Question

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 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. [7] ii. Highlight any three disadvantages associated with the above in-situ test. [3]

Answer #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. Calculate the safe bearing capacity of a 1.2 x
1.4 m rectangular footing founded...

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...

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