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Operational Method for the Assessment Of Existing Structures


Quiz Questions

1.Based on proof loading, one may draw conclusions with respect to:
The bearing capacity of the tested member under the test load condition
Other members and load conditions
The behavior of the system
All of the above
2. The level of reliability required ensuring acceptable safety and Serviceability is:
Target reliability level
Structural safety
Serviceability
Reliability differentiation
3.Total period of time during which the execution and use of a construction works takes place is:
Durability
Life Cycle
Remaining Working Life
Design Situation
4.A set of concentrated or distributed forces acting on a structure is:
Direct action
Indirect action
5.Action that causes significant acceleration to a structure or a structural element is:
Static
Dynamic
6. Operational Method for the Assessment Of Existing Structures 1
In the picture above, a test setup is shown
Ultrasonic Pulse Velocity
Violet
Rebound
None of the above
7.Which of the following is not a way to measure concrete resistivity?
Core under the structure
Directly on the surface of the structure
On cores drilled from the structure
Using embedded sensors
8.The arrow in the picture below points at:
Operational Method for the Assessment Of Existing Structures 2
Reinforcing bar
Steel bar
Metal Connector
None of the above
9.The four-probe method can be used for:
Geophysical prospecting
Concrete
None of the above
Both of the above
10.Thermographic surveys are __________ and non-invasive.
Time consuming
Speedy
11.The antenna is the key component in the radar system
Data Logger
Control Unit
Antenna
None of the above
12.The aim of dynamic testing is not to detect:
Natural periods and stiffness
modes of vibration
The amplitude of the vibrations
Static Characteristics
13.Fibre optic sensor technology is __________ invasive
Extremely
Minimally
14.The equivalent frame approach looks very simple and it can be adopted to analyze the structural behaviour both for __________ actions,
Vertical
Horizontal
Both of the above
15.Asymmetry or skewness and kurtosis or peakedness (the extent to which a frequency distribution is concentrated about the mean) are used ____________ frequently than the central tendency and dispersion measures.
Less
More
Equally
16.An existing building requires structural reassessment when:
Its reliability is inadequate, also due to misuse or human errors
The structure is modified and/or enlarged
The structure has been damaged
All of the above
17.In the first half of the 20th century, a big improvement was achieved introducing the prestressing techniques, to ________ the load-bearing capacity of the structure.
Decrease
Increase
18.Cracks to ________________ compressive principal stresses indicate crushing of concrete.
Parallel
Perpendicular
Under
Above
19.Timber degradation is a continuous process induced both by:
Abiotic Attacks
Biotic Attacks
Both of the above
20.Assessment of existing structures is an urgent issue of a great economic significance in most countries around the world as more than ______ of all construction activities concern existing buildings.
10%
20%
35%
50%