10.01.03.045 , T beam , WSD method : Singly and doubly reinforcement

1. Welcome To The Presentation Based
On T-beam :WSD Method Singly And
Doubly Reinforced

2. • Course Tile: Pre-stressed Concrete Sessional
• Course No. :CE 416
Presented by
Md. Muntasir Rahman
ID No. :10.01.03.045

3. T Beam
• Monolithically casted slab, part of slab act as a
part of beam
• Resist longitudinal compression force in a
positive moment zone and from a T-section

4. Figure : T beam

5. Taction
Where positive bending
moment occurs

6. Why T Beam occurs in +ve moment zone
In +ve moment zone T.Z situated in bottom part
and C.Z occurs in Top part .So ,The extra part
of slab Strengthen the C.Z

7. Type Based on Effective Flange Width

8. Type Based on Effective Flange Width
1)Beam having slabs on both sides
2)Beam having slabs on one side
3) Isolated beam

9. WSD method
The Design load is Actual load
Structure’s nominal Stress all should be in
the elastic limit

10. Steel Sress strain curve
The material Stress must be in the
elastic zone

11. WSD method
In WSD Method , Stress diagram always linear

13. Singly And Doubly Reinforced beam
From previous figure
• In singly Beam rebar is only in the tension
zone
• doubly reinforcement is in both tension and
compression zone ,because it can not develop
the compressive force to resist the maximum
moment .so, Additional rebar is added in the
C.Z

14. Design Procedure

15. Design Procedure

16. Design procedure

17. Design procedure