- Go to blocklayer.com to access the online staircase calculator. The bottom of the screen shows a cross-section illustration of the staircase you are designing, as well as proposed measurements.
- Measure the distance between the floors for the stairs you are designing. Enter this measurement under the "Total Rise" drop-down list.
- Choose a preferred stair riser height, which should be about 7½ inches for residential staircases. Your range can be from 7 to 8½ inches. Choose the measurement in the "Ideal Rise" drop-down list.
- Show more details in the cross-section drawing of your staircase design. Select "Show Nosing", "Show Stringer" as desired, and select "Restrict" to lock the design to the riser dimension you selected.
- Determine the tread depth, or length. Enter this measurement in the "Ideal Run" drop-down list for the staircase. A standard residential tread depth is 10 to 11 inches, including the nosing. Enter the tread depth as the "Ideal Run" measurement from the drop-down list. Select "Use Ideal Run" to provide the overall length the staircase will require, based on the tread depth you selected.
- Click the "Calculate" button to see a graphical design of your stairs.
- Refine the design by selecting the "Stringer Width", "Stair Width", "Headroom" and "Floor Thickness" to incorporate these elements in the design results. For example, a typical stringer width is 11¼ inches, a standard stair width is 42 inches, and the headroom should be a minimum of 7 feet, 4 inches.
- Press ¨Calculate,¨ again, to update the calculations and graphic. Scroll down the page to find the extrapolated measurements for the staircase you just designed.
Things You Will Need
- Tape measure
- Computer with Internet access
- If you haven´t determined your staircase measurements, the default measurements in the drop-down menus provide a reasonable starting point for a typical residential stairway design.