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An unreinforced masonry building (or UMB, URM building) is a type of building where load bearing walls, non-load bearing walls or other structures, such as chimneys, are made of brick, cinderblock, tiles, adobe or other masonry material that is not braced by reinforcing material, such as rebar in a concrete or cinderblock. [1]
A pallet of "8-inch" concrete blocks An interior wall of painted concrete blocks Concrete masonry blocks A building constructed with concrete masonry blocks. A concrete block, also known as a cinder block in North American English, breeze block in British English, or concrete masonry unit (CMU), or by various other terms, is a standard-size rectangular block used in building construction.
Actions against developers for using or failing to test blocks were scarcer. [16] [17] Cassidy Brothers, one of the companies that produced the blocks, was issued with an enforcement notice in October 2021 in relation to land in Cranford, County Donegal. [18] The company was ordered to shut a concrete batching plant and storage yard. [18]
Concrete dust released by building demolition and natural disasters can be a major source of dangerous air pollution. The presence of some substances in concrete, including useful and unwanted additives, can cause health concerns due to toxicity and (usually naturally occurring) radioactivity. [4]
Many houses built in South Florida since Hurricane Andrew are cinder block masonry construction reinforced with concrete pillars, hurricane-strapped roof trusses, and codes requirements for adhesives and types of roofing.
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Reema construction is a system of building using prefabricated reinforced concrete panels which came into being in the late 1940s and was still in use well into the 1960s. Buildings made in this way are currently (2008) very hard to obtain finance on in the UK, primarily due to potential problems with similar large panel system construction ...
Ecology blocks are manufactured using concrete left over from other construction processes. A cross-section of an eco-block typically measures 2 feet (61 cm) square, with block lengths ranging from 3 feet (91 cm) to 6 feet (180 cm). One block weighs between 1,800 pounds (820 kg) and 4,000 pounds (1,800 kg). [1]