REINFORCED CONCRETE
CONSTRUCTION QUESTIONS &
ANSWERS(RATED A+)
One Way Slab - ANSWERProbably the most commonly used type or reinforced
concrete
construction consists of a solid slab supported by two parallel beams,
the beams framing into girders, and the girders in turn framing into
columns. The reinforcement slabs runs in one direction only, from beam to beam
One Way Joist Slab - ANSWERConsists of relatively small adjacent T-beams.
When the open spaces between the webs or rings are filled with clay tile, gypsum tile,
concrete filler block or
steel forms, the floor system is called a?
Two Way Slab - ANSWERWhen a floor panel is square or nearly so, having beams or
walls on four sides, it is generally economical to use two sets of reinforcing bars placed
at right angles to each other. These bars in two directions transfer the loads to the four
supporting beams or walls.
Two Way Waffle Slab - ANSWERis a two way concrete slab reinforced by ribs in two
directions. These slabs are able to carry heavier loads and span longer distances than
flat slabs.
Two Way Flat Plate - ANSWERIs a concrete slab of uniform thickness reinforced in two
or
more directions and supported directly by columns without beams or girders
Two Way Flat Slabs - ANSWERIs a flat plate thickened at its column supports to
increase its shear strength and moment-resisting capacity
Short Columns - ANSWERType of concrete columns occur when the unsupported
height is not greater than ten times the shortest lateral dimension of the
cross section.
Large Columns - ANSWERType of concrete columns occur when the unsupported
height is more than ten times the shortest lateral dimension of the cross
section.
Tied Columns - ANSWERThese are columns with longitudinal bars and lateral ties.
Spiral Columns - ANSWERThese are columns with longitudinal bars and closely spaced
continuous spiral hooping
, Composite Columns - ANSWERWhere structural steel columns are embedded
into the concrete core of a spiral column
Combined Columns - ANSWERWhere structural steel is encased in concrete of
at least 7 cm thick, reinforced with wire mess surrounding the column at a distance of 3
cm inside the outer face of the concrete cover
Lally Columns - ANSWERare fabricated steel pipes provided with flat steel plates which
holds a girder or girt, and is filled with grout or concrete to prevent corrosion
Dowel Bars - ANSWERAre short bars used to transfer the stress at the bottom of the
columns to the footings
Beam - ANSWERMay be defined as a structural member, resting on supports usually at
its ends, which supports transverse loads
Simple Beams - ANSWERThese are beams having a single span with a support at each
end, there being no restraint at the supports
Cantilever Beams - ANSWERThese are beams that are supported at one end only, or
they may be that portion of beams projecting beyond one of its supports
Continuous Beams - ANSWERThese are beams resting on more than two
supports
Cast-in-place Beam - ANSWERConcrete beams that are almost always formed and
placed along with the slab they support
90, 135, or 180 degrees - ANSWERStandard hooks for reinforcing bars
Bent Bars - ANSWERLongitudinal bars bent to an angle of 30degrees or more with the
axis of a concrete beam perpendicular to and intersecting the cracking that could occur
from diagonal tension
Rectangular Beams - ANSWERWhat kind of beam?
T-Beams - ANSWERWhen a reinforced
concrete floor slab and its supporting
beam (or girder) are built at the same
time and thoroughly tied together, a
part of the slab may be considered to
act with upper part of the beam in
compression
Beam with Compression Reinforcement - ANSWERThese are beams with
CONSTRUCTION QUESTIONS &
ANSWERS(RATED A+)
One Way Slab - ANSWERProbably the most commonly used type or reinforced
concrete
construction consists of a solid slab supported by two parallel beams,
the beams framing into girders, and the girders in turn framing into
columns. The reinforcement slabs runs in one direction only, from beam to beam
One Way Joist Slab - ANSWERConsists of relatively small adjacent T-beams.
When the open spaces between the webs or rings are filled with clay tile, gypsum tile,
concrete filler block or
steel forms, the floor system is called a?
Two Way Slab - ANSWERWhen a floor panel is square or nearly so, having beams or
walls on four sides, it is generally economical to use two sets of reinforcing bars placed
at right angles to each other. These bars in two directions transfer the loads to the four
supporting beams or walls.
Two Way Waffle Slab - ANSWERis a two way concrete slab reinforced by ribs in two
directions. These slabs are able to carry heavier loads and span longer distances than
flat slabs.
Two Way Flat Plate - ANSWERIs a concrete slab of uniform thickness reinforced in two
or
more directions and supported directly by columns without beams or girders
Two Way Flat Slabs - ANSWERIs a flat plate thickened at its column supports to
increase its shear strength and moment-resisting capacity
Short Columns - ANSWERType of concrete columns occur when the unsupported
height is not greater than ten times the shortest lateral dimension of the
cross section.
Large Columns - ANSWERType of concrete columns occur when the unsupported
height is more than ten times the shortest lateral dimension of the cross
section.
Tied Columns - ANSWERThese are columns with longitudinal bars and lateral ties.
Spiral Columns - ANSWERThese are columns with longitudinal bars and closely spaced
continuous spiral hooping
, Composite Columns - ANSWERWhere structural steel columns are embedded
into the concrete core of a spiral column
Combined Columns - ANSWERWhere structural steel is encased in concrete of
at least 7 cm thick, reinforced with wire mess surrounding the column at a distance of 3
cm inside the outer face of the concrete cover
Lally Columns - ANSWERare fabricated steel pipes provided with flat steel plates which
holds a girder or girt, and is filled with grout or concrete to prevent corrosion
Dowel Bars - ANSWERAre short bars used to transfer the stress at the bottom of the
columns to the footings
Beam - ANSWERMay be defined as a structural member, resting on supports usually at
its ends, which supports transverse loads
Simple Beams - ANSWERThese are beams having a single span with a support at each
end, there being no restraint at the supports
Cantilever Beams - ANSWERThese are beams that are supported at one end only, or
they may be that portion of beams projecting beyond one of its supports
Continuous Beams - ANSWERThese are beams resting on more than two
supports
Cast-in-place Beam - ANSWERConcrete beams that are almost always formed and
placed along with the slab they support
90, 135, or 180 degrees - ANSWERStandard hooks for reinforcing bars
Bent Bars - ANSWERLongitudinal bars bent to an angle of 30degrees or more with the
axis of a concrete beam perpendicular to and intersecting the cracking that could occur
from diagonal tension
Rectangular Beams - ANSWERWhat kind of beam?
T-Beams - ANSWERWhen a reinforced
concrete floor slab and its supporting
beam (or girder) are built at the same
time and thoroughly tied together, a
part of the slab may be considered to
act with upper part of the beam in
compression
Beam with Compression Reinforcement - ANSWERThese are beams with
