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2. Sanitary manhole - Wikipedia

   en.wikipedia.org/wiki/Sanitary_manhole

   The heights of this section vary depending on the depths of the manholes. Near the top is the cone section where it reduces from the size of the chamber to the size of the cover. Chimney section, also known as shaft, is a straight and narrow section that sits on top of the cone section but below the cover. The last is the cover section. [14 ...

3. Chimney - Wikipedia

   en.wikipedia.org/wiki/Chimney

   A chimney cowl or wind directional cap is a helmet-shaped chimney cap that rotates to align with the wind and prevent a downdraft of smoke and wind down the chimney. An H-style cap is a chimney top constructed from chimney pipes shaped like the letter H. It is an age-old method of regulating draft in situations where prevailing winds or ...

4. Chimney sweep - Wikipedia

   en.wikipedia.org/wiki/Chimney_sweep

   A chimney sweep in Wexford, Ireland in 1850. A chimney sweep is a person who inspects then clears soot and creosote from chimneys. The chimney uses the pressure difference caused by a hot column of gas to create a draught and draw air over the hot coals or wood enabling continued combustion. Chimneys may be straight or contain many changes of ...

5. Benchmark (surveying) - Wikipedia

   en.wikipedia.org/wiki/Benchmark_(surveying)

   An Ordnance Survey cut mark in the UK Occasionally a non-vertical face, and a slightly different mark, was used. The term benchmark, bench mark, or survey benchmark originates from the chiseled horizontal marks that surveyors made in stone structures, into which an angle iron could be placed to form a "bench" for a leveling rod, thus ensuring that a leveling rod could be accurately ...

6. Chimney Rock (Idaho) - Wikipedia

   en.wikipedia.org/wiki/Chimney_Rock_(Idaho)

   Chimney Rock is a distinctive landmark and popular rock-climbing destination in the southern Selkirk Mountains. [ 1 ] [ 5 ] The mountain is situated six miles (9.7 km) east of Priest Lake on land managed by Idaho Panhandle National Forests . [ 5 ]

7. Chimney Sweeps Islands - Wikipedia

   en.wikipedia.org/wiki/Chimney_Sweeps_Islands

   The islands are owned by the New York City Department of Parks and Recreation, which acquired them in 1939 from the Chimney Sweeps Islands Corporation, a private group that used the islands for recreation, [1] and are now a part of Pelham Bay Park. [2] There are two local legends about the origin of the islands' name.