The live load taken for the design of roof of an industrial building using truss which is accessible, is

Type of Roof

Uniformly Distributed Imposed load Measured on Plan area

Minimum Imposed Load Measured on Plan

1. Flat, sloping, or curved roof with slopes up to and including to degrees.

(a) Access provided

1.5 kN/m²

3.75 kN uniformly distributed over any span of one-meter width of the roof slab and 9 kN uniformly distributed over the span of any beam or truss or wall

(b) Access not provided except for maintenance

0.75 kN/m²

1.9 kN uniformly distributed over any span of one-meter width of the roof slab and 4.5 kN uniformly distributed over the span of any beam or truss or wall

2. Sloping roof with a slope greater than 10 degrees

For roof membrane sheets or put-line, 0.75 kN/m² less 0.02 kN/m² for every degree increase in slope over 10 degrees

Subject to a minimum of 0.4 kN/m²