What are the factors on which the net ultimate bearing capacity of purely cohesive soil depends?
The net ultimate bearing capacity of a purely cohesive soil having an angle of internal friction zero, is independent of the dimensions of footing like width and depth.
Give the values of \(N_{c}, N_{q}\) and \(N_{𝜸}\) for clayey soil
For clayey soil, \(N_{c}\) = 5.7, \(N_{q}\) = 1 and \(N_{𝜸}\) = 0.
Give the formula for calculating the bearing capacity of strip footing.
As per Terzaghi, the bearing capacity of a strip footing is given as ; \(q_u=cN_c+qN_q+0.5\gamma N\gamma\).
What are shallow and deep foundations?
When the depth of the foundation is less than or equal to the width, it is called shallow foundation. (\(\frac{D_f}{B}\le1\).
And when \(\frac{D_f}{B}>15\), the foundation is termed as deep foundation.
Give the formula for settlement calculation as per the Plate-Load Test.
\(\left.\left(\mathrm{s}_{\mathrm{f}}\right)=\mathrm{s}_{\mathrm{p}}\left[\left\{\mathrm{B}_{\mathrm{f}}\left(\mathrm{B}_{\mathrm{p}}+0.3\right)\right\} /\left\{\mathrm{B}_{\mathrm{p}}\left(\mathrm{B}_{\mathrm{f}}+0.3\right)\right\}\right]\right]^{2}\)