Structural January 2000 Board Exam

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  • 1/146 Questions

    A design so proportioned that the maximum stress in concrete (with strain of 0.003) and steel (with strain of Fy/Es) are reached simultaneously once the ultimate load is reached, causing them to fall simultaneously

    • BALANCED DESIGN
    • UNDERREINFORCED DESIGN
    • OVERREINFORCED DESIGN
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About This Quiz

Structural January 2000 Board Exam quiz helps mathematics, other students and other related parties to revise on geometry. The use of geometrical tools is tested in the quiz. Find out how you are fairing. All the best.

Structural Engineering Quizzes & Trivia

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  • 2. 

    A coefficient of elasticity of a material expressing the ratio between a unit stress aSd the   corresponding unit strain caused by the stress, as derived from Hooke’s law and represented by the slope of he straight line portion of the stress- strain line diagram.

    • MODULUS OF ELASTICITY

    • MODULUS OF RIGIDITY

    • MOMENT MODULUS

    Correct Answer
    A. MODULUS OF ELASTICITY
    Explanation
    The explanation for the correct answer, "MODULUS OF ELASTICITY," is that it refers to the coefficient of elasticity of a material. This coefficient expresses the ratio between a unit stress and the corresponding unit strain caused by the stress, as derived from Hooke's law. It is represented by the slope of the straight line portion of the stress-strain line diagram. Therefore, the correct answer is "MODULUS OF ELASTICITY."

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  • 3. 

    WEIGHT OF CONCRETE

    • 1000 kg/ m3

    • 7850 kg/ m3

    • 2400 kg/ m3

    Correct Answer
    A. 2400 kg/ m3
    Explanation
    The given answer, 2400 kg/m3, represents the weight of concrete. Concrete is a composite material made up of cement, water, and aggregates such as sand and gravel. The weight of concrete can vary depending on the specific composition and density of the aggregates used. In this case, the density of the concrete is given as 2400 kg/m3, indicating that for every cubic meter of concrete, it weighs 2400 kilograms.

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  • 4. 

    What is not included  in the computation of reinforced concrete load

    • Slab

    • Floor finish

    • Beam

    • Column

    Correct Answer
    A. Floor finish
    Explanation
    Floor finish is not included in the computation of reinforced concrete load. The load calculation for reinforced concrete takes into account the weight of the structural elements such as the slab, beam, and column. However, the floor finish, which refers to the materials used to cover the surface of the floor, such as tiles or carpet, is not considered in the load calculation as it is not a structural element and does not contribute significantly to the overall load on the structure.

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  • 5. 

    A design in which the steel reinforcement is more than what is required for balanced condition

    • OVERREINFORCED DESIGN

    • BALANCED DESIGN

    • UNDERREINFORCED DESIGN

    Correct Answer
    A. OVERREINFORCED DESIGN
    Explanation
    An overreinforced design refers to a design in which the steel reinforcement used is more than what is required for a balanced condition. This means that the amount of steel reinforcement exceeds the amount needed to resist the maximum load that the structure will experience. This design approach is often used to provide additional strength and durability to the structure, but it can also result in higher construction costs.

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  • 6. 

    A design in which the steel reinforcement is lesser than what is required for balanced conditioned. Failure under this condition is ductile and will give warning to the user of  thee structure to decrease the load

    • UNDERREINFORCED DESIGN

    • OVERREINFORCED DESIGN

    • BALANCED DESIGN

    Correct Answer
    A. UNDERREINFORCED DESIGN
    Explanation
    An underreinforced design refers to a design in which the steel reinforcement is less than what is required for balanced conditions. In this design, failure under excessive load is ductile and will give warning signs to the user of the structure. This means that the structure will show visible signs of distress, such as cracking or deformation, before ultimately failing.

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  • 7. 

    The stress induced as a result of restrained deformation due to changes in temperature

    • Rupture stress

    • Thermal stress

    • Yield stress

    • Creep

    Correct Answer
    A. Thermal stress
    Explanation
    Thermal stress refers to the stress induced in a material due to changes in temperature. When a material is restrained from expanding or contracting freely as it heats up or cools down, it experiences thermal stress. This stress can lead to deformation or even fracture of the material. Therefore, the correct answer is thermal stress.

