Bearing Capacity and Types of Failure PPT Flashcards

1
Q

In order to avoid a bearing failure of the footing, in which the soil beneath the footing moves downward and outward from under the footing, __________. This limitation is provided by ensuring that the __________.

A
  1. The service load stress under the footing must be limited.
  2. Service load stress, qs, is less than or equal to an allowable bearing capacity, qa.
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2
Q

Computation of Ultimate Load

A

qu = Pu / Af

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3
Q

This type of failure is also referred to as Punching Shear Failure

A

Diagonal Tension Failure

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4
Q

The footing fails due to the formation of inclined cracks around the perimeter of the column. Test results have indicated that the critical section can be taken at d/2 from the face of the column.

A

Diagonal Tension Failure

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5
Q

Two Principal Kinds of Failure for Foundations

A
  1. Structural Failure of the Foundation - bending, shear and bearing
  2. Bearing Capacity Failure of the Supporting Soils - shear
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6
Q

3 Types of Failure of Footings

A
  1. Diagonal Tension Failure
  2. One-way Shear Failure
  3. Flexure Failure
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7
Q

The footing fails due to the formation of inclined cracks that intercept that bottom of the slab at a distance d from the face of the column.

A

One way Failure

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8
Q

For footings carrying columns with steel base plates, it is measured from a line halfway between the face of the column and the edge of the base plate.

A

Distance d

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