% of people told us that this article helped them. For tips on how to calculate the length of your stairs, keep reading! To simplify the process, we’ve created this deck stair calculator to help you determine the correct measurements needed to carry out your project. How do I measure the distance of the stair stringers, as they will be different? By using this service, some information may be shared with YouTube. Norman Raverty is the owner of San Mateo Handyman, a handyman service in the San Francisco Bay Area. vertical up and down cutting action so you can get a nice clean 90 Open stringer is cut open on the rise and run when viewed from the side. Using the measurements, line up the measurement for the run for each step on the longer side of the square. For decks or landings with a height between 22-1/2 inches and 28-1/2 inches. How do I make the bottom riser shorter than the rest? This article was co-authored by Norman Raverty. As for the length of the stringers, take the total height the stairs need to be and square that value. wikiHow is where trusted research and expert knowledge come together. Instead, use a handsaw to finish the cut cleanly. Either, follow these calculations through, or simply use the calculator to get your DIY project off to a breeze! That brings you out about 8 1/2'. There is no solid stringer covering the outsides of the steps. Closed stringers use cleats attached to … Use three fasteners per joint for a 2x12 or 2x10 tread, two fasteners for narrower boards. They should be stout enough to support the weight of the steps and the people using them. Length of Stringers in General Terms. You can also use a hand saw. Having the right calculations before getting started can make the task a lot easier. Fig 1: Routed or Housed Stringers. Cut three stair stringers from 2" x 12" lumber to accommodate a 3-1/2" stair height. Aside from making sure you have at least 5" from the bottom edge of the 2x12 to the inside corner of the throat or notch, you just have to do the cuts nicely. Stair stringers are the backbone of any set of stairs. There is no solid stringer covering the outsides of the steps. If you are using closed stringers, cut treads to fit between them. Continue down the board, making sure to line up the scale's rise and run figure at the top edge. Most steps have a height, or “rise,” of about 7–7.5 inches (18–19 … A common tool used to speed up the layout of a stair stringer will automatically set the correct stair angle. To calculate the length yourself, you will need to use the. Cut a notch in the bottom of the stringers to fit over a piece of 2" x 4" lumber, making sure to cut the notch in the same place on each stringer. "I was a little confused when building my first stringer, but your article has helped. They have the best and most consistent quality as far as I'm concerned. 2x10 board 2x4 board OSB sheets 2x12 boards safety glasses glove stape measure level pencil hammer nail gun screw gun sledgehammer jigsaw masonry bit. Simple illustrations and explanations to help you build worry free stairs for your beautiful deck. Measure the thickness of your stair decking material and cut that off the bottom of the first riser. well against the deck. This deck is an example of that. That is pretty much all there is to cutting a stair stringer. Off the bottom of the foot cut an 1 1/2 for a two by four to be nailed to the ground and then nailed to the foot. Either B or C is required. If the outside stringers are notched, cut the treads so they overhang 1-1/2 inches on each side. Stringers must be spaced at a maximum of 24 inches, though with thicker lumber you can … Laying out the stair stringers is … And with a nicely cut end like this, you can just tuck it under the top decking and against the fascia board or rim joist. do the cuts nicely. Here are easy tips to cut your stair stringers: 1. 2x10 works for the treads, and I'd bolt them too. Approved. In this case, 94% of readers who voted found the article helpful, earning it our reader-approved status. There are two types of stringers: Open stringers, also called cut stringers, have notches for steps cut into them. Answer. More on Stairs: Cutting the proper angle on a ramp may seem challenging, but if you follow a few steps you can build a ramp to fulfill your needs. But if you misunderstand some of the math Mark the edge of the stringer at the corner of the template in the direction of your layout. This distance should be from the top of the finished floor below and the finished floor at the top. The notches incorporated in the stringer are to support the treads of the stairs. Use this stringer as a pattern for the other. 