Widths of stairs. Stairs that are too narrow are a hazard in many ways. The Scottish building regulations also stipulate a clear width of stair for domestic use which is completely omitted from the part K regulations used in the rest of the UK. Also referred to as an e-z winder, spinner, and various other names, the kite winder is a very useful tool for minimizing the space taken up by a staircase with a turn. General guidance on staircase design is contained within the new Approval Document Part K - 2013. This article shows how UK Bathroom Guru added a downstairs toilet under the stairs of a semi detached house in Leeds. Treads and Risers. There are different rules for spiral staircases. Spindles on the handrail should not allow a 100mm sphere to pass through, this is to prevent young children from getting their heads caught between the spindle. Arched staircases, which curve gently upwards are another popular domestic staircase option while spiral staircases are also popular for aesthetic appeal; If you need to save space, compact stairs can be a good option but it’s important to make sure that they comply with building regulations. A minimum staircase width of 600mm is recommended for secondary staircases. Building a staircase is often tough on its own, but UK building regulations make this task even harder. Uncategorized. The length of the step (referred to as the ‘going’) should be a minimum of 220mm and a maximum of 220mm. In the case of escape routes and stairs, handrails and strings which do not intrude more than 100 mm into these widths may be ignored (see Diagram C1). Before we dwell into the specifics of stair regulations in the UK, it is important to note that Scotland has its very own guidelines and principles when it comes to stairs, while Wales, Ireland and England shares theirs, or at least when it comes to staircases. Narrow stairs make it more difficult to carry items up and down the stairs. We are not affiliated with the website below but they do have a staircase manufacturing price guide that’s based on the measurements you can easily take in your home: Landings are required at the top and bottom of each staircase and should be level and flat, although landings at ground level may have a gradient not exceeding 1:20. The minimum width of stairs for the different types of buildings is shown in the table above. Minimum Clear Tread Width: Riser Height: Minimum Inner . If it is more than one room then the minimum width is 840mm, but 860 is more standard. We can help! However, to ensure that a staircase is visually pleasing and comfortable to use, we recommend that your stair width is greater than 860mm including the strings. A minimum of 2,000mm of clear headroom is required vertical above the pitch line; Maximum width & length of staircases. If the stairs are more than 2 m wide, then they should be divided into flights of no less than 1,000 mm. Gaps between the handrails should not be big enough to allow a 100mm sphere to pass through them. There are rules on widths for disabled access and direct fire escapes but unless your property was built specifically for disabled access there’s no guarantee your staircase will be wide enough for a stairlift.. Properties built later than 2010 generally have a minimum of 800mm clearance … A kite winder also has rules that must be adhered to. Stairs should have a minimum of 2m clear head room (H) over the entire length and width of the stairway and landing, as measured vertically from the pitch line or landing. This distance must be at least 36 inches and does not include handrails. If staircases are less than one meter wide they should have a handrail on at least one side.  Like. For dwellings, for external tapered stairs that are part of the buildings, the going should be a minimum of 280 mm. Where an exit is approached from a stepped gangway, place a landing the width of the exit and a minimum of 1100mm deep immediately in front of the exit doors. A secondary spiral stair assessing a loft, basement, or mezzanine will require a 600mm clear tread width. Staircases come in all sizes, shapes and materials and can be custom made to suit your property. Maximum 4-1/2 inch handrail projection into stairway width, on either side. You do not need a handrail on the first two steps up. Maximum 12′-3″ vertical height (rise) for a flight of stairs. They either act like a turning point where the staircase changes directions (but still continues), or part of the floor at the end of the staircase. No recommendations are given for minimum widths in England, Wales and the Isle of Man. The rails used for guiding a stair-lift may be ignored when considering the width of a stair. There are no regulations for the minimum width of a staircase. Amazingly, under UK building regulations, there’s no minimum width for domestic staircases. For public buildings the length of a staircase is limited to 16 risers maximum. The rise has to fall between 150 and 2… No recommendations are given for minimum widths in … COMMERCIAL STAIR WIDTH. Cupboard onto landing 20 9. 