ABT, Inc. • PO Box 837 • 259 Murdock Road • Troutman, NC 28166
(800) 438-6057 • (704) 528-9806 • Fax: (704) 528-5478

Trench Former Grates

Slotted Grate

Part #: 1502.14
Load Class: 31.2
AASHTO H-25 Rated: Yes
Material: Ductile Iron
Open Area: 65%
Dim (LxWxT): 18x13.78x1.5
Weight: 26 lbs.

Engineered to enhance both mechanical strength and hydraulic capacity.
Made of ductile iron instead of grey iron, this new grate is stronger than ever. Load capacity has increased from Load Class 15.8 to Load Class 31.2.
The new design almost doubles the inflow capacity of the previous 1502.14 by increasing open area from 36% to 65%.
This clean bicycle safe design gives a fresh new look to surface drainage technology.
Best of all, these major design improvements come without an increase in cost.

Earlier #1502 grate designs are still available by special order, subject to demand, contact ABT's sales for revised part numbers.

Slotted Grate (Heavy Duty)

Part #: 1503.14
Load Class: 90.0
AASHTO H-25 Rated: Yes
Airport Rated: Yes
Material: Ductile Iron
Open Area: 41%
Dim (LxWxT): 18x13.75x1.5
Weight: 60.0 lbs.

Pedestrian (ADA) Grate

Part #: 1504.14
Load Class: 9.4
AASHTO H-25 Rated: Yes
Material: Cast Iron
Open Area: 22%
Dim (LxWxT): 18x13.75x1.5
Weight: 50.9 lbs.

Trim Banded Bar Grate

Part #: 1468.14
Load Class: 3.7
Fed. RR-F-624E Pedestrian: Yes
AASHTO H-25 Rated: No
Material: Galvanized Steel
Open Area: 88%
Dim (LxWxT): 24x13.75x1.5
Weight: 18.6 lbs.

Solid Cover

Part #: 1500.14
Load Class: 16.6
AASHTO H-25 Rated: Yes
Material: Cast Iron
Open Area: 0%
Dim (LxWxT): 18x13.75x1.5
Weight: 55.3 lbs.

How We Test Our Grates

Test Procedure: Grate/cover is placed in support fixture in a load testing machine. A 4 in (100 mm) diameter by 6 in (150 mm) steel rod is located longitudinally at grates/covers weakest point (column, shear or beam). Load is applied to steel rod until grate/cover fails (will not support load). Minimum failure load is used in the formula above. Load Class is based on the worst case service load carrying capacity per linear foot of grate/cover. Test assumes a line load with a minimum of contact area. Actual applications may involve a larger load contact patch, thereby increasing load carrying capacity.