Calculate imposed load on roof truss of span 20m with slope of 20^o.(a) 0.75 kN/m^2(b) 0.95 kN/m^2(c) 0.45 kN/m^2(d) 0.55 kN/m^2This question was addressed to me during an interview for a job.Question is taken from Characteristic Loads in chapter Structural Analysis, Loading and Load Combinations of Design of Steel Structures

Calculate imposed load on roof truss of span 20m with slope of 20^o.(a

1.	Calculate imposed load on roof truss of span 20m with slope of 20^o.(a) 0.75 kN/m^2(b) 0.95 kN/m^2(c) 0.45 kN/m^2(d) 0.55 kN/m^2This question was addressed to me during an interview for a job.Question is taken from Characteristic Loads in chapter Structural Analysis, Loading and Load Combinations of Design of Steel Structures
Answer» Right OPTION is (d) 0.55 kN/m^2 For explanation I would say: As per IS 875, for roofs of SLOPE greater than 10^o, the imposed load is REDUCED by 0.02 kN/m^2for every degree RISE in slope. Therefore, Imposed load = 0.75 – 0.02*(20^o-10^o) = 0.55 kN/m^2.

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