Stair Tread Riser Calculator

Treads may be cut to suit other widths.

Stair tread riser calculator.

Total required number of tread total stair tread or run width of one tread 90 10 9 tread. This calculator will tell you. Enter total stair rise inches. Is there a head height restriction.

Enter total stair run. The program generates the results of the calculations of the 3d model straight staircase drawings of all structural elements with straight stair stringers. We suggest 10 5 for 2x12 or 2 2x6 treads. To simplify the process we ve created this deck stair calculator to help you determine the correct measurements needed to carry out your project.

The stair calculator is used for calculating stair rise and run stair angle stringer length step height tread depth and the number of steps required for a given run of stairs. Use if total run is restricted by obstacles such as doors or landings. A fraction to decimal conversion table for common fractions used in measurements is also provided at the bottom of the page. How to calculate stairs to use our stair calculator you need to enter the following measurements as a minimum.

The nosing is the projecting edge of a tread. Our stair stringers range from 1 17 treads steps and are made for standard rise and going and work on a 1000mm between centres of the stringers. The rise is the vertical measurement taken from one step level to the next standard rise is 175mm. Either b or c is required.

Total run the total horizontal length of the stair stringer total rise the vertical height between the bottom of the first step and the top of the final step in the stair stringer. Total area for all treads and rises 7 66m to calculate and display upper floor opening and stair head room enter upper floor thickness check the show head room check box and drag the head slider to calculate and animate diagram head room and floor opening. Refer to the figure adjacent to the calculator as a reference. Interior stairs tread and riser ratio the typical interior stair dimension is calculated as the formula riser r tread t 17 inches minimum or 18 inches maximum not including the nosing.

For convenience and flexibility this stair stringer calculator comes in two forms the automatic and manual.