600mm clear width; A centre going of 145mm. You can learn more about cookies and how to control or delete them here. Where staircases form part of means of escape, reference should … If the stair width is more than the minimum specified width, handrails are to installed in the stairs. Here are some of the basics: • Loft conversion where to put stairs • There must be at least 1.9m of headroom at the centre of the flight • There must be at least 1.8m of headroom at the edges • The maximum pitch of stairs is 42 degrees • There is no minimum width. Minimum 10 inch stair tread depth with nosing or Minimum … It will take only 2 minutes to fill in. standard size of stairs for residential in mm. A stair flight is a run of stairs or steps between landings. Going: Minimum Centre . The UK building recommendations (called "Document "K") does not impose a minimum width of stair tread. If it acts as your main staircase (meaning it serves two or more rooms), a spiral staircase should be 800mm wide with a maximum rise of 220mm; the length of the steps should be at least 190mm. Unlike residential stairs per the IRC, where the width is just a given measurement, commercial stair width per the IBC is based on capacity. To help us improve GOV.UK, we’d like to know more about your visit today. The minimum width of stairs for the different types of buildings is shown in the table above. As an example, if you want to build a regulation staircase, all risers will have to come at the same size. In normal circumstances, therefore, the acceptable stair width for apartment blocks would be as follows: Non fire-fighting stair: 900mm (between handrails) Fire-fighting stair: 1100mm (between walls/balustrade) The edges of steps, referred to as the lip or nosing, should be at least 16mm. Minimum width of stairs designed for phased evacuation 48 9. You should also consider how furniture will be transported upstairs. See Our Full Price List The Gardener’s Corner Get a Quote Calculators Budget Planning Spreadsheets Tradesman’s Day Rates & Wages Help Guides See All Of Our Polls Free Photos Visit Our Blog Login, Privacy. Minimum 6′-8″ headroom height clearance for stairway. 1. Landings must … Dividing flights 18 6. UK Staircase Landing Regulations. We’ll send you a link to a feedback form. In that case, these two flights can have different rises compared to each other. The width of one stair, after all, will need to be consistent with the rest of the stairs. In buildings, stairs is a term applied to a complete flight of steps between two floors. 7 simple ways to prepare your home for autumn, Household Maintenance Tips: Keep Your House As Good As New. An escape route is the width at 1,500 mm above floor level when defined by walls or, elsewhere, the minimum width of passage available between any fixed obstructions; A stair is the clear width between the walls or balustrades. However, it’s important to make sure that your new staircase not only looks great, but that it’s also safe to use – that’s where stair regulations come in. - A minimum width between handrails of 1000mm. However, they will be very large if applying the following rule: “Twice the individual rise plus the going (2R +G) must be between 500mm and 700mm”. June 30, 2019 Building Regulations for Stairs UK; This page is part of the staircase design series. General Access Stair (Industrial): The General Access Stair requires a clear width between enclosing walls strings or upstands of 1200mm, and a minimum width between handrails of 1000mm. Firstly measure the width and depth of the opening as shown. However the recommended minimal with should be between 800mm and 1000 mm, to allow not only to only climb that staircase with comfort but you can actually bring something up on it. Stair width 1800mm due to increased usage Stair width 1600mm due to lower usage Stair width 1600mm due to lower usage 1600mm wide stair 1800mm wide stair Circulation Teaching, administrative and support accommodion All stair widths 1600mm due to equal usage 1600mm wide stair Circulation Teaching, administrative and support accommodion For buildings other than dwellings. In design compliance for buildings, the minimum stair width will be the minimum to satisfy Building Regulations B (or BS9991), M and K, all at the same time. Reduced headroom for loft conversions 17 5. Exception 1 in Section 1005.3.1 allows for a reduction in size when a building is … A stair, or a stairstep, is one step in a flight of stairs. The handrails introduced shall not project more than 4 ½ inches on either side. Because of that, in most building regulations these are called “private stairs”. By browsing our site, you agree to their use. Other stairs can be usually be deemed to be for escape purposes only and be of the Utility Stair