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RAF aircrew with one of their Bristol Beaufighters on a PSP airstrip at Biferno, Italy, August 1944. Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and ...
A plank used in the repair of a ship. A plank is timber that is flat, elongated, and rectangular with parallel faces that are higher and longer than wide. [1] Used primarily in carpentry, planks are critical in the construction of ships, houses, bridges, and many other structures. [2] Planks also serve as supports to form shelves and tables.
A set of boards for duplicate bridge typically contains 32 boards and sometimes as many as 36. The actual number of boards used in a particular session depends on the type of tournament, the number of tables, and the choice of movement used. Often some of the higher numbered boards (e.g. 25 to 36) are not needed. [12]
Roman corvus boarding plank, educated guess Boarding-bridge diagram, educated guess. The corvus (Latin for "crow" or "raven") was a Roman ship mounted boarding ramp or drawbridge for naval boarding, first introduced during the First Punic War in sea battles against Carthage.
A type of trussed plank frame barn in Sweden is representative of some types in America, the lack of heavy timbers in the framing give it the name plank frame barn. Plank-framed barns [22] are different than a plank-framed house. Plank framed barns developed in the American Mid-West, such as the patente in 1876 (#185,690) by William Morris and ...
The Sioux Narrows Bridge is a bridge on Highway 71 at Sioux Narrows, Ontario, which spans the Sioux Narrows strait between Regina Bay and Whitefish Bay on Lake of the Woods. [ 1 ] Built in 1936 as an all-wooden truss bridge made of Douglas fir timber treated with creosote , [ 2 ] it was at 210 feet (64 m) the longest single-span wooden bridge ...
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The most ancient form of timber bridge is the log bridge, created by felling a tree over a gap needing to be crossed. [ citation needed ] Among the oldest timber bridges is the Holzbrücke Rapperswil-Hurden crossing upper Lake Zürich in Switzerland; the prehistoric timber piles discovered to the west of the Seedamm date back to 1523 B.C.
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