New RFI No. 10 As of 10-Jun-2010 11:32 AM CT Vitruvian Infrastructure Phase 1C Park 4010 Marsh Lane Addison, Texas 75001 Project Number: 1308C Status: Outstanding Subject HOT! Interior Piers at Wildlife Observation Deck Reason Code None Question The piers under the drip line that require low clearance drilling have water coming into the holes requiring casing. There is no good way to get the casing installed under the branches and insert into the hole without damage to the trees. Slurry casing would result in large amount of bentonite coming out of the hole each time a shaft is poured that could possibly affect the tree. Proposed Solution Change this to a shorter shaft that stays above the waterline and use a belled pier. We propose a 8' deep 12" diameter pier with a 30" diameter bell on the bottom. This would remove the need for casing. If future ground movement were a concern, we could use an adjustable shoe between the deck beam and the shaft. If movement did occur in the future, the deck could be leveled back out. See attached. Attached Files Adjustable deck bracket.pdf Section: 3 - Concrete Int. Tracking #: Days Elapsed: 0 From: Jennifer Haynes Originated: 10-Jun-2010 11:33 AM CT To: Eric Little (First Recipient) Requested By: 13-Jun-2010 11:09 AM CT Copy to: Victor Lissiak III Robyn Jacobson Nick Jacob Wade Geistweidt Mark Gaines Bruce Dunne Clay Barnett Additional Info Proposed Solution Impact Critical Path? Yes Cost Change: Yes, may be Time Change: None Discipline Code: Structural Drawing Numbers: SP310, SP312 Needs Drawing Change? N/A History (Chronological Order) No history to display. Final Response (Closing) This item is still open. No final response to display. .................................................................................. Copyright (c) 1999-2010, Systemates, Inc. View the User Agreement for legal restrictions and terms of use applicable to this site. Use of this site signifies your agreement to the terms of use specified in the User Agreement. Projectmates - The Capital Project Management Software