| | [No title] (Site not responding. Last check: 2007-10-18) |
 | | The most well known failures in these categories are the Commonwealth Avenue collapse in Boston, the Bailey's Crossroads collapse in Virginia, and the Ronan Point explosion-collapse in London. |
 | | The Ronan Point failure resulted in the addition of an amendment to the British Building Regulations of 1970, later developing into BS Cp 110-1972, which made it mandatory in Britain for buildings of five or more stories to be designed for the possibility of progressive collapse. |
 | | The Ronan Point case stands as one of the few landmark failures that have had a sustained impact on structural thinking, an impact that affected even institutions that traditionally tend to resist change such as the ACI. |
| www.waltersforensic.com /civil/vol5-no2.htm (610 words) |