Category: 3. Stairs

They are provided when the direction of flight has to be changed by 90°. The change in direction can be effected either by introducing a landing at a quarter space or by providing a winder at the junctions.

These are stairs with no change of direction in any flight between two consecutive floors. Straight stairs can be: Run straight between destinations with a single flight.Run straight with a series of flights without changing direction.Parallel stairsAngle stairsScissor stairsStraight stairs may change direction at the middle landing. In the case of parallel stairs, the stairs…

Quarter turn stairsHalf turn stairsA three-quarter turn staircase. Spiral stairs Curved stairs Geometrical stairs Bifurcated stairs

It should have adequate lighting and adequate ventilationIt should have stairs of sufficient width to allow adequate access by persons due to excessive time or conditions. In general, the clear width for internal stairs should be at least 50 cm in one and two-family houses, 90 cm in hotels, motels, energy buildings and industrial buildings…

Flight: It is a series of steps without a platform or landing or a break in their direction.Tread: It is the upper horizontal part of a step on which the foot is placed when ascending or descending stairs.Step: This is the part of the staircase that involves walking and rising. It allows to ascend or…