المحاضرة التاسعة عشر : مقدمة عن بلاطات القوالب المفرغة https://youtu.be/LRdqk_C0QmM المحاضرة العشرون : البلاطات المفرغة في الاتجاه الواحد https://youtu.be/PTnOdpH9pgI المحاضرة الحادية والعشرون : البلاطات المفرغة في الاتجاهين https://youtu.be/94BX_1Qi5gY المحاضرة الثانية والعشرون : الكمرات المدفونة https://youtu.be/MoajLxlVmKg المحاضرة الثالثة والعشرون : نمذجة البلاطات المفرغة على الريفيت https://youtu.be/ess87oGrITk م. أحمد جمال عبد الجواد

1. CHAPTER 8: HOLLOW BLOCK SLABS

2. CONTENTS
Hollow and ribbed slabs
Introduction to hollow block slabs
Design of one way HB slabs
Design of two way HB slabs
Design of beams carrying HB slabs
Chapter 8 Problems

3. HOLLOW AND RIBBED SLABS
Hollow core
Ribbed slab
Hollow block
Waffle slab

4. INTRODUCTION TO HOLLOW BLOCK SLABS
Components:
1- Solid slab
2- Ribs
3- Blocks
4- Solid part

5. INTRODUCTION TO HOLLOW BLOCK SLABS
Types:
1- One way
2- Two way
3- Cantilever

6. DESIGN OF ONE WAY HB SLABS
Choosing of thickness

7. Calculation of loads
DESIGN OF ONE WAY HB SLABS

8. Taking a 1m strip
DESIGN OF ONE WAY HB SLABS

9. Design against moment
DESIGN OF ONE WAY HB SLABS

10. Solid part
DESIGN OF ONE WAY HB SLABS

11. Details of RFT
DESIGN OF ONE WAY HB SLABS

12. Condition
DESIGN OF TWO WAY HB SLABS

13. Choosing of thickness
DESIGN OF TWO WAY HB SLABS

14. Calculation of loads
DESIGN OF TWO WAY HB SLABS

15. Rectangularity
DESIGN OF TWO WAY HB SLABS

16. Taking 1m strips at the two directions
DESIGN OF TWO WAY HB SLABS

17. Design against moment
DESIGN OF TWO WAY HB SLABS

18. Solid part
DESIGN OF TWO WAY HB SLABS

19. Details of RFT
DESIGN OF TWO WAY HB SLABS

20. Load calculation
DESIGN OF BEAMS CARRYING HB SLABS

21. Projected beam
DESIGN OF BEAMS CARRYING HB SLABS

22. Embedded (Hidden) beam
DESIGN OF BEAMS CARRYING HB SLABS

23. CHAPTER 8 PROBLEMS
(1) Design the one way
hollow blocks slabs
shown in figure.
Use Fcu=25 N/mm2,
Fy=360 N/mm2,
F.C.=1.5 KN/m2,
L.L.=2 KN/m2.

24. CHAPTER 8 PROBLEMS
(2) Design the shown
slabs S1 & S2 and
draw details of RFT.
Use Fcu=25 N/mm2,
Fy=360 N/mm2,
F.C.=1.5 KN/m2,
L.L.=2 KN/m2.

25. REFERENCES
Design of R.C. Structures, Eng. Ahmed Gamal Abdel Gawad.
Lectures in Reinforced Concrete, Eng. Yasser Elleathy.
Design of Reinforced concrete, Dr. Magdy A. Tayel.
Design of Reinforced Concrete Structure II, D. Mashhour A. Ghoneim.
Reinforced Concrete, Dr. Nasr Younis.

26. ‫الدعاء‬ ‫أسألكم‬