Sawtooth carriage

Sawtooth carriage

The most common and reliable type of stair beam. The top edge is cut into a «sawtooth» pattern with treads sitting on top of the teeth.

Sawtooth carriage

01 /Specifics

The most common and reliable option. A sawtooth carriage is an inclined beam with the top edge cut into a «sawtooth» pattern (teeth).

How treads attach

They sit on top of the cuts.

Side-view feature

Viewed from the side, you clearly see the tread ends. The stair can rest on a single sturdy central carriage or on two at the sides.

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Staircase

Tread overhang (nosing)

How far the horizontal tread overhangs the riser or frame. The «nose» visible from the side.

Opening

Offset from far wall

Moves the stairwell opening along wall Y. Used when the opening is not in a room corner.

Stair Type

Straight staircase

The simplest classic configuration — connects two levels in a straight line, with no turns and no change of direction.