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  • 8. 

    1.  A horizontal or nearly horizontal system, including horizontal bracing systems, that act to transmit lateral forces to the vertical resisting elements. (NSCP Sec. 2.2.2)

    • A. diaphragm

    • B. Collector

    • C. braced frame

    • D. platform

    Correct Answer
    A. A. diaphragm
    Explanation
    A diaphragm is a horizontal or nearly horizontal system that transmits lateral forces to the vertical resisting elements. It can include horizontal bracing systems. This is stated in the NSCP Sec. 2.2.2.

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  • 9. 

    The property of material that causes it to rupture suddenly under stress with little evident       deformation. Since this property of materials lack the plastic behavior of ductile materials, they can give no warning of impending material

    • BRITLENESS

    • DUCTILITY

    • ELASTICITY

    • MALLEABILITY

    Correct Answer
    A. BRITLENESS
    Explanation
    Brittleness is the correct answer because it refers to the property of a material that causes it to rupture suddenly under stress with little deformation. Unlike ductile materials, brittle materials do not exhibit plastic behavior and cannot give any warning of impending material failure.

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  • 10. 

    The moment of a force system that causes or tends to cause rotation or torsion

    • TORQUE

    • BENDING

    • COMPRESSION

    • TENSION

    Correct Answer
    A. TORQUE
    Explanation
    Torque is the correct answer because it refers to the moment of a force system that causes or tends to cause rotation or torsion. It is a measure of the force's effectiveness in causing an object to rotate around an axis. Bending, compression, and tension are not directly related to rotation or torsion, making them incorrect answers.

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  • 11. 

    It is the middle part of a wide flange

    • Wing

    • Web

    • Side flange

    • Floor flange

    Correct Answer
    A. Web
    Explanation
    The correct answer is "web". The web refers to the middle part of a wide flange, which is a structural component typically used in construction and engineering. The web connects the two flanges of the wide flange and helps to distribute the load evenly across the structure. It provides strength and stability to the wide flange, allowing it to support heavy loads without bending or breaking.

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  • 12. 

    In reinforced concrete beams, which portion is under tension

    • Top

    • Middle

    • Bottom

    Correct Answer
    A. Bottom
    Explanation
    In reinforced concrete beams, the bottom portion is under tension. This is because when a load is applied to the beam, the top portion is compressed while the bottom portion is stretched. The reinforcement bars, typically made of steel, are placed in the bottom portion of the beam to resist this tension and prevent it from causing cracks or failure in the concrete. By placing the reinforcement in the bottom, it helps to distribute and balance the forces acting on the beam, ensuring its structural integrity.

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  • 13. 

    For a force system to be  static equilibrium, the algebraic summation of forces is:

    • Minimum

    • Maximum

    • 100 %

    • Zero

    Correct Answer
    A. Zero
    Explanation
    In order for a force system to be in static equilibrium, the algebraic summation of forces must be zero. This means that the sum of all the forces acting on an object in different directions should cancel each other out, resulting in a net force of zero. This condition ensures that the object remains at rest or in a state of constant velocity, with no acceleration.

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  • 14. 

    1.  What is the temporary force exerted by a device that introduces tension into pre-stressing tendons? (NSCP Sec. 5.2.1)

    • A. Jacking force

    • B. Pre-stressing force

    • C. Lifting force

    • D. Driving force

    Correct Answer
    A. A. Jacking force
    Explanation
    The correct answer is A. Jacking force. According to NSCP Sec. 5.2.1, the temporary force exerted by a device that introduces tension into pre-stressing tendons is referred to as the jacking force. This force is applied to the tendons to create the desired level of pre-stress in the structural element.

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  • 15. 

    A paste of cement, sand and water laid between bricks, blocks, or stones

    • Concrete

    • Mortar

    • Plaster

    • Grout

    Correct Answer
    A. Mortar
    Explanation
    Mortar is a paste made of cement, sand, and water that is used to bind bricks, blocks, or stones together. It is commonly used in construction to create strong and durable structures. Unlike concrete, which is a mixture of cement, sand, gravel, and water, mortar does not contain gravel. Plaster is a different material used for coating walls and ceilings, while grout is a mixture used for filling the gaps between tiles. Therefore, the correct answer is mortar.

