BTECH - REINFORCED CONCRETE
0.01 TO 0.08 TIMES THE GROSS CROSS-SECTIONAL AREA OF REINFORCED
CONCRETE COLUMN - answer-The range to which the effective cross-sectional area of
vertical reinforcement is limited in relation to the gross cross-sectional area of the column.
1.5 TIMES COARSE AGGREGATE SIZE - answer-The minimum clear spacing between spirals
of lateral reinforcement in spiral reinforced concrete column expressed in multiples of the coarse
aggregate size.
1/6 OF THE CORE DIAMETER - answer-The maximum center-to-center spacing, expressed as
a multiple of the core diameter, between spirals of lateral reinforcement in spiral reinforced
concrete column.
203 MILLIMETERS or 8 INCHES - answer-The minimum thickness of the section for
rectangular reinforced concrete columns that constitute the principal supports for a floor or roof.
254 MILLIMETERS or 10 INCHES - answer-The minimum diameter of the section for circular
reinforced concrete columns that constitute the principal supports for a floor or roof.
30 DEGREES OR MORE - answer-The angle to which a bent bar is bent from the longitudinal
axis of a reinforced concrete beam. This angle is perpendicular to and intersects the cracking
that could occur from diagonal tension.
35 MILLIMETERS or 1 3/8 INCHES - answer-The minimum clear spacing between spirals of
lateral reinforcement in spiral reinforced concrete column expressed in millimeters or inches.
48 TIE DIAMETERS, 16 BAR DIAMETERS, OR LEAST DIMENSION OF COLUMN SECTION -
answer-The three factors which limit the spacing of lateral ties in tied reinforced concrete
columns.
508 & 762 MILLIMETERS or 20 & 30 INCHES - answer-The two standard widths of a pan which
is a reusable metal or fiberglass mold used in forming a ribbed slab.
61,935 SQUARE MILLIMETERS or 96 SQUARE INCHES - answer-The minimum gross area of
the section for reinforced concrete columns that constitute the principal supports for a floor or
roof.
76 MILLIMETERS or 3 INCHES - answer-The maximum clear spacing between spirals of lateral
reinforcement in spiral reinforced concrete column expressed in millimeters or inches.
9.5 MILLIMETERS or 3/8 INCH - answer-The minimum diameter of bars that can be used as
lateral reinforcements in spiral or tied reinforced concrete columns.
ANCHORAGE - answer-Any of various means, such as embedment length or hooked bars, for
developing tension or compression in a reinforcing bar on each side of a critical section in order
to prevent bond failure or splitting.
, BALANCED SECTION - answer-A concrete section in which the tension reinforcement
theoretically reaches its specified yield strength as the concrete in compression reaches its
assumed ultimate strain.
BAR DIAMETER, MAXIMUM SIZE OF COARSE AGGREGATE, and THICKNESS OF
CONCRETE SECTION - answer-The three factors that regulate the bar spacing of parallel
reinforcing bars.
BAR SPACING - answer-The center-to-center spacing of parallel reinforcing bars, the resulting
clear distance between the bars being regulated by bar diameter, maximum size of coarse
aggregate, and thickness of the concrete section.
BEAM-AND-GIRDER SLAB - answer-A one-way slab supporteding by secondary beams which
in turn are supported by primary beams or girders.
BENT BAR - answer-A longitudinal bar bent to an angle of 30° or more with the axis of a
concrete beam, perpendicular to and intersecting the cracking that could occur from diagonal
tension.
BÉTON ARMÉ - answer-Concrete in which steel reinforcement is embedded in such a manner
that the two materials act together in resisting forces. Also called ferroconcrete or reinforced
concrete.
BETWEEN 6 & 9 METERS or 20 & 30 FEET - answer-The range of the span of ribbed slabs for
which one distribution rib is required.
BOND - answer-The adhesion between two substances such as concrete and reinforcing bars.
BOND STRESS - answer-The adhesive force per unit area of contact between a reinforcing bar
and the surrounding concrete developed at any section of a flexural member.
BONDING LAYER - answer-A thin layer of mortar spread on a moistened and prepared existing
concrete surface prior to laying a new concrete slab.
BOTTOM BAR - answer-Any of the longitudinal bar serving as tension reinforcement in the
section of a concrete beam or slab subject to a positive moment.
BUTT SPLICE - answer-A splice for transferring tensile or compressive stresses from one
longitudinal bar to another, made by butting their ends together and connecting them in a
positive fashion.
COLUMN STRIP - answer-A panel strip occupying the adjacent quarter panels on both sides of
a column centerline.
COMPOSITE COLUMN - answer-A structural steel section thoroughly encased in concrete
reinforced with both vertical and spiral reinforcement.
COMPOUND COLUMN - answer-A structural steel column encased in concrete at least 64
millimeters (or 2 1/2 inches) thick, and reinforced with wire mesh.
