Guidance on how to support spiral stairs projects

Choosing and knowing how to deal with spiral stairs design for perfect installations 

Convergence of functionality and aesthetics at the highest levels is what is required of a stair solution project, especially if we talk about indoor stairs which in the first place often have the obligation to deal with horizontal spaces as well as vertical.

Since the primary need of the interior is frequently the optimization of the sizes, it often turns out that the best solution corresponds to the indoor spiral stair; spiral stairs structure, but also the hybrid one ( helical spiral stair) with open pole, meet this criterion but require special attention during the design.

Types of stair tread for spiral staircases (coverings and shape), depth of riser and tread determine not only a harmony of the structure, but also its ease of use: the design quality of a modern spiral   staircase-helical is defined both by the aesthetic result and by the functional criterion, to this is added naturally the quality of the materials used, the realization and professionalism of the installation. 

Design of the structure of a spiral staircase

Design of the structure of a spiral staircase

Despite the solutions of the internal stairs, straight stairs, spiral stairs, loft stairs, floating stairs, attic stairs etc sweep more and more thanks to creativity, ingenuity and new technologies that allow you to make the most of the materials, in residential construction especially space saving stairs with a well-defined and eye-catching footprint are still the most present in the wish list of many.

Where the retractable stairs are the last choice, the indoor spiral stairs, even with small  diameter, meet various needs, including the vertical connection to loft spaces; circular, square or elliptical, closed or open central pole … the structural anatomy and the finish product can change a lot, and the steps design options for spiral staircase that branch off from the central support (missing in the helical stairs proper) also with some further help, is fundamental.

Dimensioning and spiral stair steps for a easy use 

Dimensioning and spiral stair steps for a easy use 

Whatever the type of  indoor spiral or outdoor spiral staircase provided, steel spiral stair, wood spiral, a custom spiral stair or spiral staircase kits, with design features or simple and essential, the relationship between riser and tread and consequently the numbering of the steps for spiral stairs is a major topic for the safety of those who use stairs. 

The Italian law uses, among the many formulas produced over the centuries, the famous formula of Blondel, which assumes that the vertical lifting of the foot involves double effort compared to its horizontal movement; this means that the ideal ratio between tread and lift should coincide with 2r (raised) + t (tread) should be between 62 and 64 cm. Along the route (thanks to the diameter of the  spiral stair more or less 30 centimeters from the handrail) you will calculate the size of the tread, considering that it should not fall below 25 cm in any case.

Spiral stairs steps, however, have a triangular anatomy so the tread is not homogeneous in size from the center to the outside; always with regard to the steps for spiral staircase, the calculation of the rise of steps standard height, so decisive in the convenience of the journey, also derives from the fact that each step for safety should be 200 cm from the same located in the upper module.

Clearly, about this, the spiral staircase diameter, whether we talk about  outdoor spiral staircases

or indoor spiral stairs, has a weight: the more the spiral structure has minimum dimensions in terms of stair diameter and the greater the rise will tend to be, in order not to narrow the tread too much etc. 

Round spiral staircases, square spiral stairs, space saving or monumental helical stairs, types of wood, painted steel, metal with coatings and so on: you’re building your perfect stair solution

Round spiral staircases, square spiral stairs, space saving or monumental helical stairs, types of wood, painted steel, metal with coatings and so on: you're building your perfect stair solution

We know that the choice among the largest selection available of indoor spiral stairs, sometimes even a helical staircase that however develops vertically, focuses on the meeting of minimal footprint, so no waste of space, aesthetic value and convenience of use. All these elements find a compromise, as often happens in the indoor stairs.

Vertical connection requirements and small sizes should not preclude a style investment, on the contrary! The steps for spiral stairs above all – but it also applies in part to helical  stairs spiral variants – have a fundamental role in the technical design, as we have seen, but also in the exquisitely aesthetic design (materials, finishes, details). 

Metal spiral stairs, as well as helical industrial spiral stairs, i.g a painted steel spiral stair, a satin steel spiral stair, a galvanized spiral staircase etc. It is wonderful in its material essentiality when left so to speak naked, but it is wonderfully customizable with various coatings, turning it into  high quality solid wood spiral stairs (metal structure and wood treads). 

The color of the structure, be it metal indoor spiral stairs or classic wooden stairs, can provide a contrast with the covering materials (natural metal and oak, or black painted steel and a light colored essence).

A metal spiral staircase, therefore, giving a practical example, can be designed with a square plan, such that it can also be inserted in angular spaces, with a painted steel structure, such as white steel extremely versatile, may have covered treads in solid oak in line with a parquet already present, with magnificent final effect.

The exploitation of small spaces, otherwise unused corners, easy installation, usability in a wide range of architectural situations, make the spiral staircases versatile, comfortable and beautiful structures provided that the design is well followed, and the choice of materials qualitatively high. 

For a beach house or a small space in a condo, a modern villa or a commercial area,  for your personal contemporary living room you can find a range of options, among space saving spiral stairs, forged iron spiral stairs, modern spiral staircase kits, special custom spiral stairs and so on.

Discover the spiral stairs by Officine Sandrini

Discover the spiral stairs by Officine Sandrini

If you are looking for the distinctive element to give a unique design touch to your spaces, spiral stairs could be perfect for you: with their irresistible warmth and irrefutable functionality, these installations represent the essence of modern elegance.

Discover exclusive models among Officine Sandrini spiral stairs: fill in the following form to receive our new brochure free of charge. Become the protagonist of an amazing and inspiring space, tailored and uncompromising!

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