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„Dumnezeu este in detalii” – Ludwig Mies van der Rohe
Stairs
One of the most important elements of a building is the staircase, which allows vertical movement from one level to another, connecting the floors.
Of course, the proportion between steps and risers is no longer a secret to anyone since Blondel proposed the famous formula [2h + l = 62 / 64], which ensures that steps and risers are designed to make climbing and descending as easy as possible.
As I was saying, staircases are connected to the structure of the house and are an integral part of it.
In all cases where construction is done using concrete and/or masonry, staircases must be designed and connected to the structural elements – floors, columns, and beams – from the very beginning of the construction process. If this is not taken into account, it can lead to faulty step configurations, especially when the thickness of the screed and floor layers between the two levels is not considered.
The lightweight steel frame (LSF) staircases that we produce can be installed at almost any stage of construction – with minor adjustments – and can take any shape proposed in the project, from straight-ramp stairs to balanced steps, spiral staircases, or combined ramps, etc.
FRAME STRUCTURE
Due to the use of C/U profiles with a thickness of 1.5 mm, the final result is practically indistinguishable from a reinforced concrete staircase.
The steps can be designed in two ways:
– Using 300 mm C profiles with lateral stringers made of 1.5 mm thick sheet metal, with or without risers.
– Using 60 mm or 75 mm profiles, with steps attached to adjacent structural elements (either reinforced concrete and/or masonry structures, wooden structures, or, of course, LSF – light steel frame).
The risers are made from the same materials used for cladding.
DIMENSIONS
Practically, there are no structural limitations other than those specified by regulations and standards!
Project modeling – staircase with balanced steps
STAIRCASE CLADDING
The cladding can be done using OSB, MgO boards, or cement-based panels, preferably on all sides, to facilitate the placement of insulation inside as well as the attachment of finishes. For staircases without risers, all metal elements can be painted in the colors chosen by the designer to ensure a visually cohesive appearance.
ISOLATION
After cladding, cellulose fiber, glass wool, or basalt wool can be added to fill the gaps as efficiently as possible.
Insulation is necessary to prevent a drum-like sound effect, especially for staircases with steps and risers. In the case of staircases without risers, insulation is no longer required—except possibly for the intermediate landing.
WARNING! These staircases do not creak!
FINISHING
As a general rule, all types of finishes can be used for steps, risers, and handrails. The installation requirements for certain types of finishes may influence the installation stages, but without significantly impacting the overall staircase assembly.
The design of the staircases, like the entire LSF metal structure, may take longer due to the very small tolerances required for installation.
WARNING! The execution time from production to installation and finishing is very short.
