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Headwall and corrie lake Cwm Idwal. In physical geography and geology, the headwall of a glacial cirque is its highest cliff.The term has been more broadly used to describe similar geomorphic features of non-glacial origin consisting of a concave depression with convergent slopes typically of 65 percent or greater forming the upper end of a drainage valley.
Bulkheads in a ship serve several purposes: increase the structural rigidity of the vessel, divide functional areas into rooms and; create watertight compartments that can contain water in the case of a hull breach or other leak.
A A-grade Also aid climbing grade. The technical difficulty grading system for aid climbing (both for "original" and an adapted version for "new wave"), which goes: A0, A1, A2, A3, A4, A5 and up to A6 (for "new wave"). See C-grade. Abalakov thread Abalakov thread Also V-thread. A type of anchor used in abseiling especially in winter and in ice climbing. ABD Also assisted braking device. A term ...
The highest cliff is often called a headwall. The fourth side forms the lip, threshold or sill, [3] the side at which the glacier flowed away from the cirque. Many glacial cirques contain tarns dammed by either till (debris) or a bedrock threshold. When enough snow accumulates, it can flow out the opening of the bowl and form valley glaciers ...
Culvert with secure headwall in Bromsgrove, England Stone culvert in Haapsalu, Estonia Steel culvert with a plunge pool below A multiple culvert assembly in Italy Precast concrete box culvert Large box culvert on Rio Monterroso. A culvert is a structure that channels water past an obstacle or to a subterranean waterway.
A randkluft (from the German for marginal cleft/crevasse) or rimaye (from the same French IPA:) is the headwall gap between a glacier or snowfield and the adjacent rock face at the back of the cirque [1] or, more loosely, between the rock face and the side of the glacier. In French, the word rimaye covers both notions of randkluft and bergschrund.
This example of multiple structures includes a massive seawall and riprap revetment. A bulkhead is a retaining wall, such as a bulkhead within a ship or a watershed retaining wall.
A retaining wall is designed to hold in place a mass of earth or the like, such as the edge of a terrace or excavation. The structure is constructed to resist the lateral pressure of soil when there is a desired change in ground elevation that exceeds the angle of repose of the soil.