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  • 16. 

    WEIGHT OF STEEL

    • 1000 kg/ m3

    • 7850 kg/ m3

    • 2400 kg/ m3

    Correct Answer
    A. 7850 kg/ m3
    Explanation
    The correct answer is 7850 kg/m3. This is the weight of steel per unit volume. Steel is a dense material and has a high density compared to other materials such as water or wood. The density of steel is commonly measured in kilograms per cubic meter (kg/m3). A density of 7850 kg/m3 means that for every cubic meter of steel, it weighs 7850 kilograms.

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  • 17. 

    The twisting of an elastic body about its longitudinal axis caused by two equal and opposite torques, producing shearing stresses in the body

    • TORSION

    • TORQUE

    • BENDING

    • SHEAR

    Correct Answer
    A. TORSION
    Explanation
    Torsion refers to the twisting of an elastic body around its longitudinal axis due to two equal and opposite torques. This twisting action generates shearing stresses within the body. Torsion is different from bending, which involves the application of a bending moment to a body, and shear, which refers to the parallel sliding of one layer of a material relative to another.

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  • 18. 

    A slight curve built intentionally into a beam, girder, or truss to compensate for anticipated deflection

    • Deflection

    • Elongation

    • Post tensioned

    • Camber

    Correct Answer
    A. Camber
    Explanation
    Camber refers to a slight curve intentionally built into a beam, girder, or truss to compensate for anticipated deflection. This curve helps to counteract the natural tendency of the structure to bend or sag under load, ensuring that it remains level and straight when subjected to external forces.

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  • 19. 

    1.  It is a storey in which its lateral stiffness is less than 70% of the storey above it. (NSCP 2.2.2)

    • A. soft storey

    • B. hard storey

    • C. critical storey

    • D. design storey

    Correct Answer
    A. A. soft storey
    Explanation
    A soft storey is a storey in a building where its lateral stiffness is significantly less than the storey above it. This means that the soft storey is more flexible and less resistant to lateral forces such as earthquakes. This can pose a serious structural risk as the soft storey may experience excessive deformation or collapse during seismic events. Therefore, it is important to design and strengthen soft storeys to ensure the overall stability and safety of the building.

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  • 20. 

    1.  Inert material that is mixed with hydraulic cement and water to produce concrete. (ACI 2.1 Definitions)

    • A. aggregate

    • B. admixture

    • C. escombro

    • D. compacted fill

    Correct Answer
    A. A. aggregate
    Explanation
    Aggregate is the correct answer because it refers to inert material that is mixed with hydraulic cement and water to produce concrete. This material helps to strengthen and provide stability to the concrete mixture. Admixture refers to a substance that is added to concrete to enhance its properties, escombro means debris or rubble, and compacted fill refers to a material used to fill voids or improve soil stability.

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  • 21. 

    the maximum stress that can be attained immediately before actual failure or rupture

    • Ultimate strength

    • Proportional limit

    • Yield point

    • Elastic limit

    Correct Answer
    A. Ultimate strength
    Explanation
    The ultimate strength refers to the maximum stress that a material can withstand just before it fails or ruptures. It is the point at which the material reaches its breaking point and can no longer bear any additional stress. This is different from other points such as the proportional limit, yield point, and elastic limit, which represent the points at which the material begins to deform or exhibit plastic behavior. The ultimate strength is the highest stress point that a material can handle before complete failure occurs.

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  • 22. 

    The vertical or horizontal face in a concrete structure where concreting has been stopped and continued later

    • Construction joint

    • Contraction joint

    • Expansion joint

    Correct Answer
    A. Construction joint
    Explanation
    A construction joint is a vertical or horizontal face in a concrete structure where concreting has been stopped and continued later. This joint is created intentionally to allow for the construction process to be carried out in stages or phases. It is used to separate different parts of the concrete structure that are poured at different times, ensuring that the overall structure is cohesive and structurally sound. The construction joint provides a point of connection between the two sections of concrete, allowing for the continuity of the construction process.