type. The shoulder should be no less than 1.8metres. However, the 2 kite winders would not comply with the regulations but 2 different kite winders might. As the diagram below illustrates, the clear tread width does not refer to the radius – the centre column and handrails must be factored in to establish the actual diameter. - A minimum stair width between enclosing walls, strings or upstands of 1200mm. Ideally, we would like to end up with a staircase that not only passes regulation but practical too. The minimum headroom is 2 metres, however, there are different rules for stairs that lead to a loft conversion. The UK building recommendations (called "Document "K") does not impose a minimum width of stair tread. Exceptions. A stair with kite winders normally has a combination of straight treads and winder treads. The maximum height or length of a staircase is measured by the number of risers. The result should be between 550mm and 700mm. Regardless of which you choose, its width at least has to match the narrowest section of the stairs. For existing buildings, alternatives may be proposed if the dimensional constraints do not allow these requirements to be followed. The dimension of landing in the direction of travelling should be at least equal to the width of the stair and it should not surpass 1219mm where the stairway is a straight run. The minimum headroom above stairs should be measured vertically from the pitch line. Widths of stairs. The width and number of stairs required is dependent on the number of persons using the floor area and travel distances to a place of safety. Minimum going from the centre of the tread: 190mm. Alternating tread stair 22 11. Because the ceiling height in most lofts is lower than in other parts of the home, there are special rules regarding staircases and headroom. Width of flights of stairs. Maximum 7-3/4 inch stair riser height. This would be a minimum of a 1370mm diameter spiral in any of the cast aluminium ranges. 6.6.7 Headroom and width Staircase openings shall be adequately sized. If the width of the staircase is over 1000mm an additional handrail should be installed, more about handrails further down this page. Landings next to doors 19 8. Minimum 10 inch stair tread depth with nosing or Minimum 11 inches with no nosing. The height of handrails should be between 900mm and 100mm. When it comes to the width of your staircase, there are no restrictions, but standard flights measure 860mm, and for a main staircase it is agreed that a width of between 800mm and 900mm works best. From our own experience, we know that a staircase leading from a first floor into a loft conversion costs around £1100 inc VAT. 600: 1448: Private spiral staircase — a main staircase within a home There must be at least two metres headroom around all parts of the staircase. Currently, the maximum number of risers allowed in a straight line is 36, after which there should be a change of direction of at least 30°. These are minimums, if you can achieve a 2 metre headroom then you should do so. The minimum headroom above stairs should be measured vertically from the pitch line. Even in those places, however, the minimum headroom cannot be lower than 180mm. The maximum width of a public staircase is 1800mm. For stairs serving a single user (typically private residential), a minimum of 36” (91 cm) is required. If the staircase is more than 1000mm wide, you’ll need a second handrail located on the opposite side. Visit Claire's corner for insightful research into topics she's passionate about. In design compliance for buildings, the minimum stair width will be the minimum to satisfy Building Regulations B (or BS9991), M and K, all at the same time. The maximum pitch of a domestic staircase is 42°. Building regulations for loft staircases. Minimum headroom 17 4. The requirements for spiral staircases in the UK are described in British Standard 5395. Minimum Size For A Downstairs Toilet. For loft conversions, the generally accepted minimum width is 600mm, however between 700mm and 750mm is recommended. The centre of the staircase should be no less than 1.9 metres from the ceiling. However, building industry recommendations suggest a minimum stair width of 600 mm (23.6 inches), with a recommended width of 850 mm (33.5 inches). Spiral Staircases A spiral staircase may take up only half the room of a standard staircase, and, therefore, it is useful where space is an issue. Capacity of a stair for basements and for simultaneous evacuation of the building 47 8. Building regulations for loft staircases. Replacing existing staircases with a like-for-like. Staircases with alternating steps and those found in commercial buildings are not covered by this guide. A staircase or stairway is one or more flights of stairs leading from one floor to another, and includes landings, newel posts, handrails, balustrades and additional parts. The minimum requirements 800mm clear width (900mm in Scotland) and a centre going of 190mm. This is important for obvious safety reasons. Approved Document K includes advice on protection from falling, collision and impact. 