LA JOLLA, CALIF. — Two California retrofit projects will use advanced composite materials for the column wrapping portion, Mohsen Sultan said in an interview at the Wilson Forum in La Jolla.
The California Transportation Department awarded a $2.4 million contract to Whitaker Construction Corp. of Santa Margarita, Calif., on Feb. 3 for work in Santa Barbara County and an $11.8 million contract to McCarthy Bros. Construction Co.'s Austin, Texas, division in January for a Pasadena project.
``We are in the process of checking shop drawings'' for the composites portion of the Santa Barbara project, said Sultan, chief of Caltrans' new technology management branch.
Joint venture Hexcel Fyfe Co. of San Diego will wrap fiberglass to provide confinement and maintain the rectangular cross-sections of eight spandrel columns, according to Hexcel Fyfe's Scott Arnold. The composites work, valued at $44,910, is scheduled to begin in late April, said Matt Bousman, Whitaker contract administrator.
The columns support the southbound lanes of Highway 101 at the Arroyo Quemado bridge, about 25 miles north of Santa Barbara.
Separately, sensitive discussions are progressing to hire a subcontractor to encase the bottom 41/2 feet of each of 80 rectangular spandrel columns supporting Highway 134, a limited access freeway, at Pasadena's Arroyo Seco.
Structures representative Carl Zachman said the two approved specialty wrapping systems are E-glass fabric from Hexcel Fyfe and the carbon fiber Robowrapper technology from XXsys Technologies Inc. of San Diego.
In December and January, XXsys wrapped six columns supporting Interstate 5 in San Diego County in a directed Caltrans procurement.
Caltrans is completing retrofit work by Dec. 31 on a portion of a statewide seismic safety program.