Stringer Calculator

Guide to Using the Stringer Calculator

This Stringer Calculator is designed to provide essential calculations for constructing stair stringers based on specific measurements and requirements. Follow these steps to effectively use the calculator.

Step 1: Enter the Total Rise

• Locate the input labeled Total Rise (inches).
• Enter the total vertical height of the stairs in inches. Make sure the value is between 24 and 144 inches.
• Your input should adhere to the step increment of 0.125 inches (eighths of an inch).

Step 2: Input the Total Run

• Find the field marked Total Run (inches).
• Input the total horizontal length of the stair in inches, ensuring the number lies between 36 and 240 inches.
• The input must also comply with the step increment of 0.125 inches.

Step 3: Specify the Tread Depth

• Look for the input box labeled Tread Depth (inches).
• Provide the depth of each tread in inches, constrained to values between 9 and 14 inches.
• Ensure the value you enter adheres to the increment of 0.125 inches.

Step 4: Set the Riser Height

• Find the field titled Riser Height (inches).
• Input the height of each riser in inches, bounded by a minimum of 4 and a maximum of 8 inches.
• Ensure your input uses the specified increment of 0.125 inches.

Step 5: Determine the Stringer Width

• Type the stringer width in inches in the field named Stringer Width (inches).
• The width should fall within 9.25 to 11.25 inches, following the increment of 0.125 inches.

Step 6: Enter the Number of Stairs

• Locate the box labeled Number of Stairs.
• Input the total number of stairs you intend to build, which should be between 2 and 20.
• This number should be a whole number.

Step 7: Review and Calculate the Results

• Once all inputs are correctly filled, the calculator will automatically compute the necessary results.

Step 8: Understand the Results

• The calculator will display several result fields:
• Stringer Length: The calculated length of the stringer needed, displayed with two decimal points.
• Stringer Angle: The angle of the stringer in degrees, rounded to one decimal point.
• Actual Rise Per Step: Displays the calculated rise for each step, shown to three decimal places.
• Actual Run Per Step: Shows the calculated horizontal run per step, also to three decimal places.
• Recommended Number of Stringers: Indicates the number of stringers suggested based on the total run.
• Meets Code Requirements: Shows if the stair design complies with the standard code, indicating Yes or No.

By closely following these steps, you can utilize the Stringer Calculator to gain important insights into your stair construction project, ensuring that calculations comply with necessary building standards and personal specifications.