: The two parallel beams provide superior stability, often used when a staircase lacks wall support or must accommodate a wide span.
: If the staircase is a "switch-back" or L-shape, the DWG will detail the middle landing's support structure. Where to Find Free Double Stringer DWG Files
: Detailed drawings of the stringer's baseplate connection to the floor and its attachment to the top floor or middle landing beams. double stringer staircase detail dwg free
Several platforms offer free or low-cost CAD blocks and architectural details:
A professional CAD detail for a double stringer staircase typically includes several critical views and specifications: : The two parallel beams provide superior stability,
: Precise dimensions for the horizontal walking surface (tread) and the vertical height between them (riser).
: Depending on the design, stringers can be exposed for an "industrial" or "modern" look, or concealed to create a floating appearance where the center of the stair remains open. Several platforms offer free or low-cost CAD blocks
: Callouts for specific profiles, such as UPN steel profiles or heavy-duty timber joists.
concealed tread step double stringer steel staircase CAD - Arcat
A double stringer staircase features two structural members—known as stringers—positioned either underneath each side of the treads or on the outer edges.