Geologic Hazards

City of Chilliwack, British Columbia to Pay $18M for Up to 42 Homes On Landslide

chilliwack_bc_landslide_neighborhood The Chilliwack Times reports that the City of Chilliwack will pay 80% of the assessed home value for up to 42 homes in an Eastern Hillside subdivision that are located on a slow moving landslide. The issue was first noticed in 2001 and several homes have had significant damage, but most are currently undamaged. The City denies any responsibility, but it’s legal counsel recommended a settlement. (Photo by Paul J. Henderson, Chilliwack Times)

Normally the geotechnical engineer for the subdivision would be held accountable. But apparently the slip surface is located 30-m below grade, much deeper than borings for a typical investigation for a subdivision. I wonder if there were any geologists consulted? Click through for a Google map view of the area and you can do your own armchair photogeology quarterbacking! Your heart does go out to the people losing their homes, they had no idea. But it could be worse, they could be in La Jolla and be getting squat.


Landslide damage in north Salt Lake City area
Geologic Hazards

Slow Moving Landslide in North Salt Lake City Area

Landslide damage in north Salt Lake City areaResidents of a neighborhood on the north side of Salt Lake City, Utah received some bad news recently from a state geologist. The slow moving landslide that has been moving on the order of several inches per year has begun moving at a faster rate. They predict movement on the order of feet per year. Several houses have already been condemned and torn down with more likely. Click through for some news footage showing the problem area and some of the damage to house foundations, sidewalks, pipes and other reactions from unfortunate residents. (Photo by KSL, NBC Salt Lake City affiliate)



Updated – DFI Committee Looking for Soil Nail Data

[Update 2008-06-25 8am] I saw somewhere that they were looking for this info by July 1, but I don’t know where. I couldn’t find a deadline on the DFI Committee page. Maybe they erased it. [/Update]

The Tiebacks & Soil Nailing Committee of the Deep Foundations Institute is collecting data on soil nail wall performance. From the Tiebacks & Soil Nailing Committee page:

A request for information has been distributed to all DFI members, academia and various other industry members.  Information being sought includes typical project, geotechnical and wall geometry information, design and analysis methods and software, construction and monitoring duration, settlement and lateral deformation data, and nail strain gauge data.  Click here to download the PDF form to enter your project’s information to the committee for compilation and analysis.