Three-Quarter Turn Straight Stairs
Three-Quarter Turn Stairs change their directions through 270° by the time the stair reaches the next floor. The direction is changed three times through three right angles, with the upper flight crossing the bottom one. In this type of construction, an open well is formed. This type of stair is normally used when a space has a greater vertical distance but a limited length. Some flights have very few risers, and the landings can provide a place to stop and rest during ascension.
Three-Quarter Turn Stairs change their directions through 270° by the time the stair reaches the next floor. The direction is changed three times through three right angles, with the upper flight crossing the bottom one. In this type of construction, an open well is formed. This type of stair is normally used when a space has a greater vertical distance but a limited length. Some flights have very few risers, and the landings can provide a place to stop and rest during ascension.