Question 1

What is a ribbed concrete slab- on- ground?

Accepted Answer

A ribbed concrete slab is a sl

Question 2

According to building codes, plain concrete (concrete without steel reinforcement)is not permitted in new construction.

Accepted Answer

A) True 
 B)False

Question 3

Apart from corrosion protection, what is the other function of concrete cover?

Accepted Answer

To provide fire resistance to

Question 4

Sketch a typical (a)control joint in a slab- on- ground, (b)construction joint in a slab- on- ground, (c)isolation joint in a slab- on- ground, and (d)prestressing strand.

Accepted Answer

(a) A control joint in a slab-on-ground

Question 5

The term prestressed concrete refers to both pretensioned and posttensioned concrete.

Accepted Answer

A) True 
 B)False

Question 6

In site- cast concrete construction, shores are used

Accepted Answer

A) as formwork for concrete columns. 
B) as formwork for concrete walls. 
C) in ground- supported concrete slabs. 
D) in elevated concrete slabs. 
E) none of the above. 
A) as formwork for concrete columns. 
B) as formwork for concrete walls. 
C) in ground- supported concrete slabs. 
D) in elevated concrete slabs. 
E) none of the above.

Question 7

Reshoring concrete structures are necessary where excessive deflection of floor slabs or foundation settlement is anticipated on removal of shores.

Accepted Answer

A) True 
 B)False

Question 8

Hooks in bars are produced by turning the bars through

Accepted Answer

A) 180° or 270°. 
B) 45° or 90°. 
C) 90° or 180°. 
D) 30° or 60°. 
A) 180° or 270°. 
B) 45° or 90°. 
C) 90° or 180°. 
D) 30° or 60°.

Question 9

Pocket formers in a PT concrete slab- on- ground are used at

Accepted Answer

A) live ends. 
B) upper ends. 
C) dead ends. 
D) lower ends. 
E) any one of the above. 
A) live ends. 
B) upper ends. 
C) dead ends. 
D) lower ends. 
E) any one of the above.

Question 10

Explain what stirrups in a reinforced concrete beam are and their function.

Accepted Answer

Stirrups are vertical loops ma

Question 11

Why is steel reinforcement required in concrete?

Accepted Answer

Concrete is reasonably strong in compres

Question 12

The most important reason for providing ties in a concrete column is to

Accepted Answer

A) increase the shear strength of a column. 
B) allow the formwork to be tied to the longitudinal bars in the column. 
C) prevent the buckling of longitudinal column bars. 
D) increase the compressive strength of a column. 
E) Ties are generally not provided in a concrete column. 
A) increase the shear strength of a column. 
B) allow the formwork to be tied to the longitudinal bars in the column. 
C) prevent the buckling of longitudinal column bars. 
D) increase the compressive strength of a column. 
E) Ties are generally not provided in a concrete column.

Question 13

Sketch in section a typical ribbed concrete slab- on- ground.

Accepted Answer

A typical ribbed concrete slab-on-ground

Question 14

Which of the following statements is true?

Accepted Answer

A) The term strands refers to reinforcing bars that have been bent to required shapes. 
B) The term strands includes tendons. 
C) The term tendons includes strands. 
D) The term tendons refers to reinforcing bars that have been bent to required shapes. 
E) None of the above. 
A) The term strands refers to reinforcing bars that have been bent to required shapes. 
B) The term strands includes tendons. 
C) The term tendons includes strands. 
D) The term tendons refers to reinforcing bars that have been bent to required shapes. 
E) None of the above.

Question 15

In a PT concrete slab- on- ground, the tendons are stressed from the

Accepted Answer

A) live ends. 
B) lower ends. 
C) dead ends. 
D) upper ends. 
E) any one of the above. 
A) live ends. 
B) lower ends. 
C) dead ends. 
D) upper ends. 
E) any one of the above.

Question 16

What is a form liner and what is it made of?

Accepted Answer

A form liner is a plastic sheet that is

Question 17

Explain the difference between prestressing strands and prestressing tendons.

Accepted Answer

A prestressing strand is the p

Question 18

The yield strength of prestressing steel is

Accepted Answer

A) 60 ksi. 
B) 100 ksi. 
C) 50 ksi. 
D) 40 ksi. 
E) none of the above. 
A) 60 ksi. 
B) 100 ksi. 
C) 50 ksi. 
D) 40 ksi. 
E) none of the above.

Question 19

In which situations is a vapor retarder under a concrete slab- on- ground not needed?

Accepted Answer

In situations where the passag

Question 20

Describe the difference between (a)reinforcing steel and prestressing steel, (b)formwork and shores, (c)formwork and flying forms, and (d)shoring and reshoring.

Accepted Answer

(a) Reinforcing steel and prestressing s

Exam 22: Concrete Construction-I Formwork, Reinforcement, and Slabs-On-Ground

What is a ribbed concrete slab- on- ground?

According to building codes, plain concrete (concrete without steel reinforcement)is not permitted in new construction.

Apart from corrosion protection, what is the other function of concrete cover?

Sketch a typical (a)control joint in a slab- on- ground, (b)construction joint in a slab- on- ground, (c)isolation joint in a slab- on- ground, and (d)prestressing strand.

The term prestressed concrete refers to both pretensioned and posttensioned concrete.

In site- cast concrete construction, shores are used

Reshoring concrete structures are necessary where excessive deflection of floor slabs or foundation settlement is anticipated on removal of shores.

Hooks in bars are produced by turning the bars through

Pocket formers in a PT concrete slab- on- ground are used at

Explain what stirrups in a reinforced concrete beam are and their function.

Why is steel reinforcement required in concrete?

The most important reason for providing ties in a concrete column is to

Sketch in section a typical ribbed concrete slab- on- ground.

Which of the following statements is true?

In a PT concrete slab- on- ground, the tendons are stressed from the

What is a form liner and what is it made of?

Explain the difference between prestressing strands and prestressing tendons.

The yield strength of prestressing steel is

In which situations is a vapor retarder under a concrete slab- on- ground not needed?

Describe the difference between (a)reinforcing steel and prestressing steel, (b)formwork and shores, (c)formwork and flying forms, and (d)shoring and reshoring.

An Overview of the Building Delivery Process How Buildings Come Into Being

Design and Constructions Regulations

Loads on Buildings

Load Resistance the Structural Properties of Materials

Properties of the Envelope-I Thermal Properties

Properties of the Envelope-II Air and Water Vapor Control

Fire and Smoke-Related Properties

Acoustical Properties of Materials

Principles of Joints and Sealants Expansion and Contraction Control

Principles of Sustainable Construction

Soils and Excavations

Below-Grade Construction Foundation Systems and Basements

Materials for Wood Construction-I Lumber

Materials for Wood Construction-Ii Engineered Wood Products, Fasteners, and Connectors

Wood Light-Frame Construction-I

Wood Light-Frame Construction-II

Structural Insulated Panel Construction

Material Steel and Steel Components

Structural Steel Construction

Cold-Formed Steel Construction

Lime, Portland Cement, and Concrete

Concrete Construction-II Site-Cast and Precast Concrete Framing Systems

Masonry Materials-I Mortar and Brick

Masonry Materials-II Concrete Masonry Units, Natural Stone, and Glass Masonry Units

Masonry and Concrete Bearing Wall Construction

Exterior Wall Cladding-I Principles of Rainwater Infiltration Control

Exterior Wall Cladding-II Masonry, Precast Concrete, and Gfrc

Exterior Wall Cladding-III Stucco, Adhered Veneer, Eifs, Natural Stone, and Insulated Metal Panels

Glass, Glazing, and Light-Transmitting Plastics

Windows and Doors

Exterior Wall Cladding-Iv Wall System in Glass

Roofing-I Low-Slope Roofs

Roofing-I Steep Roofs

Stairs

Floor Coverings

Ceilings

Filters