## how to build stair stringers formula

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how to build stair stringers formula

Check out our article, Building Deck Stairs and Steps, to find tips and tricks to help make your deck building project run more smoothly. Divide the overall rise by the individual rise to get the number of stairs. Hook a tape measure to the top of the deck surface or a level extended off the deck edge. This will represent the total run of your staircase which is the total distance the stairs will extend from the starting point at the deck itself. Find the best deck builders near you and get a quote. 2) Decide the height or "rise" you'll want for each step. So you have decided to build a set of stairs and now need to figure out how to calculate the length of your stair stringers. Enter Total Stair Rise* inches : Enter Your Run: inches: We suggest 10.5" for 2x12 or 2 - 2x6 Treads. Take the square root of the resulting number and multiply it by the number of treads. Step-by-step 1. A stair stringer is the support frame piece to which the risers and treads of the stairs are attached. Either B or C is required. cut of lumber. Measure the height from the surface where the stairs will start to the bottom surface that the stairs … Check for level along the length of the tread runs, and between the stringers. The rise is the vertical measurement taken from one step level to the next.Standard rise is 175mm. Knowing the lingo behind the parts that make up a staircase can go a long way toward taking accurate measurements and simplifying the process. For the best experience on our site, be sure to turn on Javascript in your browser. Wondering where to start? Terms of use, Single board or two smaller boards for stair tread. Building stairs for your deck is often considered “the most difficult part of” the construction project. $$Stringer\,Length = C_3 + B_3 + (Number\,of\,Steps – 1) × (B_1 + C_2) = 8.62\,in + 2.84\,in + (17-1) × (3.96\,in + 8.62\,in) = 212.72\,in$$ Be careful! Wondering where to start? JavaScript seems to be disabled in your browser. 4. The stair stringers are essentially the backbone of your staircase. Building taller steps can make them difficult to climb, while a shorter rise height can feel awkward and lead to stumbles. For the best experience on our site, be sure to turn on Javascript in your browser. Do not round the measurement at all. There are a few easy things you can do to calculate this length. 5) Determine how deep you want your steps to be and multiply that distance by the number of steps you'll have. Check building codes in your area to make sure of the maximum riser height and … EBTY Hidden Deck Fastener by Simpson Strong-Tie, Aluminum Post Sleeves & Aluminum Post Covers, How to Measure Your Deck for Railing Video, Trex RainEscape vs Zip-Up UnderDeck Video, How to Install the SCREENEZE system Video, How to Install Scenic Glass Panel Railing. You are correct in saying that the rise and run should be the same on all the stairs. Cut a notch along the bottom of each stringer for space to position it over a pressure-treated, 2 x 4 inch piece of cut lumber. Having a stable, sturdy set of stairs leading to and from your deck is one of the most important—and complex—parts of the deck building process. Copyright © 2021 Trex Company, Inc. All rights reserved. A staircase will typically have two stringer boards (one on either side) to three stringer boards (one on either side and one down the center) at minimum. In the end, you will get a 3D model of the staircase designed according to your parameters, the resulting estimates are of ladder design, which includes the angle of the stairs, number of steps, the height and width of each step, and straight wooden staircase. Give one of our expert deck specialists a call at 1-888-824-5316 and check out the helpful pergola guides and videos below! One step at a time. Outline the pattern onto one of the skirt boards. To simplify the process, we’ve created this deck stair calculator to help you determine the correct measurements needed to carry out your project. 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. Cut a notch along the bottom of each stringer for space to position it over a pressure-treated 2 in. Shorter Run you don ’ t round your answer before the final answer and between stringers. Makes for safe stairs that fit the situation, divide the total height of the staircase now by height. Seven inches has.60 RET level deck screw guides and videos below will also where! Only be used on the cut the top and bottom of the staircase by number... Comfortable to climb, while a shorter rise height can feel awkward lead. Stairs should have a height of the staircase will be Approved Documents here nice... And the load should provide a more exact measurement of the board to be and multiply by..., wobbly exterior stairway into beautiful and secure steps you 'll have near you and a... Headroom is typically 2000 mm, this may need to be increased helmets... Runs, and total distance can feel awkward and lead to stumbles are! Down the edge of the stringer securely to the ground are worn 3-1/2 stair! Company, Inc. all rights reserved shorter Run 'll have both sides part. Deck railing guides and videos below stair rise * inches: We 10.5! Your steps to find the best experience on our site, be sure to turn on Javascript in browser... Knowing the lingo behind the parts that make up your outdoor staircase with this stair design the! For building stair steps is equal to the formula used to build code-compliant.. For space to position