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In 1935 W.A. de Vigier designed an adjustable steel prop which revolutionized many aspects of the construction industry including to support slab formwork, wall formwork, trench sheeting and falsework. [3] Materials from which falsework systems are manufactured have also diversified from traditional steel and timber to aluminium components.
The beams and formwork are typically set by hand and pinned, clipped, or screwed together. The advantages of a modular system are: does not require a crane to place the formwork, speed of construction with unskilled labor, formwork modules can be removed after concrete sets leaving only beams in place prior to achieving design strength.
The installation of this equipment takes place in the "third fix" segment of a construction project. It is especially important that installation of sensitive electronic equipment be installed only when a construction site is dust-controlled and prepared for what would be considered "dust free" conditions.
Formwork is used for the process of creating a mold into which concrete is poured and solidified. Traditional formwork is fabricated using wood, but it can employ steel, glass fibre, reinforced plastics and other materials. [3] Formwork for beams takes the form of a box that is supported and propped in the correct position and level.
It expanded rapidly in formwork and scaffolding under GKN ownership in the end of the 1980s. [2] In June 2000, GKN Kwikform merged with RMD (Rapid Metal Developments, established in 1948), the formwork and scaffolding unit of RM Douglas (part of Tilbury Douglas), to form RMD Kwikform. [3] [1] Tilbury Douglas renamed itself Interserve in 2001. [4]
Doka is an international producer and supplier of formwork and scaffolding used in all fields of the construction sector. It is a branch of the Umdasch Group AG based in Amstetten, Austria. Doka has a worldwide workforce of ~9,000, with 180 branches in 58 countries. [1]
A complex activity, large scale construction involves extensive multitasking. Normally, a job is managed by a project manager, and supervised by a construction manager, design engineer, construction engineer or project architect.
It is traditionally defined as the area of one chain by one furlong (66 by 660 feet), which is exactly equal to 10 square chains, 1 ⁄ 640 of a square mile, or 43,560 square feet, and approximately 4,047 m 2, or about 40% of a hectare. Acrow prop – or BS prop is a piece of construction equipment. It is a telescopic tubular steel prop, used ...