1. Dr S.Sreenath PhD, MSc Engg, MSc (ICM), MBA
Rebar
Dr S.Sreenath PhD, MSc Engg, MSc (ICM), MBA

2. Reinforced Concrete
Reinforced concrete is a combination of both steel and concrete using the best properties of each.
Compressive strength of concrete.
Tension strength of steel.
Title of presentation

3. Types of Rebar Mild steel High yield deformed steel
Title of presentation

4. Mild steel Grade 250 reinforcement complying to BS4449.
Title of presentation

5. Mild Steel
Title of presentation

6. Mild Steel
Title of presentation

7. Stress - Strain Graph
Title of presentation

8. Stress – Strain Curve of Mild Steel
Title of presentation

9. High yield deformed steel
Increase in yield strength meant that the assured load bearing capacity enables a more efficient and simplified reinforcement detailing, translating to material cost savings.
A high level of ductility ensures that high strength steel can better withstand bending tests with no visible fractures or cracks.
Grade 460 reinforcement complying with BS 4482.
Title of presentation

10. Title of presentation

11. Stress – Strain Curve of High Strength Steel
Title of presentation

12. Title of presentation

13. May 2009
Title of presentation

14. Rebar Markings 4 T 25 01 – 125 4 – Number of bars T – Type of steel
25 – Diameter of bars
01 – Bar mark of bar
125 – Spacing of bars
Title of presentation

15. Fabric Reinforcement
Title of presentation

16. Advantages of Welded Mesh
Flexibility and controlled manufacturing to suit any structural requirement either in flat sheet or shaped form.
High and consistent quality welded mesh delivered just-in-time to site.
Improved site productivity with reduced reliance on manpower on-site.
Material wastage is controlled and reduced.
Reduced cost due to enhanced speed of construction.
Better utilisation of on-site space and logistics.
Welded mesh conforms to SS 18:1999, SS 32:1999, BS 4482:1985, BS4483:1998 or AS/NZS 4671:2001.
Title of presentation

17. Wall and Slab Mesh
Title of presentation

18. Drain Mesh
Title of presentation

19. Pilecap Mesh
Title of presentation

20. Precage column
Title of presentation

21. Lift Lobby and Staircase Mesh
Title of presentation

22. May 2009
Title of presentation

23. Ordering of Material Standard straight bars.
Cut – to- length and Cut-bent steel bars.
Title of presentation

24. Transport of Steel Reinforcement
Risk due to transport.
Risk due to lifting.
Risk due to storage.
Title of presentation

25. Title of presentation

26. May 2009
Title of presentation

27. Title of presentation

28. Title of presentation

29. Title of presentation

30. Title of presentation

31. Limit State Design Factor of Safety.
Permissible stress – Ultimate strength / FS
Load Factor Method – Working load X FS
Limit State Method – Working load X Partial Factor of safety and also Ultimate strengths are divided by further partial factors of safety.
Title of presentation

32. Limit State
A condition at which a structure becomes unfit for its intended use.
Ultimate Limit State – This requires that structure must be able to withstand the designed loads with an adequate factor of safety against collapse.
Serviceability Limit State – Deflection, Cracking and Durability.
Title of presentation