Connection Design in PEB: Bolted, Welded, and Clip-on Solutions

When it comes to Pre-Engineered Buildings (PEB), connection design is a key factor that can make or break your structure’s strength, ease of assembly, and long-term durability. You’re mainly looking at three connection types: bolted, welded, and clip-on. Each has its own pros and practical uses—let’s break them down in a straightforward way.

Bolted ConnectionsThese are the workhorses of PEB design. Bolted joints use high-strength bolts to connect primary members like columns and rafters or to attach secondary framing like purlins and girts. The big advantage? Speed and simplicity. Bolted connections allow for quick onsite assembly, minimal welding skills required, and easier future dismantling or modifications. Plus, if you’ve ever had to deal with tight site conditions or weather delays, bolted connections offer a lot of flexibility.

Welded ConnectionsWelding offers a continuous bond and can provide exceptional strength for critical joints. It’s commonly used in fabrication shops where quality control is tight, especially for primary frames and heavy-duty splice connections. While welding ensures structural integrity, it can slow down onsite work because it requires skilled labor and proper safety measures. Also, welded joints don’t lend themselves easily to disassembly, so they’re mostly used where permanence is key.

Clip-on SystemsClip-on connections are a modern favorite for secondary framing like purlins and girts. They involve specially designed clips or brackets that snap or bolt onto the main frame without welding. These connections are fast to install, reduce labor costs, and simplify adjustments during construction. Clip-on systems also minimize damage to coatings on steel members, preserving corrosion resistance.

Choosing the right connection depends on your project’s schedule, site conditions, and long-term maintenance plans. For a thorough, practical understanding of these connection types and more, check out Bhadani’s “Design of PEB” online course. It’s packed with expert insights, step-by-step design tips, and real-world examples to help you build smarter and faster.