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  2. Precast concrete lifting anchor system - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete_lifting...

    The rigging arrangements can influence the applied anchor load, where statically indeterminate systems are not necessarily a design consideration, but can be used in practice. The determination of the loads through the rigging system must be a consideration whilst calculating the load resistant model, refer to the examples shown in Figure 3.

  3. Dolos - Wikipedia

    en.wikipedia.org/wiki/Dolos

    Dolosse moulds are in the foreground - Durban, South Africa. Dolosse are normally made from un-reinforced concrete, poured into a steel mould. [1]: 11 The concrete will sometimes be mixed with small steel fibers to strengthen it in the absence of reinforcement. Durban's South Pier with a line of interlocking dolosse, South Africa

  4. List of companies and cities in Africa that manufacture cement

    en.wikipedia.org/wiki/List_of_companies_and...

    Ethiopia has 20 cement factories which produce mainly OPC and PPC cement. Two other cement factories are in the pipeline. As of 2017, production capacity in Ethiopian, according to the Ethiopian Reporter, [12] has increased to 15 million tonnes per year, but local consumption is only 6 million tonnes per year.

  5. Bent (structural) - Wikipedia

    en.wikipedia.org/wiki/Bent_(structural)

    A bent in American English is a transverse rigid frame (or similar structures such as three-hinged arches). Historically, bents were a common way of making a timber frame ; they are still often used for such, and are also seen in small steel-frame buildings, where the term portal frame is more commonly used.

  6. East African Portland Cement Company - Wikipedia

    en.wikipedia.org/wiki/East_African_Portland...

    The companies that comprise East Africa Portland Cement include, but are not limited, to the following: [7] East African Portland Cement Limited – Athi River, Kenya - 100% Shareholding - The flagship company of the group. This unit engages in the production of cement.

  7. Autoclaved aerated concrete - Wikipedia

    en.wikipedia.org/wiki/Autoclaved_aerated_concrete

    Autoclaved aerated concrete (AAC) is a lightweight, prefabricated concrete building material. Developed initially in the mid-1920s, it has expanded into widespread use. Developed initially in the mid-1920s, it has expanded into widespread use.

  8. Rebar - Wikipedia

    en.wikipedia.org/wiki/Rebar

    Rebar (short for reinforcement bar or reinforcing bar), known when massed as reinforcing steel or steel reinforcement, [1] is a tension device added to concrete to form reinforced concrete and reinforced masonry structures to strengthen and aid the concrete under tension. Concrete is strong under compression, but has low tensile strength.

  9. Tilt up - Wikipedia

    en.wikipedia.org/wiki/Tilt_up

    A finished tilt-up building. Tilt-up, tilt-slab or tilt-wall is a type of building and a construction technique using concrete.Though it is a cost-effective technique with a shorter completion time, [1] poor performance in earthquakes has mandated significant seismic retrofit requirements in older buildings.