1. Atop Lego Chief Engineer (SID&P) PWD, AP
Confined Masonry
Atop Lego
Chief Engineer (SID&P)
PWD, AP

2. What is Confined Masonry
Confined masonry construction consists of masonry wall and horizontal and vertical RC confining members built on four side of masonry wall.
Vertical members called as tie column or practical column resemble to RC frame construction.
Horizontal element are called as tie beam resemble to beam in RC frame construction.

3. Typical Confined Masonry Building

4. Typical Confined Masonry Building

5. Confined Masonry Building are adopted worldwide

6. Confined Masonry Building are adopted worldwide

7. Confined Masonry Building are adopted worldwide

8. Response of wall to seismic force

9. Response of wall to seismic force

10. What will happen in an Earthquake if it is not confined

11. How Confined Masonry Resist Earth quake
Under earthquake quake shaking, the masonry acts as compressive diagonal struts and the RCC confining element act as tension and compression member.
The RCC element grip the whole width of the wall at the door and window opening and prevent damage of wall.

12. Performance of Confined Masonry Building in Past Earthquake
Low rise ( one to two) storey confined masonry Building have performing very well in Latin America in recent earthquakes.
Confined masonry performed well in EL Salvador Earthquake of January 13 and February 13,2001 (Magnitude 7.7 and 6.6). 90% of the building constructed with confined masonry did not collapse.

13. Performance of Confined Masonry Building in Past Earthquake
Performance of confined masonry building in August 2007, Pisco Peru Earthquake.
a). Six story confined masonry building remained undamaged.
b). Collapse of a confined masonry building due to soft story effect

14. Construction of confined Masonry Buildings

15. Construction of confined Masonry Buildings

16. Construction of confined Masonry Buildings

17. Construction of confined Masonry Buildings

18. Construction of confined Masonry Buildings

19. Construction of confined Masonry Buildings

20. Construction of confined Masonry Buildings

21. Construction of confined Masonry Buildings

22. Construction of confined Masonry Buildings

23. Construction of confined Masonry Buildings
Construction upto sill level

24. Construction of confined Masonry Buildings
Construction upto lintel level

25. Construction of confined Masonry Buildings
Construction upto Roof level

26. Measurement of Materials

27. Measurement of Materials

28. Isolated stone masonry Building Proposal

29. References:
1. “Build a Safe House with CONFINED MASONRY” by Kamu Iyer, C.V.R. Murty, Shibani M. Kulkarni, Rupesh Goswami, Shantanu Subramaniam and A.R. Vijayanarayanan. (Gujarat State Disaster Management Authority, Government of Gujarat)

30. Thanks for your attention