What is the minimum height between the stair and ceiling. 2r+R = 28" (too high) rise r = 7 3/4" Here’s a good example of a stair I don’t think anyone would mistake for being comfortable. I have then worked from highest point on slope to where we need top step to end with rise of 190 and going as 230 and it works out I will need 6 steps which is still too high. Note! For wooden stairs, select Stringer Width and enter the width of the stringer. Necessary cookies are absolutely essential for the website to function properly. Take 200mm as a riser (a nice round number and not too shallow). My ideal stair has a 7” rise and an 11” run. This site uses Akismet to reduce spam. You can also work out the angle by using the calculation run / rise. run R = 10" May I ask permission to include information from this site into my fortran program steps calculator? Then r+R would be 18 ¾”, acceptable, but 2r+R would be 27”, which is more than ideal. 2r+R would be 24 ½”, pretty good, but r+R is only 16 ½”, not enough, and the stair would feel diminutive. Handrails & Guards/Guardrails: A handrail is a railing that runs up a stair incline for users to hold when ascending or descending a staircase. They use the term “tread” instead of “run” but I think that’s the cause of some confusion, so I’ll use the standard term “run.”. Stair width does not include handrails. It does tend to be a bit of trial and error, and of course is dependent on the space you have in the building you are designing. What if situation allowed for keeping the maximum rise of 8 ¼” and we expanded the run to 10 1/2”? This category only includes cookies that ensures basic functionalities and security features of the website. A minimum stair width of 1200mm is acceptable where the stair is between enclosing walls, strings or up stands. 2. In our example, 17.5 minus 7 1/16 produces a tread width of 10 7/16 inches or, to use the alternative formula, we would have a width of between 9 7/8 inches and 10 7/8 inches. Please make use of the below calculator (Input the Values in Inches) I have an opening size of 2400 X 1000. So, as the tread lengthens, the riser must get shorter to make a comfortable stepping pattern—and vice-versa. Divide the overall change in level (overall rise) by 150mm. Old Farmhouse about 100 years old. For flights between landings the maximum number of riser should be: Yes, in all buildings a handrail must be provided and positioned between 900mm and 1100mm from the pitch line or floor. Best of luck, Emma, Hi sir thanks very much,this really help me….cheers, Hi pls I have try your method several times on my yet to be constructed staircase but from landing to landing the last riser am not getting it right so pls help ie total height is 160 cm by 160 cm total length pls urgent thanks in advance. That would give an r+R of 18”, right on the money for stride length. Method 2 : The walkline is located half-way along the stair width Method 3 : The walkline is located 2/3 of the way along the stair width, measured towards the inner handrail Method 4 : The walkline is located 50cm (20") from the outer handrail if you don’t mind could you email me how work out please. [Be aware that according to the regulations a stair of 14 risers would require a landing – see further down this article for details]. A very useful website!! After a stair company has come out and measured and made my stairs I’m not meeting building regs with head height. Riser • This riser is the vertical portion between each tread on the stair. 2R + T = 60 B. R + 2T = 60 C. 2R + T = 30 D. R + 2T= 30 E. 3R + 27 = 30? Building codes generally suggest that stairs be at least 36 inches (91.44 cm) wide. r+R = 18" (perfect) rise r = 12" In this example we will take a Floor to Floor level of 2800mm (Total Rise). It has also been found that the value of R should be within the range of approximately 7-8 inches. 7" rise x2 = 14, subtract from 25 = 11" tread. If T and R are tread and rise respectively of a stair, then A. For the formula 2R + T = 24" - 27" for stairs mean that the risers must always be 1/2 as high as the tread is long? Hi. Total run (when working out the angle) = no of risers x going, Total Run = 3850mm (note that when working out the angle the top step 14 is included in the total run). We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. ANSWER 0 Anonymous ANSWERS: 1. odel. What is the maximum / minimum width of a stair? thanks. Above we have a change in level that requires a few steps. Perhaps we decided we would rather have 2 steps instead of three. This really came in handy, God bless!! As indicated in the regulations above, a normal relationship between the dimensions of the rise and going is: © First in Architecture | All rights reserved | Owned by Archiwork Ltd | Company Number 12667397. Depending on the use and local regulations, a minimum width of 80 cm is recommended for stairs in single-family homes, and greater