As the main access route from I-90 into the city of Sammamish and the intersection of two trails--the East Lake Sammamish Tail and Laughing Jacob’s Creek Trail--the intersection of East Lake Sammamish Parkway (ELSP) and Southeast 43rd Way was a congested intersection for commuters,… Continue Reading
Day 5 - Monday 3/15/11 How well do seismically retrofitted URM buildings perform – what works and what doesn't? Today we start to answer that question. With engineers from the EERI Reconnaissance Team and the SEAOC Building Performance Assessment Team,… Continue Reading
Earthquake performance of a seismically retrofitted building. This building had steel moment frames around the perimeter of the first level with plywood diaphragm strengthening under the second floor framing. Collapsed URM second level exterior walls and a collapse prevention performance… Continue Reading
A 2 story unreinforced masonry (URM) building roof collapse. Note the left side of the collapsed wood roof being support by a small kitchen table – duck, cover and hold. Christchurch CBD, New Zealand. Overview Christchurch has a population of… Continue Reading