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.
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.