NCCER Carpentry Basic Stair

Front

What is the most important concern in the design of any stairway?

Back

Safety.

Front

What is the maximum rise for a set of stairs without a landing?

Back

12 feet.

Front

What type of stairway is classified as a narrow-U?

Back

Narrow-U stairways are typically characterized by a tight turn and limited width, often referred to as 'D' in classification.

Front

What does the International Residential Code® specify as the minimum stair tread depth?

Back

10 inches.

Front

How is tread width (unit run) measured?

Back

From the face of one riser to the face of the next riser.

Front

What is the definition of a stair tread?

Back

The horizontal part of a stair where the foot is placed.

Front

What is the definition of a stair riser?

Back

The vertical part of a stair that connects one tread to the next.

Front

What is the purpose of a landing in stair design?

Back

To provide a resting place and change direction between flights of stairs.

Front

What is the typical width for residential stairways?

Back

At least 36 inches.

Front

What is the maximum allowable height for a single riser according to building codes?

Back

Typically 7.5 to 8 inches.