Grand Stair Tower
This grand staircase is the centerpiece for an addition to an old Swiss chalet-style house on the outskirts of Pittsburgh, set in park-like surroundings overlooking a pond. The corner columns of the staircase – 10×10’s – are broken about halfway up. The splice where the column halves meet is reinforced with a powder coated steel “sleeve”. The color of the steel is a close match to the color of the dark-stained Douglas fir treads, risers, and stringers. The treads are 3×14 and the risers 2×5. All material of the main components was specified as kiln dried clear Douglas fir. Mahogany caps conceal the necessary steel hardware. The stairs serve four floors of the house, including a top floor meditation room and a basement entry to the house from the garage at the basement level.