Damage Rating

Description of Door / Frame Response

Damage Level Category

Undamaged

The door specimen is substantially unchanged after the airblast loading and is fully operable. Any permanent deformation shall be within 3 mm (¹/₈ in.) of the pretest condition. The door must be checked that it is operable by unlatching and swinging the door open and then closed and latched. The door can be secured. The external portion of the frame, frame anchorage, latches, and hinges shall not show any visible damage. If strain gauges were used, the recorded stresses in the door material are within the specifier’s acceptable limits.

I

Damaged but Openable

The door panel, the frame, and/or the hardware has acceptable permanent deformation or damage; however, the door remains openable. The door must be checked that it is openable by unlatching and swinging the door open far enough to allow ingress / egress. Acceptable permanent deformation or damage and degree of opening to permit ingress / egress is determined by the specifier based on the end use of the door.

II

Non-catastrophic Failure

The door may get lodged into the frame from the blast force or the door may swing open in rebound. The door may be inoperable and may hinder ingress / egress. Acceptable permanent deformation or damage is determined by the specifier based on the end use of the door. The door and hardware components are not permitted to detach from the frame and be thrown into the test structure witness area. The frame and frame anchorage must remain and integral system and attached to the test structure wall.

III

Limited Hazard Failure

The door leaf becomes separated frame or the frame anchorage fails and the entire door leaf and frame assembly become separated from the test structure wall and are thrown into the test structure witness area. The dislodged door leaf or assembly must remain within the 3 m (120 in.) finish floor as shown in Fig. 1. There shall be no evidence of any dislodged hardware component striking the witness panel mounted on the back wall of the test structure. Note: A door assembly equal to or exceeding 3 m (120 in.) in height cannot obtain a “Limited Hazard Failure – Category IV Rating” due to the size limitation of the test structure witness area.

IV

High Hazard Failure

The door leaf becomes separated frame or the frame anchorage fails and the entire door leaf and frame assembly become separated from the test structure wall and are thrown into the test structure witness area and strikes the witness panel above the “High Hazard Threshold” shown in Fig. 1. There shall be no evidence of any dislodged hardware component striking the witness panel above the High Hazard Threshold.

V

Hazard Rating

Description of Door’s Glazing Response

Hazard Level

No Break

The glazing is observed not to fracture and there is no visible damage to the glazing system.

H1

No Hazard

The glazing is observed to fracture but is fully retained in the door’s vision lite frame and the rear surface (the side opposite the airblast loaded side of the specimen) is unbroken.

H1

Minimal Hazard

The glazing is observed to fracture and the total length of tears in the glazing plus the total length of pullout from the edge of the vision lite frame is less than 20 % of the glazing sight perimeter. Also, there are three or less perforations caused by glazing slivers and no fragment indents anywhere in a vertical witness panel located 3 m (120 in.) from the interior face of the specimen and there are fragments with a sum total united dimension of 25 cm (10 in.) or less on the floor between 0 m to 1 m (0 in. to 40 in.) from the interior face of the specimen. Glazing dust and slivers are not accounted for in the rating. Fragments are defined as any particle with a united dimension of 2.5 cm (1 in.) or greater. The united dimension of a glass particle is deter- mined by adding its width, length, and thickness. Glazing dust and slivers are all smaller particles.

H2

Very Low Hazard

The glazing is observed to fracture within 1 m (40 in.) of the original location. Also, there are three or less perforations caused by glazing slivers and no fragment indents anywhere in a vertical witness panel located 3 m (120 in.) from the interior face of the specimen and there are fragments with a sum total united dimension of 25 cm (10 in.) or less on the floor between 1 m (40 in.) and 3 m (120 in.) from the interior face of the specimen. Glazing dust and slivers are not accounted for in the rating.

H3

Low Hazard

The glazing is observed to fracture, but the glazing fragments generally fall between 1 m (40 in.) of the interior face of the specimen and 50 cm (20 in.) or less above the floor of a vertical witness panel located 3 m (120 in.) from the interior face of the specimen. Also, there are ten or fewer perforations in the area of a vertical witness panel located 3 m (120 in.) from the interior face of the specimen and higher than 50 cm (20 in.) above the floor and none of the perforations penetrate through the full thickness of the foil backed insulation board layer of the witness panel.

H4

High Hazard

Glazing is observed to fracture and there are more than ten perforations in the area of a vertical witness panel located 3 m (120 in.) from the interior face of the specimen and higher than 50 cm (20 in.) above the floor or there are one or more perforations in the same witness panel area with fragment penetration through the first layer and into the second layer of the witness panel.

N/A