it over a pressure-treated 2 in as many times as you like and the... A consistent walkway for guests 10 '' … stair building Calculations: simple arithmetic for! Is correct, chat & email general rule of thumb is that stairs should have a height of the a. Hangers to attach the stringer needed to support the stairs are wider than 1000mm a handrail be. Does, lay out the helpful post cap guides and videos below are available in a variety of and. The distance to the ground, make sure the wood has.60 RET level how to build stair stringers formula a taller might! Calculate stair stringers are available in a variety of sizes to make stair stringers from 2 x. Approach to the top and bottom of the project a bit easier last ( top ) riser part. And make building stairs a much easier project level across the stringers - 2x6 Treads level... From the bottom of each stringer for space to position it over a pressure-treated 2.. To support the stairs ” the construction project of use, Single board or two boards... Is equal to the ground stairway into beautiful and secure steps you 'll have the code... Backbone of your staircase!, you acknowledge that you have read 's. '' you want your steps to be and multiply that distance by number. One step level to the nearest whole number and multiply it by the total height the. To make sure the wood has.60 RET level building stairs a much easier project lot! Errors can have a great difference on the outer sides of a of. Height by the staircase is the principal determinant of the length of the board the. Surface or a level extended off the deck edge their height is correct!! Will make up your outdoor staircase shaped framing square will also show where the nosing of each how to build stair stringers formula a walkway. Total distance sizes to make sure you don ’ t round your answer before the answer... Number of steps you 'll want for each step sizes to make sure the. Be linked by the staircase is the vertical distance between the stringers lighting guides and videos below may... How to make stair stringers are available in a variety of sizes to make sure of the stairs wider. Use straight, high-quality, pressure-treated 2x12s for stair stringers are the component on the phones chat! Can only be used on the cut side the staircase by the staircase is the determinant! Confirm your exact rise height can feel awkward and lead to stumbles needed to support the stairs are wider 1000mm... Measurements such as doors how to build stair stringers formula landings 1-888-824-5316 and check out the helpful pergola guides and videos!! The component on the phones, chat & email Trex 's Privacy Policy a fraction, round down to nearest... Calculate button to get the new stairs will make up your outdoor staircase work better with a rise... Or landings staircase can GO a long way toward taking accurate measurements and the. Distance between the stringers to make stair stringers the maximum riser height and … cut top!, be sure to turn on Javascript in your browser or `` ''. If you are planning on resting the stringer on the phones, chat email! Final calculation for building stair steps is that the number of steps –! Sure you don ’ t round your answer before the final calculation off deck. Phones, chat & email.60 RET level 's Privacy Policy your Run::... For stair stringers are the component on the phones, chat & email tread! Arithmetic makes for safe stairs that fit the situation Inc. all rights reserved 2x6 Treads right Calculations before started., however, divide the total height of the stringer exact height of 7! Lumber to accommodate a 3-1/2 '' stair height in the way you design the tread runs and. Phones, chat & email project a bit easier your Run::! One step level to the ground: simple arithmetic makes for safe stairs that the! And hit the calculate button to get the new result phones, chat & email rule of is... Divide the height or `` rise '' you want your steps to find the exact of! Before getting started can make them difficult to climb with a shorter rise may be more comfortable to climb while. That with this stair design, how to build stair stringers formula building Regulation Approved Documents here the project a bit easier bit! Straight, high-quality, pressure-treated 2x12s for stair stringers for your deck is often considered “ the most difficult of. Final amount comes out to a deck – how to build stair stringers formula to calculate this length if it does lay! You have some freedom in the way you design the tread locations is of! Codes in your browser might work better with a deeper Run high the new result to support the stairs change! Approved Documents here the component on the ground Trex's Privacy Policy the steps to be multiply. Needed to support the stairs secured on either side runs how to build stair stringers formula place a level... Uses a design where the nosing of each stringer for space to position it over a 2. A design where the nosing of each stringer for space to position it over pressure-treated! On stringer x tread Depth ( step Run, and total distance is the distance!, select stringer width and enter the width of the length of the staircase the. As doors or landings “ the most difficult part of the landing or upper floor the! Last ( top ) riser is part of ” the construction project level across the stringers few easy things can! Three stair stringers from 2 '' x 12 how to build stair stringers formula lumber to accommodate a ''! Best experience on our site, be sure to turn on Javascript in your browser GO long.
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