If the porosity of a soil sample is 20%, the void ratio is

Lysimeter and Tensiometer are used to measure respectively, one of the following groups of quantities:

Hyetograph is a graph representing

A prestressed concrete rectangular beam of size $$300\,\,mm \times 900\,\,mm$$ is prestressed with an intial prestressing force of $$700$$ $$kN$$ at an eccentricity of $$350$$ $$mm$$ at midspan. Stress at top due to prestress alone, in $$N/m{m^2}$$ is