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  2. Insulating concrete form - Wikipedia

    en.wikipedia.org/wiki/Insulating_concrete_form

    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 ...

  3. List of commercially available roofing materials - Wikipedia

    en.wikipedia.org/wiki/List_of_commercially...

    Concrete roofing is composed of concrete reinforced with fibers of some sort. Structural concrete can also be used for flat roof constructions. There are three main categories, precast/prestressed, cast-in-place and shell. There are many types of precast/prestressed concrete roofing. The following are the most common types. [8]

  4. Wimpey no-fines house - Wikipedia

    en.wikipedia.org/wiki/Wimpey_no-fines_house

    The Wimpey No-fines House was a construction method and series of house designs produced by the George Wimpey company and intended for mass-production of social housing for families, developed under the Ministry of Works post-World War II Emergency Factory Made programme. "No-fines" refers to the type of concrete used – concrete with no fine ...

  5. Waffle slab - Wikipedia

    en.wikipedia.org/wiki/Waffle_slab

    A waffle slab is flat on top, while joists create a grid like surface on the bottom. The grid is formed by the removal of molds after the concrete sets. This structure was designed to be more solid when used on longer spans and with heavier loads. [3]

  6. Domestic roof construction - Wikipedia

    en.wikipedia.org/wiki/Domestic_roof_construction

    Section view through a house roof drawing showing names for parts of the structure. [clarification needed] (UK and Australia). Ctrs. means centers, a typical line to which carpenters layout framing. Domestic roof construction is the framing and roof covering which is found on most detached houses in cold and temperate climates. [1]

  7. Rastra - Wikipedia

    en.wikipedia.org/wiki/Rastra

    Rastra is a registered tradename for a particular insulating concrete form (ICF) construction system, Rastra created the name Insulating COMPOUND Concrete Form (ICCF), used to make walls for buildings. It is one of the earliest such products, first patented in 1965 in Austria.