Pipeline 4 Relining, Paint Mountain to
Black Mountain Vent
Cement mortar lining of approximately 10,707 lineal feet of 93-inch welded steel pipe.
Contract Value: $1,100,000
Contract Completion: May 2008
This project involved the cement mortar lining of approximately 10,707 lineal feet of 93-inch welded steel pipe. The project was constructed on very steep slopes and was completed on an expedited schedule.
Los Angeles Department of Water and Power
Jawbone SAG Pipes of theFirst Los Angeles Aqueduct
Cement mortar lining of 6,315 lineal feet of 120” riveted steel pipe
Contract Value: $2,637,588
Contract Completion: April 2008
LADWP Jawbone SAG Pipes of the First Los Angeles Aqueduct – The project, originally constructed in 1912 using a 52 mule team hauling steel for Jawbone Siphon, involved the cleaning and cement mortar lining of approximately 6,315 lineal feet of 120” riveted steel pipe on very steep terrain up to 65% grades. The project was completed during a shut down period on a highly expedited schedule. LADWP permitted the project to be completed over two winter shut downs, however, LHWS completed all work easily during the first shutdown period, one year ahead of schedule.
Del Dios to Black Mountain Ranch & Black
Mountain Ranch to Black Mountain Vent
Field placed internal cement mortar lining of 28,410 ft of 92” ID new steel liner pipe.
Contract Value: $32,293,800
Contract Completion: June 2006
This project involved the cement mortar lining of approximately 28,410 lineal feet of 92-inch welded steel pipe. The cement mortar lining was performed on steep slopes and on an accelerated schedule. The special L.H. Woods & Sons, Inc. mortar lining equipment successfully applied a ½” thick lining on grades up to 42%. The lining
was completed on time and budget in 51 days, again setting new standards of productivity.
San Diego County Water Authority
Pomerado Pipeline 4
Field placed internal cement mortar lining of 25,900 ft of 65” ID and 80” ID new steel liner pipe.
Contract Value: $21,597,000
Contract Completion: June 2005
The special property of Cement Mortar Lining is that it stops corrosion of ferrous pipes by chemical means. An elevated pH layer is created in contact with the surface of the pipe, in which corrosion cannot occur. This property makes it uniquely durable and tolerant of cleaning and lining imperfections. L.H. Woods designed and built the special equipment capable of applying the ½” thick lining on grades up to 40% without external assistance. Batching was done using bulk materials, reducing dust, labor and cost. The lining was completed on time and budget in 55 days, setting new standards of productivity.