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  • 23. 

    1.  The required strength (U) to resist dead load D and live load L shall be at least equal to (NSCP Sec. 5.9.2)

    • A. 1.4 DL + 1.7 LL

    • B. 0.9 DL + 1.3 LL

    • C. 1.4 DL + 1.4 LL

    • D. 1.5 DL + 1.87 LL

    Correct Answer
    A. A. 1.4 DL + 1.7 LL
    Explanation
    The required strength to resist dead load D and live load L should be at least equal to 1.4 times the dead load plus 1.7 times the live load. This is based on the NSCP (National Structural Code of the Philippines) Section 5.9.2. This formula ensures that the structure can adequately support both the permanent and variable loads placed upon it.

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  • 24. 

    1.  Method of prestressing in which the tendons are tensioned before concrete is placed. (NSCP 5.2.1)

    • A. post-tensioning

    • B. pretensioning

    • C. midtensioning

    • D. paratensioning

    Correct Answer
    A. B. pretensioning
    Explanation
    Pretensioning is a method of prestressing in which the tendons are tensioned before the concrete is placed. This means that the tendons are first tensioned and anchored to the formwork, and then the concrete is poured around them. This method allows for greater control over the prestressing forces and ensures that the tendons are fully bonded to the concrete. This is in contrast to post-tensioning, where the tendons are tensioned after the concrete has hardened. Midtensioning and paratensioning are not recognized methods of prestressing.

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  • 25. 

    1.  It is a horizontal or nearly horizontal system acting to transmit lateral forces to the vertical resisting system including the horizontal bracing system. (NSCP 2.2.2)

    • A. brace

    • B. slab

    • C. diaphragm

    • D. platform

    Correct Answer
    A. C. diaphragm
    Explanation
    A diaphragm is a horizontal or nearly horizontal system that transmits lateral forces to the vertical resisting system, including the horizontal bracing system. This means that it helps distribute and transfer lateral forces, such as wind or seismic forces, to the vertical elements of a structure, such as columns or walls. This helps to stabilize and resist the lateral loads acting on the building.

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  • 26. 

    1.  Intensity of force per unit area. (NSCP 5.2.1)

    • A. strain

    • B. stress

    • C. impact

    • D. adhesion

    Correct Answer
    A. B. stress
    Explanation
    The correct answer is B. stress. Stress refers to the intensity of force per unit area. This means that stress measures the amount of force applied to a given area, which can cause deformation or change in shape. It is an important concept in engineering and materials science as it helps determine the strength and stability of structures and materials.

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  • 27. 

    1.  A structural system without a complete vertical load carrying space frame. This bracing system provides support for gravity loads. Resistance to lateral loads are provided by shear walls or braced frames. (NSCP Sec. 2.2.2 and NSCP Sec. 2.2.4.6.1)

    • A. Bearing wall system

    • B. Building frame system

    • C. Horizontal bracing system

    • D. Moment resisting frame system

    Correct Answer
    A. A. Bearing wall system
    Explanation
    The correct answer is A. Bearing wall system. According to the given information, this structural system does not have a complete vertical load carrying space frame. Instead, support for gravity loads is provided by bearing walls. Lateral loads are resisted by shear walls or braced frames. This explanation aligns with the definition and characteristics of a bearing wall system.

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  • 28. 

    The act of stretching or state of being pulled apart, resulting in the elongation of an elastic body

    • TENSION

    • COMPRESSION

    • AXIAL

    • BENDING

    Correct Answer
    A. TENSION
    Explanation
    Tension refers to the act of stretching or being pulled apart, causing the elongation of an elastic body. This can occur when a force is applied in opposite directions, causing the material to stretch and become elongated. Tension is different from compression, which involves the act of being squeezed or pressed together. Axial refers to forces applied along the axis of an object, while bending refers to the act of curving or flexing under a force.

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  • 29. 

    WEIGHT OF WATER IS

    • 1000 kg/ m3

    • 7850 kg/ m3

    • 2400 kg/ m3

    Correct Answer
    A. 1000 kg/ m3
    Explanation
    The weight of water is 1000 kg/m3 because this is the density of pure water at standard temperature and pressure. Density is defined as mass per unit volume, so a density of 1000 kg/m3 means that 1 cubic meter of water has a mass of 1000 kg.

