Cool pavement can make people hotter

Cool pavements—reflective coatings or additives applied to concrete and asphalt—could have an unfortunate byproduct.

New research conducted in Los Angeles’ San Fernando Valley examined the impact of pavements that had been mixed with a reflective additive. The finding: reflected energy from sunlight can make people walking on the pavement significantly hotter.

According to a researcher’s sensors, on a hot, dry day, a pedestrian could feel more than 7 degrees warmer on a “cool pavement,” compared to how he or she would feel on a standard blacktop. The standard dark pavement stores some of the energy and converts it into heat, while the cool pavement reflects more energy.

Studies support the notion that reflective surfaces can reduce the heat island effect by a few degrees in urban areas, but at least in the brightest times of the day, they can make people walking on them feel hotter. Since 2015, Los Angeles has covered about 50 city blocks in reflective coatings and seals, and plans to continue with this initiative.

Cross laminated timber (CLT) is gaining acceptance as an eco-friendly building material, a trend that will propel its growth through the end of the 2020s. The CLT market is projected to more than triple from $1.11 billion in 2021 to $3.72 billion by 2030, according to a report from Polaris Market Research.

Retail Centers | Nov 29, 2022

'Social' tenants play a vital role in the health of the retail center market

After a long Covid-induced period when the public avoided large gatherings, owners of malls and retail lifestyle centers are increasingly focused on attracting tenants that provide opportunities for socialization. Pent-up demand for experiences involving gatherings of people is fueling renovations and redesigns of large retail developments.

Multifamily Housing | Nov 29, 2022

Number of office-to-apartment conversion projects has jumped since start of pandemic

As remote work rose and demand for office space declined since the start of the Covid-19 pandemic, developers have found converting some offices to residential use to be an attractive option. Apartment conversions rose 25% in the two years since the start of the pandemic, with 28,000 new units converted from other property types, according to a report from RentCafe.

Seismic Design | Nov 16, 2022

SPC-4D: 7 reasons California hospital building owners should act now to meet seismic compliance

Seismic compliance with the applicable California building codes is onerous and disruptive for building owners, especially for a building in the heavily regulated sector of healthcare. Owners of older buildings that house acute care services have a big deadline on the horizon—Jan. 1, 2030, the cutoff date to upgrade their buildings to SPC-4D.

Green | Nov 13, 2022

USGBC updates LEED v4 to better address greenhouse gas emissions and climate change

The U.S. Green Building Council (USGBC) will update the LEED v4 green building certification program to “more directly address greenhouse gas emissions and climate change” according to a USGBC news release.

Green | Nov 13, 2022

NREL report: Using photovoltaic modules with longer lifetimes is a better option than recycling

A new report from the U.S. National Renewable Energy Laboratory (NREL) says PV module lifetime extensions should be prioritized over closed-loop recycling to reduce demand for new materials.

Green | Nov 13, 2022

Global building emissions reached record levels in 2021

Carbon-dioxide emissions from building construction and operations hit an all-time high in 2021, according to the most recent data compiled by the Global Alliance for Buildings and Construction.

Legislation | Nov 13, 2022

U.S. voters pass numerous affordable housing measures

Voters in many U.S. jurisdictions passed housing measures Nov. 8 that will collectively set aside billions of dollars in new funding to create more affordable housing and provide protections for renters.