Ladder stairs - slope and angle


If a staircase is steeper than 45 degrees at an angle, then it is spoken by a ladder staircase. As the only staircase in a house, the ladder stairs must not be used. Often the ladder staircase is also known as a steep staircase or samba stairs. What names this stairs still has and what you should pay attention to a ladder stairs, is here.

Spartreppe or ladder stairs

In a staircase with offset steps is often spoken by a samba staircase or a wading staircase. However, a ladder stair actually refers to a ladder with two spars, which has wide gullets instead of sprouts, similar to a step.

stair width

A ladder staircase should have a handrail on both sides. Therefore, the ladder stair should usually not be wider than 50 to 70 centimeters, so that the handrails can be taken safely.

Gradient of ladder stairs

The ladder stairs actually have a wide range of different gradients. All stairways between 45 and 75 degrees are placed at the ladder stairs, even if the stairs in question are not in the slightest resemblance to a ladder.

Safety of ladder stairs

In any case, a ladder staircase is intended only as a substitute for a movable attic ladder or a step ladder and allowed by the building authorities. But even then it is not optimal for security reasons. If the stairs have to be used by other people, you should leave this staircase alone for reasons of liability.

Spiral or spiral staircase

Just doctors warn in front of a ladder, especially if this has the offset steps of a samba staircase. Hardly more space takes a spiral staircase and a spiral staircase may not be as wide as expected. So it makes more sense to build such a staircase instead of a ladder staircase.

Disadvantages of the steep ladder stairs

  • high accident risk
  • very steep
  • only allowed as a second staircase

Tips & Tricks

However, if you really want to install a ladder staircase, do not buy the cheap models offered by flying dealers in pedestrian areas and fairs. You should rather commission a local craftsman with the construction, because you can reach it later also in case of problems with the stairs.
Ladder stairs - slope and angle

FAQ - 💬

❓ How do you calculate rise and run angle for stairs?

👉 0:443:03How To Calculate Angle of Stairway With Scientific CalculatorStart of suggested clipEnd of suggested clipLet's go ahead and take the rise of the stairway. Seven inches and divide it by the width or lengthMoreLet's go ahead and take the rise of the stairway. Seven inches and divide it by the width or length of the step ten inches and then push the equal sign we end up with 0.7.

❓ How do I find the correct angle for my stairs?

👉 1:522:54Stair Pitch: How To Find Stair AngleStart of suggested clipEnd of suggested clipAnd to do that. I'm gonna take a two foot level that's two foot Stanley. Level. And my Swanson speedMoreAnd to do that. I'm gonna take a two foot level that's two foot Stanley. Level. And my Swanson speed square. And I'm just going to set the pivot of my speed square at a high point on my straight edge.

👉 For most standard stairs, the stair angle varies between 30 degrees and 45 degrees. Egress stairs have a shallower angle around 30-35 degrees while industrial stairs have steeper angles ranging from 40 to 70 degrees. Why is the angle of a stair slope important?

❓ What is the angle of a step ladder?

👉 The preferred angle for such ladders is 75 degrees if practicable, with intermediate landing platforms if the height exceeds specific parameters. Cages are also required under certain conditions, to rest against during access and egress. Two factors make step-type ladders safer than rung-type ladders: stability and balance.

❓ How steep are ship ladders?

👉 Ships ladders are steep angled stair devices with angles between 50 and 70 degrees. This is much steeper than the typical angle of stairs of 45 degrees per OSHA and 30-32 degrees per IBC. Because they are so steep, ships ladders have much less usable tread depth than a standard OSHA or IBC stair design. What are ship ladders?

❓ Can you use a ladder on an uneven stair?

👉 Remember, the ladder should always be placed at an angle of 75 degrees even when on a sloped base, and follow the ladder angle rule. It is always preferable that one uses a ladder on level ground for purposes of safety. However, at one point or another, one will need to use a ladder on an uneven staircase.


Video Board: Staircase Angle