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  2. Ultrasonic pulse velocity test - Wikipedia

    en.wikipedia.org/wiki/Ultrasonic_pulse_velocity_test

    Note transmitter on one side of the column and receiver on opposite. An ultrasonic pulse velocity test is an in-situ , nondestructive test to check the quality of concrete and natural rocks. In this test, the strength and quality of concrete or rock is assessed by measuring the velocity of an ultrasonic pulse passing through a concrete ...

  3. Reinforced concrete column - Wikipedia

    en.wikipedia.org/wiki/Reinforced_Concrete_Column

    A reinforced concrete column is a structural member designed to carry ... To give a conservative estimate and build redundancies into the final structural ...

  4. Schmidt hammer - Wikipedia

    en.wikipedia.org/wiki/Schmidt_hammer

    The test hammer hits the concrete at a defined energy. Its rebound is dependent on the hardness of the concrete and is measured by the test equipment. By reference to a conversion chart, the rebound value can be used to determine the concrete's compressive strength. When conducting the test, the hammer should be held at right angles to the ...

  5. Compressive strength - Wikipedia

    en.wikipedia.org/wiki/Compressive_strength

    Cubic or cylindrical samples of concrete are tested under a compression testing machine to measure this value. Test requirements vary by country based on their differing design codes. Use of a Compressometer is common. As per Indian codes, compressive strength of concrete is defined as: Field cured concrete in cubic steel molds (Greece)

  6. Reinforced concrete - Wikipedia

    en.wikipedia.org/wiki/Reinforced_concrete

    Concrete spalling from the ceiling of an office unit (interior) in Singapore, possibly due to rebar corrosion. Reinforced concrete can fail due to inadequate strength, leading to mechanical failure, or due to a reduction in its durability. Corrosion and freeze/thaw cycles may damage poorly designed or constructed reinforced concrete.

  7. Eurocode 2: Design of concrete structures - Wikipedia

    en.wikipedia.org/wiki/Eurocode_2:_Design_of...

    Logo of Eurocode 2 An example of a concrete structure. In the Eurocode series of European standards (EN) related to construction, Eurocode 2: Design of concrete structures (abbreviated EN 1992 or, informally, EC 2) specifies technical rules for the design of concrete, reinforced concrete and prestressed concrete structures, using the limit state design philosophy.

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  9. Waffle slab - Wikipedia

    en.wikipedia.org/wiki/Waffle_slab

    The height of the ribs and beams should be 1 ⁄ 25 of the span between columns. [3] The width of the solid area around the column should be 1 ⁄ 8 of the span between columns. Its height should be the same as the ribs. [3] Diagram showing waffle slab rib and Beam Heights rule of thumb formulas.