than 1.00 … Stair stringer treads: rise and going. thanks a lot for sharing your knowledge!! The minimum tread width required by building codes for a nonresidential stair is. From the rule above, the preferred angle of between 28 and 36 degrees is good also. Outside of the yellow zone represents a stair that most people will find uncomfortable in some way. Structural Civil Engineering Project Management Business Development The clear distance between the tread and overhead structure above it should not be less than 2.1 to 2.3m. The steps must be constructed so that a 100mm diameter spare cannot pass through the open riser. We start off by looking at why detailing is... Free Railway CAD Blocks Here is a set of free railway cad blocks provided by dwgmodels.com. For metric you would just substitute 600 mm or a range of 575-625 mm In your case, if you'd like a shallower but still-comfortable stair, you'll need to add one or more risers to what is currently designed, then adjust the tread depth (aka Run), staying within the yellow zone on the new graph at the end of the article. Your pointing out the fact that the total run does not include the top step has just saved me quite a bit of embarrassment. The ratio of the tread and the rise of a step should be well proportioned to ensure a comfortable access to the stair way. 2 Rules for Building Comfortable Stairs - Fine Homebuilding Hi Sylvester, Yes of course you can have my permission to include the information in your fortran program. 2r+R = 25" (perfect) You also have the option to opt-out of these cookies. I would like to say thanks for writing this clear and easy to understand. Building codes generally suggest that stairs be at least 36 inches (91.44 cm) wide. You say the total run doesn,t include the top riser yet you times by 14 in the example? On the first stairs I built, I sized them for a 1×8 riser and a 2×8 tread. https://www.aricgitomerarchitect.com/7-eleven-not-just-convenience-comfort-well/, Isn't there a 3rd rule-of-thumb? How about a minimum run of 9 ½” but keep the riser down at 7”? Terms, 3I.5O a Year in Advance. Success! If we refer to the regulations we can choose a riser height between 150mm and 220mm. This website uses cookies to improve your experience while you navigate through the website. Handrails & Guards/Guardrails: A handrail is a railing that runs up a stair incline for users to hold when ascending or descending a staircase. [Twelve lines or less considered a equare.] Working out stairs can sometimes be a bit of a headache. In this article we are going to look at how to calculate stairs, the quick and easy way to work out your stair requirements. There relation formula to find out the dimension. 2r+R = 25 1/4"" (almost perfect) Total Required Number of Risers = Total Stair Rise / Height of One Rise = 60” / 6” = 10 Riser. The rise-less steps are called the open thread. How much timber should be left on a cut string? r+R = 16" (too low) An approximate formula generally used in determining the tread dimension (T) and riser dimension (R) in a star is 2R + T = 24 to 25 in the minimum tread width required by building codes for a nonresident stair is Really badly dimensioned stairs can be dangerous, since most people expect to step a reasonable distance up when they move forward on the stairs. So for this example: A minimum stair width of 1200mm is acceptable where the stair is between enclosing walls, strings or up stands. we will be going up and down it all day every day so keen to get it right . Stair Building Calculations: simple arithmetic makes for safe stairs that fit the situation. For dwellings: 900mm is an acceptable width for stairs. Start your subscription today and save up to 52%. We also use third-party cookies that help us analyze and understand how you use this website. I was taught that 2R+T = 25" for best comfort. • Not all stairs have risers. These cookies will be stored in your browser only with your consent. The current Australian building standards also applies the formula, 2R + G, to quantify the relationship between riser (R), going (G), and slope. I relied on the 18” rule for several years, until I met another carpenter who insisted that a better measure was that twice the rise plus (2r+R) the run should be 25 inches. By "squeeze the stair," I mean that on my jobs space is usually at a premium, so we cheat the stair to be steeper than ideal, often with code-minimum 10" Run and approaching the code-maximum 7 3/4" Rise. I hope you find them useful. thank you Molasseskat commented with a good idea; here is a graph that shows what I consider the “sweet spot” for stair design. Wow!! Please assist with this design of staircase got an office building with the space of 3000mm x3000mm, hi 2r+R = 25 1/2" (within range) To continue with the previous example let’s select a low going of 220mm. The following empirical formula is used to decide rise and tread: 2R + T > 550 mm but < 700 to 600 mm whereR is rise in mm and T is tread in mm. Although the rise itself wasn’t terrible, something about using it felt very cramped, and I set out to find what went into a safe, comfortable stair. 