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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. Trimmer (construction) - Wikipedia

    en.wikipedia.org/wiki/Trimmer_(construction)

    In light-frame construction, a trimmer is a timber or metal beam (joist) used to create an opening around a stairwell, skylight, chimney, and the like. Trimmers are installed parallel to the primary floor or ceiling joists and support headers , which run perpendicular to the primary joists.

  4. Truss - Wikipedia

    en.wikipedia.org/wiki/Truss

    This type of truss is seen in a framed roof consisting of rafters and a ceiling joist, [13] and in other mechanical structures such as bicycles and aircraft. Because of the stability of this shape and the methods of analysis used to calculate the forces within it, a truss composed entirely of triangles is known as a simple truss. [ 14 ]

  5. Waffle slab - Wikipedia

    en.wikipedia.org/wiki/Waffle_slab

    Waffle slabs are preferred for spans greater than 40 feet (12 m), because, for a given mass of concrete, they are much stronger than flat slabs, flat slabs with drop panels, two-way slabs, one-way slabs, and one-way joist slabs. [2] Section of a waffle slab including beam, ribs, and column head

  6. Building insulation material - Wikipedia

    en.wikipedia.org/wiki/Building_insulation_material

    It can be used as internal insulation : between studs, joists or ceiling rafters, under timber floors to reduce sound transmittance, against masonry walls or externally : using a rain screen cladding or roofing, or directly plastered/rendered, [24] over timber rafters or studs or masonry structures as external insulation to reduce thermal ...

  7. Exterior insulation finishing system - Wikipedia

    en.wikipedia.org/wiki/Exterior_insulation...

    Exterior insulation and finish system (EIFS) is a general class of non-load bearing building cladding systems that provides exterior walls with an insulated, water-resistant, finished surface in an integrated composite material system. EIFS has been in use since the 1960s in North America and was first used on masonry buildings.

  8. Joist - Wikipedia

    en.wikipedia.org/wiki/Joist

    A double floor is a floor framed with joists supported by larger timbers.. In traditional timber framing there may be a single set of joists which carry both a floor and ceiling called a single floor (single joist floor, single framed floor) or two sets of joists, one carrying the floor and another carrying the ceiling called a double floor (double framed floor).

  9. Rastra - Wikipedia

    en.wikipedia.org/wiki/Rastra

    It is one of the earliest such products, first patented in 1965 in Austria. Rastra is in production since 1972, and is composed of concrete and Thastyron. Thastyron is a mixture of plastic foam and cementitious binder that is composed of eighty-five percent recycled post consumer polystyrene waste that is molded into blocks and panels.