An existing foundation which supports a vertical vessel is to be utilized to support a new, heavier vessel.
The foundation was constructed approximately 55 years ago (late 1960's).
In general the soil is Silty Clay.
In general, does the long term loading under the existing foundation lead to an increase in allowable bearing pressure?
More recent Borings (approximately 10 years ago) near the existing foundation (outside of the load affected zone) indicate an allowable NET bearing pressure of 2,500 psf.
Is it reasonable to expect a 7% and 12% increase in allowable bearing pressure due to sustained load cases and transient load cases respectively?
The Geotech Engineer has been consulted on this matter but offers no opinion or judgement with regard to allowable bearing pressure increases.
If 7 ft. of overburden soil was placed on silty clay soil for site improvement purposes, would that not improve the properties and the soil bearing capacity of the soil?
The foundation was constructed approximately 55 years ago (late 1960's).
In general the soil is Silty Clay.
In general, does the long term loading under the existing foundation lead to an increase in allowable bearing pressure?
More recent Borings (approximately 10 years ago) near the existing foundation (outside of the load affected zone) indicate an allowable NET bearing pressure of 2,500 psf.
Is it reasonable to expect a 7% and 12% increase in allowable bearing pressure due to sustained load cases and transient load cases respectively?
The Geotech Engineer has been consulted on this matter but offers no opinion or judgement with regard to allowable bearing pressure increases.
If 7 ft. of overburden soil was placed on silty clay soil for site improvement purposes, would that not improve the properties and the soil bearing capacity of the soil?
