Depth of Foundation :
Minimum depth of foundation is given by: H=P/W(1-Sinᶲ/1+Sinᶲ)
Ranking formula applicable to loose soils.
Where H= Depth of foundation in m Below ground level.
P= Safe permissible pressure on base in kg/sq.m
W= Weight of soil in kg/cu.m
ᶲ = Angle of response of soil material.
for tall structure such as chimneys and towers 3/4th of safe load om the soil should be taken and the depth h increased by 1/3 .
foundations are generally taken down to about 90 to 120 Cm for main walls 45 to 60 Cm for partition walls and 30 cm for boundary walls in ordinary soil 2 to 3 story building weight . But foundation must be taken down to a firm soil and below weathering effects . when part of a footing is in weaker soil , that part should be take down deeper and separated , or measures adopted for equal distribution of pressures according to the bearing capacity if the respective soils.
Minimum depth of foundation is given by: H=P/W(1-Sinᶲ/1+Sinᶲ)
Ranking formula applicable to loose soils.
Where H= Depth of foundation in m Below ground level.
P= Safe permissible pressure on base in kg/sq.m
W= Weight of soil in kg/cu.m
ᶲ = Angle of response of soil material.
for tall structure such as chimneys and towers 3/4th of safe load om the soil should be taken and the depth h increased by 1/3 .
foundations are generally taken down to about 90 to 120 Cm for main walls 45 to 60 Cm for partition walls and 30 cm for boundary walls in ordinary soil 2 to 3 story building weight . But foundation must be taken down to a firm soil and below weathering effects . when part of a footing is in weaker soil , that part should be take down deeper and separated , or measures adopted for equal distribution of pressures according to the bearing capacity if the respective soils.
