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This structural system was employed with reinforced concrete piers to support large loads at minimal costs. [40] This was further refined in 1959 by replacing the concrete piers and open-web joist with a steel portal frame that was employed extensively in the 1960s and 1970s. [40] [1] Block B was a timber school building with timber floor trusses.
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The buildings are timber-framed and weatherboard-clad structures, highset on concrete piers, with corrugated metal-clad hipped (Blocks D and E) and Dutch-gable (Blocks C and B) roofs. [ 1 ] The buildings were constructed in three phases between 1927 and 1933 (Block C, centre; Block B, southeast and Block E, southwest; and Block D, northwest ...
A wave-dissipating concrete block is a naturally or manually interlocking concrete structure designed and employed to minimize the effects of wave action upon shores and shoreline structures, such as quays and jetties. One of the earliest designs is the Tetrapod, invented in 1950.
Rather, bents are simply cross-sectional templates of structural members, i.e., rafters, joists, posts, pilings, etc., that repeat on parallel planes along the length of the structure. The term bent is not restricted to any particular material. Bents may be formed of wooden piles, timber framing, [2] steel framing, or even concrete. [3]
The bridge is a concrete, barrel vaulted deck arch bridge. Its single arch spans 31 feet (9.4 m) across Silver Creek. The parapet railings are constructed of solid concrete and have five rectangular recesses on the inside and outside faces. The bridge currently carries the unpaved Burt Road in a rural, wooded area of Ransom Township.
It consists of two Parker truss spans, set on concrete abutments and a central concrete pier. The trusses are fabricated out of rolled steel I-beams, and the main deck is steel covered by asphalt. [4] The bridge location was the site of a ferry as early as 1780. [2]
Until the advent of concrete and the use of cast iron and then steel, bridges were made of masonry. Roman bridges were sturdy, semicircular, and rested on thick piers, with a width equal to about half the span of the vault. [2] It was only from 1750, with Jean-Rodolphe Perronet, that the thickness of the piers could be reduced. While it was ...
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