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terms > DESIGN > Flashcards

DESIGN Flashcards

1
Q

Center of mass and center of rigidity does not coincide

A

Torsional Shear Stress

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2
Q

Building which has a floor which is less than 70% as stiff as the floor above it, or less than 80% as the average stiffness of the three floors.

A

soft storey

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3
Q

lateral displacement of one level relative to the other level above or below

A

storey drift

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4
Q

The point which the resultant of the resistance to the applied lateral force acts

A

center of rigidity

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5
Q

The point on a structure through which the applied seismic force acts

A

center of mass

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6
Q

Refers to the flexibility of a structure

A

reciprocal of stifness

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7
Q

material condition that causes it to deform permanently even due to a slight increase of stress

A

Yielding

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8
Q

Fracture caused when a material is subjected to repeated cycles of stress or strain

A

fatigue

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9
Q

When a material is overloaded over a long period, it causes to deform continuously until fracture

A

creep

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10
Q

When the structure’s period earthquake period

A

resonance

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11
Q

it is nothing more than a column driven into the soil to support a structure transferring building loads to a deeper and stronger layer of soil or rock

A

Pile

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12
Q

Applied seismic force acts

A

Center of mass

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13
Q

Cross-section is same at any location across the long axis of the beam

A

Prismatic

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14
Q

Force needed to stretch or compress

A

Spring constant

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15
Q

Perpendicular distance between incident and emergent ray

A

Lateral displacement

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16
Q

Where maximum amplitude oscillation occurs

A

Resonance

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17
Q

Vertical members bearing horizontal force are located on another axis

A

Out of plane offset

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18
Q

Aimed to account for any unforeseen factor that may attribute to the torsional response

A

Accidental Eccentricity

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19
Q

The number of waves that pass through a point in one second

A

Frequency

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20
Q

Amount of time it takes on wave to cycle to pass the given point

A

Period

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21
Q

Sudden drop of shear strength

A

Liquefaction

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22
Q

Instrument that measures 2 record of details of earthquake (duration and force)

A

Seismograph

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23
Q

Record produced by seismograph

A

Seismogram

24
Q

Measures the energy released at the source of the earthquake

A

Magnitude

25
Q

Helps to disperse the building weight from the roof

A

Bearing walls

26
Q

Refers to the rigidity of a structure

A

Reciprocal of Deflection

27
Q

A fracture plane in the earth’s crust which relative displacement occurs

A

Fault line

28
Q

Angle of formation referenced from the horizontal plane

A

Dip angle

29
Q

Ability of material to deform in the plastic range without breaking

A

Ductility

30
Q

A point of structure where heavy winds and seismic activity acts

A

Shearwall

31
Q

A point of structure where the resultant vertical force acts

A

Center of mass

32
Q

A point of structure where the resultant lateral force acts

A

Center of rigidity

33
Q

Distance between center of mass and center of rigidity

A

eccentricity

34
Q

Ability of a material to deform or hammered or pressed without breaking

A

Malleability

35
Q

Measured by seismometer

A

Ground Displacement

36
Q

Measure the strength of shaking produced at a certain location (damage)

A

Intensity

37
Q

Depth of focus

A

Focal Depth

38
Q

A point where the earthquake begins

A

Focus

39
Q

A point on earth’s surface directly above the hypercenter/focus

A

Epicenter

40
Q

The point where an earthquake or an underground explosion originates

A

Hypocenter

41
Q

Branch of science concerned with earthquakes

A

Seismology

42
Q

Have the same material properties in all directions every given point

A

Isotropic Material

43
Q

Material composition is the same but mechanical properties are different

A

Orthotropic material

44
Q

Materials of uniform composition as well as mechanical properties

A

Homogenous material

45
Q

Limit maximum stress it can withstand before permanently deformed

A

Elastic material

46
Q

Deformation of a structural component due to load

A

Buckling

47
Q

A stress where a material begins to deform plastically

A

Yielding

48
Q

Promote the metal harder and stronger due to plastic deformation

A

Strain Hardening

49
Q

Return to its initial shape and size after removing the force

A

Elasticity

50
Q

Measure of a tensile strength of concrete beams or slabs

A

Rupture

51
Q

Permanent deformation without rupture

A

Plasticity

52
Q

Amount of force required to displaced a building by certain amount

A

Stiffness

53
Q

Ability of a material to absorb energy in the plastic range without breaking

A

toughness

54
Q

Ability of a material to absorb energy in the elastic range

A

Resilience

55
Q

4 or 5 times its mean dimension

A

elongation

56
Q

Parallel Springs

A

K=K1+K2

57
Q

Series Springs

A

1/K=1/K1+1/K2

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