6. check for level along the length of the tread runs, and between the stringers. Simple illustrations and explanations to help you build worry free stairs for your beautiful deck. Drill pilot holes and drive screws or nails to attach the treads to the stringers. This measurement is sometimes called the individual rise of the stairs. through the 2x10 that you added to the head adhere it one rise hieghth under where the stringers are going. check for level along the length of the tread runs, and between the stringers. Measured from step perpendicular to bottom edge of stringer. The board should be at least 12 inches (30.48cm) longer than the planned length of the stringer, just to give yourself some play. There are other ways to build and other materials but cleated stringers with common PT lumber will be the least expensive and easiest. On the hanging side of the head cut off an 1 1/2 so you can nail a 2x10 to the back. Check your local code or ask your county building inspection office first. They were all nearly identical when cut. For example, if you want 7 inches (18 cm) tall stairs and your overall rise needs to be 56 inches (140 cm), then 56/7=8. © 2004-2019 Decksgo.com. ... Cut with 6-1/2-in rise and 10-in tread. You use a framing square to draw the stair’s notches on the stringer, then you cut them out. Some stairs have notched stringers everywhere. Stringers work in the background, providing a strong support structure for stairs. Make the cut, removing the pencil line. You can now draw the notches for the stairs onto your 2x12 stair stringers. Use a hand saw to finish cut. Then, use a circular saw to cut the lines you marked on the wood, but always complete your cuts with a hand saw to avoid accidentally cutting too far. Notched stair stringers are widely used and are acceptable if sufficient supporting strength is provided. ", "This was just the info I need to form my decking stairway. If the floor is unfinished when you are calculating your stringers, you need to take that into account. Use the first stringer as a template to cut the subsequent stringers. You will need 8 stairs. In general, the run of each stair should be about 10 inches (25 cm) in order for people’s feet to fit comfortably as they walk up them. The calculator will provide you with the number of stairs, riser height and tread depth to cut your stringers. These regulations recommend the stair rise to be no more than 7.75 inches (17.78 cm) and stair run to be no less than 10 inches (25.4 cm). Once you know the rise and run that you want your stairs to be, you can go ahead and draw out the cut lines on the 2×10 or 2×12. To cut stair stringers, you'll need to use a framing square to draw out your stairs along the top edge of your board. Attach Stringers to a Deck – How to Make Stair Stringers. Treads may be cut to suit other widths. Use some 2x4 cleats and bolt them with washers. Accurately determining both the rise and run will ensure the stairs reach the required height at a safe angle. Building stair stringers: codes & strength requirements for stair support systems; how to build safe stair stringers that don't sag, squeak, collapse, or lose their treads. It should be no more than three feet apart, but please check your local code. The stair stringers are essentially the backbone of your staircase. You will need to remove the thickness of the riser board from the top stair and remove the thickness of the tread board from the bottom stair. My plan was to pour concrete footings, then run doubled up 2x8 beams setting on the footings, My wife is a stroke victim, and she wants this deck to be as easy as possible for her to walk out on. For convenience and flexibility, this stair stringer calculator comes in two forms, the automatic and manual .Click on the [?] This type of stringers is also known as Box Stringers. But at 7 inches for risers, and say 10 inch for treads, you’ll need a board longer than 14 feet, so you're going to have to purchase 16 feet lumber. Use a circular saw to perform the cuts, but be cautious to not over-cut your guidelines. If the stringer is to be mounted on the exterior, you should allow an air gap away from the wall of at least 1.5 inches to keep debris from building up against the siding of your home. With these dimensions, cut a template with the riser height and the tread depth minus one inch as 2 legs of a right triangle. Use the long-lasting stringer to build stairs on decks, gazebos, terraces and porches anywhere stairs will be … Photos: Patricia Steed. A 42” wide outdoor set of stairs should have 3 stringers (2 x 12, typically). The calculator will provide you with the number of stairs, riser height and tread depth to cut your stringers. Use the first stringer as a template. You'll end up cutting out too much of the stringer to get it to pass below the wider deck framing. Just enter a zip code. Decks, Patios, Porches, Walkways, Driveways, Stairs, Steps and Docks - Deck stair stringers - PT - warping - I cut some stringers for my deck about a month ago. After first stringer is cut, use as a pattern for the other two. Cut the stringers. Stair stringers are required to have minimum 3 1/2 inches of uncut lumber at the point where the riser and tread cuts come together, (be careful with overcuts on circular saws). The cut will be parallel to the cut of your first run. Thanks to all authors for creating a page that has been read 672,103 times. The long end of the square (body) should be on the run measurement. From here you can access the stair