Structural Design Specifications - Section 1 (3)

The ratio of minimum compressive strength on 15 cm cubes prepared with the concrete of M 20 grade and M 40 grade, at 7 days should be at least

The over all depth of a solid slab is 20 cm and effective depth is 15 cm. The horizontal distance between parallel main reinforcement should not be more than

If Δ is the deviation of the individual test strength from the average of n samples, the standard deviation of concrete of the given grade is

Pick up the correct precaution while spilicing the reinforcing bars

The distance between, rivet line and the nearest edge of a joint not exposed to weather, is taken (where t is thickness in mm of the thinner outside plate).

The reduced level of third floor of a building near a column is 205.350 m. The reduced levels of the undersides of four beams supporting the fourth floor framing into the column mutually perpendicular are 208.350 m, 208.450 m, 208.500 m and 208.550 m. The supported length of the column is

The maximum compressive strength on 15 cm cubes of M 20 grade concrete at 7 days, should be a minimum of

The cover to the main reinforced may be reduced up to one third of the specified cover but not less than