Scaffolding is more than just a temporary structure—it’s a critical component of safe and efficient construction. Whether you’re working on a high-rise, a bridge, or a restoration project, the right scaffold design ensures stability, compliance, and worker safety. But when do you actually need a scaffolding designer? And what scaffolds require professional engineering? Let’s break it down.
Who is Responsible for Designing a Scaffold?
Scaffold design responsibility falls on a few key players, but ultimately, the complexity and size of the structure dictates who takes charge. In straightforward cases, a competent person—someone with the knowledge to assess and assemble basic scaffolding—may be able to handle the design. However, for more complex or load-bearing structures, a licensed scaffold engineer is required to create a safe, compliant design.
General contractors and project managers must ensure that any scaffolding used meets OSHA, ANSI, and local building codes. If a scaffold exceeds 125 feet in height, an engineer must step in to provide stamped drawings.. Without a proper design, a scaffold could become unstable, leading to costly delays—or worse, accidents.
What Scaffolds Require A Design?
Not all scaffolds require an engineered design, but many do. The general rule is that if a scaffold goes beyond standard configurations, supports extreme loads, or involves unusual site conditions, it must be designed by a qualified professional. In most cases, this means you’ll need a specialized structural engineer: a scaffold designer.
For example, suspended scaffolds, cantilevered platforms, and scaffolds exceeding 125 feet in height almost always need a detailed engineering plan. The same applies to scaffolding used on historic facades, irregular structures, or in high-wind zones. If your project involves these complexities, bringing in a scaffold designer from the start is crucial to avoid compliance issues down the line.
Types of Scaffolding Designs
Scaffolding isn’t one-size-fits-all. Different projects require different solutions, and choosing the right design is essential for safety and efficiency. Here’s a look at the most common types.
Structural Shoring
Structural shoring is used to support existing buildings or infrastructure during renovations, demolitions, or emergency stabilizations. This could involve reinforcing weakened floors, propping up aging facades, or holding a structure in place while new supports are installed.
Given the high stakes of structural shoring, professional design is a must. Engineers assess load distribution, material strength, and anchoring methods to ensure stability throughout the project.
A great visual example of structural shoring is this emergency scaffold design for a parking garage, put together when one of the load-bearing beams in the structure began to fail at a shopping mall.
System Scaffolding
System scaffolding, also called modular scaffolding, is a highly versatile option used in complex projects. It consists of prefabricated components that lock together, making it adaptable to different structures and loads. This type of scaffolding is commonly used in industrial settings, bridge construction, and high-rise buildings.
Because system scaffolding can be configured in countless ways, an engineered design is often necessary. Load calculations, anchor points, and site conditions must all be factored in to ensure stability and safety.
Frame and Brace Scaffolding
Frame and brace scaffolding is one of the most recognizable types, often seen on smaller commercial and residential construction sites. It features welded frames connected by cross braces, making it quick to assemble and dismantle.
While many frame scaffolds don’t require engineering, those supporting heavy loads or reaching significant heights may need a design plan. If your scaffold extends beyond OSHA’s threshold heights or will be supporting masonry work, an engineer’s input is essential.
Legal Requirements For Scaffolding Design
Scaffolding isn’t just about convenience—it’s about compliance. OSHA regulations, ANSI standards, and local building codes dictate when and how scaffolds must be designed. Ignoring these requirements can result in fines, shutdowns, or worse, serious accidents.
In general, any scaffold over 125 feet high, supporting extreme loads, or with non-standard configurations must have an engineer’s seal. Additionally, certain jurisdictions have their own height and load thresholds for requiring engineered scaffolds. Always check local regulations before setting up a scaffold to avoid compliance pitfalls.
Choose Scaffold Engineering Inc. For Your Next Project
At Scaffold Engineering Inc., we specialize in scaffold and shoring design tailored to your project’s unique needs. Whether you need a simple frame scaffold or a complex structural shoring system, our engineers ensure that your design meets safety standards and regulatory requirements.
Don’t leave your project to chance—work with experts who understand scaffold engineering inside and out. Contact us today to discuss your next scaffolding or shoring project, and let’s build something safe and efficient together!