calculator; find information about laying out and cutting stringers; learn how to build stairs with landings; and how to design and install stair railing. How to measure tread thickness cut off the bottom of the stringers. The Stair Stringer Layout. Cutting stringers Stop the cuts when you reach the corner of the notch and finish the cuts with a handsaw to prevent weakening the stringers. Learn deck stair stringer layout techniques for nothed or solid stringers. When circumstances demand no posts under the stair stringer or walls for support, use a 2 x 12 stair stringer for added protection. You should also clamp down your stringer board, so that it doesn’t move while you cut it. Include your email address to get a message when this question is answered. Place your stair stringer board (2x10 or 2x12) across a pair of sawhorses and place the square flat on top of it. Mark the new outline and repeat until you have marked 1 extra pair of runs and rises. For instance, if you were to layout your stairs with 7 risers of 6.7857" each and using 13.25" run (ie rise x run = 90) and leave 6" depth on the stringer intact, you could still use 2x10 x 8 ft lumber for the stringers by taking the cut-out triangle and using it to make up the missing apex. The total rise should be set in most cases, so you simply need to measure the height. If you’ve done the math (it’s grade-school stuff) and the layout right, the tread cuts will be level and the riser cuts plumb. The essence of laying out stair stringers is straightforward. The rise must be measured from the top of the completed walking surface down to the lower walking surface. icons to determine the best calculator to use for your stairs. (D) Stringer Run Horizontal span between stairway supports. Decide how tall each step will be. This will secure and square your stringers. These are tried, tested and true methods of attaching stair treads to stringers. A facer board screwed to the inside of the stringers attaches to your deck. First, layout your stairway and decide how many steps you think you will need for your stairs. Secure the blocking with through screws or hardware. Lay the template on your stringer stock with the long (hypotenuse) side aligned with the edge, and mark the first tread and riser along the two legs of the template. 9. This will look bad and will weaken the stringer. And here is how to cut the end of the stringer to create a great looking finish. Cut three stair stringers from 2" x 12" lumber to accommodate a 3-1/2" stair height. Sawtooth or Open Stringers. TimberStrand ® LSL Stair Stringers and SturdiStep Stair Treads Specifier’s Guide 9010 |ember 2015Sept 2 1¼" 1.3E TimBERSTRand® LSL SAIRT STRINGERS Suggested Residential Stringer Attachment Details 40 psf Live Load and 12 psf Dead Load High End (1) Minimum throat depths may be reduced by an additional ¼" for 117⁄8" and 14" material depths if 2x4 reinforcement is If your first tread steps down from the deck, you must extend the rim joist to create a solid surface below the deck rim to attach it to. TimberStrand ® LSL Stair Stringers and SturdiStep Stair Treads Specifier’s Guide 9010 | September 2015 2 1¼" 1.3E TimBERSTRand® LSL STAIR STRINGERS Suggested Residential Stringer Attachment Details 40 psf Live Load and 12 psf Dead Load High End (1) 7Minimum throat depths may be reduced by an additional ¼" for 11⁄8" and 14" material depths if 2x4 reinforcement is The stairs will need only two stringers, but you can build with more if you prefer. Stairs Calculator This calculator is intented as a guide. Either B or C is required. For tips on how to calculate the length of your stairs, keep reading! The number of treads you have (individual runs) will automatically be one less than the number of risers. You can attach stair stringers to a deck. 10. Find the Number of Risers. Measure out how much total rise your stairs need. How do I determine how much stair stringers I need for the job? She would like it to be as high as possible, with. Open stringers take a little more time than closed ones. The treads overhang the stringer on the sides. This way of cutting stringers actually has the same number of rises as it does runs. With three or more, cut pieces based on the spacing between each stringer. This is especially true for stair stringers because you will be cutting a lot of them, and it is better to get the cut right the first time. The treads overhang the stringer on the sides. You have now learned the in's and out's of stair stringer layout whether it is for a notched or solid 2x12. Seven inches is a common rise and 11-1/2" a common tread depth. https://www.familyhandyman.com/decks/how-to-build-stairs-deck/view-all/, https://www.popularmechanics.com/home/how-to-plans/how-to/a2145/4224738/, https://www.ccohs.ca/oshanswers/safety_haz/power_tools/saw_circ.html, https://www.finehomebuilding.com/2014/11/05/laying-out-basic-stair-stringers, consider supporting our work with a contribution to wikiHow. This deck is an example of that. 8-Step Pressure-Treated Cedar-Tone Pine Stair Stringer Get head starts building outdoor stairs with Get head starts building outdoor stairs with this durable, cedar-tone stair stringer. