Disclaimer: Free CAD details should always be reviewed and verified by a licensed structural engineer prior to construction or fabrication to ensure compliance with local building regulations and load-bearing requirements.
Always verify if the drawing is modeled 1:1 in model space.
A double stringer staircase utilizes two parallel structural members—typically made of steel channels, rectangular hollow sections (RHS), or engineered timber—positioned underneath or at the outer edges of the stair treads. Key Component Anatomy The primary load-bearing diagonal beams. double stringer staircase detail dwg free
The vertical gaps between treads. In modern double stringer designs, these are frequently left open to allow light filtration. Architectural and Engineering Advantages
: The connection to the finished floor or concrete slab, often via a base plate or kick plate. Tread & Riser Dimensions : Standard architectural drawings must include the exact tread depth riser height (e.g., 7" rise, 11" run) to ensure code compliance. Common Sources for Free .DWG Files Disclaimer: Free CAD details should always be reviewed
Comprehensive Guide to Double Stringer Staircase Detail DWG: Free CAD Resources and Design Tips
Crucial details for the stringer baseplate floor connection and the top floor support. Tread Support: Architectural and Engineering Advantages : The connection to
Double stringers provide a "balanced" structural system by placing supports closer to the outer edges of the treads, which minimizes the "bouncy" feeling often associated with mono-stringers. Wider Spans: This configuration is ideal for staircases wider than
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A stringer is the inclined structural backbone that supports the treads and risers. In a configuration, two stringers run parallel along the sides of the staircase—one on the left, one on the right.