Edge Protection for Concrete Frames: Slab Grab vs Bolt-On Brackets

Introduction

When it comes to protecting workers from fall hazards on concrete frame construction projects, selecting the right edge protection system is crucial. Among the various solutions, two of the most common methods are slab grabs and bolt-on brackets. While both serve the same fundamental purpose—preventing falls from height—their designs, applications, and installation methods differ significantly. This article will break down the advantages and considerations of both systems, helping contractors and procurement teams make informed decisions based on site needs, project type, and safety regulations.

What is Edge Protection for Concrete Frames?

Slab Grab Systems: Design & Application

What is a Slab Grab?

A slab grab is a temporary edge protection system designed to clamp onto the edge of a concrete slab without the need for external brackets or penetration into the structure. The slab grab uses adjustable arms or clamps to securely hold the system in place. This system is typically used on cured concrete slabs.

Advantages of Slab Grabs:

Quick installation: No need for drilling or bolting into the concrete, making it fast to install.
Flexibility: Slab grabs can be used both horizontally and vertically, offering versatility on a range of construction sites. This allows them to be applied to different parts of a concrete structure, from slab edges to vertical walls or beams.
No surface damage: Since slab grabs don’t require penetrations into the concrete, they avoid potential damage to the surface, which is important for aesthetic or structural reasons.
Zero Drilling: Eliminates silica dust hazards and the need for vacuum extraction.

Bolt-On Bracket Systems: Design & Application

What is a Bolt-On Bracket?

A bolt-on bracket is a form of edge protection typically attached to the concrete structure using bolts or anchor points. These systems can be fixed along the edge of a concrete slab to provide a strong, stable barrier.

Advantages of Bolt-On Brackets:

Durability and strength: Bolt-on brackets are designed to provide a robust and stable edge protection solution, suitable for demanding environments.
Firm mechanical anchoring: Secure post mounting gives confidence in high‑traffic or crowded edge conditions.
Cost-Effective Hardware: The brackets are simple and inexpensive, offering strong value while still meeting necessary safety and compliance standards.

Considerations:

More complex installation: The need for bolting or anchoring can make installation more time-consuming compared to slab grabs.
Potential for damage: Since they require penetration into the concrete, there is a risk of damaging the surface, especially if the installation isn’t done carefully.

Slab Grab vs Bolt-On Bracket: Key Differences

Feature	Slab Grab	Bolt-On Bracket
Installation	Quick, no drilling or anchoring required	Requires bolting or anchoring into the concrete
Flexibility	Can be used horizontally and vertically, making it versatile	Fixed installation; best suited for stable edge applications
Cost	Generally higher due to complexity structure	Typically more affordable due to simplicity
Dust	Minimal dust generation as no drilling is required	Can create dust during installation due to drilling and bolting into concrete surfaces

How to Choose Between Them

Slab Grabs are ideal when speed and flexibility are key priorities, especially when installation time is limited, and versatility is required on various parts of the structure.

Bolt-On Brackets are better suited for the robustness needed for ongoing safety, particularly in high-traffic or high-risk environments.

Choose Slab Grab When:

You need a solution that works on horizontal edges and vertical upstands without separate bracket types.
You want to avoid penetrating the concrete surface.
You require flexibility in attachment orientation with minimal hardware changes.

Choose Bolt-on System When:

You prefer a mechanically anchored system with base plates fixed to slab surfaces.
The edge protection setup must integrate with other slab surface‑mounted safety systems.

Conclusion

Choosing the right edge protection system for a concrete frame depends on several factors, including the stage of construction, project complexity, and safety requirements. Slab grabs provide a fast, flexible solution for early-stage protection, while bolt-on brackets offer a more robust and stable solution for long-term safety. Understanding the strengths and limitations of each system allows contractors to make informed decisions that ensure worker safety and compliance throughout the build.

FAQ: Slab Grab vs Bolt-On Bracket

Q1: Can slab grabs be used on all types of concrete edges?

Yes, slab grabs can be used on most horizontal and vertical edges of concrete slabs, including upstands and walls. Their adjustable clamps provide flexibility for various slab thicknesses and edge types.

Q2: How do slab grabs improve safety compared to other edge protection systems?

Slab grabs eliminate the need for drilling or bolting into the concrete, thus reducing silica dust hazards and potential damage to the structure. This feature enhances worker safety during installation and ensures the concrete surface remains intact for aesthetic or structural integrity.

Q3: Are bolt-on brackets only used for new construction projects?

No, bolt-on brackets can be used on both new and existing slabs as they can be retrofit to older structures. They are often the preferred choice for projects that require long-term edge protection.

Q4: Is the installation of bolt-on brackets more difficult than slab grabs?

Yes, the installation of bolt-on brackets requires drilling into the concrete, which is more time-consuming compared to slab grabs that simply clamp onto the concrete edge. However, the added effort provides a more stable and durable solution for high-risk environments.

Q5: Can I use a combination of both systems on the same project?

Yes, depending on the project, both systems can be used together. Slab grabs can be installed on some edges, while bolt-on brackets may be used in areas where greater strength and long-term stability are required, especially in high-traffic or high-risk zones.

Q6: Are these systems compliant with international safety standards?

Yes, both slab grabs and bolt-on brackets meet global safety standards, including EN 13374 (Europe) and OSHA (U.S.). Both systems are designed to ensure worker safety and regulatory compliance on construction sites.