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Comply with local inspections and rules in your area. Secure the blocking with through screws or hardware. Cut the notches with a circular saw. Cut the treads to length and assemble the stairs with nails or screws. deck stairs. Once you have established the rise and run of your stairs and have drawn them out on your wood, you simply need to cut along your lines with precision and care. Thanks. There are 14 references cited in this article, which can be found at the bottom of the page. The measurement of the total rise is from the backyard wood deck level to the point where the last stair tread will sit. Plan to build deck stairs at least 3 feet wide for ease of traffic flow and safe use. untouched they will be a sharp point and your stairs won't fit very On the layout section pages, we showed you how to mark out the tread locations of a set of stairs for solid stringers. Stringers are the slanted parts that provide support to the structure. How to Cut Stair Stringers: 15 Steps with Pictures - wikiHow Pros recommend a width of 16” between stringers, but depending on the stairs and the thickness of the tread, that figure could be slightly higher. A 42” wide outdoor set of stairs should have 3 stringers 2 x 12, typically . To lay out subsequent stringers, align the cut stringer with the edge of the stringer stock, and draw lines. First, determine the tread depth and riser height. The treads are attached to the notches. Drill pilot holes and drive screws or nails to attach the treads to the stringers. Attach Stringers to a Deck – How to Make Stair Stringers. Using the inside measurements on the square adjust the placement of the square so that it aligns exactly with the edge of the board corresponding to your rise and run (6-13/16" of rise and 9-3/4" run from the example above). After the blocking is in place, attach the stringers using four to six 3" deck screws driven closer to the bottom edge of the stringers. Even though we have based the calculations on the IRC, you must always check with local building codes to ensure there are no variances. Just a couple points for cutting a stair stringer properly for your deck. 2. Use a 2-foot level on the tread runs and place a 4-foot level across the stringers to make sure their height is correct. Find outdoor stair stringers at Lowe's today. The material we are using today, since we are building exterior stairs, will be pressure treated 2x12 material purchased from Dunn Lumber Company. Aside from making sure you have at least 5" from the bottom edge of How can the top of the stringer be reinforced? I am looking to install privacy screens on my concrete patio. Now it's time to find out how to carefully cut out the notches. Open stringers should be cut from pressure-treated lumber. [1] X Research source This distance should be from the top of the finished floor below and the finished floor at the top. Southern yellow pine stair stringer aids in building outdoor staircases. The total run is the total length the stairs travel to reach to the required height. In other cases, the stair stringers can be nailed securely to the sides of the walls for added support. In order to cut your stair stringers perfectly, you need to take the time to measure and lay them out correctly. Closed stringers use cleats attached to their inner faces to support the treads. Oct 11, 2019 - Learn deck stair stringer layout techniques for nothed or solid stringers. wikiHow marks an article as reader-approved once it receives enough positive feedback. 4 use the first stringer, but they ’ re what allow us make! It is for a 13 step stringer second one is identical to build and other materials but cleated with... Looking finish making sure to add one foot to that length to allow for cutting a stair stringer added! Quality as far as I 'm concerned is the total run is the span! 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Are calculating your stringers need to take that into account typically made dimensional! Making sure to line up the layout section pages, We showed you how to measure and lay out... Be how to cut stair stringers 2x10 least expensive and easiest 2x12 or 2 - 2x6 treads ” wide outdoor set of stairs boards... Cut the subsequent stringers, as they will be different OSB sheets 2x12 safety!, home repair, and between the stringers to fit under the rim joists wo n't work section pages We... You think you will need only two stringers, also called cut stringers, take total! Can ’ t stand to see another ad again, then you cut it other notched.. Stairs need glasses glove stape measure level pencil hammer nail gun screw gun jigsaw! Difficult part of” the construction project both the rise and run figure at the top the... Ask your county building inspection office first run figure at the corner the! This stair stringer up against my house by the way which is always notched least expensive and easiest you... Board, leaving a few inches at the top of the walls for added....