Load Class Ratings

At Slot Drain Systems, we recognize that reliable drainage solutions must endure various traffic conditions. Our drains are engineered for resilience, are capable of withstanding vehicular traffic, and ensure suitability throughout your entire facility.

Our team of drainage specialists is ready to assist with your project’s specific load requirements. Contact us today to explore how we can support your needs with Slot Drain Systems’ durable solutions!

ASME A112.6.3-2001

ASME LIGHT DUTY

up to 2,000 lbs

Suitable For: Light commercial and residential applications, tailored for pedestrian traffic. Used for private driveways, light-duty parking areas, and other spaces with light vehicle traffic.
ASME MEDIUM DUTY

2,000-4,999 lbs

Suitable For: Typically used in environments where light vehicular traffic is present, such as small industrial facilities, sidewalks, and residential parking.

ASME HEAVY DUTY

5,000-7,499 lbs

Suitable For: Designed for areas with constant heavy vehicle traffic, including major industrial sites and high-capacity freight transport areas.

ASME EXTRA HEAVY DUTY

7,500-10,000 lbs

Suitable For: Designed for areas with constant heavy vehicle traffic, including major industrial sites and high-capacity freight transport areas. Engineered for forklift traffic.

ASME SPECIAL DUTY

over 10,000 lbs

Suitable For: Crafted to handle extreme loads such as airport traffic. Drains meeting this standard ensure rosbust performance in demanding environments.

DIN 19580 / EN 1433

DIN Load Class A

3,372 lbs per foot

Suitable For: Pedestrian areas and light traffic zones. Ideal for areas with foot traffic, such as walkways, gardens, and patios.
DIN CLASS B

21,800 lbs per foot

Suitable For: Sidewalks, residential parking and light industrial areas. Used in environments where moderate traffic, including commercial vehicles, is expected.

DIN CLASS C

56,200 lbs per foot

Suitable For: Commercial and industrial zones with heavy traffic. Ideal for areas where regular heavy vehicle & forklift traffic occurs, such as warehouses and large parking lots.

DIN CLASS D

89,920 lbs per foot

Suitable For: Industrial loading docks and public roads with heavy truck & forklift traffic.

DIN CLASS E

134,800 lbs per foot

Suitable For: Extremely heavy industrial areas and specialized high-capacity applications: large ports, heavy freight zones, and similar environments where maximum load resistance is required.

DIN CLASS F

202,320 lbs per foot

Suitable For: Exclusively for airport traffic, this standard is for drains engineered to withstand extreme loads. Specifically used for airports, terminals, port docks etc.

More on Load Ratings

ASME A112.6.3-2001 
Used when the drain system will be used inside of a building.  This is a plumbing standard developed by the American Society of Mechanical Engineers.
AASHT0 M306-10
Used for drains in civil and transportation work. Developed by the American Association of State Highway and Transportation Officials, this standard was updated in 2010 to account for various sizes of linear drainage systems.
FAA AC: 150 / 5320-6D 
This standard is used for drains in aviation work and sea ports.
DIN 19580 / EN 1433 
This drain standard is an European standard. This test standard is one of the few that was specifically written for trench drains.
ADA Grating Guidelines:
The Americans with Disabilities Act (ADA) requires that gratings in walkways adhere to specific slot width limitations. Slots must be positioned longitudinally and perpendicular to the main direction of travel to ensure accessibility. The maximum slot width is ½ inch (13mm).
Heel-Proof Design:
A “Heel-Proof” design features slots or perforations less than ¼ inch (8mm) in width or diameter, ensuring both safety and compliance with industry standards..
Request A Quote
Download Your Specifications