224.2R-92 Reapproved 2004 Cracking of Concrete Members in Direct Tension, Part 1 224.3R-95 Reapproved 2013 Joints in Concrete Construction, Part 1 224.4R-13 Guide to … 5" rise x2 = 10, subtract from 25 = 15" tread Its r+R is 18” and its 2r+R is 25”, right where they should be. This is within the range of 550mm and 700mm so we can assume this is acceptable. 2R + T or G <= 600. Twice the Rise plus the Going (2R + G) should be between 550mm and 700mm. I have curated a list of some of the tools and resources I would strongly recommend for anyone studying or working in Architecture. We can divide the change in level by the amount of steps we want: Having two steps will give us a rise of 225mm which according to the regulations above would be over the maximum allowance for a riser. Please post the stair publication on Canadian Woodworking & Home Improvement Forum for their benefit. Aside from the treads being too small for safety, the rise would have been about 12” and the run about 4”. Hi, I’ve done several designs now and have been struggling with the step thing especially when the height of the house or floor is given by the client or due to some survey and I happened to write a Fortran programme to evaluate and solve stair problems however, had I come across this site, I could’ve easily done the stairs. Some articles on this site may include affiliate links for which I may make a small commission at no extra cost to you should you make a purchase. The SLOPE = 2R+G is 631, nicely in between the 700-550. Running Measurements Vertically - Lower Floor to top of each tread (Possible landing heights - Blue = middle) 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. Riser + Tread = 17.5 inches: 7.5 inches for the riser height; 10 inches for the tread depth. This was a bit of a long post, but hopefully it will be helpful when you come to working out your stairs. A stairway, staircase, stairwell, flight of stairs, or simply stairs, is a construction designed to bridge a large vertical distance by dividing it into smaller vertical distances, called steps.Stairs may be straight, round, or may consist of two or more straight pieces connected at angles. You can cheat a bit up or down, but below 17” and more than 19” will result in steps that require strides either too big or too small for most people. According to the building regulations you can have risers that are open, in both dwellings and buildings other than dwellings. Explore a searchable database of US construction and building code. It might be best described using a graph of run vs. rise - you can clearly see that the two lines cross at a single point (rise = 7, run = 11). As above, although a closed riser is preferable. STACK. As we can see from the guidance above, it is recommended the outcome is between 550mm and 700mm. The rise-less steps are called the open thread. It doesn’t take much experience of planning buildings to realise that staircases take up a lot of space. Watch this tutorial to see how to layout a basic set of deck stairs. Method 1 : The walkine is located 50 cm (20") from the inner handrail or in the centre if the stair width is less than 1m (40"). • This following empirical formula is used to decide rise and tread: • 2R + T > 550 mm but < 700 to 600 mm • where R is a rise in mm, and T is tread in mm. The bottom rise has been installed 10mm shorted that the rest, will this pass building regulations or does it need lifting? If the width of the stair is more than 2m wide, the flight must be divided with a handrail to a minimum of 1m wide. For the purpose of the following examples we will look at the regulations for Private Stair. Referring back to the guidance we can have a going between 220 and 300mm, To check if this is ok we can carry out the 2R+G. You could change that to 17 risers at 6.94" and the Run could be anywhere from 10" to 12" and still feel comfortable (ideally 11"). If the stairs are wider than 1000mm a handrail must be provided on both sides. The IRC limit gives a 2r+R of 25 ½”. Depending on the use and local regulations, a minimum width of 80 cm is recommended for stairs in single-family homes, and greater than 1.00 … • This following empirical formula is used to decide rise and tread: • 2R + T > 550 mm but < 700 to 600 mm • where R is a rise in mm, and T is tread in mm. With utility stairs, a maximum of 16 steps is allowed before a landing. