2020 ASHRAE TECHNOLOGY AWARD CASE STUDIES M&V Underlies University Building's Low Energy Use The ENR2 building is centered around a five-story "canyon." Roof drainage spills down through open pipes to a collection system below the landscaped canyon floor, creating a vibrant visual and auditory experience when it rains. BY HENRY JOHNSTONE, P.E., MEMBER ASHRAE PHOTO CREDIT BILL TIMMERMAN ASHRAE JOURNAL