$$IS$$ $$456$$-$$2000$$ recommends providing certain minimum steel in a $$RCC$$ beam

Grading of aggregate in a concrete mix is necessary to achieve

A beam fixed at the ends and subjected to lateral loads only is statically indeterminate and the degree of indeterminacy is

The fixed end moment of a uniform beam of span $$l$$ fixed at the ends, subjected to a central point load $$P$$ is