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masonry

A load-bearing staircase frame built of bricks, rocks, or other hard pieces stacked and joined together.

A masonry staircase is a set of steps in a built object whose supporting framework is built of bricks, stones, concrete masonry units, clay pieces, adobe, or other mineral-based building units stacked in a tight-fitting arrangement and usually bonded together with mortar. Masonry staircases lack the tensile strength of other stairway materials, and are usually built low to the ground or in places where they do not need extensive structural support.

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