WAC 51-50-3103. Temporary structures

3103.1 General. The provisions of this section shall apply to structures erected for a period of less than 180 days. Special event structures , tents, umbrella structures and other membrane structures erected for a period of less than 180 days shall also comply with the International Fire Code . Those erected for a longer period of time shall comply with applicable sections of this code. EXCEPTION: The building official may authorize unheated tents and yurts under 500 square feet (46 m 2 ) accommodating an R-1 Occupancy for recreational use as a temporary structure and allow them to be used indefinitely.