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2. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

3. Ohio Moline Plow Building - Wikipedia

   en.wikipedia.org/wiki/Ohio_Moline_Plow_Building

   The Ohio Moline Plow Building is a historic building in the Arena District in Downtown Columbus, Ohio.It was listed on the National Register of Historic Places in 1999. The building was built in 1913 as an office, warehouse, and sales space for the Ohio Moline Plow Company, part of the Moline Plow Company based in Illinois.

4. ARCOS LLC - Wikipedia

   en.wikipedia.org/wiki/ARCOS_LLC

   ARCOS is an American software company based in Columbus, Ohio.The company produces automated crew callout and resource management software system for finding, assembling and tracking repair crews for electric and gas utility companies.

5. AOL

   search.aol.com

   The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

6. Shipping container architecture - Wikipedia

   en.wikipedia.org/wiki/Shipping_container...

   In the case of a 20 feet (6.1 m)-long container, the roof is built and tested only to withstand a 300 kilograms (660 lb) load, applied to an area of 61 cm by 30.5 cm (2 ft by 1 ft) in the weakest part of the roof. [4] Companies inspect containers, and condemn them if they present cracked welds, twisted frames, or pin holes, among other faults.

7. Roof cleaning - Wikipedia

   en.wikipedia.org/wiki/Roof_cleaning

   One safe and effective means to clean a roof is an electric agricultural sprayer system, as originally developed in Florida, USA in the early 1990s. [6] The equipment is used to apply a cleaning solution (typically containing bleach) that kills the algae, bacteria, mold, mildew, moss, fungus and other organic organisms growing on the roof.