Work Item
ASTM WK91060

Revision of C1186-22e1 Standard Specification for Flat Fiber-Cement Sheets

Rationale

The proposed changes are with regards to the surface burning characteristics conditions of acceptance. Both the flame spread and smoke-developed index remain unchanged for fiber cement sheets used for calibration or supporting materials for ASTM E84. The condition of acceptance changed for fiber cement sheets used in cladding, façade, curtain wall, and soffit applications only. This is due to the fact that none of the model Codes have such stringent flame spread and smoke-developed requirements for any exterior wall coverings.

Details

Developed by Subcommittee: C17.02

Committee: C17

Staff Manager: David Lee

Work Item Status

Date Initiated: 06-07-2024

Technical Contact: Emma Amiralaei

Item: 000

Ballot:

Status: