presentation on beam slab &column by rajkumar khinchi in sha shib college

1. PRESENTATION
ON
BEAM , SLAB , COLUMN

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

4. Long
Column/
Slender
Short
Column
Intermediate
Column

5. Horizontal
member of a
structure
Carries
transverse loads

6. SIMPLYSUPPORTED
BEAM
OVERHANGINGBEAM CANTILEVERBEAM
FIXEDBEAM PROPPED
CONTINUOUS
BEAM

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

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

9. SLAB
BEAM
COLUMN

10.  1. GEETANJALI GIRLS HOSTEL
D.I.G BUNGALOW
 2. RAVINDRA BHAWAN
 3. 1250 J.P HOSPITAL at TULSI NAGAR

11. Sand
Cement
Reinforcement

12. Vibrator
Cutter
Mixing Machine

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

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

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

17.  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

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

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

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

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

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

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

25. STEEL FORMWORK WOODEN FORMWORK

26.  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

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

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

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

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

32. Steel Formwork Wooden Formwork

33. BRACING
PROPS

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

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

36.  Compaction is
done with Patta

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