Offset from far wall
Moves the stairwell opening along wall Y. Used when the opening is not in a room corner.
01 /Purpose
Move the stairwell opening along wall Y.
This is required when the opening is not in a room corner.
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Distance perpendicular to the movement direction, between the structures bounding the passage. Total and clear widths are distinguished.
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Vertical size of the horizontal part you step on. Affects strength, freedom from squeaks, and precise step-height calculation.
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How far the horizontal tread overhangs the riser or frame. The «nose» visible from the side.