1. Arched vs. Triangular Roof Design: A Comparative Analysis

The initial design phase involved a detailed comparison of two roof structures: an arched (circular) roof and a triangular (gable) roof.

A. Arched (Circular) Roof – Advantages and Disadvantages

Advantages:

Optimized Structural Load Distribution: Arched roofs, particularly for large spans, excel at distributing load more evenly across the structure, minimizing stress concentration and enhancing overall stability and wind resistance. Natural Drainage: The curvature facilitates natural rainwater and snow runoff, reducing the risk of pooling and potential damage. Aesthetically Pleasing: Arched roofs often provide a more modern and visually appealing appearance. Space Utilization: The open interior space of an arched roof allows for maximized clear span, reducing the need for supporting columns.

Disadvantages:

Complex Construction: Arched roof construction demands specialized teams, equipment, and expertise, potentially extending project timelines. Higher Cost: Due to the complexity of construction and potentially increased material usage, arched roofs typically carry a higher price tag. Maintenance: Curved surfaces may require more specialized and frequent maintenance, such as cleaning and corrosion prevention.

B. Triangular (Gable) Roof – Advantages and Disadvantages

Advantages:

Simplified Construction: Triangular roofs are relatively simple to construct, employing standard techniques, which shortens project timelines. Lower Cost: Simpler construction and reduced material requirements typically result in lower construction costs. Easy Maintenance: The straightforward structure simplifies maintenance procedures. Conventional Aesthetic: While not as striking as an arch, a triangular roof offers a familiar and widely accepted appearance.

Disadvantages:

Less Efficient Load Distribution: Triangular roofs can experience stress concentration, especially with large spans, potentially impacting structural stability. Potential Drainage Issues: Improper slope design can lead to poor drainage and water accumulation. Limited Space Utilization: The internal space is often constrained, potentially necessitating supporting columns. Initially, the team favored an arched roof for its superior space utilization and structural stability, offering enhanced resistance to both wind and snow. However, the construction team raised concerns about the increased complexity and cost. Given the warehouse's location within an industrial park surrounded by similar structures and a relatively low-wind environment, the client opted for a triangular roof to balance cost-effectiveness and construction feasibility. This decision prompted the creation of 3D models, renderings, animation sequences, and CAD drawings (plan and section views) to visualize the final design.

2. Warehouse Dimensions & Structural Data

Overall Dimensions: 20 meters wide x 30 meters long Column Spacing: Initially designed with a 6-meter column spacing, this was adjusted to 3 meters to reduce the size of the supporting beams. Column Height: 5 meters Truss Spacing: 1.2 meters

3. Material Specifications (Steel Structure)

Columns: 100mm x 100mm square hollow sections (SHS) Triangular Truss Members: Top chord: 40mm x 60mm SHS; Bottom chord: 40mm x 80mm SHS; Web members: 40mm x 60mm SHS; Diagonal bracing: 40mm x 40mm SHS. Roof Trusses: 40mm x 60mm SHS Structural Design: Single column configuration was adopted due to the mild wind conditions in the surrounding area.

4. Construction Sequence

The construction process followed these key steps: Review of the 3D renderings, shop drawings, and construction animation. Procurement of steel materials. Foundation construction. Welding of column structures. Welding of triangular truss structures. Welding of wall and roof purlins. Rust prevention treatment. Installation of metal roofing panels.

I am available to answer questions related to the design of outdoor steel structures. I have ten years of experience in outdoor architectural steel structure design. Please note: My expertise is limited to outdoor steel structures; I do not provide advice on interior design or finishes.

Previous article：Modern Rose Cultivation Greenhouse in Houston, Texas