Uncover the Advantages of Legacy’s Tension Fabric Buildings

Types of Fabric Structures

When considering a fabric building instead of a regular metal one, it is important to understand the various options available and how they perform for both temporary and permanent use. There are:

• Single-Tube Structures: These are simple and affordable buildings with a single tube frame clad with a single fabric cover. They are suitable for temporary shelters or small storage space, and their light weight and minimal components make them quick to assemble and disassemble, saving time and labor compared to traditional steel structures.
• Air-Supported Buildings: These structures rely solely on a mechanical fan system to remain erect, as they lack a frame. Air-supported buildings are ideal for temporary applications where a large, unobstructed space is needed and are commonly used in the sports and recreation industry. Because air-supported buildings are not engineered to withstand heavy snow loads, high winds, or fluctuating climates, they are best suited for short-term or seasonal use where ease of disassembly and relocation is a priority.
• Relocatable Tents: These are portable fabric buildings with a frame that can be dismantled and reassembled at a new location. They are commonly used for events, disasters, or as rapid deployment shelters in the military. Their modular design and lighter components significantly reduce installation crews and construction schedules compared to conventional steel buildings, making them highly cost-effective for short-term or changing operations.
• Tensile Fabric Structures: In tensile fabric structure construction, the membrane serves as part of the structural support for the building. While tension and tensiles are often used interchangeably, they actually represent two different types of structures. A tensile fabric structure is commonly used as a shade structure, canopy, or pavilion where architectural form and efficient material use are important.
• Tension Fabric Structures: These structures are constructed of fabric cladding stretched over a rigid frame, and are commonly used for potash storage, bulk material storage, and industrial facilities. Due to building codes, the fabric cladding in a tension fabric structure is not included in the calculation to provide support. More recent entrants to the industry utilize rigid steel beams, like a traditional building, and can stand on their own without depending on fabric cladding. A rigid-frame tension fabric structure offers distinct advantages and is very versatile in its uses, delivering the strength of steel with the speed and efficiency of fabric tension structures.

Why Use a Fabric Building Instead of a Regular Metal One?

Fabric offers numerous advantages over traditional construction materials. White fabric allows in natural light, reducing daytime lighting costs and improving interior visibility. Fabric can also enhance acoustics and offer better climate control. Unlike metal sheets, which transfer outside elements and cause temperature fluctuations, fabric is thermally non-conductive, providing warmer winters and cooler summers. Its non-conductive properties also reduce condensation, improving comfort and protecting stored assets.

Tension fabric buildings and other fabric tension structures boast longevity and weather-tightness, with minimal maintenance due to their continuous membrane. Compared to conventional steel buildings that require more heavy equipment, larger crews, and longer schedules, these systems can be installed in one-third of the time compared to traditional construction. The quicker assembly of a tension fabric structure reduces labor hours, shortens project timelines, and lowers overall construction costs, delivering a faster return on investment.

Affordable Options, Accessories, and Benefits

Legacy’s portfolio includes a range of affordable tension fabric buildings, fabric tension structures, and tension fabric structure designs that can be tailored to your budget. Options include different frame systems, cladding choices, and foundation solutions, along with accessories such as doors, ventilation, insulation, lighting, and mechanical systems to match the performance of traditional metal buildings—often at a lower total installed cost.

Whether you need a permanent facility or a temporary structure that can be easily disassembled and relocated, these versatile tensile fabric structures and fabric tension structures deliver faster construction, reduced labor costs, and superior interior environments compared to many conventional steel alternatives.

Fabric Options: PVC vs. PE

When it comes to tension fabric structures, there are two main types of fabric: polyvinyl chloride (PVC) and polyethylene (PE). Both are robust and durable when properly tensioned.

PVC fabric stands out for its exceptional durability, lasting up to 30 years. With a weight of 20-28 ounces per square yard, it offers superior tear strength, making it ideal for harsh conditions. Additionally, PVC is naturally flame-retardant, crucial for occupied buildings. On the other hand, PE fabric is lighter, weighing 12 to 15 ounces, with a lifespan of 10 to 15 years.

Legacy Building Solutions offers ExxoTec^TM, an exclusive PVC fabric renowned for its strength and performance. Independent studies confirm its superiority over other PE fabrics, retaining 91% of its strength after 13 years of exposure. 

We provide two options: the 28 oz. ExxoTec™ Elite, twice as strong as PE fabric with a 25-year warranty, and the 19 oz. ExxoTec™ Pro, 41% stronger than 12 oz. PE fabric with a 20-year warranty.

ExxoTec™'s strength and corrosion-resistant properties make it ideal for any environment, from corrosive storage to occupied buildings and tough job sites. When paired with Legacy's attachment system, it withstands daily rigors extremely well. Our skid loader test, along with independent laboratory tests, demonstrates its durability, showing no damage even under a 10,000-pound skid loader.