1.1. Regulations, Stairs & Railings Landings next to doors 19 8. That said, each flight may have different individual rises on a staircase with a landing. Become informed about tradesman's prices and use our guide as a starting point. For three simultaneous users, a minimum of 74” (188 … (b) minimum unobstructed width. Landings should be level; however, a ground floor landing can have a gradient of no more than 1:20. There must be a minimum of 2000 mm headroom at every stage while going up on a staircase. Building regulations. Building regulations. In addition to a category A stair, this private stair can also provide the main access to the upper floor of a private dwelling. We offer two diameters of spiral stairs, 1400mm and 1600mm. Compare prices for hundreds of jobs and find the average cost. Length of Staircase. Going Maximum Outer Going: Category A – Small Private Stair. Data & Cookies About Us Contacting Us Disclaimer. Change of direction in flights 19 7. Factor the Best Position in to Your Staircase Design he minimum width of stair tread that most standard size stairlifts can be fitted to is 73cm (29 inches). (adsbygoogle = window.adsbygoogle || []).push({}); Need to find professional to build a staircase? The rule for all treads states “Twice the individual rise plus the going must be 500mm and 700mm” which can be a problem with 2 kit winder boxes. Fig.7: Width of landing determined based on the stairway they serve. This is normally known as a Category A staircase. If you want to pass spiral staircase building regulations, for example, you will have more homework to do. Measuring tapered treads 21 10. Buy standard staircases to order online from £159.99 excluding vat, we have straight staircases available ready made and we have a selection of standard sizes winder staircase designs fixed sizes from a UK ISO9001 staircase manufacturer s12n2600 s12n2700 s13n2800 standard sizes low prices It will take only 2 minutes to fill in. Staircase width refers to the side-to-side distance if you were walking up or down the stairs. The length of each step is referred to as the “Going”. 3. Suitable handrails for common stairs in blocks of flats 24 12. This distance must be at least 36 inches and does not include handrails. For a staircase with a kite winder, if the stairs are more than 1000mm wide then please contact us. 1.15 For flights of stairs, provide all of the following. In buildings, stairs is a term applied to a complete flight of steps between two floors. It’s obviously ideal to have even more, but that is the bare minimum from a regulatory standpoint. The landing must be wider than the width of the staircase. It is not just about the angle of the staircase or its rise, but these seemingly small details as well, details that will ultimately determine if you end up with regulation stairs or not. The pitch of a domestic staircase (how steep it is) should be a maximum of 42 degrees. Part K Building Regulations : The width of stairs In addition, the headroom over the stairs has to be at least 200mm, unless the space is very limited, like in a house for example. The problem is, this will be greater than the maximum 700mm required by the building regulations. Minimum widths of escape stairs 46 7. Maximum 7-3/4 inch stair riser height. Stairs that have treads narrower than this are considered narrow and it may pose a potential safety risk to install a seated stairlift in such a small space. Minimum clear width between core pole & handrails: 800mm (900 in Scotland). The minimum requirements. However, building industry recommendations suggest a minimum stair width of 600 mm (23.6 inches), with a recommended width of 850 mm (33.5 inches). For other stairs, a minimum width of 1,200 mm, and 1,000 mm between handrails. When it comes to the width, there is no regulated minimum. Width of escape stairs 45 Calculation of minimum stair width 45 Protection of escape stairs 49 Basement stairs 51 External escape stairs 52 B1 Section 5: General provisions 53 Introduction 53 Protection of escape routes 53 Doors on escape routes 53 Stairs 54 General 57 Lifts 58 Mechanical ventilation and air-conditioning systems 59 Refuse chutes and storage 59 Shop … Staircase Width: 36 Inches, Minimum . Here are some of the basics: • Loft conversion where to put stairs • There must be at least 1.9m of headroom at the centre of the flight • There must be at least 1.8m of headroom at the edges • The maximum pitch of stairs is 42 degrees • There is no minimum width. Under staircase dimensions mistake I've come across several homes where this staircase design mistake has been made. 4. The industry standard for stair widths is 860mm but it’s not uncommon to see stairs between 800mm-900mm. It