Consider the following statements from IS 456 ∶ 2000 code
A. The standard deviation for M 15 concrete is 4.0 N/mm2 in case of concrete mix.
B. A minimum 2 samples should be tested for 15 m3 of concrete.
C. Basic value of span to effective depth ratio for a cantilever beam up to 10 m is 7.
D. Design bond stress for M35 concrete in limit state method for plain bars in tension is 1.5 N/mm2.
Which of the above-mentioned statements is/are incorrect?
1
A and B only
2
B and D only
3
A and D only
4
B and C only