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2. North American railroad signals - Wikipedia

   en.wikipedia.org/wiki/North_American_railroad...

   Signals are most commonly mounted on trackside masts about 12 to 15 feet (3.7 to 4.6 m) high to put them in the eyeline of the engineer. Signals can also be mounted on signal bridges or cantilever masts spanning multiple tracks. Signal bridges and masts typically provide at least 20 feet (6.1 m) of clearance over the top of the rail.

3. Cantilever - Wikipedia

   en.wikipedia.org/wiki/Cantilever

   The roof built over the stands at Old Trafford uses a cantilever so that no supports will block views of the field. The old (now demolished) Miami Stadium had a similar roof over the spectator area. The largest cantilevered roof in Europe is located at St James' Park in Newcastle-Upon-Tyne, the home stadium of Newcastle United F.C. [3] [4]

4. Rack railway - Wikipedia

   en.wikipedia.org/wiki/Rack_railway

   Rack railway. The Pilatus Railway is the steepest rack railway in the world, with a maximum gradient of 48% and an average gradient of 35%. A rack railway (also rack-and-pinion railway, cog railway, or cogwheel railway) is a steep grade railway with a toothed rack rail, usually between the running rails. The trains are fitted with one or more ...

5. 19-inch rack - Wikipedia

   en.wikipedia.org/wiki/19-inch_rack

   19-inch rack. A full-height rack cabinet. A 19-inch rack is a standardized frame or enclosure for mounting multiple electronic equipment modules. Each module has a front panel that is 19 inches (482.6 mm) wide. The 19 inch dimension includes the edges or ears that protrude from each side of the equipment, allowing the module to be fastened to ...

6. The Viral 12-Foot Skeleton Is Back at Home Depot—Buy ... - AOL

   www.aol.com/viral-12-foot-skeleton-back...

   In addition to Skelly Dog, Home Depot launched a limited-edition 12-foot Servo Skelly, which features lifelike head movements for added spook factor. This undead cast of skeletons is the perfect ...

7. Inside the rift that could define the future of Pennsylvania ...

   www.aol.com/news/inside-rift-could-define-future...

   NBC News spoke with 12 people familiar with the Fetterman-Shapiro relationship from different perspectives, most of whom were granted anonymity to speak candidly about a sensitive matter featuring ...