Presentation on Slab, Beam & Column

PRESENTATION
ON
BEAM , SLAB , COLUMN

Presented By : Group-05 Year : 2nd, Sem : 2nd
Name of the Group Members :
 MOHAMMED NASIL AFTAD – 12-01-03-141
 MD. MOHIBUL HASAN – 12-01-03-112
 SAFFAT RABBY MUNAYEM – 12-01-03-106
 MD. MUSABBIR AHMED – 12-01-03-156
 MD. MYNUL KARIM – 12-01-03-126
 MAKSUDUR RAHMAN – 12-01-03-146
 BISWAJITH DEB RAHUL – 12-01-03-120
 SHARMIN SIDDIKA – 12-01-03-131
 AFSANA KHAN – 12-01-03-151
 S.M. TOWFIQ ISLAM – 11-02-03-047

 Column is a vertical
structural member
 It transmits the
load from
ceiling/roof slab
and beam,
including its self-weight
to the
foundation.

Long
Column/
Slender
Short
Column
Intermediate
Column

Horizontal
member of a
structure
Carries
transverse loads

SIMPLY SUPPORTED
BEAM
OVERHANGING BEAM CANTILEVER BEAM
FIXED BEAM PROPPED
CONTINUOUS
BEAM

 It is a flat
horizontal
surface
 It is supported by
beam and
column
 It transfers load
to the beam

GRANAIT
MARBEL
CONCRETE
•*ONE WAY * TWO WAY * FLAT * BEAM
*RIBBED
WOODEN

 1. U.D.C. CONSTRUCTION
TEJGAON INDUSTRIAL AREA, DHAKA
 2. RANGS BABYLONIA
TEJGAON INDUSTRIAL AREA, DHAKA
 3. RESIDENTIAL AREA
BASUNDHARA RESIDENTIAL AREA , DHAKA

Vibrator
Cutter
Mixing Machine

 A rectangular
column must
have at least 4
reinforcements
at 4 corners

Circular column
should have
minimum 6
reinforcements
Reinforcement
should be min 1%
and max 8%

 It is done when
length of
reinforcement bar
is small but we
need longer
reinforcement
 Provided in mid
span
 Tied with hooks

 Columns have closed
lateral ties spaced
approximately
uniformly across the
column
 Resist shear force
and bursting out
effect
 10mm Ø, 12mm Ø
bars are used

Normal
spacing = S
in mid span
Spacing
near support
joint = S/2

Used to
resist
expansion
The hooks
shall be bent
to 135º

Must be leak
proof, smooth
inside and
properly aligned
Should be
maintained 1.5
in clear cover

 Concrete is
casted in two lifts
 It should not be
casted from more
than 5 feet high
to avoid concrete
segregation

 Compaction is done by
vibrator
 Construction joints are
provided for better
bonding between new
and old concrete
 Formwork is removed
after 3 days

Provides water
for hydration
reaction
 Increases the
strength up to
2.5 times
Done for 21 days
Gunny bags are
used for curing

STEEL FORMWORK WOODEN FORMWORK

A min. of 0.2% bar
is to be provided
for the
compression in
order to take care
of the deflection
 Extra tops are used
in the support
joints

Used to resist
shear and
diagonal tension
stresses in a
beam
Shall be minimum
size of 8mm ∅ in
case of lateral
load resistance

Alternate hook is
provided
The hooks shall
be bent to 135º
Stirrup
distribution is
dense near
support

Casting and
Curing are done
simultaneously
for beam and
slab.
Casting of lower
part is done
earlier

Side of
formwork is
removed after
3 days
Bottom part is
removed after
21-28 days

Steel Formwork Wooden Formwork

Slab
reinforcement
includes straight
bar , cranked bar
Extra tops near
the supports

Mainly 1.5 "
clear cover is
maintained
CC blocks are
used

 Compaction is
done with Patta

 Curing : It is done
for 21 days
 Removal of
Formwork: After
21 days formwork
is removed

Presentation on Slab, Beam & Column

Presentation on Slab, Beam & Column

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