how to figure out stair stringers
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How to Figure Stair Stringer Length There are the simple ways how to figure stair stringer length. Measure the height of the surface which will be used for the stair. Then, connect to the bottom surface of the stair will be placed. Give the note of the measuring result and calculate the stringer length and the step sizes.
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How to Plan Stairs Divide this by a typical riser height, such as 8 inches, to get an idea of a reasonable number of steps. For example, a total rise of 102 inches divided by 8 inches equals 12.75 stairs. All steps must have the same dimensions, so round up to the nearest whole number.ultiply the 12 treads by the minimum tread depth of 9 inches to arrive at 108 inches for the staircase run. Add nosing and riser thickness of 2 1/4 inches to achieve a total run of 110 1/4 inches.
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How to Build Stairs in 3 Easy Steps You can use that information to find the total run of the staircase--or how much horizontal distance it will cover as it climbs. Multiply the number of steps by the run, or horizontal depth, of each step. The optimum run of each step is no less than 10 in., which is enough space to accept two 2 x 6 treads.tep 2: Cutting Stringers. Before laying out the steps on a 2 x 12, decide how the stringers will join the deck. They're either attached directly to the rim joist so the top step is flush with the deck top, or to the framing under the deck, which is the way we did it (see drawing on previous page).
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Staircase and stair calculator By our stair calculator, you are able to perform an accurate estimation of metal or wooden stairway and compute the amount of construction materials needed to install it. One of the most important elements in your stairway is stringers. They are intended to carry the weight of the household traffic.
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How to Build Deck Stairs Sure, building deck stairs can be tricky. But in this story, we'll make it easy by showing you how to estimate step dimensions, layout and cut stair stringers, and assemble the stair parts. And you won't have to do any hard math to figure it all out (but your calculations will have to be accurate!).et a 6-ft. 2x6 for securing the stairs to the deck (Photo 8). You'll also need two 2x6s for each tread and a 1x8 for each riser. Use 3-in. deck screws to fasten the skirts and treads to the stringers and the skirts to the deck.
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- This number must ALWAYS be rounded up to the next whole number, 13 in this case. This is the number of risers in the staircase. Once you’ve determined the number of risers, you need to determine riser height. Take the total rise measurement (104 inches) and divide by the number of risers (13).104 / 13 = 8 Stairs are cut to the nearest 1/16”. In this particular example the riser height is exact.his number must ALWAYS be rounded up to the next whole number, 13 in this case. This is the number of risers in the staircase. Once you’ve determined the number of risers, you need to determine riser height. Take the total rise measurement (104 inches) and divide by the number of risers (13).
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Laying Out Basic Stair Stringers Using 2×12 stringer stock and a 10-in. run barely leaves 5 in., and a bigger run would leave even less. After you’ve decided the rise and run, lay out the stringer with a framing square. Consistent layout is crucial. The IRC allows no more than a 3/8-in. variation in riser height or run depth over a stair.
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How to Calculate Stair Stringer Length This will give you the necessary number of steps for your staircase. Write down the height or rise of the steps and the number of steps you will require. Decide on the intended tread depth or length of the stair treads from the front or nose of the treads to the back of the treads where they connect to the rise.
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- 7. Determine how many stringers you will need. To prevent your steps from sagging or bowing as you step on them, a wide staircase will need plenty of stringers underneath to keep it evenly supported. For safety reasons, the stringers should be spaced between 16 inches (40.6 cm) and 4 feet (121.9 cm) apart.ultiply the total number of steps by the run of each step: 13 total steps x 10 inches = 130 inches (330 cm) total run. The total run is the horizontal distance the stairs will travel from beginning to end. In our theoretical example, the total run is 130 inches.
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Laying Out Basic Stair Stringers If it does, lay out the stringer so that the crown on the completed stair will face upward. 3. Lay out the first tread and the second riser. Hold the square so that the leg with the tread dimension is closest to the end of the stringer stock but far enough from the end to allow for a riser below.
