Search results
Results From The WOW.Com Content Network
A railroad tie, crosstie (American English), railway tie (Canadian English) or railway sleeper (Australian and British English) is a rectangular support for the rails in railroad tracks. Generally laid perpendicular to the rails, ties transfer loads to the track ballast and subgrade , hold the rails upright and keep them spaced to the correct ...
The Southern Wall is 922 feet (281 m) in length, and which the historian Josephus equates as being equal to the length of one furlong (Greek: stadion). [1] Herod's southern extension of the Temple Mount is clearly visible from the east, standing on the Mount of Olives or to a visitor standing on top of the Temple mount as a slight change in the plane of the eastern wall, the so-called ...
Typically in the form of a horizontal wire or rod, or a helical anchor, a tieback is commonly used along with other retaining systems (e.g. soldier piles, sheet piles, secant and tangent walls) to provide additional stability to cantilevered retaining walls. [1] With one end of the tieback secured to the wall, the other end is anchored to a ...
Old concrete sleepers can be used for things like retaining walls, else they might be crushed to recycle gravel and the steel reinforcing. [ 9 ] Special sleepers may be necessary on extremely sharp curves, such as the new triangle at Newmarket, New Zealand on the 1,067 mm ( 3 ft 6 in ) gauge of radius 95 m (312 ft).
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.
Comparison of a ha-ha (top) and a regular wall (bottom). Both walls prevent access, but one does not block the view looking outward. A ha-ha (French: hâ-hâ [a a] ⓘ or saut de loup [so dÉ™ lu] ⓘ), also known as a sunk fence, blind fence, ditch and fence, deer wall, or foss, is a recessed landscape design element that creates a vertical barrier (particularly on one side) while preserving ...
The part of the plate under the rail base is tapered, setting the inboard cant of the rail, typically "one in forty" (or 1.4 degrees ). The top surface of the plate has one or two shoulders that fit against the edges of the base of the rail. The double-shoulder type is currently used.
Terraced wall on La Gomera. A terraced wall, also a terrace wall, or a terraced retaining wall is a wall that is divided into sections over a slope. Such designs are useful when building on a steep grade. Terraced walls may be built with many different materials. Some craters have terraced walls, which includes complex craters. [1] [2]