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Structural Design > Refresher Notes > Flashcards

Refresher Notes Flashcards

0
Q

Minimum number of stories recommended to be provided with at least 3 approved recording accelerographs.

A

14

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1
Q

The procedures and limitations for the design of structures shall be determined by the following factors.

A

Zoning, site characteristics occupancy, configuring structural system, and height

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2
Q

Maintenance and service of accelerographs shall be provided by the _____.

A

Owner

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3
Q

Who shall be responsible for keeping the actual live load below the allowable limits and shall be liable for any failure on the structure due to overloading.

A

Occupant of the building

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4
Q

The period of continuous application of a given load or the aggregate of periods of intermittent application of the same load.

A

Load duration

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5
Q

Minimum area in square meters a member supports which the design live load may be reduced.

A

14 sqm.

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6
Q

Minimum height of any wall requiring structural design to resist loads onto which they are subjected.

A

1.50 mts.

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7
Q

Maximum deflection of a brittle finished wall subjected to a load of 250 Pascal applied perpendicular to said wall.

A

1/240 of wall span

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8
Q

Maximum deflection of a flexible finished wall subjected to a load of 250 Pascal applied perpendicular to said wall.

A

1/120 of wall span

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9
Q

Maximum floor area for a low-cost housing unit.

A

60 sqm.

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10
Q

The level at which the earthquake motions are considered to be imparted to the structure or the level at which the structure, as a dynamic vibrator, is supported.

A

Base

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11
Q

A member or an element provided to transfer lateral forces from portion of a structure to vertical elements of the lateral force resisting system.

A

Collector

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12
Q

A horizontal or nearly horizontal system acting to transmit lateral forces to the vertical resisting elements, it includes horizontal bracing system.

A

Diaphragm

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13
Q

The total designed lateral force or shear at the base of a structure.

A

Base Shear, V

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14
Q

An element at edge of opening or at perimeters of shear walls of diaphragm.

A

Boundary Element

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15
Q

An essentially vertical truss system. acting to transmit lateral forces to the vertical resisting elements, it includes horizontal bracing system.

A

Braced Frame

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16
Q

An essentially complete space frame which provides supports for gravity loads.

A

Building Frame System

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17
Q

A combination of a Special or Intermediate Moment Resisting Space Frame and Shear walls or Braced Frames.

A

Dual System

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18
Q

That form of Braced frame where at least one end of each brace intersects a beam at a point away from the column girder joint.

A

Eccentric Braced Frame (EBF)

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19
Q

The entire assemblage at the intersection of the members.

A

Joint

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20
Q

The horizontal member in a frame system, a beam.

A

Girder

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21
Q

An element of a diaphragm parallel to the applied load which collects and transfers diaphragm shear to vertical resisting elements or distributes loads within the diaphragm.

A

Diaphragm Strut

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22
Q

The boundary element of a diaphragm or a shear wall which is assumed to take the axial stresses analogous to the flanges of a beam.

A

Diaphragm Chord

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23
Q

Those structures which are necessary for emergency post-earthquake operations.

A

Essential facilities

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24
Q

The part of the structural system assigned to resist lateral forces.

A

Lateral Force Resisting System

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25
Q

Moment resisting Space Frame not meeting special detailing requirements for ductile behavior.

A

Ordinary Moment Resisting Space Frame

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26
Q

The displacement of one level relative to the level above or below.

A

Story Drift

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27
Q

The usable capacity of a structure or its members to resist loads within the deformation limits prescribed in this document.

A

Strength

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28
Q

The lower rigid portion of a structure having a vertical combination of structural system.

A

Platform

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29
Q

Horizontal truss system that serves the same function as a diaphragm.

A

Horizontal Bracing System

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30
Q

An assemblage of framing members designed to support gravity loads within the deformation limits prescribed in this document.

A

Structure

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31
Q

A structural system without complete vertical load carrying space frame providing support for gravity loads. Resistance to lateral load is provided by shear walls or braced frames.

A

Bearing Wall System

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32
Q

A structural system with essentially complete space frame providing support for gravity loads. Resistance to lateral load is provided by shear walls or braced frames.

A

Building Frame System

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33
Q

A structural system with an essentially complete space frame providing support for gravity loads. Moment resisting frames provide resistance to lateral load primarily by flexural action of members.

A

Moment Resisting Frame System

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34
Q

Is one in which the story strength is less than 80% of that of the story above.

A

Weak Story

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35
Q

An elastic or inelastic dynamic analysis in which a mathematical model of the structure is subjected to a ground motion time history. The structure’s time-dependent dynamic response to these motion is obtained through numerical integration of its equations of motions.

