A sheet of glass falls four storeys and lands eighteen inches from a pedestrian. A scaffold platform shifts under a worker carrying block. These are not freak events. They are the predictable result of skipped inspections and unsecured loads, and Irish courts are seeing more of them every year.

The costs are not abstract. Civil settlements for serious fall injuries regularly run into six figures. Criminal prosecutions under the Safety, Health and Welfare at Work Act 2005 carry fines up to €3 million and potential imprisonment for directors. The Health and Safety Authority does not distinguish between a busy site and a neglected one. It looks at what was in place, what was documented, and what failed.

What the case files show, consistently, is not sophisticated failure. It is basic failure. Unsecured materials left at height. Scaffold erected without a handover certificate. No exclusion zones below active work. These are not edge cases. They are the pattern.

What Actually Causes Scaffold Collapses

The scaffold does not usually fail because the steel is bad. It fails because someone modified the structure without authority, removed a tie to get a concrete pump closer, or loaded a platform beyond its rated capacity without checking what that capacity was.

Three specific failures appear repeatedly in incident investigations.

Base plates on uncompacted ground. A scaffold sitting on soft fill or wet clay will settle unevenly. The load path changes. Bracing comes under tension it was never designed for. The whole structure shifts, sometimes slowly, sometimes not.

Missing or inadequate ties. Ties connect the scaffold to the building and resist horizontal movement. Removing one to allow access to a window or balcony is a common shortcut. The scaffold looks the same. The margin is gone.

Overloaded platforms. A standard scaffold bay is rated for a specific load, typically 2.0 kN per square metre for a general-purpose lift. Stack six courses of block on it and that rating is blown. Nobody puts a sign up. The next person to walk onto the platform does not know.

Platform collapses and roof falls follow a pattern that repeats because the industry keeps treating it as bad luck rather than predictable outcome.

The Falling Glass Problem

Glass is heavy, unforgiving, and invisible in its risk until it moves. A standard double-glazed unit in a commercial fit-out weighs upward of 50 kilograms. Stored vertically on an upper floor without proper restraint, it needs one person to knock it, one gust through an open face, one vibration from passing plant.

The specific failures in falling glass incidents tend to cluster around three points.

Improper storage orientation. Glass stored flat on a scaffold board, rather than in an A-frame or proper stillage, slides. It does not announce this. It just goes.

No edge protection below storage areas. The legal requirement for edge protection at every open edge above two metres is not optional, but sites routinely treat upper-floor openings as acceptable storage areas with no barrier below.

No exclusion zone below glazing operations. Lifting and installing glass panels at height without a ground-level exclusion zone is illegal under the Construction Regulations 2013. It happens on sites every week. The argument is always the same: we would have seen something coming.

You will not see it coming. Glass at terminal velocity covers four storeys in under two seconds.

What a Proper Inspection Regime Actually Looks Like

This is where most sites fail not on intent but on system. A proper scaffold inspection regime has four components, and all four need to function.

Pre-use checks. Every working day, before anyone goes up. Not a formal inspection, a visual. Is the decking complete? Are guard rails in place? Are there any obvious signs of movement or damage overnight? This takes five minutes and the person doing it needs to know what they are looking for.

Formal inspections every seven days. Under the Construction Regulations, a scaffold must be inspected by a competent person at intervals not exceeding seven days. The inspection must be recorded on a GA1 form or equivalent. The record must be kept on site. "Competent person" has a specific meaning here: someone with training, experience, and knowledge of the relevant standards. Not the ganger who is available.

Inspection after any event that could affect stability. High winds, adjacent excavation, any collision by plant, any modification to the structure. This is often the one that gets skipped because nobody wants to call a halt after a crane clips a standard.

Handover certificate before first use. The scaffold erector signs off that the structure is complete and fit for use. No certificate, no access. This is a legal requirement and a basic control. Sites that skip it are carrying undocumented risk.

Material Securing: The Five-Minute Job That Prevents Million-Euro Losses

Every material stored at height needs to be secured against displacement. This is not complicated.

Loose boards get stacked and weighted or clipped. Sheet materials get stored in racks designed for them. Offcuts get removed from the platform at the end of each shift. Tools do not sit on ledgers.

The specific requirement under the Construction Regulations is that no material, article, or equipment shall be placed or left on any place where it is likely to cause injury. The word "likely" is doing real work there. It does not mean certain. It means foreseeable.

Courts have interpreted this consistently. If a reasonable site manager would have foreseen the risk, the duty existed. If no controls were in place, the duty was breached.

The Inspection Record That Saves the Company

When an incident goes to court, the inspection record is the first thing looked at. Not because inspections are the whole answer, but because they demonstrate the system.

A site with weekly scaffold inspection records, signed handover certificates, documented risk assessments for glazing operations, and a method statement for material storage has an argument. Not immunity, an argument. The evidence shows a functioning system that failed despite reasonable precaution.

A site with no records, no certificates, and no documented controls has nothing. The prosecution writes its own narrative and it is usually accurate.

Construction falls keep happening for exactly this reason. The controls are known. The regulations are clear. The gap is between knowing and doing, and the only thing that closes that gap is a system with teeth: daily checks, weekly inspections, documented handovers, and someone with the authority to stop work when the system flags a problem.

The Turn

The sites that end up in court are rarely staffed by people who wanted someone to get hurt. They are staffed by people who were busy, behind programme, short on money, and convinced that the thing that had not happened yet would probably not happen today. That logic works right up until it does not.

The scaffold inspection takes thirty minutes. The court case takes three years.