Geosynthetics AUGUST/SEPTEMBER 2022 Volume 40 Number 4 12 ON THE COVER An 8,611 (800 m2) extensive green roof in central Mexico City. Features 12 Geosynthetics in green roofs By Asenet Lozano 18 Construction considerations for wick drain ground improvements By Michael Etezad, Ben Riddell, Ken Bocking, Dennis Becker, Travis Pastachak, Jason Bell, Erik Wimmelbacher and Steve Boileau 26 Building a reinforced soil wall with geogrids at hillside By Guillermo Paz 26 18 GeosyntheticsMagazine.com 3http://www.GeosyntheticsMagazine.com