Storm-Shield Sectional Garage Door - High-Wind Rated: Technical Details, Specifications, Features and Entities

Overview

The B&D Storm-Shield High Wind Sectional Door is a premium, engineered sectional garage door system specifically designed to withstand high wind conditions and meet stringent building standards. It represents a comprehensive solution for residential and commercial applications requiring superior wind resistance and structural integrity.

Design Specifications

Dimensional Parameters

The Storm-Shield High Wind Sectional Door features the following maximum dimensions:

• Maximum Door Height: 3.415 meters
• Maximum Door Width: 5.5 meters
• Wind Classification: C2 (as specified in AS/NZS 4505:2012)

These dimensions establish the upper limits for door configurations while maintaining structural compliance with building assessment provisions.

Wind Design Criteria

The door is engineered for Region C with specific wind design parameters:

• Regional Wind Speed (VR): 66 m/s
• Terrain Category: 2 (with internal pressure coefficients Cpi = -0.5, +0.65)
• Regional Ultimate Wind Speed: 69.3 m/s

Ultimate Design Wind Pressure Ratings

The maximum design wind pressures vary based on door width:

For door widths less than 4m:

• Inward wind pressure: 2.92 kPa
• Outward wind pressure: -3.37 kPa

For door widths greater than 4m:

• Inward wind pressure: 2.92 kPa
• Outward wind pressure: -3.04 kPa

Structural Requirements

Installation substrate materials must meet minimum specifications:

• Steel abutment support posts: Minimum 300mm with stress grade of 250 MPa
• Block wall characteristic unconfined compressive strength (f'uc): 15 MPa minimum
• Core filling of blockwall (f'c): 15 MPa minimum
• Maximum catenary force: 18.5 kN per metre height of door for all spans up to 5.5m

Technical Components

Door Assembly Structure

The Storm-Shield Sectional Door comprises a complete integrated assembly with the following major components:

Primary Components:

• Door panels package
• Torsion bar (tube or solid)
• Panel reinforcing
• Spring anchor bracket
• Tension spring
• Top hanger and bottom hanger
• Wheel axles with trolley wheels
• Vertical and horizontal tracks
• Hinges and hinge links
• Hinge pins
• Cable drums and lifting cables
• Pulleys and suspension points
• Top track angle brackets
• Jamb spacers
• Side bearing brackets
• Horizontal brackets
• Polypropylene curves
• Shaft collars
• REO hook brackets
• Reinforcing end caps
• Washers

Door Panel Specifications

Panel Construction:

• Manufactured with precise dimensional requirements
• 24mm shorter than door opening height (12mm head overlap, 12mm space at bottom)
• Multiple stiles with internal bracing for wind resistance
• Roll-formed steel panel construction
• Hinges connecting adjacent panels

Overlap Requirements:

• Minimum 30mm or greater overlap on each side
• Extensions into structure when opening
• Wind-locked doors require additional overlap dependent on substrate conditions

Performance Characteristics

Balance and Support System

The door incorporates a sophisticated counterbalance system essential for safe operation:

• Spring tension system: Precisely calibrated for balanced door movement
• Cable adjustment capability: Enables fine-tuning of door operation
• Axle centering requirements: Critical for smooth torsion system performance
• Maximum effort specification: Not to exceed 200 Newtons during installation and maintenance

Wind Load Resistance

The door is engineered to resist sustained wind loads through:

• Reinforced panel construction with internal bracing
• Wind clips and tracklock mechanisms
• Reinforced guide systems
• Vertical braces for structural stability
• Panel battens and stile configurations
• Multi-point fastening systems

Installation and Compliance

Design Basis and Standards

The Storm-Shield High Wind Sectional Door design is based on:

• Report TS1026 Revision A: Cyclone Testing Station testing documentation
• AS/NZS 1170.2:2021: Structural Design Actions - Wind Actions
• AS/NZS 4505:2012: Garage Doors and Other Large Access Doors
• AS 4100:2020: Steel Structures
• Principles of Mechanics and advanced structural analysis
• Multiple complementary Australian Standards for materials and construction

Installation Guidelines

Pre-Installation Requirements:

• Mounting position: Behind the opening
• Surface condition: Flush and smooth with no protrusions
• Levelness requirement: Absolutely level position
• Floor requirement: Level or recessed to avoid gaps
• Headroom: Minimum spacing as specified in installation documentation

Substrate Fastening Specifications:

For high-wind applications, fastener selection is critical:

• Structural steel abutment posts: Hex head tek screws (14g-20tpi × 300mm centres)
• Core-filled reinforced blockwall: M8 flange head masonry screws (200mm centres) or M10 Ramset ankascrews (400mm centres)
• Cold-formed steel supports: Hex head tek screws with spacing determined by material thickness (125-250mm centres)

All fasteners require galvanized washers (0.19-0.22 O.D. galv washer).

Structural Certification

The door installation requires independent structural assessment:

• The structure to which the door is attached must be assessed and certified independently by a suitably qualified structural engineer
• Building design engineers must ensure site-specific design wind loadings do not exceed ultimate design wind pressure ratings
• Doors may be positioned at any location along building envelope, including local pressure zones (corners), provided calculated pressures do not exceed specifications

Design Limitations and Considerations

Site-Specific Parameters

Alternative design parameters may be adopted provided:

• Calculated site-specific ultimate design wind pressures do not exceed the specified ultimate design wind pressure ratings
• Local pressure factors are applied appropriately
• Building Importance Level 2 is maintained
• Annual probability of exceedance for wind is 1 in 500

Compliance Framework

The door is deemed to comply with building assessment provisions when:

• Installed in accordance with standard B&D Storm-Shield high wind sectional door manufacturing specifications
• Installed per standard B&D Storm-Shield high wind sectional door installation guidelines
• All components are in accordance with manufacturer specifications
• High wind fastening requirements are met as per certification drawings

Additional Features and Capabilities

Regional Applicability

The Storm-Shield High Wind Sectional Door is specifically designed and certified for:

• Wind Region C classifications
• Terrain Category 2 and 2.5 conditions
• Residential and commercial applications
• Class 1 and Class 10 buildings

Operational Characteristics

The door system features:

• Smooth, low-effort operation when properly balanced
• Precise opening and closing mechanics through counterbalance system
• Professional installation capability with specialized tools
• Maintenance accessibility for component inspection and adjustment

Engineering Documentation

The design specifications are documented in:

• Engineering Drawing Numbers 2422/S01F, 2422/S02F, and 2422/S03F: Produced by James Ellis & Associates Pty Ltd
• Drawing S01F: Elevation and notes for project 2422
• Design-Specification Certificates: Certifying compliance with building assessment provisions
• Multiple revision issues documenting design evolution and refinements

References

• [1] 165024_02-stormshield-installation-instructions.pdf
• [2] storm-shield-sectional-garage-door-certification-drawing-2422-rev-f-1.pdf
• [3] roll-a-door-s1-region-c-want-section-40.pdf
• [5] storm-shield-sectional-garage-door-section-40-310714.pdf
• [6] form15-compliance-design-certificate-region-c-2212-m-apr-2023.pdf