to prepare - a car accident or other tragedy leaves no planning time at all. See similar questions...

If your CDI and hypothyroidism are fully treated, they should not interfere with your fertility. They also should not affect your life expectancy nor have any effect on other medications that you may be taking. However, the disease that apparently caused your CDI and hypothyroidism could affect any or all of these things depending on what kind of tumor it was, how it was treated, and so forth. I have CDI and am having problems getting pregnant; I do not have normal menstrual cycles. See similar questions...

This is a more complicated question than it seems, because how you answer it depends on how you look at the statistics. First, looking at how long adults with DS live: the last major published article to look at this was in California in 1991, and the results in that study may not be the same for any other place in the world. But that study looked at over 12,000 people with DS and found that major medical problems were not a consistent predictor of mortality, which was a common belief. See similar questions...

Dependable Carrier products are among the longest lasting heating and cooling products available. For your specific equipment, there are many variables that affect life expectancy, and of course, the regularity of routine maintenance. Contact your local Carrier dealer for insight into the remaining lifespan of your system. See similar questions...

ASTM F679: Standard Specification for Poly(Vinyl Chloride) (PVC) Large-Diameter Plastic Gravity Sewer Pipe and Fittings ASTM F789: Standard Specifications for Type PS-46 and Type PS-115 Poly(Vinyl Chloride) (PVC) Plastic Gravity Flow Sewer Pipe and Fittings ASTM F794: Standard Specification for Poly(Vinyl Chloride) (PVC) Profile Gravity Sewer Pipe and Fittings Based on Controlled Inside Diameter ASTM F949: Standard Specification for Poly(Vinyl Chloride) (PVC) Corrugated Sewer Pipe With a Smooth . See similar questions...

Tarp life expectancy is determined by frequency and type of use. Careful use, common sense, and following recommended procedures on tags and labels will extend the life of the tarp. With care, a Twistarp will last at least one year and many have been in service for several years. See similar questions...

There is no way to accurately predict how long people with cystic fibrosis will live, as many different factors may affect a person’s health. Severity of disease and time of diagnosis are two such factors. Many people have a mild case of CF, while others can have moderate or severe cases. See similar questions...

It is expected that most children with CdLS will live well into adulthood; however, each child must be evaluated for life-threatening conditions such as heart defects, untreated gastroesophageal reflux, and bowel abnormalities. See similar questions...

years plus-if the building is properly designed and the Marble Face Polished Ground Face units are installed correctly. See similar questions...

Most lines of GSDs will live to between 10-13 years of age. 11-12 years is probably a very reasonable expectation. A GSD becomes "middle-aged" between 5-7 years old, and is generally considered "geriatric" at about 10. Their food intake and exercise and nutrition needs may change over this period of time. They may begin to develop stiffness in their joints (much like people do as they get older). See similar questions...