Wooden Staircases
The central post is composed of plank strips connected to each other by through-joints. These, together with the treads, form angled steps, which are joined with a tongue and glue. The balusters with the laminated handrail are screwed to the joints. 2. Spiral staircase made of glued, veneered stringers and handrail with mortised angled steps, which are additionally visibly screwed in place. 3. Stringer staircase with a hexagonal floor plan in a church in Denmark. Architects Rolf Graa and Richard Aas. Constructed in solid oak. The stringer sections are connected to each other by finger joints; the treads are mortised into the stringers and tenoned into the solid column.