Frame Options: Rigid I-Beam vs. Web Truss Systems

There are two main types of framing systems used in fabric buildings, rigid I-beam frames and web truss systems. Open web truss systems boast a modular design, enabling efficient production in larger quantities and potentially lowering costs. However, this mass production may restrict customization, capacity, and longevity. Their rounded shape can complicate adding openings along curved walls, often requiring additional engineering efforts for customization.

While open web trusses maximize tubular steel member strength and durability, they have limitations in supporting hanging loads. Structural failures like "chord plastification" can occur, where a thin steel web penetrates the supporting cord, risking instability. Moreover, the hollow frame pieces connected solely by welded steel cords are susceptible to internal corrosion in harsh environments.

Rigid steel I-beam frames offer a robust alternative to open web trusses, bringing proven strength and engineering certainty to fabric buildings. Unlike hollow tubes or web trusses, solid steel I-beams ensure enhanced durability against wind, snow, and seismic conditions, having been refined over decades in pre-engineered metal buildings.

By adopting rigid I-beam frames, fabric structures adhere to global engineering standards, meeting local and international building codes. These structures provide complete customization, tailored to both regulatory requirements and operational needs. Their design flexibility allows precise engineering for collateral loads, ensuring every inch of the building serves its purpose effectively.

However, customized rigid steel frames aren't off-the-shelf solutions; each project requires meticulous design, procurement, and coordination. Yet, this approach facilitates quicker installation upon arrival on-site. Additionally, rigid steel frames support various frame finishes, extending the building's lifespan and resilience against interior corrosion compared to tubular frames.

Frame Finish Options: EpoxxiShield^TM

Legacy Building Solutions offers EpoxxiShield™, an industry-leading corrosion protection system for steel building frames. Unlike hot-dip galvanizing (HDG), which simply slows rust, EpoxxiShield™ utilizes a multi-coat epoxy paint that creates a powerful barrier, extending the life of your building.

Unmatched Durability

Our EpoxxiShield™ COR package is the ultimate defense against corrosion, all purlins and tubes are sealed, and then epoxy coated after production ensuring exceptional protection even in harsh environments.

Rigorous Testing

Legacy prioritizes building trust through rigorous testing. We partnered with PPG to conduct a 2,000-hour salt-fog chamber test, one of the most aggressive corrosion tests available. 

The results were clear, EpoxxiShield™ significantly outperformed hot-dip galvanizing, with minimal to no corrosion even on scratched surfaces.

The Benefits of EpoxxiShield™:

• Superior Barrier: Creates a continuous protective barrier against corrosion, unlike galvanizing which only slows the process.
• Long-Lasting Protection: Extends the lifespan of your building frame for years to come.
• Easy Repair: Damaged areas can be easily repaired unlike galvanized steel, which often requires complete replacement.

Monocover vs. Paneled Attachment System

Choosing the right fabric attachment system is crucial for your building's longevity. Here's a breakdown of two common options:

Monocover:

• Suitable for smaller buildings.
• Fabric sheet stretched across and laid overtop the frames, secured only at edges.
• Prone to wind uplift and fabric wear in exposed areas.
• Repairs require replacing the entire fabric cover.

Panelized:

• Independent fabric sections attached to each frame for superior security.
• Roof sections in tension above all framing, eliminating wear points. 
• Wind flows freely over the top without stressing the fabric.
• Damaged sections can be easily replaced, saving time and cost.

Panelized systems offer superior durability and ease of maintenance, making them the ideal choice for most fabric buildings.

Bolt Vs. Tek Screws

When considering fabric buildings, the method of attaching fabric extrusions is crucial. Typically, manufacturers use tek screws driven into the top cord or bolted box extrusions for attachment. Bolted box extrusions offer better support and are less susceptible to the tek screw failing due to over-torquing.

Tek screws are more susceptible to galvanic corrosion in corrosive environments than 1⁄2 inch bolts. 

Legacy Structure Features

When it comes to structural features, Legacy's rigid I-beam frame design offers a multitude of benefits:

• Freespan Space: Eliminate interior columns for flexible operations and efficient space utilization.
• Customizable Wall Enclosures: Design your building with fully open walls, large door openings, or partial enclosures to suit your needs.
• Hanging Load Support: Rigid frames can accommodate various hanging loads, from conveyors to mezzanines.
• Diverse Roof Options: Choose a roof design that matches existing structures, promotes operational efficiency, or provides specific clearances.
• Customizable Sidewalls & Doors: Create a building with straight walls, various openings, and a functional layout.
• Ventilation and Water Management: Legacy buildings seamlessly integrate ventilation systems and feature eave extensions for gutters and effective water management.

Legacy Building Solutions offers a superior alternative to traditional construction methods. With its diverse range of tension fabric structures, high-quality materials, and innovative features like EpoxxiShield™, Legacy ensures exceptional durability, unmatched customization, and a building that will serve you for years to come. Contact Legacy Building Solutions today to explore the possibilities and unlock the future of your building project.