203_-_Enlarged_IDF_Rooms.pdf

This is a technical schematic document prepared for the County of San Mateo Department of Public Works in support of the Cellular Distributed Antenna System (DAS) project at the North County Wellness Center in South San Francisco, California. The document provides enlarged floor plans for the Intermediate Distribution Frame (IDF) rooms across multiple levels of the facility, detailing the physical layout and equipment specifications required for the neutral-host, 5G-ready DAS infrastructure. The plans specify rack configurations across seven designated racks, including IT systems (Racks 4 & 5), security equipment (Rack 3), miscellaneous systems (Racks 1 & 2), and third-party carrier equipment (Racks 6 & 7), along with wall space allocated for cellular DAS equipment. The technical specifications include B-LINE 4-post racks (20" x 30" x 84"), 18-inch wide universal cable runways with vertical wire management systems, copper cable punchdown blocks, fire alarm panel space, and access control panels. Infrastructure elements include 4-inch wall sleeves for DAS and fire alarm systems across all three levels, ground busbars, electrical panels, and four underground conduits (four 4-inch and three 4-inch C conduits) running from existing and new vaults on site. The plans also indicate provisions for BMS control panels and dedicated 120-volt, 20-amp quad circuits positioned below cable trays as responsibilities of the general contractor.

The RFP process for this project was released on February 24, 2026, with questions and contract exceptions due by March 2, 2026, proposals due by March 9, 2026 at 5:00 PM, and an anticipated contract award date of April 7, 2026, with equipment required on-site by July 2026. The contractor must design and procure a complete DAS system achieving minimum 95 percent in-building coverage with signal strength better than -85 dBm downlink and greater than -95 dBm uplink, compatible with AT&T, Verizon, and T-Mobile/Sprint frequency bands while complying with NEC, local building codes, RF exposure rules, and seismic requirements. The contract includes a two-phase structure with Phase 1 encompassing design, engineering, shop drawings, and procurement, and Phase 2 covering installation, testing, commissioning, training, and warranty services. A minimum one-year warranty is required, covering all materials, workmanship, and performance including proactive monitoring and quarterly checks. The County of San Mateo's local business procurement preference ordinance under County Ordinance Code Chapter 2.89 may apply, and the contractor bears all costs including labor, materials, equipment, management, coordination, and travel, with a $20,000 owner contingency allowance available for authorized changes. Insurance requirements include $1,000,000 each for comprehensive general liability, motor vehicle liability, and professional liability, with prevailing wage and San Mateo County living wage compliance mandated.