PM Engineer articles from April 2007

PM Engineer archives from April 2007

Harsh words about carriers article.(Letters)(Letter to the editor)
April 1, 2007... After viewing your February 2007 cover "Fixture Carriers That Meet The Harshest Design Requirements," I was looking forward to an objective article, highlighting current fixture carrier specification issues, as well as recent advances in...

NFSA seeks passage of Fire Sprinkler Incentive Act of 2007.(News)
April 1, 2007... The National Fire Sprinkler Association (NFSA), the longest-tenured fire sprinkler advocacy organization in the U.S., is continuing its four-year effort to pass legislation that will provide landmark fire protection laws that are destined to...

Viega breaks ground for new facility.(News)
April 1, 2007... On March 14, Viega LLC broke ground for its new 439,000-square-foot production, logistics and office complex in McPherson, KS. Since its North American introduction in 1999 and the acquisition of Vanguard Piping Systems in 2005, Viega has grown...

Sloan Valve Co.
April 1, 2007... * Sloan Valve Co. and C.J. Erickson Plumbing Co. have partnered to supply the Chicago Center for Green Technology (CCGT) water-efficient plumbing fixtures and installation labor to support the center's goal of helping professionals and...

Plumbing-Heating-Cooling Contractors--National Association (PHCC) Educational Foundation.
April 1, 2007... * This year more than $100,000 in scholarships will be awarded through the Plumbing-Heating-Cooling Contractors--National Association (PHCC) Educational Foundation. These scholarships are made possible by generous sponsors who recognize the...

Vote yes for residential sprinklers: next month, perhaps the most important decision in the history of codes will be finalized.(Codes)
April 1, 2007... I kidded with a good friend of mine that he went to the dark side after graduating from college--he became an attorney! Every time we would get together, I would make fun of his legal profession, while he told me how noble it was to be an...

Flow reversal in primary/secondary systems: when flow reversal occurs, the heat transfer from the secondary circuit is mostly unaffected, as are the other secondary loads in the system.(Hydronics Notebook)
April 1, 2007... Our industry has used primary/ secondary piping systems for years. Most engineers currently designing hydronic systems are familiar with how these systems operate, as well as how they are designed. Still, based on discussions I've had, it's...

Problems, problems: note to students: being an engineer is like having a 7 a.m. class and a late afternoon lab every day until retirement.(Fire Protection)
April 1, 2007... Q. Our local fire official is requiring that we supply some type of hanger support for 1" drops to a suspended ceiling in our building because those drops exceed 12 feet in length. To substantiate his ruling, he has cited NFPA 13, Section...

Active pressure control devices for building drainage and vent systems: when used together, air admittance valves and the positive air pressure attenuator device can effectively balance safety, efficiency and functionality.(Cover story)
April 1, 2007... [ILLUSTRATION OMITTED] There are few real mysteries remaining about the mechanisms at play in building drainage and vent systems. This has been well understood from the beginning of modern sanitary engineering, which dates back to the end...

Sprinkler piping materials: the requirements for sprinkler pipe have changed significantly over the past 30 years.
April 1, 2007... Up until the mid-1970s, sprinkler pipe was predominantly Schedule 40 black steel pipe. Then an upstart company named Allied Tube and Conduit decided to shake up the piping business. At the time, Allied only produced electrical conduit and...

Chilled drinking water systems: selection and sizing of fixtures, piping and insulation are the key design factors to focus on.
April 1, 2007... [ILLUSTRATION OMITTED] Drinking water systems provide the fixtures and low temperature water used only for drinking purposes. This article describes the fixtures, design criteria and the piping distribution system used to supply and...

Top 10 products of 2006.
April 1, 2007... Here are the products run in PME throughout the year 2006 that received the most attention from our readers, according to the number of reader inquiries we received after they appeared. In case you missed the opportunity the first time around,...