EARTHQUAKE RESISTANCE OF LOAD BEARING STRUCTURES

2005 NPEEE Earthquake Design Concept : Lecture 5: Earthquake Load on Simple

Buildings6/15

2005 NPEEE Earthquake Design Concept : Lecture 5: Earthquake Load on Simple

Buildings7/15

2005 NPEEE Earthquake Design Concept : Lecture 5: Earthquake Load on Simple

Buildings8/15

2005 NPEEE Earthquake Design Concept : Lecture 5: Earthquake Load on Simple

Buildings9/15

2005 NPEEE Earthquake Design Concept : Lecture 5: Earthquake Load on Simple

Buildings10/15

2005 NPEEE Earthquake Design Concept : Lecture 5: Earthquake Load on Simple

Buildings11/15

2005 NPEEE Earthquake Design Concept : Lecture 6: Seismic Design Philosophy &

Code Requirement13/16

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 14/23

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 15/23

Non-engineered constructions… mere death traps

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 18/23

1

2

3

5

4

6

7

8

910

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 20/23

64 x 23x23/400 = 84.64 cm.

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 22/23

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 24/23

8 x 30 = 240 cm

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 25/23

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 26/23

2005 NPEEE Earthquake Design Concept : Lecture 10: Earthen & Stone Wall Building 27/23

two courses of burnt brick instead of adobe for resting of roof structure

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings29/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings30/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings31/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings32/30

Damage due to inadequate connection between the wall

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

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Mangalore tiles roof with out gable bend (BHUJ)

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

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Thick wall with small size rubble & no THROUGH _ STONE

Splitting of walls

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

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Lack of Structural Integrity….

Lack of proper connections capable of withstanding compression and tension forces between various building

components

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

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Out-of-plane Wall Weaknesses…..

Out-of-plane failures …………..•Due to inadequate wall-diaphragm anchorage & instability of

slender walls• Dynamic instability of long unsupported walls such as gable end

walls.

Separation of WythesGable & Cross Walls

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings37/30

• Loss of support for roof trusses and joists

Collapse of wall supporting roof structure

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings38/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings39/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings40/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings41/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings42/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

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•make slender piers undergo bending instead of rocking•resist horizontal E.Q. forces•Delay X cracking•Protect wall from sliding and collapsing

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings45/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings46/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings47/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings48/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings49/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings50/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings51/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings52/30

BHUJ EARTH QUAKE

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

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2

3

4

1

5

6

•overall shape and size of building•distribution of mass and horizontal lateral load

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings55/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings56/30

(L,T,E,Y shapes)

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings57/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings58/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings59/30

conclude...

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings60/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings61/30

2005 NPEEE Earthquake Design Concept : Lecture 11: Load Bearing Masonry

Buildings62/30

NPEEE- VERNACULARR STRUCTURAL SYSTEMSLEARNING EARTHQUAKE DESIGN AND STRUCTURE - C.V.R MURTHY, IIT KANPUR.

BIBILOGRAPHY-

GROUP MEMBERS-

AKANKSHA BALPANDE 1205GEETA GUJARATHI 1220SHREYA MAHAJAN 1235

POONAM WADKAR 1267