A

Time History Analysis

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36
Q

The effects on the structure due to earthquake motions acting in directions other than parallel to the direction of resistance under consideration.

A

Orthogonal Effect

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37
Q

The secondary effect on shears and moments of frame members included by the vertical loads acting on the laterally displaced building frame.

A

P-delta Effect

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38
Q

Material other than water , aggregate, or hydraulic cement, used as an ingredient of concrete and added to concrete before or during its mixing to modify its properties.

A

Admixture

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39
Q

Concrete that does not conform to definition of reinforced concrete.

A

Plain Concrete

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40
Q

Upright compression member with a ratio of unsupported height to average least lateral dimension of less than three.

A

Pedestal

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41
Q

Ratio of normal stress to corresponding strain for tensile or compressive stresses below proportional limit of material.

A

Modulus of Elasticity

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42
Q

In prestressed concrete, temporary force exerted by device that introduces tension into prestressing tendons.

A

Jacking Force

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43
Q

Length of embedded reinforcement provided beyond a critical section.

A

Embedment Length

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44
Q

Stress remaining in prestressing tendons after all losses have occurred, excluding effects of dead load and superimposed loads.

A

Effective Prestress

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45
Q

Length of embedded reinforcement required to develop the design strength of reinforcement at a critical section.

A

Development Length

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46
Q

Friction resulting from bends or curves in the specified prestressing tendon profile.

A

Curvature Friction

47
Q

Concrete containing lightweight aggregate.

A

Structural Lightweight Concrete

48
Q

Prestressing tendon that is bonded to concrete either directly of through grouting.

A

Bonded Tendon

49
Q

ASTM A36

A

Structural Steel

50
Q

High-Yield Strength Quenched and Tempered Alloy Steel Plate, Suitable for Welding.

A

ASTM A514

51
Q

True or False, Bar larger than 32mm in diameter shall not be bundled in beams.

A

TRUE

52
Q

Minimum concrete cover for a Prestressed concrete for beams and columns for primary reinforcements.

A

40 mm

53
Q

In a material under tension or compression, the absolute value of the ratio transverse strain to the corresponding longitudinal strain.

A

Poisson’s Ratio

54
Q

In column, the ratio of its effective length to its least radius of gyration.

A

Slenderness Ratio

55
Q

A quantity which measures the resistance of the mass to being revolved about a line.

A

Torsion

56
Q

A Type of concrete floor which has no beam.

A

Flat Slab

57
Q

The tendency for one part of a beam to move vertically with respect to an adjacent part.

A

Shear

58
Q

A change in shape of material when subjected to the action of force.

A

Deformation

59
Q

The maximum value of tension, compression, or shear respectively the material sustain without failure.

A

Yielding Stress

60
Q

It means that by which a body develops internal resistance to ‘stress’.

A

Stress

61
Q

The greatest stress which a material is capable of developing without permanent deformation remaining upon the complete release of stress.

A

Allowable Stress

62
Q

Intensity of force per unit area.

A

Stress

63
Q

Loop of reinforcing bar or wire enclosing longitudinal reinforcement

A

Tie/Stirrup

64
Q

The measure of stiffness of a material.

A

Stiffness Ratio

65
Q

The failure in a base when a heavily loaded column strikes a hole through it.

A

Punching Shear

66
Q

The deformation of a structural member as a result of loads acting on it.

A

Deflection

67
Q

Nominal thickness of a timber.

A

6 inches

68
Q

The sum of forces in the orthogonal directions and the sum of all moments about any points are zero.

A

Equilibrium

69
Q

The complete records of tests conducted (slump, compression test, etc.) shall be preserved and made available for inspection during the progress of construction and after completion of the project for a period not less than.

A

2 years

70
Q

Wood board should have a thickness specification of.

A

Not less than 1”x4”

71
Q

The distance from the first to the last riser of a stair flight.

A

Run

72
Q

A high-speed rotary shaping had power tool used to make smooth cutting and curving on solid wood.

A

Portable Hand router

73
Q

The major horizontal supporting member of the floor system.

A

Girder

74
Q

Wood defects are: heart shake, cup shake, star shake and _______.

A

Knots

75
Q

Dressed lumber is referred to ______.

A

Smoothed or planed lumber

76
Q

The other kind of handsaw other than rip-cut saw.

A

Cross-cut saw

77
Q

It refers to the occupancy load which is either partially or fully in place or may not be present at all.

