Work Free — Double Stringer Staircase Detail Dwg

Clean, un-expired layers compatible with AutoCAD 2010 and newer versions.

Open the downloaded DWG in a separate window. Check the scale (typically drawn 1:1 in Model Space) and purge any unused blocks or layers ( PURGE command).

A has two inclined beams (stringers) supporting the treads and risers, usually with the treads visible from the sides. A free DWG detail would typically include:

: For double stringer stairs, the width is typically limited to 36 inches before a third (center) stringer is required to prevent sagging .

Dynamic blocks are ideal, allowing you to stretch the floor-to-floor height while maintaining uniform riser distribution. Modifying Free CAD Details for Production double stringer staircase detail dwg free

The stringers are the backbone of the staircase. In modern designs, they are typically fabricated from:

: Baseplate floor connections and top-floor main supporting beam attachments .

Connection method where the stair meets the floor. 2. Longitudinal Section

Before you commit to a design, take the time to verify the downloaded DWG against your local building codes and the specific load demands of your project. The ideal file will provide you with a precise, dimensionally accurate, and code-aware blueprint that will stand as the backbone of a safe and lasting structure. Clean, un-expired layers compatible with AutoCAD 2010 and

When downloading and implementing a DWG file, it is essential to verify that it meets local building codes. The following table summarizes general North American code standards:

Minimum of 10 inches (with nosing) or 11 inches (without nosing).

How the stringer anchors to the finished floor or concrete slab (e.g., embedded plates, expansion bolts).

Handrail and guardrail heights (typically 34–38 inches for handrails, 42 inches for commercial guards). C. Connection and Fabrication Details (Blow-ups) A has two inclined beams (stringers) supporting the

The interface with the lower floor. For concrete slab finishes, a concealed base plate is bolted into the concrete and later covered by the architectural flooring.

Your CAD callouts must reflect the realities of fabrication. Double stringer staircases rely heavily on precise material selection. Steel Specifications

| Parameter | Typical Requirement | | :--- | :--- | | | Minimum 36 inches clear | | Maximum Riser Height | 7.75 inches (197 mm) / 7 inches (NADRA/IRC) | | Minimum Tread Depth | 10 inches (254 mm) / 11 inches (NADRA/IRC) | | Guardrail Height | Minimum 36 inches (measured from tread nosing) | | Baluster Spacing | Must prevent passage of a 4-inch sphere |

To help you get started with your design, we've provided a free DWG download of a double stringer staircase detail. This file includes: