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The first expanded polystyrene ICF Wall forms were developed in the late 1960s with the expiration of the original patent and the advent of modern foam plastics by BASF. [citation needed] Canadian contractor Werner Gregori filed the first patent for a foam concrete form in 1966 with a block "measuring 16 inches high by 48 inches long with a tongue-and-groove interlock, metal ties, and a waffle ...
A concrete slab is a common structural element of modern buildings, consisting of a flat, horizontal surface made of cast concrete. Steel- reinforced slabs, typically between 100 and 500 mm thick, are most often used to construct floors and ceilings, while thinner mud slabs may be used for exterior paving ( see below ).
A finished tilt-up building. Tilt-up, tilt-slab or tilt-wall is a type of building and a construction technique using concrete.Though it is a cost-effective technique with a shorter completion time, [1] poor performance in earthquakes has mandated significant seismic retrofit requirements in older buildings.
In the United Kingdom many stiles were built under legal compulsion (see Rights of way in the United Kingdom).Recent changes in UK government policy towards farming have encouraged upland landowners to make access more available to the public, and this has seen an increase in the number of stiles and an improvement in their overall condition.
Step streets consist of a staircase of stone or concrete steps, often with a handrail on posts down the center, and sometimes lined with trees. Examples can be found in hilly urban areas. Step streets fell out of popularity with urban designers as the use of the automobile increased in cities.
A stepped gable, crow-stepped gable, or corbie step [1] is a stairstep type of design at the top of the triangular gable-end of a building. [ 1 ] [ 2 ] The top of the parapet wall projects above the roofline and the top of the brick or stone wall is stacked in a step pattern above the roof as a decoration and as a convenient way to finish the ...
A sidewalk (North American English) [1] [2] [3] or pavement (British English) is a path along the side of a road. Usually constructed of concrete, pavers, brick, stone, or asphalt, it is designed for pedestrians. A sidewalk is normally higher than the roadway, and separated from it by a curb.
Post-and-lintel construction is one of four ancient structural methods of building, the others being the corbel, arch-and-vault, and truss. [ 1 ] A noteworthy example of a trabeated system is in Volubilis , from the Roman era, where one side of the Decumanus Maximus is lined with trabeated elements, while the opposite side of the roadway is ...