It employs a special formwork arrangement which requires skilled labor and expertise. Download stock pictures of Spiral staircase on Depositphotos Photo stock for commercial use - millions of high-quality, royalty-free photos & images. It can be constructed with or without a central column. Spiral concrete gives an ultra-modern look to the space. The spiral staircase can be of different types based on the material used for their construction: Spiral Concrete Stairs Always design the spiral staircase based on the respective building codes of the area that takes into consideration the functionality, loads, and traffic coming on it. The diameter of the stairs decides whether it fits to the space provided.
The width of the stair forms the diameter of the spiral staircase.
#SPIRAL STAIRCASES FULL#
Stair’s Full Rotation = Number of Steps x Rotation AngleĪ staircase of 12 steps has a rotation angle of 12 x 30 = 360 degrees 9 stepped stair has 9 x 30 = 270 degree rotation. It is 30 degrees for most of the spiral staircase.
The angle of rotation of each step is the angle at which each step rotates about the central column. The number of steps = Total Height of the stair/ Riser Height or Space between each step It is the measurement on which the safety concerns of the spiral staircase lie.įirst, ensure that the top platform stays with the landing platform and determine the height according to that.
The determination of the height of the spiral staircase is the most crucial measurement in the design. Spiral stairs can be customized based on the design, budget, and the safety concerns of the client.Īmong the factors mentioned, the first three are considered primary requirements to commence the design. Style of Threads, handrails and the balusters.The six essential factors considered in the design of the spiral staircase are: The handrails move around the perimeter of the spiral curve formed, thus making the stair more iconic. The depth of each step of a spiral stair remains uniform and equal. Custom Spiral Staircases We produce stairs for all residential and commercial markets Our stairs can be attractively clad in wood, glass or stone We are ISO. Plan and Elevation Diagram of a Steel Spiral Stair (As per BS5395-2 1984).This provision makes the stairs to fit comfortably in the given space.Fig.1. A spiral staircase has a 100mm smaller diameter than the given stairwell opening. First, take the dimensions of the stairwell opening. The stair diameter is used to determine the angle of rotation. It gives the height of the vertical rise of the staircase. The height of the vertical rise of the staircaseīased on the plan, develop a proper idea about where the stair starts from the bottom floor to where the stair stop at the top level.The three crucial factors taken into consideration while designing a spiral staircase are: Here the determination of the dimensions of a circular spiral staircase is explained.Īlso Read: What is Spiral Staircase? Design of Spiral Staircase But it is essential as a civil engineer to know the restrictions and basic concepts within the design of the spiral staircase.Īmong different configurations taken by spiral staircases, the most common is the circular format.
#SPIRAL STAIRCASES SOFTWARE#
There are BIM and other software to determine the spiral staircase dimensions.
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