21. Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than
22. The individual variation between test strength of sample should not be more than
23. Workability of concrete is inversely proportional to
24. For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine’s theory
25. To determine the modulus of rupture, the size of test specimen used is
26. High carbon content in the steel causes
27. The slab is designed as one way if the ratio of long span to short span is
28. A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D) is less than
29. According to IS : 456-1978, minimum slenderness ratio for a short column is
30. Maximum percentage reinforcement in case of slabs is limited to
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