may be that you will need to extend your current well Opening. Dividing flights 18 6. For fire escape purposes from small blocks of flats BS9991 requires a 750mm wide stair. Semi-public and public stairs: refer to Dcument M (mentioned before) to facilitate access for disabled people and to the Technical Guidance Document B – Fire Safety for facilitating means of escape. Minimum 36 inch clear width for stairway. The default safe standard to work to for private and public stairs is 1 metre unobstructed width, measured between handrails (or walls, where there are no handrails.) If you want to pass spiral staircase building regulations, for example, you will have more homework to do. 1.14 For stairs that form part of means of escape, refer also to Approved Document B: Fire safety, Volume 2 – Buildings other than dwellinghouses. Staircase Width: 36 Inches, Minimum Staircase width refers to the side-to-side distance if you were walking up or down the stairs. We’ll send you a link to a feedback form. Spiral staircase building regulations are slightly different. We use cookies to ensure that we give you the best experience on our website. To overcome this you can simply add an extra handrail, newel and spindles to divide the staircase. a staircase in a home which doesn’t go to a communal room like a kitchen or an access stair to a small room not used by the public for a commercial property. You should also complete this simple calculation: Double the rise, then add the going. There must be a minimum of 2m headroom to bulkhead. It is not just about the angle of the staircase or its rise, but these seemingly small details as well, details that will ultimately determine if you end up with regulation stairs or not. Domestic staircases shouldn’t be more than 36 steps long; another staircase must be installed separated by a landing if you need more length. UK building regulations stairs are no joke. For fire escape purposes from small blocks of flats BS9991 requires a 750mm wide stair. The good news is that the building regulations state that you can replace an existing staircase with an identical one even if it doesn’t meet the current regulations. 3. The maximum pitch is still 42 degree but the minimum going (tread depth) required is 225mm in Scotland opposed to the 220mm minimum elsewhere. The clear headroom (h) over the entire length and width of a stairway, including landings, should be 2.0m. There is no maximum width of commercial staircase but they must be split into sections no wider than 2000mm, including adding an extra handrail, newel and spindles to divide up the staircase The clear headroom (h) over the entire length and width of a stairway, including landings, should be 2.0m. When it comes to spiral staircase dimensions, what size the diameter should be is an extremely common question in which there is no straight forward answer as it depends on the usage of the staircase. The handrails introduced shall not project more than 4 ½ inches on either side. Min Clear Width Between Pole & Handrails: 800 (900 in Scotland) Min Going Centre of Tread: 190. It also shows the steps required to … The Staircases Building Regulations cover the design of a staircase and is covered by BS5395: Part 1, BS5395 Part 3, & BS 5960 Part 5 and others British Standards. The new staircase must not be worse than the original (in terms of the regulations). Regulated by building codes, stair details specify the sizes of risers and treads, stair widths, the placement of handrails and guardrails, and construction methods for fabricating stairs. Minimum and maximum rise per tread: 170-220mm . Change of direction in flights 19 7. Comfortable two person stair widths range between 49” (125 cm) to 60” (152 cm). In other words, you cannot have some risers at 200mm and others at 205mm. The Complete TV Aerial Installation Guide. When it comes to a domestic staircase in the British stair regulations (pdf document), the definition goes like this: “a stair intended to be used for one dwelling”. The minimum nosing for a domestic staircase is 16mm: The location of the handrail should be between 900mm and 1000mm above the highest point on the staircase steps. Buy standard staircases to order online from £159.99 excluding vat, we have straight staircases available ready made and we have a selection of standard sizes winder staircase designs fixed sizes from a UK ISO9001 staircase manufacturer s12n2600 s12n2700 s13n2800 standard sizes … Open rises, which are steps with a gap between them, should be constructed so that a 100mm sphere can’t fit through them. Staircase Building Regulations. minimum of an 1830mm diameter (2083mm in Scotland) spiral in any of the cast aluminium ranges. The only exception is when you build a staircase where a landing separates two sets of flights. The top of the handrails cannot be higher than 1000mm from the staircase and ideally, it would fall between 900mm and 