Rectangular stairs are laid out in a square so that they are alternatively parallel and perpendicular to the wall.
In between two flights, a landing is placed at each corner of the square.
Each story has one access landing, three intermediate landings, and four flights.
These evacuation stairs are installed with its own base structure also made from high end aluminum.
Our Aluminum Exterior Stairs
For high stairs their are some anchors to the wall for more stability side ways.
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