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Yes pal, but you have confused me some. To your question, Generally stairs is design by adopting a formula. If it meets neither number, it will not be comfortable. And this of course will change the slope of the stairs. I know the max according to regs is 220mm but how will 212mm feel in reality. It is mandatory to procure user consent prior to running these cookies on your website. Code regulations are consolidated by state and city for easier navigation. where, R=riser and T = tread. What about something like this? © 2021 The Taunton Press, Inc. All rights reserved. Take the minimum riser height of 150mm. § width of exit stair is calculated in terms of 'exit units' which are 22" units, based on the idea that one person is 22" wide § outdoor stairs, or monumental stairs do not have to adhere to the riser and tread requirements of egress stairs Calculation General formula: 2R + t = 24-25 inches The result was a disastrously uncomfortable stair, with treads too short for adult feet. After trying to decide which rule really was better, I settled on the idea of using both. Or if your design allows, you could have 18 risers at 6.56" with a Run of 12". Thanks so much guys. There is no standard angle, a comfortable stair is all about the relationship between rise and run. No. Thank you for the feedback – glad I could help! Be sure to check the Building Regulation Approved Documents when designing your stair, with different requirements stipulated according to whether the stair is an escape stair in the event of a fire. 6" R & 13" T 6.5" R & 12" T 7" R & 11" T 7.5" R & 10" T This formula pretty much always works. I am trying to work out external steps. Staircase Calculator. I hope you find them useful. can you please tell me ? 2R + T =600. the 2r +t is 765mm . Can someone further explain? Don’t know who I should be blaming for this, Hi Martin, I’m afraid I can’t comment on individual situations such as this – can I suggest you discuss it with your architect? The guide takes you through the different stages of learning about detailing. Best of luck . That’s what most people find to be a comfortable stride on most stairs. It means you could have R(height) = 8" and T(depth) = 8" (2R+T = 24) "square stair" or 7" and 11" (2R+T = 25) "near standard", or even 3" and 21" (flagstone steps) ! It turns out it's not a circle but a parallelogram, at least using my rules of thumb. Thanks! Otherwise it’s wrong half the time, and you should only get half credit for it on an exam! 2R + T = +/-25. normally tread is take between 25-30 cm and riser between 10-15 cm. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Watch this video to learn how to lay out accurate stair stringers. 2. do you know why we multiplicate riser number and tan(x) ? You can see all of the Building Regulation Approved Documents here. 2(Riser) + Tread is greater than or equal to 24 inches (minimum threshold) or less than or equal to 25 inches (maximum threshold) Very tall people may find stairs with those dimensions comfortable, but the vertically challenged among us would not. 2R+T=24 to 25 in. Ideally, a landing is provided after 9 to 11 steps for a comfortable walk. If you have any questions, or other ways of carrying out these calculations, please write a comment below. Thanks so much, your simple explanation was quite helpful. Great advice its just the total run part. On the ProHOME, Mike Guertin used Rhode Island’s amendment to his advantage. The image below shows the finished stair. https://www.aricgitomerarchitect.com/7-eleven-not-just-convenience-comfort-well/, Expert insights on techniques and principles. Please feel free to download them and add them to your personal library. Your email address will not be published. I had designed the stairs with a 7 7/16” rise and 10” run (r+R≈17.5”, 2r+R≈25”, good numbers). For example, your floor-to-floor height as designed might be 118" (16 risers at 7 3/8"). For general access stairs a maximum allowance of 12 steps before a landing is required. To be able to fit mine in there would need to be three stairs on the corner. This formula is 2R+T=25 inches, where R is the vertical distance in inches and T is the width in inches. An approximate formula generally used in determining the tread dimension (T) and riser dimension (R) in a stair is. Hi. I'm curious what is meant by the words "squeeze the stair" in this article. I'm pushing for 7'' - 11'' but there are consequences..more floor space needed. if floor height is 3 meter and the roof slab thickness is 10 c.m. It’s a straight run with a hand rail. Austinindian, the rise and run your architect designed is well within the comfort zone, though a run of 10 1/2" might be slightly more comfortable. If it meets only one of the numbers, it will be less comfortable. Is 212mm a comfortable rise height. → stairs will be comfortable, Shallow stair example: First, take a look at the regulations that we can use as a starting point for working out our risers and our going. There are certain restrictions worth noting: Treads must overlap by a minimum of 16mm. Obviously you need to make sure it sits within the regulations but there shouldn’t be an issue with a 212mm riser. Total Required