Work Item
ASTM WK96587

Revision of C578-23 Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation

Rationale

Structural design in foundations and roof systems requires evaluation of foam compression elasticity and strength. ASTM C578 currently has a methodology to characterize compression elasticity and strength per Section 11.5, but does not give any guidance as to the appropriate adjustment factors to establish a design stress. The work item will develop safety adjustment factors for compressive resistance.

Details

Developed by Subcommittee: C16.22

Committee: C16

Staff Manager: Mary Mikolajewski

Work Item Status

Date Initiated: 10-08-2025

Technical Contact: Robert Brooks

Item: 000

Ballot:

Status: