ANSI Load Ratings

pedestrian rated

Pedestrian-rated enclosures are for use in green space applications that should never experience vehicular traffic.

TIER 8

TIER 8 enclosures are located near vehicular traffic, but are not intended to be driven over. In the drawing, TIER 8 enclosures are located in a parking lot but are blocked by concrete tire stops. Also shown are TIER 8 enclosures that are located in places that protect the enclosure for vehicular traffic such as behind a light pole or surrounded landscaping.

TIER 15/22

TIER 15/22 enclosures are located in areas that may experience non-deliberate heavy vehicular traffic. Such areas include “right-of-ways” and medians. TIER 15 enclosures should also be used in parking lots where the enclosure is not protected from traffic such as near a light pole. It is also possible to use TIER 15 enclosures in single lane alleys as long as they are located in the center of the alley straddle the enclosure with both tires. TIER 22 should be used when enclosures that may be exposed to very heavy non-deliberate traffic that exceed the design load of TIER 15.

(click image to enlarge)

Loading Requirements

Pedestrian-rated
Pedestrian traffic only
Vertical
Test Load
13.3kN
3,000 Lbs
Tier 8
Sidewalk applications with a safety factor for occasional non-deliberate vehicular traffic
Vertical
Design Load
Test Load
35.6 kN
53.4 kN
8,000 Lbs
12,000 Lbs
Lateral
Design Load
Test Load
28.7 kN
43.1 kN
600 Lbs/sq. ft
900 Lbs/sq. ft
Tier 15
Driveway, parking lot and off-roadway applications subject to occasional non-deliberate heavy vehicular traffic
Vertical
Design Load
Test Load
66.7 kN
100.1 kN
15,000 Lbs
22,500 Lbs
Lateral
Design Load
Test Load
38.3 kN
57.5 kN
800 Lbs/sq. ft
1,200 Lbs/sq. ft
Tier 22
Enclosures that may be exposed to very heavy non-deliberate traffic that exceeds the design load of TIER 15
Vertical
Design Load
Test Load
100.1 kN
150.1 kN
22,500 Lbs
33,750 Lbs
Lateral
Design Load
Test Load
38.3 kN
57.5 kN
2,400 Lbs/sq. ft
3,600 Lbs/sq. ft
AASHTO H-20
Deliberate vehicular traffic applications
Certified precast concrete, cast iron, or AASHTO recognized material