: Uses baseplates (e.g., 300x320x12mm) secured with anchor bolts (like M20 Grade 8.8) and full penetration butt welds. Landing/Top Beam
While DWG is the industry standard for 2D shop drawings, the AEC industry is moving toward BIM (Building Information Modeling). When you create your double stringer detail:
Use standard ANSI hatch patterns for cross-sections (e.g., ANSI31 for steel components, AR-CONC for concrete slabs).
Max 7 inches (commercial) or 7.75 inches (residential).
To read a detail like an expert, you need to move beyond looking at lines and start interpreting the construction logic. Let's walk through a typical detail drawing using a steel stringer as an example, as it clearly demonstrates key connection points.
If open risers are used, the opening between treads must be less than 4 inches to prevent small children from slipping through. 6. Best Practices for CAD Layering and Organization
The stringers remain solid rectangular shapes with straight, parallel top and bottom edges. The treads are slotted into routing lines on the inside faces of the stringers, or welded between them. This creates a highly secure, framed aesthetic. Under-Slung (Mono-Inspired) Double Stringer
The weight is distributed evenly between the two stringers, allowing for wider stairs without a central support.
Here's a simple example of a double stringer staircase detail in DWG:
Explicitly call out weld types (e.g., fillet welds with size symbols) and material grades (e.g., ASTM A36 Steel). 5. Conclusion
Commonly specified as structural steel shapes like MC 10x22 or fabricated 1/2-inch thick steel plates.
: Showcases the pan depth, reinforcement mesh, and concrete pour lines.
Q: What is the minimum width for a double stringer staircase? A: The minimum width for a double stringer staircase is typically 36 inches, but can vary depending on the specific application and local building codes.
Quality drawings will include structural connections such as stringer to floor attachments, base fixings, and wall connection details. Multi-view drawings typically present plan views, sectional elevations, and handrail/balustrade assembly details all in one file.
Draw the details at full scale (1:1) in Model Space. Use Paper Space viewports to scale the details appropriately (typically 1-1/2" = 1'-0" or 3" = 1'-0" for structural connections).
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