2. COURSE OUTLINE
2
GROUP: Architectural Students 6th Semester CB 351 SPRIING
2018
LECTURER: Prof. Dr. Hassan Mohamed El-Ghattas
LECTURES: Saturday, 08:30 ROOM # 005
T. ASSISTANTS: Eng.. Ahmed Najib
COURSE CONTENT
PART I R.C.
1. INTRODUCTION TO CONCRETE STRUCTURES
Materials and properties
Design methods and requirements
3. COURSE OUTLINE
3
2. PLANNING AND SELECTION OF RC STRUCTURAL SYSTEMS
3. LOADS AND INTERNAL FORCES
Loads
Load Distribution
Cases of loadings
4. ANALYSIS AND DESIGN OF RC SECTIONS
Flexure
Shear and Torsion
Introduction to Eccentric Sections
4. COURSE OUTLINE
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5. DESIGN AND DETAILING OF RC BEAMS
6. DESIGN AND DETAILING OF ONE-WAY SOLID SLABS
7. DESIGN AND DETAILING OF TWO-WAY SOLID SLABS
8. DESIGN OF RC COLUMNS
9. INTRODUCTION TO STAIRS DESIGN
10. PLANNING AND SELECTION OF STEEL STRUCTURAL SYSTEMS
11. DESIGN OF STEEL BEAMS
12. DESIGN OF COMPRESSION AND TENSION MEMBERS
13. DESIGN OF STEEL COLUMNS AND SUPPORTS
14. BOLTED & WELDED CONNECTIONS
15. SELECION OF CONSTRUCTION MATERIALS AND MAIN SYSTEMS
PART II STEEL
5. COURSE POLICY
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Late students are not admitted to the lecture.
Homework is due at the date and time announced in lecture.
No grade will be given for a late homework.
In case of a lost grade, the student is totally responsible to
bring his/her graded sheet(s) to have it recorded.
Students who do not fulfill at least 75% attendance, will not be
allowed to take their final examination.
6. REFERENCES
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Course notes: Are delivered during the lecture, including handout
materials such as solved problems, design charts, tables,…etc.
PART I R.C.
1. Essential books (text books / design codes):
1. Egyptian Code for Design and Construction of Reinforced Concrete
Structures 203-2018.
2. Design Aids and Examples in accordance with the Egyptian Code for
Design and Construction of Reinforced Concrete Structures ECP 203.
3. Egyptian Code of Steel LRFD 2008
2. Recommended books:
Mashhour Ghoneim and Mahmoud El-Mihilmy, "Design of
Reinforced Concrete Structures," vol.1,2, and 3,
7. ASSESSMENTS
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ASSESSMENT SCHEDULE
Assessment 1: 7th Week Written Exam
Assessment 2: 12th Week Witten Exam
Assessment 3: Continuous Assessments
Assessment 4: 16th Week Final written Exam
WEIGHTING OF ASSESSMENTS
Assessment 1: 7th Week Written Exam ………..………. 30%
Assessment 2: 12th Week Witten Exam ……………….. 20%
Assessment 3: Semester Work………….……..………. 10%
Assessment 4: Final written exam………..………….... 40%
Total 100%
9. INTRODUCTION, MATERIALS, AND PROPERTIES
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CONCEPT OF REINFORCED CONCRETE
Reinforced concrete is a logical union of two materials: plain
concrete, which possesses high compressive strength but little
tensile strength, and steel bars embedded in the concrete, which can
provide the needed strength in tension.
Simple beam under bending
10. INTRODUCTION, MATERIALS, AND PROPERTIES
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Concrete - No Useful Tensile Strength
Reinforcing Steel - Tensile Strength
– Similar Coefficient of thermal expansion
– Chemical Compatibility
– Adhesion Of Concrete To Steel
Sizes
Eleven Standard Diameters
6 , 8 , 1 0 , 1 2 , 1 4 , 1 6 , 1 8 , 2 0 , 2 2 , 2 5 , 2 8 , 3 2 , 4 0
Number refers bar diameter in mm
Types
Mild steel: Low carbon content and well defined yield point.
High-grade steel: Higher carbon content and not necessarily a well defined
yield point.
MATERILA PROPETRIES
OF STEEL
11. INTRODUCTION, MATERIALS, AND PROPERTIES
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MATERILA PROPETRIES
OF STEEL
Stress-Strain curve for
various types of steel
reinforcement bar.
Es = Initial tangent modulus
= 20,000 MPa (all grades)
12. INTRODUCTION, MATERIALS, AND PROPERTIES
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MATERILA PROPETRIES OF CONCRETE
Typical stress-strain curves from
uniaxial compression tests of
concrete are shown in Fig. The
curves are shown to have linear
relationships up to a stress of
approximately (0.4 fcu). The
maximum compressive strength
takes place at a strain εc of about
0.002, while the ultimate concrete
strain is approximately equal to
0.003.
Characteristic strength of concrete:
Is defined by the ECP Code as the failure compressive
strength of at least 95% of all standard cubes at 28 days.
13. INTRODUCTION, MATERIALS, AND PROPERTIES
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MATERILA PROPETRIES OF CONCRETE
Tensile Strength
Tensile strength fctr of concrete (cracking limit) is set by the ECP
Code to be: 2
N/mm
6
.
0 cu
ctr f
f
Modulus of Elasticity of Concrete
2
N/mm
4400 cu
c f
E
The value given by the ECP Code for the modulus of elasticity is
14. DESIGN METHODS AND REQUIREMENTS
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EGYPTIAN CODE OF PRACTICE (ECP 203-2007)
Why we need Code of practice?.
The need for a Code of practice can be referred to the
following:
1. The analysis is partly empirical.
2. Improving the design principles by theoretical and
experimental research.
3. The building code has to be legally adopted by a
governing authority.
15. DESIGN METHODS AND REQUIREMENTS
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Limit State Design and Working Stress Design Methods
The working stress design method focusing on
conditions at service loads (that is, when the
structure is being used).
The Limit State design method focuses on
conditions at loads greater than service loads,
when failure may be imminent.
16. DESIGN METHODS AND REQUIREMENTS
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Working Stress Design Method
Service loads are dead loads, live loads, wind loads, earthquake
loads, snow loads, earth pressure and water pressure.
Working stress method may be expressed by the following:
fact. ≤ [allowable stress, fall.]
Where,
fact. = an elastically computed actual stress, such as by using the
well known flexural formula .
I
y
M
A
P
fact
fall. = a limiting stress prescribed by a building code as a
percentage of the compressive strength fcu of concrete or of the
yield strength fy of the steel reinforcing bars.
17. DESIGN METHODS AND REQUIREMENTS
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Limit State Design Method
The service load is increased sufficiently by factors to
obtain the load at which failure is considered to be
imminent. This load is called the “Ultimate Load” or the
“Factored Load”.
The structure is then proportioned such that the limit
strength is reached when the factored load is acting.
The computation of this strength takes into account the
non-linear stress-strain behavior of concrete.
18. BASIC CONCEPTS OF DESIGN
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Flexure Stresses
C = T
M = C*(jd)
= T*(jd)
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The three stages of the beam:
Stage 1: Uncracked beam.
Stage 2: Service loading on the beam.
Stage 3: Beam failure.
BASIC CONCEPTS OF DESIGN
Stages of Beams
