The 2x4 wood member located at the base of the staircase stringers which are notched to accept the member.
Ladder
The designation for a staircase in which the slope exceeds acceptable rise and run requirements.
A horizontal platform located between the upper and lower floors. Generally utilized to accomplish a change of staircase direction.
Mortised Stringer
A stringer in which recesses have been cut to accept treads and sometimes risers.
Newel
A large vertical member to which the handrail is attached. Newels supply the structural support for the balustrade. Primarily used on staircases that do not have walls surrounding them.
Nosing
The part of the tread that overhangs the face of the previous steps riser.
Notched Stringer
A stringer that has been cut out in saw-tooth pattern to support treads and possibly risers.
Open Riser
A staircase in which the vertical space between stair treads is left open.
Over-the-post Railing
A balustrade in which a continuous handrail is attached to the tops of newel posts.
Pinned Baluster
Manufactured balusters with wood dowels (pins) protruding from the base that are designed to fit into holes bored into the treads.
Pitch Block
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A triangular piece of wood with sides equal to the rise, run, and slope of the stairs. It is used as a drill guide when constructing the underside of a handrail.
Platform Stairs
Stairs built without the use of stringers for low decks and patios.
Post-to-Post Railing
A balustrade that has the handrail cut to fit between newel posts.