# My carpentry stair calculator

## How do I calculate stairs?

Divide the rise by 6 or 7 inches (15 or 18 cm) to find the total number of stairs . For larger stairs , divide by 6 and for smaller stairs , divide by 7. The total you get is how many stairs your future staircase will have so you can plan accordingly.

## How do you calculate rise and run of stairs?

On a main stair , the maximum rise should be no more than 8 1/4 inches and the minimum run should be no less than 9 inches. To determine how many steps, or treads, you need, measure from the top of the finished floor on the lower level to the top of the finished floor on the upper level.

## How do you calculate stairs for a deck?

To determine the rise and run of the steps , measure the distance from the floor of the deck to the ground and divide that number by 7.5. The result will be the number of steps the staircase will need (e.g., deck is 112″ from the ground; 112/7.5 = 14.93. Round up to get 15 steps ).

## How do I calculate stair stringers?

How do I calculate a stair stringer ? Start by finding the overall height that the staircase will be. Decide the height or “rise” you’ll want for each step. Divide the total height of the staircase by the height or “rise” you want for each step.

## Are stairs at 45 degrees?

For example, if you were crazy and built a staircase with a 12 inch tread and riser, then the angle of the stringer to the floor would be 45 degrees. A more common angle is about 37 degrees .

## How long should I do stairs?

Aim for a moderate routine of 30 minutes of stair climbing, three days a week. If that’s even too much, aim for 15 minutes at a time. If you use a stair climber machine for 30 minutes and you weigh 185 pounds, you can expect to burn about 266 calories, according to Harvard Health Publications.

## What is code for rise and run of stairs?

(1) The rise of every step in a stairway shall be not less than 4 inches nor greater than 7 1/2 inches. (2) The run shall not be less than 10 inches as measured horizontally between the vertical planes of the furthermost projection of adjacent treads.

## What is the maximum height of a single step?

Stair riser heights shall be 7 inches (178 mm) maximum and 4 inches (102 mm) minimum. The riser height shall be measured vertically between the nosings of adjacent treads.

## What is the normal angle of stairs?

around 37°

## How many stairs do you need to go up 10 feet?

All staircases have one more riser than they do treads. This means you will have 13 treads for a total length of 130 inches or 10 feet 10 inches. You must also figure in a minimum three-foot landing or clear floor area at the bottom of the steps.

## How much does it cost to put stairs on a deck?

Adding stairs will make the deck much more functional, allowing access to the rest of your yard. Most will spend $1,000 to $2,000 to add 48″ wide stairs. On average, the cost is around $100 per tread.

## How do I anchor my deck stairs to the ground?

How to Anchor Deck Stairs to Concrete Use your jigsaw. Notch out the bottom front of the center stair stringers to accept a 2×4 base plate. Make sure your stringers are level. Fasten the base plate to the stair stringers with screws. Locked in place. Use a hammer and drill to install 1/2″ x 3″ sleeve anchors through the base plate into the concrete pad.

## What size lumber is used for stair stringers?

2x12s

## How many stairs stringers do I need for 6 foot wide?

The number of stringers you need is a function of the width of the staircase and the tread material. Cut stringers can be spaced no more than 18 inches on center, so a 3- foot – wide staircase needs three stringers , and a set of slightly wider stairs (say 3 feet 6 inches) needs four stringers .

## What are standard stair dimensions?

Stair width does not include handrails. Building codes generally suggest that stairs be at least 36 inches (91.44 cm) wide.