1999
POINT-LOMA SEWER OUTFLOW REPAIRS
San Diego, CA
SCOPE OF WORK
C&W repaired leaks in the Y-section of the sewer
outfall. At a depth of 210 ft, divers cut access into
the old diffuser legs and sealed leaks in the gates.
Additionally, C&W designed and installed Monel steel
manhole cover plates.
POINT OF CONTACT:
City of San Diego Operating & Wastewater Division
Mr. Royal Manaka
(619) 221-8740
1999
POINT LOMA SEWER OUTFALL INSPECTION
San Diego, CA
SCOPE OF WORK
C&W inspected the sewer outfall for the City of San
Diego during repair of a broken section of the outfall.
POINT OF CONTACT:
City of San Diego Operating & Wastewater Division
Mr. Royal Manaka
(619) 221-8740
JANUARY 1995
TYGRAT DAM
Taylor County, WV
SCOPE OF WORK
C&W crews demolished the existing low-flow valves and
cut a 16'x16' access hole through the 6' thick concrete
downstream wall of the valve chamber. A new support
frame was placed and a 58" diameter ring jet valve was
installed. This process was done at two locations on the
dam. Scaffolding on the downstream face of the dam
allowed C&W workers to make cuts in the existing
concrete around the old outlet valve. Pieces of concrete
as heavy as 22,000 lbs. were excavated. C&W workers
discuss the situation. Visible are the steel arch and
multiple reinforcing bars which will support newly
poured concrete.
- The new outlet valve is lowered over the side.
- The new outlet valve is secured into its final
position.
- The valve is function-tested for the first time.
POINT OF CONTACT:
U.S. Army Corps of Engineers
Mr. Joseph Elwell
(724) 684-7462
MARCH 1994
WANAPUM AND PRIEST RAPIDS DAMS SPILLWAY CONCRETE
REPAIRS
Grant County, WA
SCOPE OF WORK
C&W refurbished underwater concrete spillway sections
damaged by prolonged water cavitation. C&W designed
concrete mixes, prepared affected areas for forming,
installed forms, placed 765 cu. yds. of undermined fill
concrete, and preplaced 245 cu. yds. of aggregate/self
leveling concrete. Repair evolutions were documented by
underwater video.
- C&W workers pump concrete from a boom truck.
- Another view of the pumping operations.
- Barge-mounted lattice crane.
- Divers suit up prior to entering the water.
- Material and supplies are moved via
barge-mounted crane.
- Crane prior to loading onto the barge.
- A view of the dam showing the numerous radial
gates and piers.
- A downstream view of a radial gate, piers, and
spillway.
POINT OF CONTACT:
Public Utility District No. 2 of Grant County
Mr. Dana Jeske, P.E., Civil Hydro Engineer
(509) 754-5088 |