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Laying Out Basic Stair Stringers The essence of laying out stair stringers is straightforward. You use a framing square to draw the stair’s notches on the stringer, then you cut them out. If you’ve done the math (it’s gradeschool stuff) and the layout right, the tread cuts will be level and the riser cuts plumb.
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- As for number of stringers, in my town you would need at least 4 stringers for a 48 inch wide step for an outside stair. This refers to cut stringers, not solid, I just built a set of stairs for my deck, I used cut stringers, 42 inch wide steps, needed four stringers.Each step was 6 inch rise, 12 inch tread.teps are generally required to fall in a relatively narrow range of sizes, you need to check code in your area. Where I live, outside steps must be less than 7-1/2 inches high, and the tread must be at least 10 inches, with a nosing of between 3/4 and 1-1/4 inches.
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How to Build Deck Stairs Sure, building deck stairs can be tricky. But in this story, we'll make it easy by showing you how to estimate step dimensions, layout and cut stair stringers, and assemble the stair parts. And you won't have to do any hard math to figure it all out (but your calculations will have to be accurate!).
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How do you calculate the length of a stair stringer? Quick Answer. In general terms, the length of a stringer for a stairs is 14 inches for every step. For a more precise calculation, you need the know the height of the riser and the width of the tread for the steps.
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How To Replace Stair Treads 1 Measure the stair treads and cut them one at a time. 2  Dry fit them first to make sure they fit precisely against both the stringers and the riser. 3  Just as in fitting the riser, you may have to scribe the tread and cut it to fit the stringers at both ends.
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The Best Way to Cut Stair Stringers The more stringers you use, the more consistent they must be. The basic method for cutting stair stringers -- the diagonal boards that support the treads and risers -- is pretty much the same regardless of the size, length or number of stringers in the staircase.he more stringers you use, the more consistent they must be. The basic method for cutting stair stringers -- the diagonal boards that support the treads and risers -- is pretty much the same regardless of the size, length or number of stringers in the staircase.
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How to Build Stairs in 3 Easy Steps There are three main components in a typical staircase: stringers, treads and risers. Stringers, typically cut from 2 x 12s, are the sloped boards that support the other components and carry the weight of people walking on the stairs. They're typically spaced 16 in. on center.
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18.2 Stairs: Wood Riser Stairs Calculating Stair Rise. Use a string and string level to determine the height of the stairs. 1  Mark the end of our stairs with a stake driven in at the point where the bottom riser will sit. 2  The distance should be evenly divisible by twice the width of your decking boards.
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- BUILDING YOUR STAIRS. 1  To build the staircase, first notch the stringers for the treads and risers. Fasten two stair gauges to a carpenter's square at the dimensions of the rise and run (for example, at 6-1/2 on one leg and 13 on the other).
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Carpentry Tools: Framing Square How to Cut Stair Stringers with a Framing Square. 1  Measure the rise (vertical distance) and run (horizontal distance) of the area your stairs will occupy. 2  Divide those measurements by the number of stairs you want to have. 3  This should produce two numbers—one for rise, one for run.
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How do you calculate the length of a stair stringer? Take the square root of the resulting number and multiply it by the number of treads. This should provide a more exact measurement of the length of the stringer needed to support the stairs. Check building codes in your area to make sure of the maximum riser height and the minimum tread width.
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How to Lay Out Stair Stringers for a Deck To make the most of your deck, avoid large steps up from the ground to the wood. Instead, add steps that the oldest and youngest can easily climb. Aim for steps with a rise -- the distance you step up -- of about 7 inches and a run -- the depth of the step, from toe to heel -- of around 10 inches.
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Laying Out Basic Stair Stringers If the finished floor won’t be in place when you install the stringers, add its thickness to the height of the bottom riser, or shim the stringers. Let’s say the overall rise is 46 in. To find the minimum number of risers required for the stair, divide the overall rise by the IRC’s maximum rise of 7.75 in.