Footings and foundations as having two functions:
To transfer the live
and dead loads of the building to the soil over a large enough area so that
neither the soil nor the building will move
In areas where frost occurs, to prevent frost from moving
the building
Dead loads
Dead loads are
the weight of the building materials and the soil surrounding the foundations
Live loads
Live loads include the weight of people, furniture, snow, rain, and wind. Wind may be a
vertical force downward, a horizontal
force, or an uplift force.
A live load may also be exerted by water in the soil around
the foundations Wet soil exerts much more force than dry soil. Frozen soil
exerts much more force than wet soil.
Soil Pressure on Foundation Walls :-
The
function of footing and foundation systems varies with location. Perimeter foundations
have to resist the lateral thrust of soil outside the foundation wall. Interior
foundations and footings under columns, for example
No comments:
Post a Comment