Ronan Point Disaster
Group One
Adam Argue
Max Madden
Ronan Spillane
Caroline Conlon
John Gillen
Introduction
History
Mode of Failure
Prevention
The Future
History
Built to satisfy the housing crisis in PostWar England
80 ft by 60ft in area and 210 ft high
44 2-bedroom flats and 66 1-bedroomed
flats
5 flats on each floor totalling 110 flats
Built using Larson Nielsen method
Mode of Failure
At 5.45 am a minor gas explosion
Progressive collapse
Corner wall and floor sections collapsed
Modern Design proved to have a major
flaw
Lack of structural redundancy
Prevention
Poor inspection of the section joints in situ may
have been partly to blame
Design was not intended for large tower blocks
Larson Nielsen System built using pre-fab
panels bolted together and filled with mortar
Joints were found to have been filled with
newspaper and rubbish
Each floor was supported by the load bearing
walls directly beneath it
Outdated Building Codes
The Future
Reinforced with blast angles as part of the
reconstruction
New British Standard Structural Design Codes
for concrete intoduced
Local authorities were dissuaded from building
such tower blocks
Awareness of need of inspections and quality
workmanship
Awareness of progressive collapse
Demolition of the remaining Larsen – Nielson
system built towers