An ASTM work group tasked with establishing a human impact standard for skylights is nearing the next stage of development.

The group, ASTM WK17797, has completed work on the draft for the “Specification of Human Impact Test Criteria, with Procedure for Testing Unit Skylights and Related Products used on Skylight Openings on Non-Residential Roofs with a slope of 4:12 or less for Determining Fall-Through Resistance.”

CrystaLite’s John Westerfield, who chairs the AAMA Skylight Fall Protection Task Group, says the working draft is being reformatting to adhere to the official ASTM document format. “We will be soon balloting the final draft to the work group,” he says, “with the aim to pass the document up to the sub-committee as soon as possible.”

Westerfield says the group doesn’t expect unanimous approval from the document ballot, as some members aren’t satisfied that plastic glazing remains as a possible means of fall protection.

“Not all plastic is the same, just as not all metal is the same,” he says. “Those familiar with the different types of plastic glazing materials are very comfortable with the very strict durability criteria set forth and the additional redundant requirements mandated for the use of plastic glazing as part of the system.”

The ASTM work group includes representation from skylight manufacturers, glass and plastic glazing manufacturers and government representatives. The AAMA task group has spent four years generating consensus input for the standard.

The scope of WK17797 is “[t]o establish fall-through resistance criteria for skylight openings on nonresidential and low-slope roofs. The intent is to prevent a human from falling through the opening after impact.”

Read the full scope here.

USGlass covered the standard development process earlier this year.

Stay tuned to™ for updates on the progress of the standard as more information is made available.