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2. Process duct work - Wikipedia

   en.wikipedia.org/wiki/Process_Duct_Work

   Round duct support rings are spaced, often at three diameters, or as require at up to about 50 ft centers (14 m). At this spacing the main support rings are designed for the sum of suction pressure stresses & support bending moments. Round ductwork allowable compressive stress is = 662 /(d/t) +339 * Fy (tubular steel structures, chapter 2).

3. Cable tray - Wikipedia

   en.wikipedia.org/wiki/Cable_tray

   To maintain support of cables at changes of elevation or direction of a tray, a large number of specialized cable tray fittings are made compatible with each style and manufacturer. Horizontal elbows change direction of a tray in the same plane as the bottom of the tray and are made in 30, 45 and 90 degree forms; inside and outside elbows are ...

4. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   A duct bank will allow replacement of damaged cables between buildings or additional power and communications circuits to be added, without the expense of re-excavation of a trench. While metal conduit is occasionally used for burial, usually PVC , polyethylene or polystyrene plastics are now used due to lower cost, easier installation, and ...

5. Pipe support - Wikipedia

   en.wikipedia.org/wiki/Pipe_support

   A pipe support or pipe hanger is a designed element that transfer the load from a pipe to the supporting structures. The load includes the weight of the pipe proper, the content that the pipe carries, all the pipe fittings attached to pipe, and the pipe covering such as insulation. The four main functions of a pipe support are to anchor, guide ...

6. Weather to keep planes carrying protest banners away from ...

   www.aol.com/sports/weather-keep-planes-carrying...

   For premium support please call: 800-290-4726 more ways to reach us. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Mail. Sign in. Subscriptions ...

7. Factbox-Donald Trump's lawsuits against media companies - AOL

   www.aol.com/news/factbox-donald-trumps-lawsuits...

   U.S. President-elect Donald Trump is making good on his threats to go after the media in court, with several recent lawsuits seeking damages against major publishers over what he describes as ...