ᐅ Staircase Length: What Is the Optimal Length for a Staircase?
Created on: 2 Nov 2017 15:23
C
Christian NW
We want a straight flight stair. But how long should it be to ensure it is comfortable and easy to use?
There is a height difference of 150 cm (59 inches) — the height of the rooms on the ground floor — plus the height of the ceiling construction that needs to be overcome.
What angle of inclination is generally considered comfortable for stairs?
Our planner has allocated 330 cm (130 inches) for the stair length.
What do you think about that?
There is a height difference of 150 cm (59 inches) — the height of the rooms on the ground floor — plus the height of the ceiling construction that needs to be overcome.
What angle of inclination is generally considered comfortable for stairs?
Our planner has allocated 330 cm (130 inches) for the stair length.
What do you think about that?
Christian NW schrieb:
My problem is that I don’t fully understand this. What do the numbers mean? You mentioned a stair length of 330 cm (130 inches). With 14 risers, dividing 330 cm (130 inches) by 13 treads gives a tread depth of 25.4 cm (10 inches). Using the recommended formula of twice the tread depth plus one riser height equals 63 cm (25 inches), this results in a riser height of 18.8 cm (7.4 inches). Multiplying 14 risers by 18.8 cm (7.4 inches) gives a total rise of 263.2 cm (104 inches). You said the ceiling height is 250 cm (98 inches), so the ceiling structure would need to be only 13.2 cm (5.2 inches) thick—including the floor above—which is impossible. For a more realistic floor-to-ceiling height of 280 cm (110 inches) with a more comfortable 16 risers, you’d get a riser height of 17.5 cm (6.9 inches) and a tread depth of 28 cm (11 inches), so 15 treads would total 420 cm (165 inches).
https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
250 cm (98 inches) plus 20 cm (8 inches) ceiling plus 18 cm (7 inches) structure = 288 cm (113 inches).
Divided by 16 equals 18.0 cm (7 inches) rise.
This matches a 27.0 cm (11 inches) tread depth.
Stair length 16 x 27 = 432 cm (170 inches), with the top step transitioning level into the upper floor finish, depending on how you want to do it.
Without the top step (16 - 1) x 27 = 405 cm (159 inches).
Divided by 16 equals 18.0 cm (7 inches) rise.
This matches a 27.0 cm (11 inches) tread depth.
Stair length 16 x 27 = 432 cm (170 inches), with the top step transitioning level into the upper floor finish, depending on how you want to do it.
Without the top step (16 - 1) x 27 = 405 cm (159 inches).