What Steel Framing Supplies Do You Need for a Strong Metal Building?
A strong metal building typically requires properly specified structural framing, such as beams, columns, C purlins, girts, square tubing, channels, bracing, connections, and fasteners. The exact steel framing supplies depend on the building’s size, design loads, intended use, and engineered plans. Using compatible, correctly sized components is essential for transferring loads safely through the structure.
At Infinity Building Supply, we know that a durable metal building starts with the right materials. Contractors, builders, farmers, property owners, and businesses need steel building supplies that match their plans and perform reliably once installed. Our product selection includes structural steel components, C purlins, square tubing, receiver channel, metal panels, custom trim, and other metal construction products for a wide variety of building projects. Just as important, we focus on helping customers identify the materials their projects require. Whether you are planning an agricultural building, workshop, commercial structure, storage facility, or another metal building, choosing the correct framing supplies from the beginning can help create a stronger, more efficient build.
Essential Structural Steel Components for Metal Buildings
Steel framing works as an interconnected structural system, which means every component needs to perform its intended job. Primary framing carries major structural loads, while secondary framing and connections help support roofing, siding, and loads imposed on the building.
The American Iron and Steel Institute (AISI) maintains standards covering structural members and connections in cold-formed steel construction. Its structural framing standards address applications that include walls, floor and roof systems, trusses, diaphragms, and other load-carrying components.
Understanding the role of each steel component can make ordering materials easier and reduce problems once construction begins.
What Are the Main Steel Framing Supplies You Need?
The exact material list varies by building, but most steel-framed structures depend on a combination of primary framing, secondary framing, bracing, connections, and exterior components.
Common steel building supplies include:
- Primary structural framing: Beams and columns create the building’s main load-bearing framework.
- C purlins: These horizontal framing members commonly support roof panels and transfer roof loads to the primary frame.
- Girts: Similar to purlins, girts typically run horizontally along walls and provide support for wall panels.
- Square tubing: Structural square tubing can be used for posts, supports, frames, bracing, and other applications specified by the building design.
- Receiver channel: Channels can serve various framing and connection purposes depending on the building system.
- Bracing: Properly designed bracing helps the structure resist lateral forces and maintain stability.
- Fasteners and connections: Bolts, screws, welds, clips, and other connections secure individual components into a complete structural system.
- Metal roofing and wall panels: These form the exterior roof and wall surfaces while transferring applicable loads to supporting framing.
No single list applies to every project. Always follow engineered building plans and applicable building codes when determining the size, spacing, gauge, grade, and connection requirements of structural steel components.
Why Are C Purlins Important in a Metal Building?
C purlins provide secondary roof framing that supports metal roofing and transfers loads to the building’s primary structural frame.
Their role may look simple, but correct selection and spacing are important. Purlin requirements can change based on factors such as roof span, design loads, building dimensions, material properties, and connection details.
The Steel Framing Industry Association’s technical resources illustrate why proper specification matters. Its technical guide includes information for floor and roof joist spans, section properties, loads, channels, fasteners, and other engineering considerations.
For builders, the practical takeaway is straightforward: do not choose C purlins based only on price or what worked on a previous building. Follow the project’s structural design so the purlin size, spacing, and connections are appropriate for the specific structure.
How Do You Choose the Right Square Tubing and Structural Steel?
Choose structural steel according to the building plans, expected loads, dimensions, material specifications, and intended application.
Square tubing for construction is versatile because its uniform shape makes it useful for many structural and fabrication applications. Depending on the engineered design, it may be used for:
- Posts and columns
- Frames
- Supports
- Bracing
- Gates and openings
- Equipment structures
- Custom fabricated components
Thickness, dimensions, steel grade, connection method, and loading conditions all affect whether a particular piece of tubing is appropriate.
The same principle applies to other heavy-duty steel framing materials. A stronger build is not created simply by using more steel. It comes from using the correct components in the correct locations according to a properly designed load path.
Why Do Fasteners, Connections, and Bracing Matter?
Connections and bracing are critical because framing members must work together as a structural system.
A high-quality beam, purlin, or piece of square tubing cannot perform as intended if the connection attaching it to the rest of the structure is inadequate. Depending on the design, connections can include bolts, screws, welds, clips, plates, anchors, and other hardware.
Bracing is equally important. Buildings must resist more than downward gravity loads. Wind and other lateral forces can place significant demands on walls, roofs, connections, and framing.
AISI structural framing standards address both members and connections in cold-formed steel applications. The Steel Framing Industry Association also emphasizes code compliance and correct installation, and its certification programs are designed to promote consistent quality in cold-formed steel framing products.
Always use the fastener type, quantity, spacing, and connection details specified in the building’s plans rather than substituting hardware based solely on availability.
What Should You Check Before Ordering Steel Framing Supplies?
Before placing an order, confirm your material list against the project’s drawings and specifications. A few minutes of preparation can help prevent delays, shortages, and incompatible components.
Review these key details:
- Building dimensions: Confirm width, length, wall height, roof configuration, and openings.
- Structural plans: Identify the required beams, columns, purlins, girts, tubing, channels, bracing, and connections.
- Material specifications: Verify dimensions, thicknesses, grades, coatings, and other specified properties.
- Quantity and spacing: Calculate quantities according to the engineered layout rather than estimates alone.
- Connections and fasteners: Make sure you have the appropriate hardware for each connection.
- Roof and wall materials: Coordinate framing with metal roofing supplies, wall panels, trim, and accessories.
- Building codes: Confirm that the materials and design comply with applicable requirements for your project.
The Steel Framing Industry Association’s current technical guide includes design information for cold-formed steel framing products and states that the guide meets requirements of the 2024 International Building Code. That reinforces the importance of selecting steel framing supplies based on current technical requirements rather than relying solely on past construction practices.
Frequently Asked Questions About Steel Framing Supplies
What type of steel is used for metal building framing?
The type depends on the building system and structural design. Metal buildings may incorporate structural steel shapes, cold-formed steel members, square or rectangular tubing, channels, purlins, girts, and other steel components specified for the project’s loads and intended use.
What is the difference between a purlin and a girt?
Purlins typically support the roof system, while girts provide secondary framing support along the building’s walls. Both transfer loads from exterior panels to other parts of the structural system.
How do I know what size C purlin I need?
C purlin size depends on factors including span, spacing, loads, material properties, and the overall structural design. Use the size specified by the building’s engineered plans rather than selecting a purlin based only on the building’s dimensions.
Can square tubing be used for structural framing?
Yes, square tubing can be used in many structural applications when it is properly specified for the loads and design. The required dimensions, wall thickness, grade, connections, and placement should follow the project’s engineering requirements.
Get the Right Steel Framing Supplies for Your Build
Strong metal buildings start with more than steel. They start with the right steel components working together as a complete system.
From C purlins and square tubing to receiver channel, structural metal products, metal panels, and custom trim, Infinity Building Supply provides quality metal building materials for projects of many sizes and applications. Our team is committed to helping customers find dependable supplies that match their project requirements.
Planning ahead, following engineered specifications, and choosing compatible components can help reduce construction problems while supporting the strength and longevity of your finished building.
Ready to get the steel framing supplies you need for a strong build? Contact Infinity Building Supply today to get started.