Question

An Engineering consultant appointed on the construction of a Bridge site decided to conduct the Plate load test to get fair idea about the bearing capacity of the sub soil. The test was conducted on a circular plate of 200 mm radius at a depth of 1.20 m below the natural ground surface in pure clayey soil. The failure took place at a load of 55000N. Calculate the safe bearing capacity of a 1.2 x 1.4 m rectangular footing founded at a depth of 1.75 m in the same sub-soil. Consider the factor of safety & bulk unit weight unit of 2.25 & 19.8 kN/m3 respectively.

Answer #1

PART – 1 Q.1 An Engineering consultant
appointed on the construction of a Bridge site decided to conduct
the Plate load test to get fair idea about the bearing capacity of
the sub soil. The test was conducted on a circular plate of 200 mm
radius at a depth of 1.20 m below the natural ground surface in
pure clayey soil. The failure took place at a load of 55000N. i.
Calculate the safe bearing capacity of a 1.2 x...

Plate load test is adopted globally to determine in-situ bearing
capacity of the subsoil and considered as one of the most important
field test for any big construction project. A plate load test was
conducted on a 300 mm side square plate at a depth of 1.10 m below
the ground level in pure clayey soil for an important construction
site. Failure of the soil occurred at a load of 45 kN. A. Calculate
the safe bearing capacity of a...

A plate load test was carried out on a sand soil at the
expected foundation depth on a circular plate of 45 cm diameter.
Failure of the soil below plate occurred when the applied load on
plate reached 734 kg. If a square footing of 3 m width is going to
be constructed on the same soil and at the same testing depth, what
will be the allowable bearing capacity in kg/cm2. (Take
F.S = 3).

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