A circular beam section is subjected to a shear force of 40 π kN. The maximum shear stress allowed in the material is 6 MPa. Calculate the safe diameter of the section, assuming a factor of safety equal to 2.

The minimum density (g/cc) of corrugated and semi-corrugated asbestos cement sheets considered acceptable for construction purposes by the Indian standard is:

The actual discharge of liquid through an orifice is determined by multiplying ideal discharge by a factor called coefficient of discharge. The coefficient of discharge is given by __________.