RA3

Question 1

Loads induced by the internal or external change in material properties or member geometry

Answer 1

Deformation loads

Question 2

Examples of deformation loads

Answer 2

Creep, settlement, shrinkage

Question 3

Loads created by the response of the structure to a given loading condition

Answer 3

Response loads

Question 4

Example of response loads

Answer 4

Uplift, thermal forces

Question 5

Deformation of concrete caused by loads sustained over a period of time

Answer 5

Creep

Question 6

If the load is sustained over a period of time, a creep strain, roughly _________ times the magnitude of the instantaneous strain

Answer 6

1.5 to 3

Question 7

Major factor which affects creep

Answer 7

Maturity of the concrete when the loads are applied

Question 8

Creep can cause changes in the physical length of concrete members

Answer 8

True

Question 9

Is the natural change in the volume of concrete

Answer 9

Shrinkage

Question 10

When shrinkage takes place, the concrete volume generally _________

Answer 10

Decreases

Question 11

Shrinkage is generally due to

Answer 11

Moisture loss

Question 12

Creep and shrinkage are generally due to

Answer 12

Water cement ratio and humidity of air

Question 13

The downward movement of a footing, approach pavement, or structure due to deformations of the supporting soil or piles

Answer 13

Settlement

Question 14

Are caused by fluctuations in temperature