1000mm. There must be a landing at the top and bottom of every staircase. To help us improve GOV.UK, we’d like to know more about your visit today. Suitable handrails for common stairs in blocks of flats 24 12. For dwellings 1.16 In exceptional circumstances where severely sloping plots are involved, a stepped change of level within the entrance storey may be unavoidable. Measuring tapered treads 21 10. var id_conf = '68f79e6f435275e52eada043a12c0902'; When it comes to the headroom, regulations are once again pretty clear. How much does timber treatment cost in the UK? Luckily for us, these stair regulations for buildings are fairly straightforward for the most part, making the whole process at least a little bit easier. Private stairs: widths no less than 800 mm (please refer to Technical Guidance Document M – Access and Use for facilitating people with disabilities). spindles and handrail instead of a handrail fixed to the wall. Twice the individual rise plus the going must be between 500mm and 700m (2R +G) and will only create problems in extreme situations. Semi-public and public stairs: refer to Dcument M (mentioned before) to facilitate access for disabled people and to the Technical Guidance Document B – Fire Safety for … A 100mm diameter sphere cannot pass through any openings. This figure includes the manufacturer, supply and install of a typical staircase with one winder (turn). (b) minimum unobstructed width. Each step on the staircase should be the same height and length, you cannot have one step at 190mm and the next at 210mm. If it was calculated to be less, such as 40 inches for example, a width of 44 inches must be used since that is the minimum as noted above per Section 1011. If your staircase is accessing a lounge and/or kitchen then larger stairs are normally required under the Building Regulations. The stair's width usually varies depending on the type of building the staircase is in, but for a normal residence, the standard tends to be 3 feet, 6 inches (106.7cm). Amazingly, under UK building regulations, there’s no minimum width for domestic staircases. A straight staircase is the most common and practical option but you can go for winder staircases which have a 90 and 180-degree turn in them. You should also consider how furniture will be transported upstairs. Stairs … Secondary staircases, such as those used to access a loft conversion are often more narrow with 650mm commonplace. This page is not intended to replace the full building regulations document but highlights some of the key points for domestic staircase installations. As for the length of your stairs, this is naturally dictated by the number of stairs you need, and their own height and width restrictions - more of this in a moment. Min Going (mm) = 250 mm Max Going (mm) = 400 mm. An individual rise must be between 150mm and 220mm, An individual going must be between 220mm and 300mm, All risers must be the same on a flight of stairs. For dwellings, for external tapered stairs that are part of the buildings, the going should be a minimum of 280 mm. Minimum number of escape routes and exits from a room, tier or storey 40 5. Approved Document K requires that if a staircase design uses … Do You Consent to Our Data and Cookie Policy? In order to determine this the code refers us to Section 1005.1, but before we look at this section the code does say that the minimum width shall not be less than 44 inches. If DIY isn’t your strong point, hit the button below to see how we can help: The Most Powerful Moss Killing Chemical You Can Buy, 6 Major Home Improvements You Can Do WITHOUT Planning Permission. STAIRCASE CATEGORY: C A small semi-public stair intended to be used by a limited number of people, some of whom may be unfamiliar with stair for example a stair in a factory, office, shop or common stair serving more than one dwelling. Users could injure themselves by knocking into the wall or banister, and other people using the stairs may not … Width. Stair details refer to the standard requirements for each of the various components of a flight of stairs. Knowing what kind of headroom or winder you can use is very, very important. Maximum 12′-3″ vertical height (rise) for a flight of stairs. A stair is the clear width between the walls or balustrades. Stairs that are too narrow are a hazard in many ways. Maximum 4-1/2 inch handrail projection into stairway width, on either side. https://www.homebuilding.co.uk/ideas/staircase-design-guide There are a few exceptions worth mentioning. The minimum staircase width is the same as the minimum circulation zone width of 3ft / 0.91m. A staircase or stairway is one or more flights of stairs leading from one floor to another, and includes landings, newel posts, handrails, balustrades and additional parts. The guide above is for standard domestic staircases in a private dwelling.

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