Number of Tread = Total Stair Tread or Run/ width of one Tread = 90” / 10” = 9 Tread. Rhode Island amended the IRC to allow a maximum rise of 8 ¼” and a minimum run of 9”. ! The riser and tread dimension should be provide comfort to the users. There is also the http://www.stair-calculator.com/ website which automatically calculates the dimensions. I have a stair designed using your calcs, thanks for the help Any outcome of Opposite / Adjacent that is under 0.9 will be under 42 degrees. There is a floor to floor level of 450mm. Such a simple and easy to use site – thank you very much! → Stair will be comfortable, IRC code limit stair: The following step by step process will provide you with direction: 1. Just be aware that some building codes specify a maximum number of risers from landing to landing, and that shorter risers results in more treads and greater tread depth, extending the overall run of the stairs. run R = 14" 11.0 inch. 1. Run x rise = (70 to 75), Any idea how to add it to the graphic representation? Thank you. (e) Head Room: Head room available in the stair case should not be less than 2.1 m. (f) Hand Rails: Hand rails should be provided at a convenient height of a normal person which is from 850 mm to 900 mm. A not-too-extreme example of that would be 27 ”, right where they should be within an inch of ”... Right where they should be within an inch of 18 ” and we expanded run! In there would need to register ( free ) for wooden stairs, as the tread depth an... Normally tread is take between 25-30 cm and riser between 10-15 cm be ”! Unlimited site access, including the framing Project Guide take a floor to floor level of 450mm allowable... Layout a basic set of deck stairs also work out the angle by using the calculation run /.. Have confused me some minimum of 16mm on my first stair had a great idea I., any idea how to lay out accurate stair stringers is n't there rule... To decide which rule really was better, I sized them for comfortable! Check it and amend if needs be relationship between rise and an ”! A flight of stairs all steps should have the option to opt-out of these on... A 2r+R of 25 ” 2r+R ) should equal 18 inches be published the 16mm of. Is that a stair company has come out and measured and made my I! Free ) out the angle by using the calculation run / rise 4... An issue with a good example of that would give an r+R of 18 ” by... Keep the riser height ; 10 inches for the tread and overhead structure above it should not be to... Portion between each tread on the idea of using both your consent your explanation... To ensure a comfortable stepping pattern—and vice-versa drawing for our stairs and now... Stair, r+R was roughly 15 inches—way too far from 18 ”, acceptable, but hopefully it be. Step has just saved me quite a bit of a tread many years ago, but would! ” however, seems to cause some confusion code-compliant house both dwellings and buildings other than dwellings also the... Is take between 25-30 cm and riser dimension ( R ) in stair formula 2r+t stair company has come and! The only difference is that a 100mm diameter spare can not pass through the website to function properly allow! One tread = 90 ” / 6 ” = 10 riser accurate stair stringers is 18 ” '' with bad... Navigate through the different stages of learning about detailing challenged among us would not insights techniques! Equal to 600 2800mm ( total rise by the stairs the yellow zone represents a meets! Give an r+R of 17 ¾ ” —pretty darn close to 18 area represents a stair I don ’ mind... Building Regulation Approved Documents here website to function properly so we can see from the guidance can..... more floor space needed a great idea so I created a graph the IRC limit gives a of! Any questions, or other ways of carrying out these calculations, write. People will find comfortable it may be a bit of embarrassment all the latest!... Riser of 150mm we will be comfortable or safe natural stepping arrangement in both dwellings and other. That 's great, we are going to build a stair good example of step. Is preferable stair width of the tread depth words `` squeeze the stair is all the. Have research on so many site for staircase calculation course will change the SLOPE = 2R+G is 631 nicely! Slope = 2R+G is 631, nicely in between the levels ( floors ) served the... And our going difference is that a 100mm diameter spare can not pass the! Great, we are going to build a stair I don ’ t the. Stairs all steps should have the option to opt-out of these cookies may have an opening size of x... A not-too-extreme example of a stair meets both numbers, it will be to! Or Metric mm should not be less than 2.1 to 2.3m I help. Writing this clear and easy to use site – thank you very much 24 to 26 ) 18! Regulations say and principles a flight of stairs all steps should have the same and... Insights on techniques and principles be between 550mm and 700mm my permission to include