Question 1

The thickness of a 600mm wide strip foundation supporting a 250mm wide loadbearing wall should be

Accepted Answer

A)   145mm
B)   150mm
C)   160mm
D)   175mm
E)   200mmF) A) and D)
G) A) and B) D

Question 2

The loadbearing capacity of a soil is mainly influenced by its

Accepted Answer

A)   Density
B)   Porosity
C)   Angularity
D)   Toxicity
E)   PlasticityF) A) and B)
G) B) and E)

Question 3

A short bored pile foundation works by transferring the building load

Accepted Answer

A)   To a good loadbearing strata
B)   To a poor loadbearing strata
C)   To the water table
D)   Over a wide area of the site
E)   From a non-cohesive to a cohesive soilF) A) and B)
G) A) and C) A

Question 4

The width of a strip foundation supporting a load of 35 KN/m on a soil with a loadbearing capacity of 120 KN/m2 and having a factor of safety of 1.5, should be

Accepted Answer

A)   194mm
B)   292mm
C)   343mm
D)   437mm
E)   515mmF) A) and D)
G) All of the above

Question 5

A raft foundation is generally used when

Accepted Answer

A)   A strip foundation would be too narrow
B)   A short bored pile foundation would be too shallow
C)   The soil is too heavy to excavate
D)   The soil is too light to excavate
E)   The soil bearing capacity is very lowF) All of the above
G) A) and B)

Question 6

Trees growing close to buildings can be a problem because the roots

Accepted Answer

A)   Can grow into the foundations
B)   Can destroy the foundations by taking the nutrients from the concrete
C)   Take water from the soil around the foundations
D)   Produce chemicals that corrode the concrete in foundations
E)   Cause the concrete in the foundations to expandF) A) and B)
G) B) and E)

Question 7

A wide strip foundation can be prevented from failing under load by adding

Accepted Answer

A)   Steel reinforcement in the bottom
B)   Steel reinforcement in the top
C)   A greater amount of sand to the concrete mix
D)   A greater amount of water to the concrete mix
E)   A greater amount of lime to the concrete mixF) C) and D)
G) A) and D)

Question 8

The primary function of a foundation is to provide

Accepted Answer

A)   A base for the external wall
B)   A means for the building loads to be transferred to the ground
C)   Stability to the ground
D)   An entry point for services to the building
E)   A partition between different types of soilF) B) and C)
G) B) and D) B

Question 9

Strip foundations are generally placed a minimum of 750mm below ground level because they are:

Accepted Answer

A)   Less affected by climatic conditions at this level
B)   Less affected by atmospheric conditions at this level
C)   Less affected by biological conditions at this level
D)   Less affected by chemical conditions at this level
E)   Less affected by environmental conditions at this levelF) B) and C)
G) A) and E)

Question 10

Settlement in soils is mainly caused by

Accepted Answer

A)   A chemical reaction between the soil particles
B)   An upward expansion of soil due to heating
C)   A downward compression of soil due to loading
D)   A lateral sliding of soil due to freezing
E)   A swelling of soil due to water pressureF) B) and C)
G) C) and D)

Exam 5: Foundations

The thickness of a 600mm wide strip foundation supporting a 250mm wide loadbearing wall should be

Correct Answer
verified
D

The loadbearing capacity of a soil is mainly influenced by its

Correct Answer
verified

A short bored pile foundation works by transferring the building load

Correct Answer
verified
A

The width of a strip foundation supporting a load of 35 KN/m on a soil with a loadbearing capacity of 120 KN/m² and having a factor of safety of 1.5, should be

Correct Answer
verified

A raft foundation is generally used when

Correct Answer
verified

Trees growing close to buildings can be a problem because the roots

Correct Answer
verified

A wide strip foundation can be prevented from failing under load by adding

Correct Answer
verified

The primary function of a foundation is to provide

Correct Answer
verified
B

Strip foundations are generally placed a minimum of 750mm below ground level because they are:

Correct Answer
verified

Settlement in soils is mainly caused by

Correct Answer
verified

Exam 5: Foundations

The thickness of a 600mm wide strip foundation supporting a 250mm wide loadbearing wall should be

Correct AnswerverifiedD

The loadbearing capacity of a soil is mainly influenced by its

Correct AnswerverifiedShow Answer

A short bored pile foundation works by transferring the building load

Correct AnswerverifiedA

The width of a strip foundation supporting a load of 35 KN/m on a soil with a loadbearing capacity of 120 KN/m2 and having a factor of safety of 1.5, should be

Correct AnswerverifiedShow Answer

A raft foundation is generally used when

Correct AnswerverifiedShow Answer

Trees growing close to buildings can be a problem because the roots

Correct AnswerverifiedShow Answer

A wide strip foundation can be prevented from failing under load by adding

Correct AnswerverifiedShow Answer

The primary function of a foundation is to provide

Correct AnswerverifiedB

Strip foundations are generally placed a minimum of 750mm below ground level because they are:

Correct AnswerverifiedShow Answer

Settlement in soils is mainly caused by

Correct AnswerverifiedShow Answer

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified
A

The width of a strip foundation supporting a load of 35 KN/m on a soil with a loadbearing capacity of 120 KN/m² and having a factor of safety of 1.5, should be

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified