6d supp
Item #: 6d_Supp Date: August 7, 2012 Terminal 18 Pilot Pile Cap Repairs August 7, 2012 1 Progress Update MONTHS ACTIVITY May-December 2011 Design & Permitting March-July 2012 50% Construction August-November 2012 100% Construction November-December 2012 Report & Closeout 2 Knowledge Gained What has been learned so far from the pilot project? Concrete demolition initially took longer than originally expected. The Pilot is helping us develop means & methods to reduce the amount of material to remove, and to speed up demolition where it is called for. Re-bar sandblasting - initially slower than expected. The Pilot allows experimenting with different equipment to improve and speed it up. Splicing in of new re-bar - initially the number of locations was unknown until demolition and sandblasting were completed. The Pilot is helping estimate future need for splices, and to improve efficiency of splicing. Grout placement into forms - has been challenging. The Pilot is enabling us to refine the specs for grout, and to match the grout to pumping equipment. The Pilot has demonstrated that areas with greatest distress correlate to percussion testing. The Pilot is also identifying other ways to predict problem areas such as location of "dobies", which supported re-bar in forms during original construction. 3 T18 Pilot Pile Cap Repair Breakdown Longitudinal cracking only Delamination only Longitudinal cracking and delamination 4 Of-S ,- eatt|e 5 6 7 \ _ Port:1 of Seattle' 8 'Port =' 1 of Seattle ' 9 10 1O 11 11 Benefits to Completing 4 Bents What additional knowledge can be gained from the pilot project? The first two bents under the Pilot provided production rates for initial set up, mobilization and repairs. Including the second two bents under the Pilot will demonstrate how much production rates accelerate once set up and running. Application of knowledge and skills gained repairing the first two pile caps will be applied on the next two caps to further improvements and efficiencies. Repairing all four pile caps will enable us to more accurately correlate exterior conditions from percussion testing and other means with actual conditions inside the caps. This stands to reduce repair costs by foregoing repairs where they are not needed. Likewise, it ensures repairs are performed where needed. 12 13 13
Limitations of Translatable Documents
PDF files are created with text and images are placed at an exact position on a page of a fixed size.
Web pages are fluid in nature, and the exact positioning of PDF text creates presentation problems.
PDFs that are full page graphics, or scanned pages are generally unable to be made accessible, In these cases, viewing whatever plain text could be extracted is the only alternative.