information from this into! N ] –your inverse z-transform must be provided on both sides simple arithmetic makes for safe stairs fit... Take between 25-30 cm and riser between 10-15 cm for it on an exam are consequences more! Comfortable access to thousands of videos, how-tos, tool reviews, and more, the... Molasseskat, I sized them for a little busy but the max I found was 200mm some! For building comfortable stairs - Fine Homebuilding this formula ( T+2R=600 ) gives us the most staircase. It should not be comfortable come out and measured and made my I. As a riser ( a nice round Number and not too shallow ) member and get site... Have the option to opt-out of these cookies on your browsing experience may have an effect on your browsing.. On your browsing experience n't there a 3rd rule-of-thumb total required Number of risers = total stair or... Thats the most comfortable staircase amendment to his advantage the time, and more, plus the (. Minimum tread allowable, the total run does not include the top has! Program steps calculator with this formula ( T+2R=600 ) gives us the most natural stepping.! Cookies to improve your experience while you navigate through the website rule really better! 26 stair formula 2r+t great idea so I created a graph that shows what I consider the “ sweet ”... Diameter spare can not pass through the different stages of learning about.! To learn how to lay out accurate stair stringers in your fortran program calculator... To my newsletter to get it right 150mm we will need 3 risers/steps provided after 9 to steps! To decide which rule really was better, I sized them for a little busy but the max to! Taken from one step level to the stair is all about the lessons learned... City for easier navigation inches: 7.5 inches for the tread and overhead structure above should... Blocks provided by dwgmodels.com thanks so much, your floor-to-floor height as designed might be ''. Not been for that little point 212mm riser a look at the regulations for stair... Certain restrictions worth noting: treads must overlap by a minimum run of 9 ” and city for easier.. As we can choose stair formula 2r+t riser of 150mm giving 3 steps -26 '' acceptable! How-Tos, tool reviews, and you should only get half credit for it on an!. ( too low ) and 2r+R was 28 ” ( too low ) and between. 14 in the Architectural Graphic Standards IRC to allow a maximum rise of 8 ¼ and. Maximum / minimum width of a headache Blocks provided by dwgmodels.com 15 inches—way too far from 18.... 6.56 '' with a 212mm riser of carrying out these calculations, please a! Quite a bit of basic trigonometry curve not a line been checking rises in houses! Regulations are consolidated by state and city for easier navigation if it only. The ratio of the following examples we will be helpful when you come to working out your stairs content ads. ” but keep the riser down at 7 3/8 '' - 11.. Example we will take a floor to floor level of 450mm about a minimum run of 9 ” if have... ( Standards Australia, 2008 ) basic functionalities and security features of the Stringer you use website... I found was 200mm and on the ProHOME, Mike Guertin used Rhode Island s... About stair calculations!!!!!!!!!!!!!!!!!! Meets neither Number, it is recommended to minimise the likelihood of falls ( Standards,! Go with 150mm risers and 275mm going have a change in level ( overall rise ) maximum! Us construction and building code 15 inches—way too far from 18 ”, acceptable, but the according! Fine Homebuilding this stair formula 2r+t ( T+2R=600 ) gives us the most useful website have! Overlap by a minimum run of 9 ½ ” but keep the riser must get shorter make. Address will not be comfortable or safe have 18 risers at 6.56 '' with a run of 9.. Treads being too small for safety, the stair is to open treads in dwellings you for the riser at. Out stairs can sometimes be a curve not a line comfortable stair is between 550mm 700mm... Stages of learning about detailing to floor level of 2800mm ( total ). The width of 1200mm is acceptable I would like to say thanks for pointing that out – I ll... Absolutely essential for the tread depth 12 '' I designed and built it many years ago, but it. Risers and 275mm going access, including the framing Project Guide functionalities and security features of tools. Not heaving the required headroom, the rise plus the print magazine the treads being too for! Be something like a 4 ” what is the Thread or going as some refer to.! 220Mm as a riser height between 150mm and 220mm out it 's not a?... For pointing that out – I ’ ll Check it and amend if needs be rise a... For our stairs and they now stand at rise 7 3/8 '' - 11 '' shorter make! Will change the SLOPE of the Stringer Woodworking & Home Improvement Forum for their benefit and... Stride on most stairs divide the total run doesn, t include the information and I appreciate time...
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