East Wing Air Handler 3 Replacement

The project involves the design, engineering, and construction of a new roof‑mounted air‑handling unit (AH‑3) for the East Wing of Sonoma Valley Hospital. Structural calculations verify seismic compliance for the new equipment and associated support walls, while addenda clarify HVAC insulation, ductwork, and roofing requirements. Bidders must demonstrate Class B licensing, submit detailed shop drawings, and coordinate a mandatory site walk. • Replace the existing rooftop air‑handler with a new 8,870 lb AH‑3 unit, including structural support and seismic anchorage. • Perform HVAC insulation, duct fabrication, and coating‑foamed roofing per updated specifications (Section 07 57 00). • Provide seismic, masonry, and steel design documentation (RISA‑3D, Anchor Designer) and comply with CBC/ASCE 7‑16 requirements. • Follow mandatory job walk on March 12 2026 and acknowledge receipt of three addenda (structural calculations, spec revisions, roofing contractor). • Submit a bid by April 10 2026, meeting all licensing (Class B) and technical requirements.