by Rebecca Walker — May 22, 2009—Moisture and mold don’t make the headlines the way they once did, but they are still problems in some structures.
Guidance on how to best design buildings with adequate moisture control features is contained in a new standard from ASHRAE. ANSI/ASHRAE Standard 160, Criteria for Moisture Design Analysis in Buildings, formulates design assumptions for moisture design analysis and criteria for acceptable performance.
“If the designer elects to perform a design moisture analysis, the standard requires he or she to think about the interior conditions that will be maintained in the building and the effect that may have on building envelopes,” Anton TenWolde, chair of the committee that wrote the standard, said. “The standard provides a methodology for the first time to make consistent design recommendations, such as the need, type and placement of vapor barriers in any climate.’
The standard introduces criteria to handle rain, wind and other exterior moisture weather loads.
The cost of the publication is $39 ($33, ASHRAE members). To order, go to the ASHRAE Web site.
