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Preventing Construction Collapses: A Practical Guide for Site Managers

Tuesday, 07 April 2026   (0 Comments)
Posted by: Ernest Roper

Introduction

Construction collapses remain a serious concern in South Africa's construction and civil industries. This article translates Prof Smallwood's research findings into practical, actionable advice for those working on reinforced concrete (RC) structures, support work and formwork. The goal is simple: help you prevent collapses on your sites.

 

Six key areas that prevent collapses

 

Area Why It Matters
Competencies Wrong people make fatal mistakes.
Design Errors kill - check temporary AND permanent design.
Registration Certified professionals meet minimum standards.
Risk assessments Find hazards before they find you.
Supervision Unsupervised work drifts from specs.
Quality management    Poor quality = weak structure


Practical actions that work

Before construction starts

  • Verify professional registrations (ECSA, SACPCMP).
  • Check municipal approval - collapses linked to skipping this.
  • Ensure temporary works are designed by a competent person.
  • Complete hazard identifications (HIRAs) for all activities.
  • Confirm contractor has H&S and quality systems.
  • Obtain Construction Work Permit where required.

During construction

  • Dedicated supervision for structural work.
  • Pre-pour inspections by competent people.
  • Test concrete strength before striking anything.
  • Inspect formwork components for damage.
  • Follow back-propping design exactly.


Critical inspection points

When  Check This
Before pour   Support work, reinforcing steel
During pour Movement, compaction
Back-propping     Layouts, loading, concrete strength
Before striking  Concrete strength, back-propping

 

Support work and formwork: Five must-dos

1. Quality systems for design AND construction.
2. Competent designers - temporary works need real engineering.
3. Inspections during erection, pouring, striking, back-propping.
4. Conformance - concrete strength, compaction, match design.
5. Back-propping - correct layouts, no guessing.

Bottom line

Conformance to requirements prevents collapses. But only if:

  • Requirements are sound.
  • People are competent.
  • Supervision ensures execution.

Five things you can do today

1. Check registrations of key people.
2. Review risk assessments - are they current?
3. Inspect support work condition and founding.
4. Verify concrete strength before striking.
5. Ask your team: "What could go wrong here?"

 

Quick Reference: Do's and Don'ts

 

Do Don't
Verify competence.   Assume people know what they are doing
Check temporary works design.      Leave workers unsupervised
Test concrete strength. Strike before testing.
Follow back-propping design. Guess the layout.
Use registered professionals. Use uncertified practitioners.


Remember: Planning without execution is useless. Execution without planning is dangerous.

Neil Enslin | Head: Occupational Health and Safety 

Source: Based on research with South African construction professionals (Smallwood, 2019)

 

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