GSA Test Protocol GSA-TS01-2003
(January 1, 2003)

PERFORMANCE CONDITION GLAZING RESPONSE SYSTEM HAZARD PROTECTION CLASSIFICATION
1 Glazing does not break. No visible damage to glazing or frame. None Safe
2 Glazing cracks but is retained by the frame. Dusting or very small fragments near sill or on floor acceptable. None Very High
3a Glazing cracks. Fragments enter space and land on floor no further than 3.3 ft. from the window. Very Low High
3b Glazing cracks. Fragments enter space and land on floor no further than 10 ft. from the window. Low High
4 Glazing cracks. Fragments enter space and land on floor and impact a vertical witness panel at a distance of no more than 10 ft. from the window at a height no greater than 2 ft. above the floor. Medium Medium
5 Glazing cracks and window system fails catastrophically. Fragments enter space impacting a vertical witness panel at a distance of no more than 10 ft. from the window at a height greater than 2 ft. above the floor. High Low

UFC 4-010-01 (February 9, 2012)
Levels of Protection – New and Existing Buildings

Level of Protection Potential Building Damage/Performance 2 Potential Door and Glazing Hazards 3,4 Potential Injury
Below AT (Antiterrorism) standards 1 Severe damage. Progressive collapse likely. Space in and around damaged area will be unusable. Doors and windows fail catastrophically and result in lethal hazards. (High hazard rating) Majority of personnel in collapse region suffer fatalities. Potential fatalities in areas outside of collapsed area likely.
Very Low Heavy damage – Onset of structural collapse, but progressive collapse is unlikely. Space in and around damaged area will be unusable. *Glazing will fracture, come out of frame, and is likely to be propelled into the building, with potential to cause serious injuries. (Low hazard rating),
*Doors will be severely deformed but will not become a flying debris hazard. (Category IV)
Majority of personnel in damaged area suffer serious injuries with a potential for fatalities. Personnel in areas outside damaged area will experience moderate injuries.
Low Moderate damage – Building damage will not be economically repairable.
Progressive collapse will not occur. Space in and around damaged area will be unusable.
*Glazing will fracture, potentially come out of the frame, but at reduced velocity, does not present a significant injury hazard. (Very low hazard rating)
*Doors will experience non-catastrophic failure, but will have permanent deformation and will be inoperable. (Category III)
Majority of personnel in damaged area suffer minor to moderate injuries with the potential for a few serious injuries, but fatalities are unlikely. Personnel in areas outside damaged areas will potentially experience minor to moderate injuries.
Medium 5 Minor damage – Building damage will be economically repairable.
Space in and around damaged area can be used and will be fully functional after cleanup and repairs.
*Glazing will fracture, remain in the frame and results in a minimal hazard consisting of glass dust and slivers. (Minimal hazard rating)
*Doors will be operable but will have permanent deformation, (Category II)
Personnel in damaged area potentially suffer minor to moderate injuries, but fatalities are unlikely. Personnel in areas outside damaged areas will potentially experience superficial injuries.
High 5 Minimal damage.
No permanent deformations. The facility will be immediately operable.
*Glazing will not break. (No hazard rating)
*Doors will remain intact and show no permanent deformation. (Category 1)
Only superficial injuries are likely.
  1. This is not a level of protection and should never be a design goal. It only defines a realm of more sever structural response, and may provide useful information in some cases.
  2. For damage / performance descriptions for primary, secondary, and non-structural members, refer to PDC Technical report 06-08
  3. Glazing hazard levels are from ASTM F 1642.
  4. Door hazard levels are from ASTM F 2257.
  5. Beyond minimum standards.

Standoff Distances for New and Existing Buildings

Location Building Category Standoff Distances
Applicable Level of Protection Minimum Standoff Distance (1) Applicable Explosive Weight (2)
Controlled Perimeter or Parking and Roadways without a Controlled Perimeter Billeting and High Occupancy Family Housing Low 18 ft (5.5m) I
Primary Gathering Building Low 18 ft (5.5m) I
Inhabited Building Very Low 18 ft (5.5m) 3 I
Parking and Roadways within a Controlled Perimeter Billeting and High Occupancy Family Housing Low 12 ft (3.6m) II
Primary Gathering Building Low 12 ft (3.6m) II
Inhabited Building Very Low 12 ft (3.6m) II
Trash Containers Billeting and High Occupancy Family Housing Low 12 ft (3.6m) II
Primary Gathering Building Low 12 ft (3.6m) II
Inhabited Building Very Low 12 ft (3.6m) II
  1. Per UFC 4-010-01, February 9, 2012, DoD Minimum Antiterrorism Standards for Buildings, for new construction, standoff distances less than those in this column are not allowed for new buildings regardless of analysis or hardening. For existing buildings that are constructed / retrofitted to provide the required level of protection, standoffs less than those in this column are allowed, but discouraged.
  2. See UFC 4-010-02, for the specified explosive weights (pounds / kg of TNT) associated with designations I and II. UFC 04-010-02 is For Official Use Only (FOUO).