Which of the following measures are resorted to for strengthening masonry walls ?1. Provide cross walls.2. Pre-stressing.3. Provide gunite slab on the surface(s) of walls.4. Provide buttresses.Select the correct answer using the code given below :

Which of the following measures are resorted to for strengthening maso

1.	Which of the following measures are resorted to for strengthening masonry walls ?1. Provide cross walls.2. Pre-stressing.3. Provide gunite slab on the surface(s) of walls.4. Provide buttresses.Select the correct answer using the code given below :
A.	1, 3 and 4
B.	1 and 2
C.	2 and 3
D.	1, 2, 3 and 4
Answer» B. 1 and 2

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Which of the following measures are resorted to for strengthening masonry walls ?1. Provide cross walls.2. Pre-stressing.3. Provide gunite slab on the surface(s) of walls.4. Provide buttresses.Select the correct answer using the code given below :

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