2. 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).
3. If the slenderness ratio of a column is more than 160, the compressive stress obtained by the secant formula is multiplied by a factor in which value of x is
5. If the ratio of effective span to overall depth of a simply supported beam is equal or greater than 1 but less than or equal to 2, the lever arm, is