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1. REINFORCED CONRETE (1)
(CE 411)
Chapter1
Introduction
Instructor:
Eng. Abdallah Odeibat
Civil Engineer, Structures , M.Sc.
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2. TYPICAL STRUCTURE
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3. TYPICAL STRUCTURE
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4. 4

5. 5

6. 6

7. HW: DEFINE THE FOLLOWING
 Beam
 Column
 Slab
 Frames
 Walls
 Footing 7

8. LOADS
 Dead Loads
 Live Loads
 Environmental Loads:
• Snow
• Wind
• Temperature
• Earthquake
• Service (working) loads: the actual loads that are
assumed to be applied to a structure when it is in service.
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9. TYPICAL LOADS PATH
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10. SERVICEABILITY AND STRENGTH
 Serviceability :Deflections, cracks, and vibration.
(water tanks, hospitals and mechanical structures)
 Strength : carrying capacity.
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11. STRUCTURAL SAFETY
Margin of safety is required due to:
 Actual load values may differ from assumed.
 Actual load distribution may differ from assumed.
 Analysis assumptions and simplification.
 Actual structural behavior may differ from assumed.
 Actual member dimensions and reinforcement may
differ from specified.
 Actual material strength may differ from specified. 11

12. STRUCTURAL SAFETY
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13. SAFETY PROVISIONS OF THE ACI CODE
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14. SAFETY PROVISIONS OF THE ACI CODE
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15. EXAMPLE 1:
 Design rectangular column to carry the following
service loads for its critical Ultimate (Factored)
Load:
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Load
(kN)
Dead 100
Live 60
Snow 25
Fluid 0
Soil Pressure Load 0
Rain 15
Wind 0
Temprature 0

16. EXAMPLE 1(CONT’):
U=1.2 D+ 1.6 L 216
U=1.4 (D+F) 140
U=1.2(D+F+T)+1.6(L+H)+0.5(Lr or S or R) 228.5
U=1.2 D+1.6 (Lr or S or R)+(1.0 L or 0.8 W) 220
U=1.2 D +1.6 W + 1.0 L + 0.5(Lr or S or R) 192.5
U= 0.9 D+ 1.6 W+ 1.6 H 90
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17. EXAMPLE 2:
 Design Simply Supported rectangular beam of 4.0
m length to carry the following service loads for
its critical Ultimate Load:
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Load
(kN/m) Moments (kN.m)
Dead 8 16
Live 20 40
Snow 0 0
Fluid 0 0
Soil Pressure Load 0 0
Rain 0 0
Wind 0 0
Temprature 0 0

18. EXAMPLE 2(CONT’):
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U=1.2 D+ 1.6 L 41.6 83.2
U=1.4 (D+F) 11.2 22.4
U=1.2(D+F+T)+1.6(L+H)+0.5(Lr or S or R) 41.6 83.2
U=1.2 D+1.6 (Lr or S or R)+(1.0 L or 0.8 W) 29.6 59.2
U=1.2 D +1.6 W + 1.0 L + 0.5(Lr or S or R) 29.6 59.2
U= 0.9 D+ 1.6 W+ 1.6 H 7.2 14.4

19. SAFETY PROVISIONS OF THE ACI CODE
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20. 20

21. DESIGN
 Is the determination of the general shape and
all specific dimensions of a particular structure
so that it will perform the function for which it
is created and will safely withstand the
influence that will act on it throughout its
useful life.
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22. NOMINAL STRENGTH
 Determine nominal strength required for the
mentioned previously members in examples 1 & 2 .
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