Project Related

URETEK Rehabilitates Prison Rec Hall

An aging prison building in Fort Worth, Texas had seen areas of settlement as much as 7.5 inches inside the building. URETEK successfully implemented their URETEK Method to lift the sunken slabs and stabilize the […]

Millenium Tower in San Francisco, image - MLS
Miscellaneous

San Francisco Millennium Tower Has Settled 16 Inches

Millenium Tower in San Francisco, image - MLSThe residential high-rise Millennium Tower in San Francisco has settled a total of 16 inches since opening, 2 inches deferentially.  A spokesman for the tower owner blames the settlement on the excavation next door for the Transbay Transit Center, a  $2.4 billion dollar project being constructed 60 feet underground.

However, the Transbay Joint Powers Authority (Transbay) hired geotechnical firm Arup in 2010.  Their initial report indicated that the tower had already settled 10 inches by the time excavation began for the Transit center.  Arup seems to have been tasked with design, installation, and perhaps monitoring of a geotechnical monitoring program, some information on the scope is available in a 2012 presentation given by Arup available on the Transbay website.

[Editor] Click through for the rest of this post. [/Editor]

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Grain bin at a Williamsburg, Virgina poultry processing facility that had foundation settlement issues
Press Releases

Grain Bin Settlement Problems Common to Concrete Foundations Solved with NCFI’s Geotechnical Polyurethane Foam Technology

Grain bin at a Williamsburg, Virgina poultry processing facility that had foundation settlement issuesNew Solution Saves Money and Time Preventing Loss of Grain and Equipment Damage

MOUNT AIRY, NC—Soil consolidation and settlement happens. It’s a fact of farm life. Secondary consolidation slowly forces water out of the spaces between soil particles. As this happens, soil particles move close together and settling occurs. Floors drop and become uneven. Newer grain silos and bins are using concrete floors instead of metal, and as secondary consolidation occurs beneath them, depressed or “settled” areas, form within the bin. Grain accumulates in the depressed areas, but cannot be retrieved by the bin sweeper. In fact, the sweeper, a kind of auger that transports grain up from the floor, can become damaged from prolonged exposure to the uneven floor.

This is exactly what Kirk Roberts of CJGeo, a Williamsburg, Virginia-based commercial foundation repair and geotechnical contractor, found when he got the job to repair the foundation of a massive 106-foot diameter grain bin at a poultry processing facility on the Eastern Shore of Maryland. “Once they removed the hundreds of thousands of bushels of grain, we found the floor had dropped some three inches in one section of the bin leaving a large pocket of grain out of reach of the bin sweeper.”

[Editor] Read on for the rest of this press release from GeoPrac sponsor NCFI Polyurethanes. [/Editor]

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No Picture
Articles

Historic Brewery Restored With Help of Geopolymer

Historic Pearl Brewery in downtown San AntonioTurning a 119 year old brewhouse into a four-star boutique hotel is no easy task. For the project to be a success, the structure had to literally be raised from it’s grave.

Pearl Brewery operated from 1883 until 2001 in their downtown San Antonio, Texas location. It was once the largest brewery in Texas, and even kept afloat during the Prohibition era. Today the 22- acre Pearl site grounds has become a culinary gathering place where you can eat, live, learn, and play on the banks of the San Antonio River.

Renovating the original building would be no easy task for the developer. The building had settled approximately 5 inches.  URETEK ICR successfully used their patented URETEK Method® to lift and stabilize the foundation with geopolymer.

[Editor] Read on for the rest of the contributed article from Ty Taylor of GeoPrac.net sponsor, URETEK ICR [/Editor]

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Typical residential foundation settlement profile
Available Resources

Residential Foundation Investigation Standards

Bob Brown with Arizona Foundation Repair, a foundation repair contractor, has a nice blog post about the need for better standards for forensic investigations for residential foundation investigations. He points to some standards by a […]

Project Related

Port of Oakland Soil Stabilization

The giant straddle cranes that load and unload cargo from the container ships at the Port of Oakland apply a fairly concentrated load along their wheel path. Over time, the wheel path area has settled, […]

ASTM No. 57 Stone
Articles

The Curious Case of No. 57 Stone

ASTM No. 57 StoneThe American Society for Testing and Materials, or ASTM, No. 57 stone is often used as sub base fill material below road surfaces and buildings. It is a fragmented stone with angular edges and is regularly utilized as a drainage layer when used with geotextile fabric. Although the material is touted by many as "self-compacting," excess voids left from zero compactive effort in locations with little confinement may not eliminate the possibility of future settlement. What happens when the environment above the No. 57 stone causes it to settle?

[Editor] Read on for the answer to this interesting question in the case of settlement of a structure at the University of North Carolina at Chapel Hill. The contributed article by Katherine Witt describes how URETEK Mid-Atlantic used their high-density polyurethane resin to stabilize the No. 57 stone beneath a settled foundation as well as lift the surrounding slab back into place. [/Editor]

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Rockscience Settle3D geotechnical software for analyzing settlement and consolidation
Software Updates

Settle3D 3.0 by Rockscience Adds New Features

Rockscience has been busy soliciting feedback from their user base on news features for their settlement analysis software program, Settle3D. After receiving all of the feedback in the beta program, many of the user suggestions […]