A

Live Load

78
Q

The distance between inflection points in the column when it breaks.

A

Effective length

79
Q

The amount of space measured in cubic units.

A

Volume

80
Q

An expansion joint of adjacent parts of a structure to permit expected movements between them.

A

Contraction Joint

81
Q

The total of all tread widths in a stair.

A

Total run

82
Q

The force adhesion per unit area of contact between two bonded surfaces.

A

Bond Stress

83
Q

A structural member spanning from truss to truss or supporting a rafter.

A

Purlin

84
Q

Size of a camber for a 25 meters steel truss.

A

Size of Dead Load Deflection

85
Q

A connector such as a welded strut, spiral bar, or short length of channel which resists horizontal shear between elements.

A

Shear Connector

86
Q

The force per unit area of cross section which tends to produce shear.

A

Shear Stress/Shearing Stress

87
Q

The law that relates the linear relationship between stresses and strains.

A

Hook’s Law

88
Q

Minimum spacing of Bolts in timber connection measured from center of bolts parallel for parallel to grain loading is equal to _____.

A

4 X diameter of bolt

89
Q

According to the provisions of the NSCP on timber connections and fastenings, the loaded edge distance for perpendicular to grain loading shall be at least _____.

A

4 X diameter of bolt

90
Q

NSCP specifies spacing between rows of bolts for perpendicular to grain loading shall be at least _______ times bolt for L/d ratio of 2.

A

2.5

91
Q

Minimum diameter of bolts to be used in timber connections and fastening accordance with NSCP specifications.

A

12 mm

92
Q

Simple solid timber columns have slenderness ratio not exceeding ______.

A

50

93
Q

Nails or spikes for which the wire gauges or lengths not set forth in the NSCP specifications shall have a required penetration of not less than _____.

A

11 diameters

94
Q

Notches in sawn lumber bending members in accordance with the NSCP specifications shall not exceed.

A

1/6 depth of member

95
Q

Notches in sawn lumber shall not be located in the ______.

A

Middle Third Span

96
Q

Notches in the top and bottom of joists shall not exceed _____.

A

1/4 the depth

97
Q

Allowable stresses for tension on pin connected members based on net area.

A

0.45 Fy

98
Q

Allowable shear stress on structural steel on the cross sectional area effective in resisting shear.

A

0.40 Fy

99
Q

For structures carrying live loads which induce impact, the assumed live load shall be increased sufficiently to provide for same, for supports or elevators the increase shall be.

A

100%

100
Q

The slenderness ratio of compression members shall not exceed _____.

A

200

101
Q

The slenderness ratio main members in tension shall not exceed _____.

A

240

102
Q

Concrete cover for pipes, conduits, and fittings shall not be less than ____ for concrete exposed to earth or weather.

A

40 mm

103
Q

Concrete cover for pipes, conduits, and fittings shall not be less than ____ for concrete not exposed to earth or weather.

A

20 mm

104
Q

Curing of concrete (other than high-early strength) shall be maintained above 10C and in moist condition for at least the first _____ days after placement.

A

7

105
Q

If concrete in structure will dry under service conditions, cores shall be air-dried for _____ days before test and shall be tested dry.

A

7

106
Q

Curing for high-early strength concrete shall be maintained above 10C and in moist condition for at least the ______ days after replacement.

A

3

107
Q

The minimum clear spacing between parallel bars in layer shall be db (diameter of bar) but not less than ______.

A

25 mm

108
Q

Standard hooks used in reinforced concrete beam shall mean

A

180 bend + 4db extension but not less than 65 mm at free end of bar.

109
Q

Standard hooks for stirrups and tie hooks 16mm bar and smaller.

A

90 bend + 6db extension at free end

110
Q

Standard hooks for stirrups and tie hooks 20-25mm bar.

A

90 bend + 12db extension at free end

111
Q

Allowable tolerance on minimum concrete cover for depths greater than 200mm.

A

-12 mm

112
Q

Allowable tolerance for longitudinal location of bends of reinforcement.

A

+- 50 mm

113
Q

Individual bars with a bundle terminated within the span of flexural members shall terminate at different points with a stagger of at least _______.

A

40db

114
Q

Clear distance between pre-tensioning tendons at each end of member shall not be less than _________ for strands.

A

3db

115
Q

Clear distance between pre-tensioning at each end of member shall not be less than _______ for wire.

A

4db

116
Q

Minimum concrete cover provided for reinforcement of cast in place against permanently exposed to earth or weather using bars larger than 36 mm.

A

75 mm

Structural Design (2 decks)

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