Double-sided straight staircase is a common form of stairs, which is characterized by symmetrical distribution of pedals on both sides (that is, “two-sided board”), and the overall structure is simple and stable, which is suitable for a variety of architectural scenes
1. Structural features
Bilateral symmetrical side plate stringer design: the stairs are arranged symmetrically on both sides of the pedals (usually two independent pedals), and the middle is connected by a vertical plate or handrail to form a stable triangular or rectangular frame.
Straight stairs form: vertical upward extension, no turn or arc, suitable for high height space.
Material combination:
Pedals: wood, stone, metal (such as tempered glass) or concrete.
Riser/handrail: wood, metal (stainless steel, wrought iron), glass or composite material.
2. Major advantage
High stability: bilateral symmetrical structure to disperse the load, bearing capacity is strong, suitable for families or public areas.
Convenient construction: Straight staircase structure is simple, no complicated calculation, suitable for standardized production or customization.
Various styles: Different decoration styles (modern, vintage, industrial, etc.) can be adapted through material matching (wood/metal/glass).
Good safety: Both sides of the pedal provide double support, reducing the risk of stepping out.
3. Design considerations
Step size: standard step height (15-18cm) and depth (25-30cm), ergonomic.
Handrail design: If the middle is an open space, it is necessary to install handrails (metal, wood or glass) to ensure safety.
Lighting and ventilation: High floors can be combined with glass pedals or top Windows to enhance the penetration of natural light.
Decorative details: Wood can be mortise and tenon splicing, and metal can be added to line carving to enhance aesthetics.