frame spacibg ratio as per IS 875 (3)
Category:support request

as per is 875 part 3 , frame spacing ratio is c/c distance b/w frames divided by least overall dimension of frames / beams/girders perpendicular to the direction of wind.
Now my case has 2 columns spaced at 5 m c/c. The height of str. is 15m. c/c distance of windward and leeward frames is 9 m. The beam/floor levels are spaced 3m . As per my understanding , frame spacing ratio shall be 9 / 3 =3. as out of 5 and 3 m , 3m is min. Could anyone please help me on this.