Load Class Ratings

A floor drain’s load rating is a classification that indicates the type and magnitude of load it can be expected to support under ideal, standardized test conditions, giving specifiers a clear way to match the drain to its intended environment.

Global Drain Technologies (GDT) supports applications aligned with recognized industry standards, including ASME A112.6.3/CSA B79.3 and DIN EN 1433. The various load classifications for these standards are detailed in the table below.

Regulatory and testing requirements exist to match drainage with specific use cases. GDT can meet all levels of regulatory drainage testing. From AASHTO requirements for heavy-duty and roadway-related applications, to ADA and Heel-Proof designs for pedestrian corridors. Defining characteristics of the various testing standards pertinent to the manufacture of commercial and residential drainage are listed below.

ASME A112.6.8/CSA B79.8 

This standard outlines the design and performance criteria for trench drains and grate systems utilized within or around non-residential buildings. It references ASME A112.6.3/CSA B79.3 for load test procedures.

ASME A112.6.3/CSA B79.3

This standard details the design and performance requirements for floor drains and area drains that are used within and near building structures. Although this standard covers floor drains and area drains only, the trench drain standard ASME A112.6.8/CSA B79.8, relies on this specification for load test procedures.

DIN EN 1433 

This drain standard is an European standard. This test standard is one of the few that was specifically written for trench drains.

AASHT0 M 306-10

This specification applies to frames, grates, rings, and covers for inlets and manholes used in civil applications, particularly in traffic areas where load bearing is crucial. It also establishes static load test requirements comparable to those previously mentioned.

FAA AC: 150 / 5320-6D 

This standard is used for drains in aviation work and sea ports.

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 drain grate, designed to prevent debris accumulation and ensure pedestrian safety (particularly for high heels), features slots or perforations smaller than 0.313 inches (8 mm).

Please note that these standards do not cover unique loading conditions. Applications involving small, rigid wheels or dynamic loads, such as those occurring at traffic turning points, fall outside standard testing protocols and require project-specific analysis and validation. Please consult with GDT for custom solutions in these instances.