The document discusses different types of columns categorized by geometric shape, materials, and size. Geometric shapes include circular, rectangular, square, hexagonal, and octagonal. Material types are wooden, bamboo, concrete, steel, and composite. Columns are also classified as short or long based on size. Reinforcing, shuttering, casting, and curing steps are outlined for constructing concrete columns. Factors that can lead to column failure like segregation, bleeding, highly compressed concrete, and lacking support are also summarized.

3. TYPES OF COLUMN:
ACCORDING TO GEOMETRIC SHAPE:
CIRCULAR COLUMN
RECTANGULAR COLUMN
SQUARE COLUMN
HEXAGONAL COLUMN
OCTAGONAL COLUMN
ACCORDING TO MATERIALS:
WOODEN COLUMN
BAMBOO COLUMN
CONCRETE COLUMN
STEEL COLUMN
COMPOSITE COLUMN
ACCORDING TO SIZE:
SHORT COLUMN
LONG COLUMN

4. Types of column:
According to geometric shape:
Circular column
Rectangular column
Square column
Hexagonal column
Octagonal column
Circular column Rectangular column
Square column

5. According to materials:
Wooden column
Bamboo column
Concrete column
Steel column
Composite column
Wooden column Bamboo column
Steel columnConcrete column

6. According to size:
Short column
Long column
Short column
Long column

7. Reinforcing
Shuttering
Casting
Curing

8. Main bars
Dowel bars
10 mm dia stirrups
Foundation reinforcement

9. Beam to column jointFoundation to column joint
Column reinforcement Caker

10. Shuttering Shuttering in 1st step
Shuttering in 2nd step Wood in shuttering

11. Mixer machine Concrete mix Vibrator
Casting in 1st step After casting of 1st
step
Casting of 2nd step

12. Gunny bag
Curing of columnCuring of 1st step

13. Factors that affect in failure:
Segregation
Bleeding
Highly compressed concrete
Lacking of supports

14. Segregation:
Segregation can be defined as separation of constituents of a
heterogeneous mixtures so that their distribution is no longer
uniform.
Bleeding:
Bleeding is form of segregation in which some of water in
concrete mix tends to rise to the surface of freshly placed concrete.
Highly compressed concrete:
If concrete is highly compressed then it has possibility to
failure.
Lacking of support:
For lacking of support columns can fail.

15. Different types of failure in column

16. Now a days spirally reinforced columns are frequently used
instead of tied columns. It gives greater toughness and
ductility.
Spirally reinforced columns Tied column

17. Before construction of a building we must think over
the availability of raw materials and the economical
opportunities. But when enough money is invested , it
is easy to select suitable raw material. So considering
all sides building should be constructed for making
the world worthy of living.

18. THANKS TO ALL

19. References:
1.Teasure of R.C.C design
-Susil Kumar
2.How to built a nice home
-Eng. Md. Ibrahim
3.Building construction & Management with CPM
-Eng. Md. Ali Siddiquee
4.A text book of eng. Materials
-Dr. M. A. Aziz
5.Reinforced concrete design
-Leet Bernal
6.Design of concrete structure
-Nilson Darmin Doolan
7.Building construction hand book
-R. Chudley
8.Construction place- National Tower
26,Ahsan ahmed road, Khulna
Name of eng. M.N. Abdul Gofran