Shape memory alloys (SMAs) are a class of materials that can restore their original shapes after experiencing extreme deformation beyond their elastic ranges. The interest in studying the potential of using SMAs in construction has been growing for the last 20 years. This is the first of two articles on SMAs that introduces these materials and their properties as well as their potential in structural applications.

The National Institute of Building Sciences (NIBS) convened an executive Social Equity Roundtable earlier this year, gathering dozens of leaders to advance diversity, equity, and inclusion (DEI) in the built environment. The meeting was a follow-up to a December 2020 executive roundtable titled “Improving the Workforce of the Built Environment through Social Equity.” The goal of these meetings was to discuss workforce and industry sustainability and to review data, best practices, and partnerships.

The Concrete Product & Service Guide comprises company names, URLs, and key phone numbers. We have maintained the product categories from last year’s guide, and we have also maintained services, including industry associations, consulting firms, contractors, and testing agencies.

Recent fires have led to a new provision in the 2021 edition of the International Building Code, requiring automatic sprinkler systems throughout buildings classified as parking garages where the fire area of the open parking garage exceeds 48,000 ft² (4460 m²). Related issues are discussed, including greatly increased use of plastic components and lithium-ion batteries in vehicles, fire-resistance requirements, and fire effects.