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The approximately 1900-foot-long retaining wall along Ocean Boulevard was constructed around 1939 by the Works Progress Administration to protect the neighborhood from high tide. [3] The neighborhood was severely impacted by the 1939 California tropical storm .
The first geosynthetic-reinforced soil walls were built in France in 1970 and 1971. [5] Geosynthetic-reinforced walls have been in use in the United States since 1974. Bell and Steward (1977) describe some of these early applications, which were primarily geotextile wrapped-face walls supporting logging roads in the northwestern United States. [6]
In 1997, the equity firm Code, Hennessy & Simmons III, L.P. purchased a majority interest in the company. They re-branded it as Beacon Roofing Supply, Inc. [ 8 ] In 1998, Beacon, in an attempt to acquire successful distributors, purchased its first regional brand, Quality Roofing Supply, a Pennsylvania based roofing distributor.
A basement wall is thus one kind of retaining wall; however, the term usually refers to a cantilever retaining wall, which is a freestanding structure without lateral support at its top. [2] These are cantilevered from a footing and rise above the grade on one side to retain a higher level grade on the opposite side.
A bulkhead is a retaining wall, such as a bulkhead within a ship or a watershed retaining wall. It may also be used in mines to contain flooding. Coastal bulkheads are most often referred to as seawalls , bulkheading, or riprap revetments .
Return wing walls: used where banks are high and hard or firm. Their top width is 1.5 m and face is vertical and back battered 1 in 4. [ 2 ] Scour can be a problem for wing walls and abutments both, as the water in the stream erodes the supporting soil.
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