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REINFORCED CONCRETE DESIGN CODES & SPECIFICATIONS
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  • 問題数 50 • 11/5/2024

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    問題一覧

  • 1

    The maximum moment of a simply supported beam whose span length is L, in meter, carrying a uniformly distributed load of w in N/m is.

    wL2 / 8

  • 2

    Loads that are moveable or replaceable on structure are known as.  

    Live load

  • 3

    It is one in which the lateral stiffness is less than 70% of the stiffness of the story above it.

    Soft story

  • 4

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

    Diaphragm

  • 5

    These are inert material used in concrete which occupy more than 75% of the volume of the hardened concrete product.  

    Aggregates

  • 6

    Steel elements such as wire, cables, bars, rods or strands of wires or a bundle of such elements used in pre- stressed concrete structures are called.  

    Tendons

  • 7

    What method of pre- stressing in which tendons are tensioned before concrete is cast in place.

    Pre- tensioning

  • 8

    This refers to the substance other than aggregate, cement or water added in a small quantity normally less than 5% of the weight cement, to alter the properties of the concrete mix or hardened solid.  

    Admixtures

  • 9

    The minimum bend diameter for 10mm through 25mm bars. 

    6db

  • 10

    Bars larger than _____ mm shall not be bundles in beams.  

    36mm

  • 11

    Minimum concrete cover cast against and permanently exposed to earth.  

    75mm

  • 12

     In ultimate strength design, the strength reduction factor for shear and torsion.  

    0.85

  • 13

    The minimum one way slab thickness for a BOTH ends continuous slab is.  

    L/28

  • 14

    Deep simple span flexural members has overall depth to clear span ratio greater than. 

    0.60

  • 15

    Before commencing the excavation work, the person making the excavation shall notify in writing the owner of the adjoining building not less than ____ days before such excavation is to be made.  

    10 days

  • 16

    The maximum spacing of ties and spirals in a driven pre- cast concrete pile, center to center.

    150 mm

  • 17

    Aviation control towers fall to what type of occupancy?

    Essential facilities

  • 18

    The allowable deflection for any structural member loaded with live load only.

    L/360

  • 19

    The allowable deflection for any structural member loaded with dead load and live load only.

    L/240

  • 20

    Spacing for a lateral support for a beam shall not exceed ____ times the least width b of compression flange or face.  

    50

  • 21

    It is an isolated column of masonry or a bearing wall not bonded at the sides into associated masonry, when its horizontal dimension measured the right angles or the thickness does not exceed four times its thickness.  

    Pier

  • 22

    Method of pre- stressing in which tendons are tensioned after concrete has hardened.  

    Post-tensioning

  • 23

    A material other than aggregate, cementitious material or water, added in small quantities to the mix in order to produce some (desired) modifications, either to the properties of the mix or of the hardened product.

    Admixtures

  • 24

    A simply supported beam , L meters long, carrying a uniformly distributed load of w in N/m, produces a maximum shear force of.  

    wL/2

  • 25

    Structures that are subjected to transverse load are called.  

    Beams

  • 26

    Members that are generally vertical, subjected to compressive loads sometimes with bending moments are called. 

    Columns

  • 27

    These are referred to permanent loads or unmovable loads.  

    Dead Loads

  • 28

    Loads that change position within the span of a beam in short amount of time. These loads are often exemplified by wheel loads. 

    Moving loads

  • 29

    It is synonym to bending stress. 

    Flexural stress

  • 30

    Adherence to materials such as bricks/mortar , or piles of felt, of between felts and other elements of roof systems which use bitumen or other materials as the cementing agent. 

    Bond

  • 31

    A wall that resists horizontal forces applied in the plane of the wall.  

    Shear wall

  • 32

    If the ratio of the short direction to the long direction of a slab is less than 0.5 then the slab is.

    One- way slab

  • 33

    In ultimate strength design, the reduction factor for bending is.  

    0.9

  • 34

    The actual strain by which a concrete fail is 0.004. For safety purposes, the ACI code allows designers to use.

    0.003

  • 35

    The minimum clear cover allowed by the code for slabs, not exposed to weather is. 

    20mm

  • 36

    A Number 8(#8 steel reinforcing bar) has a diameter of.

    25mm

  • 37

    What do you call those structures that are necessary for emergency operations subsequent to a natural disaster. 

    Essential facilities

  • 38

    It is one in which the lateral stiffness is less than 70% of the stiffness of the story above or less than 80% of the average stiffness of the three stories above.  

    Soft story

  • 39

    A Structural system without a complete vertical load- carrying space frame.  

    Bearing wall system

  • 40

    The minimum reinforcing steel for Spiral Columns allowed by the ACI Code is.  

    6- 16mm diameter bars

  • 41

    The ACI Code states that “bars larger than #11 should not be bundles in beams or girders”. This means that one should not bundle the steel bars if the diameter is larger than.

    36mm

  • 42

    The steel ratio, p for spiral columns ranges from. 

    0.01- 0.08

  • 43

    The temperature bars are 0- 10mm diameter steel bars placed on top and perpendicular to the main reinforcement of.  

    One- way slab

  • 44

    Which is the correct factored load for Strength Design Method.  

    1.4DL + 1.7LL

  • 45

    It is defined as the unit strength of a material. 

    Stress

  • 46

    The stress developed when the applied load causes adjacent sections within a body to slide past each other. 

    Shearing Stress

  • 47

     It is the contact pressure developed between two bodies.  

    Bearing stress

  • 48

    The stress induced as a result od restrained deformations due to changes in temperature.

    Thermal stress

  • 49

    The actual stress in a material under a given loading.  

    Working stress

  • 50

    It is the maximum safe stress that a material can withstand.

    Allowable stress