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  • 30. 

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

    • Trusses

    • Columns

    • Beams

    • Footing

    Correct Answer
    A. Columns
    Explanation
    Columns are members that are generally vertically subjected to compressive loads, sometimes with bending moments. They are designed to support the weight of the structure above and transfer it to the foundation. Columns are typically used in building structures to provide vertical support and stability. Trusses are used to support roof and floor structures, beams are horizontal members that carry loads, and footings are used to distribute the load of a structure to the soil. Therefore, the correct answer is columns.

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  • 31. 

    1.  Plain or reinforced concrete element cast elsewhere than its final position in the structure. (NSCP 5.2.1)

    • A. prestressed concrete

    • B. preset concrete

    • C. in situ concrete

    • D. precast concrete

    Correct Answer
    A. D. precast concrete
    Explanation
    Precast concrete refers to concrete elements that are cast in a location other than their final position in the structure. This means that the concrete elements are manufactured in a controlled environment, such as a factory, and then transported to the construction site for installation. This method allows for better quality control and efficiency in construction.

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  • 32. 

    The weakening or failure of a material at a stress below the elastic limit when subjected   to a repeated series of stresses

    • FATIGUE

    • DEFLECTION

    • STRESS

    • CREEP

    Correct Answer
    A. FATIGUE
    Explanation
    Fatigue refers to the weakening or failure of a material when it is subjected to repeated stresses below its elastic limit. This occurs over time as the material is unable to withstand the repeated stress, leading to cracks, fractures, or deformation. Fatigue is different from creep, which is the gradual deformation of a material under a constant load over an extended period. Deflection refers to the bending or displacement of a material under load, while stress is the force applied to an object per unit area.

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  • 33. 

    The radial distance from any axis to a point at which the mass of a body could be concentrated without altering the moment of inertia of the body about that axis. For a   structural section, this  is equal to the square root of the quotient of the moment of inertia and the area

    • RADIUS OF CIRCLE

    • RADIUS OF SECTION

    • RADIUS OF GYRATION

    Correct Answer
    A. RADIUS OF GYRATION
    Explanation
    The correct answer is "Radius of Gyration". The radius of gyration is the radial distance from any axis to a point at which the mass of a body could be concentrated without altering the moment of inertia of the body about that axis. It is a measure of how the mass is distributed around an axis and is calculated as the square root of the quotient of the moment of inertia and the area. In the context of a structural section, the radius of gyration provides information about the section's resistance to bending and torsional forces.

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  • 34. 

    The minimum reinforcing steel for spiral columns allowed by the aci code

    • 4-16mm- diameter bars

    • 4-20mm- diameter bars

    • 4-25mm- diameter bars

    • 4-36mm- diameter bars

    Correct Answer
    A. 4-16mm- diameter bars
    Explanation
    The ACI code allows for a minimum reinforcing steel of 4-16mm diameter bars for spiral columns. This means that the smallest size of reinforcing steel bars that can be used in spiral columns according to the ACI code is 16mm in diameter.

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  • 35. 

    A tensile or compressive force acting along the longitudinal axis of a structural member and at the centroid of the cross section, producing axial stress without bending, torsion         

    • COMPRESSIVE FORCE

    • AXIAL FORCE

    • TENSILE FORCE

    • BENDING FORCE

    Correct Answer
    A. AXIAL FORCE
    Explanation
    An axial force refers to a tensile or compressive force that acts along the longitudinal axis of a structural member. It is applied at the centroid of the cross section, resulting in axial stress without any bending or torsion. This means that the force is directly in line with the member and does not cause any bending or twisting motion. Therefore, the correct answer is AXIAL FORCE.

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  • 36. 

