Question

INSTRUCTIONS: Create a spreadsheet to compute the induced normal stresses, Ay, Ay, Ay, of any arbitrary point due a point load at the ground surface using Boussinesq's Approach. A copy of the program must be submitted to the professor after the activity to verify the results.

APPLICATION: A vertical point load P is to be applied to a level ground surface. The underlying soul has the following preconstruction characteristics

Groundwater Table: 1.68 meters
   Unit weight above the ground water table: 19.10 kN/m2
    Unit weight below the ground water table: 19.48 kN/m

The total horizontal stress, y at a point is 2.4 meters below the ground surface and 0.90 meters east of the point load application must not exceed 50 kPa. Compute the maximum allowable value of P using the spreadsheet developed. Once the value of P is identified, show the detailed solution showing the total horizontal stress did not exceed the allowable stress; the value must not exceed but must be close enough to maximize its value.

RESULTS :   Maximum allowable load, P =
       Total Horizontal Stress due to load =
        Ratio of the actual and allowable stresses =
       Actual vertical stress due to geostatic stresses =
        Actual vertical stress due to induced stresses =
        Actual total vertical stress =

Answer 1