- Subsidence Beneath a UK Sports Stadium | Geology.com
- Widespread landslides in Rio de Janeiro and Niteroi in Brazil – Dave’s Landslide Blog
- Contractor Cleared to Start Tunnel On Hetch Hetchy System Program – ENR: Engineering News Record via ASCE SmartBrief
‘Contractors on the centerpiece of San Francisco’s $4.6-billion improvement to the Hetch Hetchy Water System were given notice to proceed on April 1. The five-mile subterranean Bay Division Water Delivery Tunnel planned for under the San Francisco Bay will replace two 1920s and 1930s era pipelines with one 9-ft-dia welded steel pipeline bored as deep as 100 ft under the bay’s floor. The new tunnel will be more secure in an earthquake and a tunnel-boring machine will minimize environmental damage.’ - Texas homes affected by landslide to be resold – Dallas Morning News
- At least 113 dead in Brazil as record rains ease – Montreal Gazette
- Floods and landslides kill 95 in Rio slums after city’s worst rainstorms – The Guardian via USGS Landslides
- Stop Press: Over 200 people buried in last night’s landslide in Niteroi, Brazil? – Dave’s Landslide Blog
- Another major landslide in the Rio de Janeiro area of Brazil – Dave’s Landslide Blog
- Fault rupture photos released for Easter Sunday Baja quake – Arizona Geology
- Photos of Earthquake road damage, Highway 5 south of Mexicali – Arizona Geology
These are some pretty remarkable images of damaged roadways. - Geologic map of Sierra El Mayor quake area – Arizona Geology
- Contractor, Owner at Odds Over Voids in vicinity of Seattle Beacon Hill Tunnel – ENR: Engineering News Record
- iPad to launch new ‘App’ for building designers – ConstructionWeekOnline.com via ASCE SmartBrief
- Landslide in Brazil Buries Scores of Houses – NYTimes.com
- Landslides hit Brazil’s slums hardest (AP) – KansasCity.com
- CONTECH announces a 13.9% price increase on all metal products – CONTECH
‘Scrap prices have doubled in the past four months and continue to rise. Combined with increasing global demand and the rising costs of iron ore and coal, these are the main reasons for this price increase…’ - The location of the Morro do Bumba landslide in Niteroi, Brazil – Dave’s Landslide Blog
- Latest Update on the Attabad landslide – Dave’s Landslide Blog
- Washington SR 14 Rockfall Mitigation Test Blasting: Two Views – YouTube (wsdot)
Press Releases
New Study Shows Odds High for Big California Quakes
Released: 4/14/2008 12:02:15 PM
California has more than a 99% chance of having a magnitude 6.7 or larger earthquake within the next 30 years, according scientists using a new model to determine the probability of big quakes.
The likelihood of a major quake of magnitude 7.5 or greater in the next 30 years is 46%-and such a quake is most likely to occur in the southern half of the state.
[Editor] At Left: Figure 1. The colors on this California map represent the UCERF probabilities of having a nearby earthquake rupture (within 3 or 4 miles) of magnitude 6.7 or larger in the next 30 years. As shown in the table, the chance of having such an event somewhere in California exceeds 99%. The 30-year probability of an even more powerful quake of magnitude 7.5 or larger is about 46%. [/Editor]
Project Related
Cal’s Memorial Stadium ready for face-lift
Any geological engineer or engineering geologist worth their salt knows that the Hayward Fault goes right through Cal’s Memorial Stadium. The stadium will be undergoing some $321 in repairs and seismic upgrades before it reopens […]
Project Related
The Claremont Tunnel – Designed to Survive Fault Rupture on the Hayward Fault
The Claremont tunnel beneath the Berkeley Hills on the east side of Oakland is a water supply tunnel that serves over 800,000 customers in Richmond, Oakland, San Leandro and neighboring communities. One of the unique things about the tunnel is that it crosses the active Hayward Fault. Most of the time when you talk about designing for earthquakes you’re talking about designing to withstand the seismic forces. In this case, the designers needed the water transmission tunnel to withstand up to 7.5-ft of offset due to fault slip and still maintain a minimum level of service. (Photo credit: Sue Bednarz, Jacobs Associates, Inc. by way of Civil Engineering Magazine)
This post describes the relatively recent Claremont Tunnel Seismic Upgrade Project as reported in Civil Engineering Magazine (May 2008, v. 78, no. 5, pp 58-63, 96-97).