Taser Policy and Operational Guidance - Specially Trained Units - December 2008 Version 4.doc

PSNI Operational Use of Taser: Notes for Guidance on Police Use

WTC Tenant Floor Space Utilisation 1.3

Updated version of the calculation model with the following changes:

• Removal of focus on Greening paper, column usage replaced by values which are constant.
• Inclusion of conservation of momentum energy loss for usage in subsequent deformation of materials.
• Specific floor heights used, rather than an averaged constant.
• Concrete crush scale maximum removed. Unlimited scale permitted.
• Manual concrete crush scale ramping parameters removed.
• Impact KE based concrete crush scale calculation added. Switchable.
• Floor-by-floor concrete crush volume percentage added.
• Floor-by-floor mass loss (kg) added. Switchable.
• Per floor Impact KE based mass loss calculation added. Switchable.
• Calculated mass switchable to include/exclude cap mass loss.
• Initial cap drop height modifier added.
• Average Debris Lateral Ejection Velocity included.
• Debris Lateral Ejection Energy Requirement Added. (Applied to mass lost)
• Concrete mass inside core uses floor-by floor specific area percentage modifier to account for variation in usable floor area.
• Graphs for tracking Kinetic Energy, Mass and Velocity.
  

WTC - Super Slow Motion

Animated graph of model masses against time.

Each frame represents an 0.5% increase in pile-driving mass loss per impact, post floor impact, with no resistance and no other energy conversions.

A simulation document eerily close in detail to the current swine flu epidemic.