: Staircase Assembly – Steel or Reinforced Concrete Usage : Interior/Exterior (specify as required) Scale : 1:20 or 1:25 for detailing
A double stringer staircase detail is only useful if it adheres to relevant building codes, such as the International Building Code (IBC) for commercial projects or the International Residential Code (IRC) for homes. Ensure your DWG blocks reflect these standard limits: Technical Parameter Commercial (IBC) Standard Residential (IRC) Standard 7 inches (178 mm) 7.75 inches (196 mm) Minimum Tread Depth 11 inches (279 mm) 10 inches (254 mm) Minimum Stair Width 44 inches (36 inches if < 50 occupants) Guardrail Height 42 inches (1067 mm) 36 inches (914 mm) Maximum Open Riser Gap Less than 4 inches (102 mm) Less than 4 inches (102 mm) Best Practices for Organizing a DWG File
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Steel designs often use structural shapes like UPN channels , HSS tubes, or flat plates. double stringer staircase detail dwg
Treads cannot float freely between or atop stringers; they require carrier plates or angles. The DWG shows the exact thickness of these steel clips (often
Ensure all line types (dashed for hidden parts like anchor rods inside concrete) and line weights (thick lines for structural outlines, thin lines for dimensions) are controlled explicitly via rather than manual overrides. If you are currently setting up your CAD file, let me know:
The clear width between stringers (or handrails) must meet occupancy exit requirements—typically a minimum of for residential and for commercial projects. : Staircase Assembly – Steel or Reinforced Concrete
: Callouts for steel grades (e.g., A36 or A500) and welding specifications. Best Practices for Using DWG Stair Details
Steel is the most common material choice for double stringer designs due to its immense tensile strength and modern aesthetic. Components Standard Dimensions / Specs CAD Annotation Notes Channel (C-Channel) 10"–12" or RHS 8"x2"x1/4" Specify steel grade (e.g., ASTM A36 or A500). Tread Cleats 2" x 2" x 1/4" Steel Angles Note continuous welds along the contact profile. Base Plates 1/2" to 3/4" Thick Steel Plate Specify exact hole diameter for anchor bolts. Anchor Bolts 1/2" or 5/8" Wedge or Epoxy Anchors Include minimum embedment depth in concrete. 5. Building Code and Compliance Checklist
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(if outdoor): at mid-landing with 15 mm gap.
When setting up your layers and linework in a DWG file, you must first determine the structural profile of the stringers. The layout geometry significantly alters the detailing approach. A. Exposed Side Stringers (Closed Profile)
S-STAIR-ANNO : Text callouts, material specifications, and structural welding symbols.
Creating a detailed CAD drawing ensures that the stair fabricator understands the design intent. Below are the key views required: 1. Plan View (Top View) Show the width of the stairs, tread depth, and nosing. Clearly define the width and thickness of the stringers.
Detail the specialized aluminum shoe or point-fix stainless steel standoffs, complete with neoprene isolation gaskets.