DM G+1 EXAM PREP | 157 PRACTICE QUESTIONS & ANSWERS +
COMPREHENSIVE STUDY REVIEW | 2026/2027
1. During construction of a reinforced-concrete residential building, the
engineer explains that concrete is used extensively because it performs
particularly well under one principal type of stress, while reinforcing steel
compensates for a major weakness. Which statement best describes this
behavior of normal concrete?
A. Concrete is strong in tension and weak in compression
B. Concrete has approximately equal tensile and compressive strength
C. Concrete is strong in compression but comparatively weak in tension
D. Concrete is primarily used because it has high tensile ductility
Answer: C
2. A site engineer is checking the dimensional proportions of a rectangular
slab before deciding whether it should generally be treated as a one-way or
two-way slab for structural analysis. The slab has a longer span that is more
than twice its shorter span. Which classification is most appropriate?
A. One-way slab
B. Two-way slab
C. Flat plate only
D. Ribbed slab only
Answer: A
3. During reinforcement inspection of a reinforced-concrete beam, the site
engineer notices that closed stirrups have been installed at regular intervals
along the beam. What is the principal structural function of these stirrups?
A. Increase the concrete cover
B. Resist shear forces and help confine longitudinal reinforcement
C. Eliminate the need for longitudinal reinforcement
D. Prevent all flexural cracking at midspan
Answer: B
pg. 1
, 4. A contractor is preparing a fresh concrete mixture for placement in a
structural slab. The engineer requests a field test that can rapidly indicate
the consistency and workability of the fresh concrete before placement.
Which test is most appropriate?
A. Slump test
B. Rebound hammer test
C. Core compression test
D. Ultrasonic pulse test
Answer: A
5. A concrete cube is prepared from a representative batch of concrete and
later tested in a laboratory to determine its compressive performance.
What property is principally being evaluated by the cube compression test?
A. Tensile strain capacity
B. Surface hardness only
C. Compressive strength
D. Reinforcement bond length
Answer: C
6. During an inspection, a quality-control engineer uses a Schmidt rebound
hammer on an existing concrete member without cutting or removing a
specimen. How should this test generally be classified?
A. Destructive testing
B. Non-destructive testing
C. Chemical testing
D. Tensile failure testing
Answer: B
7. A project engineer wants to determine the in-place compressive strength of
concrete in an existing structural member and decides that an actual
cylindrical specimen should be removed from the structure for laboratory
testing. Which method is being used?
A. Slump testing
B. Rebound hammer testing
pg. 2
, C. Core sampling
D. Flow-table testing
Answer: C
8. A concrete mix is being prepared for a large slab during hot weather, and
the measured temperature of the fresh mixture is higher than the project
specification permits. Which action can be used to reduce the concrete
temperature before placement when properly controlled?
A. Add uncontrolled water directly at the site
B. Add additional cement without recalculation
C. Increase the sand content without redesign
D. Use ice as part of the controlled mixing water
Answer: D
9. A contractor places fresh concrete in a heavily reinforced beam and notices
that the mixture contains significant entrapped air after placement. Which
construction operation should be performed properly to reduce unwanted
voids and improve consolidation?
A. Compaction
B. Painting
C. Waterproofing
D. Surface polishing
Answer: A
10. A site supervisor explains that curing is essential after concrete placement
because early loss of moisture can interfere with cement hydration and
affect long-term performance. Which description best represents the
purpose of curing?
A. To increase evaporation from the concrete
B. To maintain suitable moisture and temperature conditions for hydration
and strength development
C. To eliminate all chemical reactions in the concrete
D. To immediately reduce the cement content
Answer: B
pg. 3
, 11. A residential building contractor is removing formwork from a reinforced-
concrete slab and wants to avoid removing the supporting formwork
prematurely. Which factor should primarily govern the decision?
A. The color of the concrete surface
B. The number of workers available
C. The concrete's achieved strength and the applicable project/code
requirements
D. The brand of cement used alone
Answer: C
12. A contractor is constructing a cantilevered reinforced-concrete slab.
Because the slab projects beyond its support, premature removal of the
supporting formwork could cause excessive deflection or failure. Which
consideration is especially important before removing the formwork?
A. Only the slab surface color
B. The required strength development and structural behavior of the
cantilever
C. The number of construction workers on the floor below
D. The amount of exterior paint already purchased
Answer: B
13. During construction of a column, the contractor asks when side forms can
generally be removed without relying on the forms for vertical structural
support. Which factor should the engineer consider first?
A. Whether sufficient concrete strength has developed and the forms can
be removed without damaging the member
B. Whether the concrete has become completely dry
C. Whether the reinforcement has been painted
D. Whether the floor tiles have been delivered
Answer: A
14. A quality-control engineer is reviewing concrete test results and wants to
compare later-age strength with the specified characteristic strength used
in design. Which testing age is commonly used as the principal reference
pg. 4
COMPREHENSIVE STUDY REVIEW | 2026/2027
1. During construction of a reinforced-concrete residential building, the
engineer explains that concrete is used extensively because it performs
particularly well under one principal type of stress, while reinforcing steel
compensates for a major weakness. Which statement best describes this
behavior of normal concrete?
A. Concrete is strong in tension and weak in compression
B. Concrete has approximately equal tensile and compressive strength
C. Concrete is strong in compression but comparatively weak in tension
D. Concrete is primarily used because it has high tensile ductility
Answer: C
2. A site engineer is checking the dimensional proportions of a rectangular
slab before deciding whether it should generally be treated as a one-way or
two-way slab for structural analysis. The slab has a longer span that is more
than twice its shorter span. Which classification is most appropriate?
A. One-way slab
B. Two-way slab
C. Flat plate only
D. Ribbed slab only
Answer: A
3. During reinforcement inspection of a reinforced-concrete beam, the site
engineer notices that closed stirrups have been installed at regular intervals
along the beam. What is the principal structural function of these stirrups?
A. Increase the concrete cover
B. Resist shear forces and help confine longitudinal reinforcement
C. Eliminate the need for longitudinal reinforcement
D. Prevent all flexural cracking at midspan
Answer: B
pg. 1
, 4. A contractor is preparing a fresh concrete mixture for placement in a
structural slab. The engineer requests a field test that can rapidly indicate
the consistency and workability of the fresh concrete before placement.
Which test is most appropriate?
A. Slump test
B. Rebound hammer test
C. Core compression test
D. Ultrasonic pulse test
Answer: A
5. A concrete cube is prepared from a representative batch of concrete and
later tested in a laboratory to determine its compressive performance.
What property is principally being evaluated by the cube compression test?
A. Tensile strain capacity
B. Surface hardness only
C. Compressive strength
D. Reinforcement bond length
Answer: C
6. During an inspection, a quality-control engineer uses a Schmidt rebound
hammer on an existing concrete member without cutting or removing a
specimen. How should this test generally be classified?
A. Destructive testing
B. Non-destructive testing
C. Chemical testing
D. Tensile failure testing
Answer: B
7. A project engineer wants to determine the in-place compressive strength of
concrete in an existing structural member and decides that an actual
cylindrical specimen should be removed from the structure for laboratory
testing. Which method is being used?
A. Slump testing
B. Rebound hammer testing
pg. 2
, C. Core sampling
D. Flow-table testing
Answer: C
8. A concrete mix is being prepared for a large slab during hot weather, and
the measured temperature of the fresh mixture is higher than the project
specification permits. Which action can be used to reduce the concrete
temperature before placement when properly controlled?
A. Add uncontrolled water directly at the site
B. Add additional cement without recalculation
C. Increase the sand content without redesign
D. Use ice as part of the controlled mixing water
Answer: D
9. A contractor places fresh concrete in a heavily reinforced beam and notices
that the mixture contains significant entrapped air after placement. Which
construction operation should be performed properly to reduce unwanted
voids and improve consolidation?
A. Compaction
B. Painting
C. Waterproofing
D. Surface polishing
Answer: A
10. A site supervisor explains that curing is essential after concrete placement
because early loss of moisture can interfere with cement hydration and
affect long-term performance. Which description best represents the
purpose of curing?
A. To increase evaporation from the concrete
B. To maintain suitable moisture and temperature conditions for hydration
and strength development
C. To eliminate all chemical reactions in the concrete
D. To immediately reduce the cement content
Answer: B
pg. 3
, 11. A residential building contractor is removing formwork from a reinforced-
concrete slab and wants to avoid removing the supporting formwork
prematurely. Which factor should primarily govern the decision?
A. The color of the concrete surface
B. The number of workers available
C. The concrete's achieved strength and the applicable project/code
requirements
D. The brand of cement used alone
Answer: C
12. A contractor is constructing a cantilevered reinforced-concrete slab.
Because the slab projects beyond its support, premature removal of the
supporting formwork could cause excessive deflection or failure. Which
consideration is especially important before removing the formwork?
A. Only the slab surface color
B. The required strength development and structural behavior of the
cantilever
C. The number of construction workers on the floor below
D. The amount of exterior paint already purchased
Answer: B
13. During construction of a column, the contractor asks when side forms can
generally be removed without relying on the forms for vertical structural
support. Which factor should the engineer consider first?
A. Whether sufficient concrete strength has developed and the forms can
be removed without damaging the member
B. Whether the concrete has become completely dry
C. Whether the reinforcement has been painted
D. Whether the floor tiles have been delivered
Answer: A
14. A quality-control engineer is reviewing concrete test results and wants to
compare later-age strength with the specified characteristic strength used
in design. Which testing age is commonly used as the principal reference
pg. 4
