39
The depth of foundation is usually calculated from:
- ARankine’s formula
- BNetwton’s formula
- CDe Almbert’s formula
- DGutter’s formula
Answer not set
Discussion 1
Log in or create a free account to reply and vote.
0
CCommunity
Rankine’s formula provides the guidance on the minimum depth of foundation based on bearing capacity of the soil.
$( q_u={\gamma } {D_{f}}\left( {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right)^2)$
Therefore, the depth of the foundation can be expressed as
$(D_f = \frac{q_u}{\gamma }\left( {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right)^2)$
Where, Df = minimum depth of foundation, qu= ultimate bearing capacity of the soil, γ = density of soil, $(\varphi )$ = angle of repose or internal friction of soil.
$( q_u={\gamma } {D_{f}}\left( {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right)^2)$
Therefore, the depth of the foundation can be expressed as
$(D_f = \frac{q_u}{\gamma }\left( {\frac{{1 - \sin \varphi }}{{1 + \sin \varphi }}} \right)^2)$
Where, Df = minimum depth of foundation, qu= ultimate bearing capacity of the soil, γ = density of soil, $(\varphi )$ = angle of repose or internal friction of soil.