![]() There is another stair option that can take up even less space than a spiral stair, Ladder stairs. This type of stair requires little space and is self-supporting, but is trickier to travers than a typical straight flight for example. Much more common is the circular stair that cantilevers it’s treads off a central load bearing post typically made of steel or timber. Return flights may be built as free standing but are normally built against walls (it depends on design requirements).Ī traditional circular stair has treads that are cantilevered of a circular surrounding wall, this type of stair is costly and is uncommon in residential construction. The return flight stair is the most common stair used in Australia for flats and houses and can include Half or Quarter landings. It is possible to change the direction of a wall and stair to follow a different angle like 30 degrees or 45 degrees. The 90 degree flight is usually built against many walls meeting internal and external walls. The 90 degree flight is very space efficient for small two story dwellings or town houses. Also remember flights must not have more than 18 rises in one flight, landings must be added between flights. No landing allowances are included in above table, if required just add a minimum of 800mm to your landing length. Straight Flight dimensions for stairs with nominally 250mm runs. The BCA will allow lengths of mid-flight landings to be as little as 750mm. Mid-flight landing depths are traditionally the same width as the stair width. This reduces the amount of space accommodating the stair. Most straight flight stairs are built against a wall or between two walls. These are generally built with or without landings with a maximum of 18 treads in each run. The simplest form of stairs is the straight flight. Variations on these are conventional, spiral, circular and open-riser. There are three types of stairs – traditional, contemporary and concrete. Ensure the finished underside of your stair in no less than 2m off finished floor level near doorways.Ĭoncrete stairs Stair types & dimensioning.A bathroom is not considered a habitable space and can have ceilings as low as 2.1m high (please check with the latest BCA requirements).Only 2/3 of a habitable room needs to have a ceiling height of 2.4 the rest can be lower (please check with the latest BCA requirements).Use the underside of your stair as a lighting bulkhead (See section above).Stairs - Section Plan (click to enlarge image) Tips from the trades If you have no choice but to include stairs in habitable areas (these are areas that require a ceiling height of 2.4m) there are a few tips from the trades you should know. ![]() This is common with staircase design It is done to avoid wasted space and to hide stairs that would otherwise interfere with head heights in other spaces. Plans A & B above show storage spaces underneath the stairs. ![]() If space and costs are an issue, keep your stairs simple and multifunctional. Plan B: Efficient use of space (click to enlarge image) Australian standards for stair construction will allow for narrower stairs but narrower stairs will be uncomfortable to use, especially if you install a hand rail or have winders. In a typical Australian house is not uncommon for a staircase to be 1.4m wide x 5.9m long.ĭo not forget your stair dimensions will need to be mirrored onto all floor plans.Īvoid designing stairs any narrower than 880mm wide when finished (i.e. You can safely assume that a staircase will require a minimum width of 1.1m and a minimum height of 3.5m long. You may need to factor in circulation space around the stairs as well. Stairs can take up a considerable amount of space. Plan A: Good and bad stair locations (click to enlarge image) Space and design They force people to go through the dining area and also make users spend more time getting to other areas in the house. The brown coloured stairs are not in a good central location. This saves travel time around the home and offers privacy to other spaces in the home. Note in the plan below, the orange coloured stairs are in a good central location i.e. Staircase location can vary depending on your requirements but most stairs are centrally located and handy to the main entrance as well as the main living space. Remember all items should be confirmed by referring to the latest Australian building codeĭeciding on the location of your stairs needs to occur early in the design phase. Here are 5 essential tips to ensure your stairs are designed and constructed for comfort, style & safety. Stairs not only need to be located in an appropriate location, but they must be comfortable to use and safe for their users. When designers are planning spaces within the home stairs are often redesigned many times before they are built.
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