ASDSO NE Regional 2011 Presentation
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Sally’s Pond Dam Rehabilitation
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ASDSO NE Regional 2011 Presentation
- 1. LAY DOWN SALLY: A CASE HISTORY OF THE SALLY’S POND DAM REHABILITATION Jeremy Young, PE ASDSO NORTHEAST REGIONAL CONFERENCE 2011 LAKE PLACID, NEW YORK June 6, 2011
- 7. Site Layout
- 8. Existing Dam - 2001
- 9. Auxiliary Spillway - 2007
- 10. Auxiliary Spillway - 2007
- 15. Design Concept
- 16. Design Concept
- 17. Construction NTP Oct 12, 2007 Contractor Petillo, Inc (Flanders, NJ) RCC Sub Gears, Inc (CO) Contract Manager NJ DPMC Bid Price $1.76M Schedule 300 days
- 29. RCC Placement
- 30. RCC Production
- 31. RCC Gravity Dam Construction
- 32. RCC Gravity Dam Construction
- 36. Nearly Completed Downstream Face
- 38. Completed Construction – Aug 2008
- 42. Questions? LAY DOWN SALLY: A CASE HISTORY OF THE SALLY’S POND DAM REHABILITATION Jeremy Young, PE ASDSO NORTHEAST REGIONAL CONFERENCE 2011 LAKE PLACID, NEW YORK June 6, 2011
Editor's Notes
- 1807 – Construction of Manor House Expanded 1860s and 70s 51 rooms – 28 bedrooms, 24 fireplaces, 13 bathrooms, 250 windows Victorian Style Impressive
- N values > 40. Dense alluvial deposits. OK for RCC support
- 5-ft high cofferdam 36” dia diversion pipe connected to existing outlet conduit
- Dec 23-24, 2007 storm overtopped the cofferdam 500 cfs, 2-yr event 6” over spillway In response, the contractor raised the cofferdam to about top of dam and excavated a diversion channel on the left abutment
- Jan – dewatered inundated area and repaired cofferdam Demo’d existing structure under observation of historical consultant
- Artifacts – cip, and gate
- Artifacts – marble, possible headstones
- Feb - constructing the low level outlet March – switched diversion channel to right abutment Mar 19 storm breached the cofferdam through the diversion channel 600 cfs – 2 to 5-yr storm event End of March – switched diversion back to the left abutment and ‘switched” contractor PMs
- 2400 cy in about 3 weeks Complete by the end of april 2008
- Anchor bar drilling, installation and Masonry reconstruction took about 2 months – May and June!!