RS1 Steel Truss Frame

1. Introduction

The RS1 truss frame is a lightweight steel roof frame system with a simple triangular truss structure. Its compact and lightweight design is suitable for roofs with small to medium spans (≤ 9m). This model is often applied to townhouses, single-story houses, and roofs with medium slopes using tiles or metal sheets.

2. Structure

• Main Rafters (Top chord – Bottom chord): High-strength galvanized steel C-sections with common sizes of C75×40×1.0–1.2mm.

• Diagonal Braces (Web members): C-section or rectangular hollow section galvanized steel, 0.75–1.0mm thickness.

• Secondary Purlin (battens/purlins): Omega or small C-section steel, spacing 0.6–1.0m.

• Connections: High-strength self-drilling screws or bolts, no on-site welding.

• Roofing Material: Color-coated metal sheets, insulated metal sheets, or clay/cement tiles.

3. Reference Technical Specifications

• Roof Span: 4 – 9m.

• Truss Height (rise): 1/5 – 1/6 of the span.

• Roof Slope: 15° – 25°.

• Design Load: ≥ 40–45kg/m².

• Steel Strength: G550 (550Mpa).

• Corrosion Resistance Coating: AZ100–AZ150 (aluminum-zinc) coating.

4. Advantages

• Lightweight, fast installation.

• High durability, good corrosion resistance.

• Suitable for townhouses and small to medium-sized residential buildings.

• Lower cost than larger frame systems (MS2, RS2, etc.).

5. Applications

• Residential houses, single-story houses.

• Metal sheet roofs, canopies.

• Townhouses with tiled roofs and medium spans.

• Roof renovation projects.