Metropolitan Transit Authority Vulnerability Assessments

After the September 11, 2001, attacks, the Metropolitan Transit Authority (MTA) became concerned about the vulnerability of their world-renowned facilities to terrorist attack.

An explosion could potentially cause thousands of fatalities and have severe economic consequences for the New York City metropolitan area. Collateral economic effects could extend nationally and even internationally.

Hinman Consulting Engineers evaluated the size of explosive required to cause catastrophic collapse of 22 critical MTA facilities.

Hinman Consulting Engineers evaluated the size of explosive required to cause catastrophic collapse of 22 critical MTA facilities.

For each facility, the explosive threat types and critical structural components were identified based on visual site surveys and available drawings.

Threat types considered included weapons delivered by vehicle and by hand.  Using computer modeling, blast loads and structural response were evaluated.