Customized stairs

1) Drop ceiling

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In case of drop ceiling a grid is welded to the ladder with L metal bracket for installation to the only ground-bearing slab.
The ladder can’t be attached to the drop ceiling because the empty gap don’t support the entire weight of the ladder and person.
2-BIS
The L brackets are bigger than the opening, for this reason the ladder has to be installed before the drop ceiling.
In alternative drop ceiling has to be disinstalled ar modify to allow the ladder to be pulled up into the hole.
Once the ladder is installed the drop ceiling will be mounted leaning against the ladder’s frame.
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2) Load bearing special slab

In case of ceiling’s thickness above standard 28cm the ladder features a metal grid equal to the space between floors.
Installation will be same as standard ladders, pulling up into the opening.
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3) Focus special slab

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In case of ceiling’s slab above standard 28cm the ladder always fetures a metal grid which covers the gap between floors.
In order to easily walk into this empty space an inclined extension ladder is welded to the grid.
The number of treads is based on rise, 30cm (e.g. 90cm thickness – 3 rises – 2 treads)
For safety the treads are welded on inclined rails.
The inclined rails will occupy lenght’s space (y) shortening (x) the total lenghts (x+y).
This because for each extra tread the lenghts is 10cm shorter.
Practical example
Total slab’s thickness: 90cm
Existing opening: 100×70
Rises: n.3
Extra treads: 2 (lenghts 20cm shorter)
Usable opening: 80×70

The ladder’s style isbased on the usable lenghts.

 

4) Focus ceiling flush to the wall

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Installation of a ladder always requires at least 3cm space all around the 4 sides of the underneath opening.
Ceiling flush to the wall means there is no slab between ceiling and wall so no 3cm space for the ladder’s installation.
In this case the opening will be modify with a spacer that will recreate 3cm space underneath.
Consequently lenghts or width will be 3cm shorter.

ACI TRE 200x100x5m
ACI TRE 180x70x4.3m
ACI QUATTRO 130x70x3.7m
ACI TRE gradino larghezza 70cm
LARGHEZZA 60cm - gradino 25cmx10cm
Scala soppalco personalizzata
ACI TRE 100x50x270
INSTALLAZIONE SOTTO CUPOLA COIBENTATA
GRADINO SPECIALE: 24CM EST - 18CM PEDATA UTILE
SCALA STANDARD ACI TRE E QUATTRO VERNICIATA BIANCA "VERSIONE ELEGANT"