Soils, Earthwork,Foundation ch.2

Settlement is:

• a recoverable reduction in soil volume due to a loss of water or air

• A non-recoverable reduction in soil volume due to a loss of water or air

• none of the above

• both a and b

To size any foundation element it is necessary to note two things:

• foundation material strength

• inspection

• applied loading

• Soil capacity

If the total load applied to the footing is 15 kips, and the allowable bearing capacity is 1500 psf, the required area of the footing is:

• 10.6 sq. ft.

• 13.3 sq. ft.

• 1.33 sq. ft.

• 10 Sq. ft.

A foundation’s primary function is to:

• Transfer and distribute loads from the structure to the supporting earth without failure or significant damaging movements

• direct surface water around the structure

• provide a habitable surface and protect the interior of the building from moisture and water penetrations

Soft soils that have high water contents (select one):

• have high bearing capacity

• Have water that may be squeezed out of the soil resulting in settlement

• are highly unlikely to settle

Downhill creep (select one):

• can produce results more dramatic than a landslide

• is not a problem for deep foundations such as piles

• May cause long term damage to structures

• can be stopped by planting trees

The allowable bearing capacities that can be utilized for shallow footings in soil and rock range (select one):

• From less than 1000 psf up to many thousands of psf

• is not important since they are not covered in the codes

• is usually calculated without considering a factor of safety

Rocks can have a wide variety of safe bearing capacities (select one):

• Ranging from 5,000 to over 80,000 psf

• ranging up to 20,500 psf

• of less than 1,000 psf

Design and construction of foundations, to be rationally performed (select one):

• must be based on information found on topographical maps

• Cannot be performed without some knowledge of the properties of the soil or rock that supports the foundation

• can be performed by relying on contractors' opinions

Table 1607.1 in the 2015 IBC lists (select one):

• Live loads for use in design of buildings

• dead loads for use in design of buildings

• lateral earth pressures

• minimum concrete strength