(BOISE AIR TERMINAL - CONCOURSE B EXPANSION - ROOF ACCESS STAIRWAY) This building is fire sprinklered to substitute for 1-hr fire-resistive construction. To construct a new roof access exterior stairway on the North side of "Concourse B Expansion". Work is to include a concrete slab on grade, concrete piers, steel columns, steel stair stringers, steel treads, and landings made of steel metal grating all per approved drawings, engineering, and plan review conditions on file. **CJW**