Question $5(18$ marks$)$

A shear box test has been completed on a soil. The horizontal shear proving ring factor is $2\mathrm{.}5\frac{N}{?}$ division.

$5\mathrm{.}1.$ Complete the relevant data according to the tabled results. Provide a neat table. $(8)$

$5\mathrm{.}2.$ Determine the Coulomb Failure curve for this soil and with it record the apparent angle of friction and cohesion. $(2)$

$5\mathrm{.}3.$ If the pore water pressure inside the shear box was $20$ KPa $,$ determine the effective shear stress. $(1)$

$5\mathrm{.}4.$ From the failure curve describe the nature of the soil. $(1)$

$5\mathrm{.}5.$ Provide an adequate definition of $($a$)$ cohesion and $($b$)$ angle of friction $(4)$

Geotechnical Engineering GET$260$s

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$\backslash$table$[[\backslash$table$[[$Total Vertical$],[$Load $($kg$)]],\backslash$table$[[$Total$],[$Vertical$],[$Load $($N$)]],\backslash$table$[[$Compressive$],[$Stress$],[k\frac{N}{m^2}$