1. Presented by :Presented by :
F R Khan M.Engg (AIT)F R Khan M.Engg (AIT)
Managing DirectorManaging Director
BNS Real Estate LimitedBNS Real Estate Limited
March 20, 2010March 20, 2010
ConceptsConcepts
ofof
Real Estate BusinessReal Estate Business

2. What we offer to Client ?What we offer to Client ?
• Goods :Goods :
1. A1. A Safe StructureSafe Structure following all Rules (Codes)following all Rules (Codes)
2. An effective & efficient Architectural Layout2. An effective & efficient Architectural Layout
3. All related infra Structure for a Living Comfort3. All related infra Structure for a Living Comfort
• Services :Services :
1. An efficient & Trust worthy Salesmanship1. An efficient & Trust worthy Salesmanship
2. After Sale Service for the lifetime2. After Sale Service for the lifetime
3. Any Service within Ethical way to Satisfy Client3. Any Service within Ethical way to Satisfy Client
• Earn Client Confidence :Earn Client Confidence :

3. Who are the CLIENTS ?:
Receive Side:
Land Owner
Purchaser
Supply Side:
Material
Human resource
CONCRETE
Taka 2
crore
8000lb
WT.
20inch
20inch

4. Stain:
General Technical
CONCRETE
8000lb
WT.
MAN
80lb WT.
5.982 ft
6.00 ft
Deformation=6.0 ft – 5.982 ft = 0.018 ft
Strain=Deform/ Original = 0.018 ft /6 ft
= 0.003
Deformation=10.0 ft – 9.97 ft = 0.03 ft
Strain=Deform/ Original = 0.03 ft /10 ft
= 0.003
9.97 ft10.00 ft

5. V
HH
V

6. NEUTRAL AXIS (WITH LOAD)
Forces
THE FORCE DUE TO BENDING (NO LOAD)

7. Stress TypesStress Types
V
H
M

8. The Basics of MechanicsThe Basics of Mechanics
CIVIL ENGINEERING STRUCTURESCIVIL ENGINEERING STRUCTURES
MUST SATISFYMUST SATISFY THREETHREE CONDITIONSCONDITIONS
TO REMAIN STATIC:TO REMAIN STATIC:
1.1. Summation ofSummation of H=0H=0
2.2. Summation ofSummation of V=0V=0
3.3. Summation ofSummation of M=0M=0

9. The Frame StructureThe Frame Structure

10. A Building Basic Frame : ResistA Building Basic Frame : Resist
• The FoundationThe Foundation
(PILE,FOOTING,RAFT,CASSION)(PILE,FOOTING,RAFT,CASSION)
• The Tie of Foundation (GRADE BEAM)The Tie of Foundation (GRADE BEAM)
• The Vertical Load Bearing MembersThe Vertical Load Bearing Members
(COLUMN, WALLS)(COLUMN, WALLS)
• The Horizontal Load Bearing MembersThe Horizontal Load Bearing Members
(BEAM, COLUMN STRIP,SLAB)(BEAM, COLUMN STRIP,SLAB)

11. The Loads : Imposed onThe Loads : Imposed on
• The Vertical LoadsThe Vertical Loads : In Various Form: In Various Form
-Dead-Dead
-Live-Live
• The Horizontal LoadsThe Horizontal Loads : In Various Form: In Various Form
-Wind-Wind
-Earthquake-Earthquake
• The Bending LoadsThe Bending Loads : In Various Form: In Various Form
-Deflection-Deflection
-Natural Causes-Natural Causes

12. What RCC actually is ?What RCC actually is ?
• Basically Two Heterogonous materialBasically Two Heterogonous material
• One Can take enormous COMPRESSIONOne Can take enormous COMPRESSION
but Cannot take any TENSIONbut Cannot take any TENSION
• Other can take enormous TENSIONOther can take enormous TENSION
but Can take limited COMPRESSION duebut Can take limited COMPRESSION due
to its slender shapeto its slender shape
So ONESo ONE REINFORCESREINFORCES thethe OTHEROTHER
Like a marriage both has ONE commonLike a marriage both has ONE common
CHILDCHILD

13. The Concrete : Can take 6,000 psiThe Concrete : Can take 6,000 psi
Compression aloneCompression alone
The Basic Materials :The Basic Materials :
1.The Coarse Aggregate
(Boulder/Brick/Shingle/Iron/POTATO
CHIPS
3.The CEMENT for BINDING the Aggregates, invisible
upon the Process of Hydration
2.The Fine Aggregate (Local Sand/Sylhet Sand/Dust Sand)
The ROUND shape Aggregate SLIPS upon BONDING
The FLICK shape Aggregate may BREAK upon Load
Different Sizes

14. The Concrete Failure Pattern :The Concrete Failure Pattern :
• FailureFailure
ShearShear
PlanePlane
Possible Reasons of Failure
:
1. Aggregate Failure by CRUSHING
2. Mortar Failure by LOW Binding of CEMENT
3. Combined Failure of No.1 & No.2
4. A SLIP BOND Failure of Coarse
Aggregate5. A VACCUM or SLIT Dead Aggregate failure
LOAD
Miss
To note : Concrete Crushes with NO Warning

15. The Steel : Can take 70,000 psiThe Steel : Can take 70,000 psi
Tension aloneTension alone
• Steel bars can take Equal CompressionSteel bars can take Equal Compression• Steel bars can take Equal CompressionSteel bars can take Equal Compression
Tie Rods
Main Rods
Provided :
1. They are properly Tied
2. They are CONFINED

16. Like a marriage both has ONELike a marriage both has ONE
common CHILDcommon CHILD
If CONCRETE is REINFORCED withIf CONCRETE is REINFORCED with
STEEL BAR we can get a STRONSTEEL BAR we can get a STRON
but ECONOMICbut ECONOMIC
Structural Member for taking any kindStructural Member for taking any kind
of LOADof LOAD
If CONCRETE is REINFORCED withIf CONCRETE is REINFORCED with
STEEL BAR we can get a STRONSTEEL BAR we can get a STRON
but ECONOMICbut ECONOMIC
Structural Member for taking any kindStructural Member for taking any kind
of LOADof LOAD
Although Heterogonous, BOTH has a Balance STRAIN =Although Heterogonous, BOTH has a Balance STRAIN =
0.0030.003

17. That is Reinforced (Steel) CementThat is Reinforced (Steel) Cement
Concrete we use :Concrete we use :
SteelSteel
ConfineConfine
Note :
1. Under Ground Clear Cover is DOUBLE 3”
2. As Long Design Strength & Durability
is Confirmed, ingredients can be many
Combination
3. In Pile Foundation, it is CONFINED by
surrounding SOIL
An ENGINEER however should NOT confine
Himself in Single most practice

18. Case Study : The Shopping MallCase Study : The Shopping Mall
• Please watch the very special VideoPlease watch the very special Video
Carefully……..Does really WHAT canCarefully……..Does really WHAT can
make a FAILURE ?make a FAILURE ?

19. THANK YOUTHANK YOU
PLEASE DISCUSSPLEASE DISCUSS
Time: 4:00 pmTime: 4:00 pm