Purple Line Extension, Sections 2 & 3, Los Angeles County, CA

The Purple Line Extension is a new heavy rail subway corridor in Los Angeles County, extending the Metro Purple Line from Wilshire/Western station to the Westside region.

PARIKH assisted the management team on Section 2 of the project, which will extend trackage 2.6 miles to Century City with two new stations (Century City Station and Rodeo Station), and Section 3 of the project, which will extend the trackage to VA Hospital with two new stations (UCLA Station and VA Hospital Station). Our services include:

• Field exploration coordination and sample review,
• Development of geotechnical design parameters,
• Assistance to the preparation of geotechnical data reports and geotechnical design memoranda,
• Preliminary design for support of excavation system, geotechnical instrumentation program, and other components associated with underground construction including ground improvement, tunnels, cross passages, and caverns,
• Preparation of contract specifications for excavation support systems, geotechnical instrumentation, construction monitoring program, protection of existing structures, dewatering, tunneling, and other components of underground construction,
• Constructability studies,
• Preparation of drawings, specifications, and calculations for change notices and review of submittals to meet contract requirements as part of the engineering services during construction,
• Development of structure protection program, including estimation of building and utility settlements and their impacts. It required coordination of technical professional including geotechnical, structural, and civil engineers, and
• CAD Support.