STAIR RISE RUN CALCULATIONS CONTENTS Stair Building Calculations simple arithmetic makes for safe stairs that fit the situation. Stair design basics calculating step riser height, step tread depth, total rise, total run, intermediate platform lengths. Very low angle stairway design. Stairway rule of thumb. Measure Actual Stairway Total Run Length Total Rise Height. Stair Calculations by Direct Layout on the Stringer. Front Matter Title Page, TOC, Preface and Forward Sample Pages. This best selling title has been thoroughly revised to reflect the 2015 International Building Code. A road is a thoroughfare, route, or way on land between two places that has been paved or otherwise improved to allow travel by foot or some form of conveyance. How to Measure Stair Rise Run over Uneven Ground. Stairs built over both an uneven hillside uneven bottom or top landing. Geometrical calculations for rise run. Calculate the Total Number of Steps, treads, or Risers. Halting Walk Stair Designs. Add Stair Platforms or Landings. Minor Adjustments fit a factory built stair to the specific stair rise run. POST a QUESTION or READ FAQs about measuring and calculating to build stairways low slope or low angle stairways, treads, risers, stairway run, stairway landings platforms. REFERENCESInspect. APedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website. Calculations you need to build stairs Here using simple arithmetic we explain how to make stair design calculations number of steps, step riser height, total stair height or rise, total stair length or run. We explain how total elevation change between two levels or floors rise and stair length run are used to calculate the right measurements when building indoor or exterior stairs to fit the building or the terrain. Details of methods for accurate stairway rise run measurement are provided for tough cases such as building a stair over steep slopes and irregular surfaces. The Government Printing Office provides free public access to fulltext federal documents, official federal information, federal information finding aids and federal. Revoked Building Regulations 1992 revoked with regulation 3 and Schedule 1 continued in force, on 31 March 2005, by regulation 81 of the Building Forms. BibMe Free Bibliography Citation Maker MLA, APA, Chicago, Harvard. Stair codes Stair, railing, guardrail, handrail, landing platform building design build specifications summaries of stair and railing code design. We live on seismically active planet Bilham 2009 and in a world risk society Beck 2008, p. We describe how to translate the stair rise and run into a specific number of stair treads and risers that will be uniform and of proper safe dimension. We also describe how to design and build low slope or low angle stairways with special consideration for tread and landing dimensions to avoid halting walk stairs and other trip hazards. This article includes example stair building calculations and warns about some in between stair tread sizes that may be a tripfall hazard. Convert Song Into Lyrics Software For Ipad here. We also explain now to include landings and platforms in stair design calculations. Finally, we also explain how to adjust factory built or pre fab stairs to the exact stair rise dimension in your installation. Page top stair dimension sketch courtesy of Carson Dunlop Associates. Stairs/Handrailings_CIA_360_DJFs.jpg' alt='1997 Uniform Building Code Volume 1 Pdf' title='1997 Uniform Building Code Volume 1 Pdf' />Green links show where you are. Copyright 2. 01. 7 Inspect. Apedia. com, All Rights Reserved. Stair Building Calculations simple arithmetic for safe stair designs to fit any situation. Article Series Contents. How do we set the step riser height tread depth for a very low angle staircase Reader Question How do I design an outdoor stair for a low slope long run situation. Perhaps one of the experts here could give advise on this. What are the rules for a low angle staircaseI am planning an exterior built on grade staircase on a slope too steep for a ramp. My rise is 7. 8 in. I am considering 3 risers and 1. What rules of thumb should I follow to build a comfortable walk able low angle staircase If there is some formula to the ideal cadence I would form this in concrete in order to achieve it. I do not want to feel like I am taking baby steps or alternately taking a step and a half all the way up and down. Tom 62. 31. 2Our photo above left illustrates construction of a low slope stairway located in the Jewish Quarter in Girona, Spain. These steps are several hundred years old, are worn, and have a bit of a slope to them. Reply Here is a simple approach to calculating the stair rise run for a low slope stairway starting rule of thumb. Great question. Bernie Campbalik who taught us carpentry, including stair building, used a rule of thumb that basically makes the run longer when the rise is shorter. Ive seen several rules such as the sum of one tread and one riser should always be equal or greater than 1. The concept is that a low rise stair usually has, just as you suggest, a tread that provides a longer walking surface. Up to a point. If we make the rise too short under 4 inches of rise its not a step at all, its a trip hazard. Generally we solve the problem of low slope long run stairways by using all platforms steps that are 3. Our exterior stair photo at left illustrates one stair builders approach to a low slope stairway. He used a combination of asphalt and landscape ties to build these nice looking steps that incorporate several trip hazards. The projection of the wooden tie up about 34 above the walking surface of each step threatens to catch the toe of a shoe, leading to a trip or fall. And there is a naturally occurring risk factor wet surface of the steps. On these stairs the wet wooden landscape tie will be more slippery than the asphalt walking surface. Walkers will naturally tend to step on the wooden surface because it forms the leading edge of each step. And relevant to your question is the depth or run of each step in the direction of travel. While generally its good to use a deeper stair tread treads less than 1. A better stair design may involve increasing the rise and lengthening one or more steps into a platform of 3. And of course long stair runs due to a very tall total rise more than 1. Watch out make these stair steps long enough to avoid a halting walk stair fall hazard. See HALTING WALK STAIR DESIGNS for LOW SLOPES or SHORT STEP RISEReader Follow Up Dan, Thanks for your response. I now think any rule can at best only make general recommendations for all the low slope possibilities. I figured that if I could determine the optimum number of steps to comfortably traverse the distance of the slope of my proposed staircase I would then know the correct number of treads. So I marked off the landing locations and simply walked up and down the slope while counting the number of steps I took as I did so. I repeated this a few times adjusting my gait somewhat and arrived at an average number. In this case I took 1. Then since the landing counts as one of the treads I divided the rise by 1. I also counted steps made on level ground over the same distance as the length of the stair and came up with 1. I think 1. 4 is conservative considering the slope but about right for my needs. I am not in a hurry to build but before I do I would still like to hear a professional opinion or two on this. Another possibility might include a landing midway up thus making all the treads shorterYour input is appreciated. Reply stair design basics calculating step riser height, step tread depth, total rise, total run, intermediate platform lengths. Tom,I think a sketch of what youre up to would be helpful if you want to send one use the CONTACT US link at page topbottom. Meanwhile Ill provide my own versions, not to scale, of your stair dimension proposal and an alternative that you might want to consider and then adjust to your taste. Based on the figures you provided we describe for other readers the basics of stair design calculations that consider total rise, total run, and step riser height and step tread depth. Question how to build steps for people who have trouble climbing stairsJune 1. Anonymous said i am ask to build steps for an older couple ,one already has a hip replacement an the other getting one done, my steps height is three feet an the distance is five feet they need lower riserscan someone tell what the dimensions would be. Reply design the stair with a long run, deep treads, shorter rise, and secure handrailings. Anon You can make short rise steps by making the stairway run longer. For example if you have a total rise of five feet and you want a 3 inch step rise youd divide 5x. Of course youll want to make the stair treads deeper front to back to make such short rise steps safe and comfortable.