    1.  Level at which earthquake motions is considered to be imparted to the structure. (NSCP 2.2.2)

    • A. base

    • B. roof deck

    • C. middle storey

    • D. top floor

    Correct Answer
    A. A. base
    Explanation
    The correct answer is A. base. According to NSCP 2.2.2, the level at which earthquake motions are considered to be imparted to the structure is at the base. This means that the ground motion caused by an earthquake is transmitted to the structure through its foundation or base. The base is the lowest part of the structure and is in direct contact with the ground, making it the most vulnerable to seismic forces. Therefore, it is important to design and reinforce the base of a structure to withstand earthquake motions.

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  • 37. 

    The ratio of the effective length of a column to its least ratio of gyration  The higher of this ratio, the lower is the critical stress that will cause buckling A primary objective  in the design of a column is to reduce this ratio by minimizing its effective length or maximizing its effective length or maximizing the radius of gyration of its cross section

    • Column ratio

    • Slenderness ratio

    • Poisson's ratio

    • Stress strain ratio

    Correct Answer
    A. Slenderness ratio
    Explanation
    The slenderness ratio refers to the ratio of the effective length of a column to its least radius of gyration. A higher slenderness ratio indicates a longer column or a smaller radius of gyration, which in turn means that the column is more susceptible to buckling. Therefore, the primary objective in column design is to reduce the slenderness ratio by either minimizing the effective length of the column or maximizing the radius of gyration of its cross section.

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  • 38. 

    1.  It is a mat-formed panel consisting of particles of wood or combinations of wood particles and wood fibers bonded together with synthetic resins or other suitable bonding system by a bonding process. (NSCP 3.2.1)

    • A. particle board

    • B. wood board

    • C. resin board

    • D. laminated board

    Correct Answer
    A. A. particle board
    Explanation
    The correct answer is A. particle board. This is because particle board is a mat-formed panel made of wood particles or a combination of wood particles and wood fibers, bonded together with synthetic resins or other suitable bonding systems. The description provided in the question matches the definition of particle board.

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  • 39. 

    1.  Element, usually vertical, used to enclose or separate spaces and also at times, serve as structural member. (NSCP 5.2.1)

    • A. column

    • B. deep beam

    • C. wall

    • D. slab

    Correct Answer
    A. C. wall
    Explanation
    A wall is an element that is commonly used to enclose or separate spaces in a building. It can also serve as a structural member, providing support and stability to the structure. Walls are usually vertical and can be made of various materials such as concrete, brick, or wood. They play a crucial role in defining the layout and function of a building, as well as providing privacy and security.

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  • 40. 

    1.  It is the secondary effect on shears and moments of frame members induced by the vertical loads acting on the laterally displaced building frame during earthquake. (NSCP 2.2.2)

    • A. gravity effect

    • B. vibration

    • C. harmonic motion

    • D. P-delta effect

    Correct Answer
    A. D. P-delta effect
    Explanation
    The correct answer is D. P-delta effect. The P-delta effect refers to the secondary effects on shears and moments of frame members induced by the vertical loads acting on the laterally displaced building frame during an earthquake. This effect takes into account the deformation of the structure caused by the lateral displacements and the resulting change in the distribution of internal forces. It is an important consideration in the design of earthquake-resistant structures to ensure their stability and safety.

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  • 41. 

    1.  It is defined as the displacement of one level relative to the level above or below it. (NSCP 2.2.2)

    • A. storey movement

    • B. storey vibration

    • C. storey drift

    • D. storey motion

    Correct Answer
    A. C. storey drift
    Explanation
    Storey drift is the correct answer because it is defined as the displacement of one level relative to the level above or below it. This means that storey drift refers to the horizontal movement or displacement of a building's storey in relation to the adjacent storey. It is an important consideration in structural engineering as it helps determine the building's stability and ability to withstand lateral loads such as wind or seismic forces.

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  • 42. 

    1.  In spirally reinforced or tied reinforced compression members, the critical distance between longitudinal bars shall not be less than 40mm or… (NSCP 5.7.6.3)

    • A. 1.0 db

    • B. 1.5 db

    • C. 2.0 db

    • D. 2.5 db

    Correct Answer
    A. B. 1.5 db
    Explanation
    In spirally reinforced or tied reinforced compression members, the critical distance between longitudinal bars should be at least 1.5 times the diameter of the bars (1.5 db). This requirement is specified in the National Structural Code of the Philippines (NSCP 5.7.6.3). The critical distance is important to ensure proper confinement and prevent buckling of the longitudinal bars under compression loads. Increasing the distance between bars beyond 1.5 db could compromise the structural integrity of the member. Therefore, option B is the correct answer.

