Part 1/4 – Safety: Working platform collapse caused by “estimated load”
INDUSVINA Safety series – for project managers and contractors who want to reduce preventable accidents through discipline and engineering.
1. Why safety cannot rely on “estimation”
In construction, some mistakes do not show consequences immediately – but in a single careless moment, one decision based on “estimation” instead of calculation can cost people’s lives, damage assets, destroy a contractor’s reputation and delay the whole project.
“Estimating the load” is still a common habit on many sites, driven by the mindset of work fast – get it done – trust personal experience instead of following proper engineering standards.
Safety is not a slogan on the wall. Safety is a system of calculation – control – supervision – measurement. A small error in load estimation is enough to trigger a chain of failures.
2. A typical scenario – “We thought it could take it”
Imagine on an industrial project, the crew stacks steel members and materials on a temporary working platform, with no calculation of allowable load:
- No structural calculation for the platform capacity.
- No supervisor in charge of load control, no warning sign about max load.
- No responsible person signs off before using the platform.
Result: after a few hours of loading, the platform starts to deflect – crack – fail – collapse, causing:
- Workers falling from dangerous heights.
- Damaged equipment and materials.
- Work stoppage for investigation and repair.
- The client questioning the contractor’s safety management capability.
In many such incidents, a common pattern emerges:
“No one is really accountable for loads – everyone trusts their feeling.”
A project worth tens or hundreds of billions of VND can be jeopardized by a decision to “estimate a few hundred kilos”.
3. Technical basis – Loads must be calculated
From an engineering point of view, all temporary and permanent structures must be designed and checked according to relevant standards. Typical references are:
| Item | Reference standard |
|---|---|
| Loads and actions | National load standard (e.g. TCVN 2737) |
| Occupational safety in construction | Safety codes (e.g. TCVN 5308) |
| Scaffolding & working platforms | Regulations and safety guidelines of authorities |
Key engineering principles:
- Dead load (materials placed on the platform).
- Live load / dynamic effects (workers moving, vibration, equipment).
- Safety factors for each component and connection.
- Material – configuration – connections – supports must all be checked.
Without a load calculation file, letting people work on a platform is similar to asking them to stand on a hidden trap.
At INDUSVINA:
- Every working platform has an approved load calculation.
- We keep design drawings and connection details on record.
- Materials and connections are inspected and accepted before use.
- A responsible person signs off before the platform is put into service.
No signature = No work. That is part of INDUSVINA’s discipline culture.
4. What happens when load is ignored?
A small mistake may lead to three major types of loss:
4.1. Human loss
- Falls, serious injuries, even fatalities.
- Psychological impact, loss of confidence among the workforce.
4.2. Financial loss
- Cost for repairing the structure, replacing materials and equipment.
- Compensation, insurance expenses, contract penalties.
- Delay in schedule and extended project overhead costs.
4.3. Reputation & legal risks
- Loss of trust from clients and partners.
- Risk of being suspended, investigated, or sanctioned.
- Being excluded from future bids due to poor safety record.
One accident can wipe out 5–10 years of brand building. A good contractor is not just the one who “works fast”, but the one who does not allow preventable accidents to happen.
5. Practical guidance – From “estimating” to “calculating”
5.1. Before starting work
- Request an approved load calculation for the platform/scaffolding.
- Check materials: steel members, planks, connections, supports, base.
- Define and record the maximum allowable load (kg/m²).
5.2. During execution
- Install clear load limit signs at platform access points.
- Limit the number of workers on the platform at any time.
- Supervise material loading and distribution to avoid local overloads.
- Assign a safety officer to perform regular checks during shifts.
5.3. After each stage
- Check deflection, deformation, bolts, welds, and connections.
- Prepare inspection and acceptance reports with signatures.
- Keep records for future investigation or continuous improvement.
6. INDUSVINA pre-use checklist for working platforms
| Checklist item | Tick |
|---|---|
| Load calculation for the platform/scaffolding is approved | ☐ |
| Platform deck, beams and connections are inspected | ☐ |
| Load limit and max number of workers are posted on site | ☐ |
| Material loading and distribution procedure is communicated | ☐ |
| Safety officer and supervisor are assigned for this platform | ☐ |
| Responsible person has signed off to allow use of platform | ☐ |
If all 6 boxes are not ticked → the platform must not be used.
7. Conclusion
Accidents do not happen because we do not know, but more often because we know but do not act.
Lessons from platform collapse incidents remind us:
“In project management, fatal outcomes often come not from giant risks, but from the habit of ignoring small issues.”
Changing the mindset from “estimating” to “calculating” is the first step to building a truly safe site culture.
At INDUSVINA, safety is not an option. Safety is a standard.
If you find this article helpful, share it with your colleagues and site teams. Every share is another chance to prevent an avoidable accident.
