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Extracted Content

o Isolate areas of work to prevent contamination of other spaces, whether they are

finished or not. Seal doorways and windows, or tent off areas as needed using temporary barriers.

o Use walk-off mats at entryways to reduce introduced dirt and pollutants.

o Use dust guards and collectors on saws and other tools.

• Housekeeping : Maintain a clean jobsite. Use vacuum cleaners with high-efficiency particulate filters and use sweeping compounds or wetting agents for dust control when sweeping.

• Scheduling : Sequence construction activities to reduce air quality problems. For renovation projects, coordinate construction activities to minimize or eliminate disruption of operations in occupied areas.

REQUIREMENTS EXPLAINED

Using established best practices during construction can protect construction workers from poor air quality and extreme heat.

The prerequisite requires projects to develop and implement construction management practices for the buildings’ construction and preoccupancy phases. The required practices are primarily adapted from the SMACNA IAQ Guidelines for Occupied Buildings under Construction, 2nd edition, 2007, ANSI/SMACNA 008–2008, Chapter 3 . [142] The extreme heat requirement is adapted from OSHA prevention guidance for preventing heat-related illness. [143]

The practices must address all the following criteria:

No Smoking

Prohibiting smoking during construction supports a healthier and safer work environment. Smoking is a fire hazard. It creates odors and elevated levels of airborne contaminants that are associated with respiratory, cardiovascular, and other health problems. [144] Although cigarette smoking has declined among U.S. workers overall, its prevalence remains high among construction workers. [145] Prohibiting smoking preserves the integrity and longevity of building materials that can absorb smoke, such as insulation and drywall.

142 “SMACNA IAQ Guidelines for Occupied Buildings Under Construction”, SMACNA, (n.d.), https://store.smacna.org/iaq-guidelinesfor-occupied-buildings-under-construction. 143 “Heat Prevention”, OSHA, (Accessed Feb 3 2025), https://www.osha.gov/heat-exposure/prevention. 144 Öberg, Mattias et al., “Worldwide burden of disease from exposure to second-hand smoke: a retrospective analysis of data from 192 countries”, (2021), The Lancet, Volume 377, Issue 9760, 139 – 146. 145 Syamlal, G., King, B. A., and Mazurek, J. M., “Tobacco product use among workers in the construction industry, United States, 2014 - 2016”, (2018), American Journal of Industrial Medicine, 61(11), 939–951, https://doi.org/10.1002/ajim.22907.

U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 458