0.01 TO 0.08 TIMES THE GROSS CROSS-SECTIONAL AREA OF REINFORCED
CONCRETE COLUMN - answer-The range to which the effective cross-sectional area of
vertical reinforcement is limited in relation to the gross cross-sectional area of the column.
1.5 TIMES COARSE AGGREGATE SIZE - answer-The minimum clear spacing between spirals
of lateral reinforcement in spiral reinforced concrete column expressed in multiples of the coarse
aggregate size.
1/6 OF THE CORE DIAMETER - answer-The maximum center-to-center spacing, expressed as
a multiple of the core diameter, between spirals of lateral reinforcement in spiral reinforced
concrete column.
203 MILLIMETERS or 8 INCHES - answer-The minimum thickness of the section for
rectangular reinforced concrete columns that constitute the principal supports for a floor or roof.
254 MILLIMETERS or 10 INCHES - answer-The minimum diameter of the section for circular
reinforced concrete columns that constitute the principal supports for a floor or roof.
30 DEGREES OR MORE - answer-The angle to which a bent bar is bent from the longitudinal
axis of a reinforced concrete beam. This angle is perpendicular to and intersects the cracking
that could occur from diagonal tension.
35 MILLIMETERS or 1 3/8 INCHES - answer-The minimum clear spacing between spirals of
lateral reinforcement in spiral reinforced concrete column expressed in millimeters or inches.
48 TIE DIAMETERS, 16 BAR DIAMETERS, OR LEAST DIMENSION OF COLUMN SECTION -
answer-The three factors which limit the spacing of lateral ties in tied reinforced concrete
columns.
508 & 762 MILLIMETERS or 20 & 30 INCHES - answer-The two standard widths of a pan which
is a reusable metal or fiberglass mold used in forming a ribbed slab.
61,935 SQUARE MILLIMETERS or 96 SQUARE INCHES - answer-The minimum gross area of
the section for reinforced concrete columns that constitute the principal supports for a floor or
roof.
76 MILLIMETERS or 3 INCHES - answer-The maximum clear spacing between spirals of lateral
reinforcement in spiral reinforced concrete column expressed in millimeters or inches.
9.5 MILLIMETERS or 3/8 INCH - answer-The minimum diameter of bars that can be used as
lateral reinforcements in spiral or tied reinforced concrete columns.
ANCHORAGE - answer-Any of various means, such as embedment length or hooked bars, for
developing tension or compression in a reinforcing bar on each side of a critical section in order
to prevent bond failure or splitting.
, BALANCED SECTION - answer-A concrete section in which the tension reinforcement
theoretically reaches its specified yield strength as the concrete in compression reaches its
assumed ultimate strain.
BAR DIAMETER, MAXIMUM SIZE OF COARSE AGGREGATE, and THICKNESS OF
CONCRETE SECTION - answer-The three factors that regulate the bar spacing of parallel
reinforcing bars.
BAR SPACING - answer-The center-to-center spacing of parallel reinforcing bars, the resulting
clear distance between the bars being regulated by bar diameter, maximum size of coarse
aggregate, and thickness of the concrete section.
BEAM-AND-GIRDER SLAB - answer-A one-way slab supporteding by secondary beams which
in turn are supported by primary beams or girders.
BENT BAR - answer-A longitudinal bar bent to an angle of 30° or more with the axis of a
concrete beam, perpendicular to and intersecting the cracking that could occur from diagonal
tension.
BÉTON ARMÉ - answer-Concrete in which steel reinforcement is embedded in such a manner
that the two materials act together in resisting forces. Also called ferroconcrete or reinforced
concrete.
BETWEEN 6 & 9 METERS or 20 & 30 FEET - answer-The range of the span of ribbed slabs for
which one distribution rib is required.
BOND - answer-The adhesion between two substances such as concrete and reinforcing bars.
BOND STRESS - answer-The adhesive force per unit area of contact between a reinforcing bar
and the surrounding concrete developed at any section of a flexural member.
BONDING LAYER - answer-A thin layer of mortar spread on a moistened and prepared existing
concrete surface prior to laying a new concrete slab.
BOTTOM BAR - answer-Any of the longitudinal bar serving as tension reinforcement in the
section of a concrete beam or slab subject to a positive moment.
BUTT SPLICE - answer-A splice for transferring tensile or compressive stresses from one
longitudinal bar to another, made by butting their ends together and connecting them in a
positive fashion.
COLUMN STRIP - answer-A panel strip occupying the adjacent quarter panels on both sides of
a column centerline.
COMPOSITE COLUMN - answer-A structural steel section thoroughly encased in concrete
reinforced with both vertical and spiral reinforcement.
COMPOUND COLUMN - answer-A structural steel column encased in concrete at least 64
millimeters (or 2 1/2 inches) thick, and reinforced with wire mesh.
