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  2. Marcus' method - Wikipedia

    en.wikipedia.org/wiki/Marcus'_method

    Marcus's method is a structural analysis used in the design of reinforced concrete slabs.The method was developed by Henri Marcus and described in 1938 in Die Theorie elastischer Gewebe und ihre Anwendung auf die Berechnung biegsamer Platten. [1]

  3. Creep and shrinkage of concrete - Wikipedia

    en.wikipedia.org/wiki/Creep_and_shrinkage_of...

    Toggle the table of contents ... but has at present the strongest theoretical foundation and fits best the full ... factor (e.g., 1.0 for a slab, 1.15 for a ...

  4. Seismic analysis - Wikipedia

    en.wikipedia.org/wiki/Seismic_analysis

    The applicability of this method is extended in many building codes by applying factors to account for higher buildings with some higher modes, and for low levels of twisting. To account for effects due to "yielding" of the structure, many codes apply modification factors that reduce the design forces (e.g. force reduction factors).

  5. Seismic retrofit - Wikipedia

    en.wikipedia.org/wiki/Seismic_retrofit

    Seismic retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes.With better understanding of seismic demand on structures and with recent experiences with large earthquakes near urban centers, the need of seismic retrofitting is well acknowledged.

  6. Concrete cone failure - Wikipedia

    en.wikipedia.org/wiki/Concrete_cone_failure

    The model is based on fracture mechanics theory and takes into account the size effect, particularly for the factor which differentiates from expected from the first model. In the case of concrete tensile failure with increasing member size, the failure load increases less than the available failure surface; that means the nominal stress at ...

  7. Waffle slab foundation - Wikipedia

    en.wikipedia.org/wiki/Waffle_slab_foundation

    Waffle slab foundations adhere to International Building Code requirements. By 2008, most states put into effect the changes adopted in the 2006 IBC and, in regards to foundations, the on-grade mat foundation has become a more attractive design because, as an engineered system, it already accommodates the 2008 design recommendations, and required no major modifications to bring it into compliance.

  8. When should you refinance your mortgage? - AOL

    www.aol.com/finance/when-to-refinance-mortgage...

    Upfront costs. Refinancing comes with closing costs, which can cost you upward of 6% of the loan amount. Do the math to see if you can afford the refinance costs.

  9. Properties of concrete - Wikipedia

    en.wikipedia.org/wiki/Properties_of_concrete

    Standardized form factors are 6" by 12" or 4" by 8" cylindrical samples, with some laboratories opting to utilize cubic samples. These samples are compressed to failure. Tensile strength tests are conducted either by three-point bending of a prismatic beam specimen or by compression along the sides of a standard cylindrical specimen.