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  2. Bulkhead (partition) - Wikipedia

    en.wikipedia.org/wiki/Bulkhead_(partition)

    A bulkhead is an upright wall within the hull of a ship, within the fuselage of an airplane, or a car. Other kinds of partition elements within a ship are decks and deckheads . Etymology

  3. Ready-mix concrete - Wikipedia

    en.wikipedia.org/wiki/Ready-mix_concrete

    It uses a simple Archimedes' screw to mix (clockwise) and to lift the concrete to the delivery chute. Ready-mix concrete (RMC) is concrete that is manufactured in a batch plant, according to each specific job requirement, then delivered to the job site "ready to use". [1] There are two types with the first being the barrel truck or in–transit ...

  4. Concrete plant - Wikipedia

    en.wikipedia.org/wiki/Concrete_plant

    The global Ready Mix Concrete (RMC) market is valued at US$394.44 billion in 2017 and is expected to reach US$624.82 billion by the end of 2025, growing at a CAGR of 5.92% between 2016 and 2022. [2] A ready mix concrete plant is generally located inside the city, transporting ready-mixed concrete for projects through concrete truck mixers.

  5. Aft pressure bulkhead - Wikipedia

    en.wikipedia.org/wiki/Aft_pressure_bulkhead

    The aft pressure bulkhead is the white circular component; its web-like structure led a NASA technician to attach a large model spider to it for comedic effect. The aft pressure bulkhead or rear pressure bulkhead is the rear component of the pressure seal in all aircraft that cruise in a tropopause zone in the Earth's atmosphere. [ 1 ]

  6. Semi-finished casting products - Wikipedia

    en.wikipedia.org/wiki/Semi-finished_casting_products

    In the era of commercial wrought iron, blooms were slag-riddled iron castings poured in a bloomery before being worked into wrought iron. In the era of commercial steel, blooms are intermediate-stage pieces of steel produced by a first pass of rolling (in a blooming mill) that works the ingots down to a smaller cross-sectional area, but still greater than 36 in 2 (230 cm 2). [1]

  7. Types of concrete - Wikipedia

    en.wikipedia.org/wiki/Types_of_concrete

    Foam concrete is produced by mixing cement or fly ash, sand, water, and a synthetic aerated foam, which provides stability to the air bubbles, in contrast to air-entrained concrete which is produced incorporating specialized admixtures directly into the concrete mix. Foam concrete offers excellent thermal and acoustic insulation properties ...

  8. Steel plate construction - Wikipedia

    en.wikipedia.org/wiki/Steel_Plate_Construction

    Each assembly has two parallel steel plates joined by welded stringers or tie bars. The assemblies are then moved to the job site and placed with a crane. Finally, the space between the plate walls is filled with concrete. [1] The method provides excellent strength because the steel is on the outside, where tensile forces are often greatest.

  9. Expansion joint - Wikipedia

    en.wikipedia.org/wiki/Expansion_joint

    Building faces, concrete slabs, and pipelines expand and contract due to warming and cooling from seasonal variation, or due to other heat sources. Before expansion joint gaps were built into these structures, they would crack under the stress induced.