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  • 43. 

    1.  Concrete flexural members of precast and/or cast-in-place concrete elements constructed in separate placements but so interconnected that all elements respond to loads as a unit. (NSCP Sec. 5.2.1)

    • A. composite concrete flexural member

    • B. complex concrete flexural member

    • C. compound concrete flexural member

    • D. complete concrete flexural member

    Correct Answer
    A. A. composite concrete flexural member
    Explanation
    The correct answer is A. composite concrete flexural member. This is because the definition provided states that the elements are constructed separately but interconnected so that they respond to loads as a unit. This aligns with the concept of composite construction, where different materials are combined to create a single structural element with enhanced properties. Therefore, a composite concrete flexural member would accurately describe the given scenario.

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  • 44. 

    What is the weight of 1 cu. m. of concrete?

    • A. 2400 N

    • B. 2400 KN

    • C. 2400 kg

    • D. 2400 lbs

    Correct Answer
    A. C. 2400 kg
    Explanation
    The weight of 1 cubic meter of concrete is 2400 kg. This is because the density of concrete is typically around 2400 kg/m³. Density is a measure of how much mass is contained in a given volume, so in this case, 1 cubic meter of concrete would weigh 2400 kg.

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  • 45. 

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

    • 12db

    • 6db

    • 10db

    • 8db

    Correct Answer
    A. 6db
    Explanation
    The correct answer is 6db. The term "db" in this context refers to the minimum bend diameter for bars of different diameters. The question is asking for the minimum bend diameter for bars ranging from 10mm to 25mm in diameter. Out of the given options, 6db is the correct answer. This means that the minimum bend diameter for these bars is 6 times their diameter.

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  • 46. 

    Stress at which material specimen breaks

    • Ultimate strength

    • Rupture strength

    • Nominal strength

    • Proportional strength

    Correct Answer
    A. Rupture strength
    Explanation
    Rupture strength refers to the maximum stress a material can withstand before breaking. It is the point at which the material specimen fails or fractures. This term is used to describe the ability of a material to resist external forces and is an important characteristic in determining the durability and reliability of a material.

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  • 47. 

     Concrete cover of pipes, conduits, and fittings shall not be less than ___ for concrete exposed to earth or weather, nor 20mm for concrete not exposed to weather or in contact with ground. (NSCP Sec. 6.3.10)

    • 25 mm

    • 40 mm

    • 50 mm

    • 65 mm

    Correct Answer
    A. 40 mm
    Explanation
    According to NSCP Sec. 6.3.10, the concrete cover for pipes, conduits, and fittings should not be less than 40 mm for concrete exposed to earth or weather. This means that the minimum thickness of concrete covering these elements should be 40 mm to protect them from the effects of the environment.

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  • 48. 

    The top of a cantilever beam is in

    • Compression

    • Tension

    • Axial

    • Stress

    Correct Answer
    A. Tension
    Explanation
    A cantilever beam is a structural element that is fixed at one end and free at the other end. In this configuration, the top of the beam is subjected to bending forces, causing it to experience tension. This tension is a result of the beam's resistance to bending and is necessary to maintain the stability and equilibrium of the structure. Therefore, the correct answer is tension.

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  • 49. 

    The minimum thickness, based on span L, of horizontal members (beams) or ribbed one-way slabs if it is simply-supported is:

    • A. L/16

    • B. L/18.5

    • C. L/21

    • D. L/8

    Correct Answer
    A. A. L/16
    Explanation
    The correct answer is A. L/16. This means that the minimum thickness of horizontal members or ribbed one-way slabs, if they are simply-supported, should be L/16, where L is the span length. This is a standard rule in structural engineering to ensure the stability and strength of the beams or slabs. By following this guideline, the structure will be able to withstand the load and prevent any potential failure or collapse.

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Quiz Review Timeline (Updated): Apr 19, 2024 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Apr 19, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 25, 2010
    Quiz Created by
    C2x_op26
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