What are the minimum tread depth and maximum riser height for a staircase according to code?

What are the minimum tread depth and maximum riser height for a staircase according to code?

• A. 8 Inches, 8 Inches
• B. 10 Inches, 7-3/4 Inches
• C. 7-1/2 Inches, 7-1/2 Inches
• D. 10 Inches, 7 Inches

Answer: (B)

The dimensions are set to keep stairs safe and comfortable to rise and land on. The tread depth must be at least 10 inches to provide enough room for the foot and reduce the chance of slipping. The riser height must not exceed 7-3/4 inches to avoid making steps too tall, which would be harder to climb and more tiring. So the combination that matches common code requirements is a minimum tread depth of 10 inches and a maximum riser height of 7-3/4 inches. (Note that local codes can vary, so always verify the edition used on a project.)

The dimensions are set to keep stairs safe and comfortable to rise and land on. The tread depth must be at least 10 inches to provide enough room for the foot and reduce the chance of slipping. The riser height must not exceed 7-3/4 inches to avoid making steps too tall, which would be harder to climb and more tiring.

So the combination that matches common code requirements is a minimum tread depth of 10 inches and a maximum riser height of 7-3/4 inches. (Note that local codes can vary, so always verify the edition used on a project.)