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PSAD > PAST BOARD EXAM > Flashcards

PAST BOARD EXAM Flashcards

1
Q

Is the force which determines
whether the body will be in
Equilibrium or will have a varying state of motion

A

Resultant

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1
Q
  • The principle used in equations related to the deformation of axially loaded material.
  • That the stress is proportional to the strain within the elastic
    region.
A

Hooke’s Law

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2
Q

The ratio of the lateral to
the longitudinal strain is
constant.

A

Poisson’s Ratio

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3
Q

It is the constant of proportionality that defines the
linear relationship between stress and strain.

A

Young’s Modulus

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4
Q
  • A structural member that has the ratio of its unsupported height to its least lateral dimension of not less than 3 and is used primarily to
    support axial load.
A

Column

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5
Q

Retarding force acting opposite
of body in motion.

A

Kinetic Friction

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6
Q

It is the term for the value
beyond which the stress is no
longer proportional to the strain.

A

Proportional Limit

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7
Q
  • Materials which have the same composition/compression at any point.
  • Material has the same
    elastic properties in all
    directions.
A

Homogeneous

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8
Q
  • Property of a material enables it to under large permanent strains before failure.
  • Ability of a material to
    deform/ defuse in the plastic
    range without breaking.
A

Ductility

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9
Q

It is described herein stressing
high strength steel wires before
concrete hardens.

A

Pre-Tensioning

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10
Q

It is described herein stressing
high strength steel after the
concrete has been cast and has
attained sufficient strength.

A

Post-Tensioning

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11
Q

Is described herein loss of
stress that takes place with the
passage of time as concrete is
held at a constant strain.

A

Relaxation

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12
Q

Ability of a material to absorb
energy in the Elastic Range.

A

Resilience / Modulus of Resilience

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13
Q

Ability of a material to absorb
energy in the plastic range or
fracture point.

A

Toughness / Modulus of Toughness

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14
Q

Property of a material which makes it return to its original dimension when the load is removed.

A

Elasticity

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15
Q

It is the point through which
the resultant of the resistance to the applied lateral force acts.

A

Center of Rigidity

16
Q

It is the distance between the
Center of Rigidity and Center of
Mass.

A

Eccentricity

17
Q

One in which the lateral stiffness is less than 70 percent of the stiffness of the story above is called

A

Soft Story

18
Q

A Lateral Displacement of one
level relative to the level above or below is called

A

Story Drift

19
Q

A sudden drop in the shear
strength of a soil.

A

Liquefaction

20
Q

Which refers to the Rigidity of
a Structure?
- Deflection
- Reciprocal of Deflection
- Product of Stiffness and Deflection
- Reciprocal of Stiffness

A
  • Reciprocal of Deflection
21
Q

It is the point through which
the applied seismic force acts.

A

Center of Mass

22
Q

Refers to flexibility of structure.

A

Reciprocal of Stiffness

23
Q

The material has the same
composition at every point but the elastic may not be the same in all directions.
- The composite material exhibits elastic properties in one direction different from that in the perpendicular direction.

A

Orthotropic

24
Q

Besides the Epicenter, it
describes the location of the
Earthquake.

A

Focal Depth

25
Q

It is measured by a seismometer.

A

Actual Displacement or
Seismic/Earthquake Waves

26
Q

It is measured by the Richter Scale

A

Magnitude of Earthquake

27
Q

The material is subjected to
repeated cycles of stress or strain, it causes the structure to breakdown ultimately leading to fracture.

A

Fatigue

28
Q

When a material has to support a load for a long period of time, what causes it to continue to deform until a sudden fracture occurs.

A

Creep

29
Q

Condition of a material when it
breaks down and deforms permanently even due to a slight increase in stress above the elastic limit.

A

Plasticity

30
Q
  • It occurs when a building period coincides with the earthquake period.
A

Resonance

31
Q

It occurs when the structure’s
center of mass does not coincide with its center of rigidity.

A

Torsion/Torsional Shear Stress

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