The program's baseline commercial project — the standard chiller/boiler-plant-to-AHU-to-VAV-to-zone architecture that every later commercial and institutional project in this program deviates from in one specific, named way.
The project brief: a 5-story, roughly 120,000 sq ft speculative office building served by a central plant of two 200-ton chillers and two 1,750 MBH condensing boilers, feeding five floor-by-floor air handling units and 40 VAV boxes with hot-water reheat. This module walks the full load characterization behind a 400-ton, 300 sq ft/ton block estimate, two full worked calculations — the total building cooling/heating load and the chilled water flow rate and pipe sizing check — and the VAV reheat coil sizing logic behind zone-level comfort control.
It closes by naming, explicitly, how this project's five-layer distribution chain is the exact baseline the school, hospital, hotel, warehouse, manufacturing plant, and data center projects later in this program each keep intact while deviating from in one specific, named way. The full worked numbers, bill of materials, and design reasoning are part of the unlocked module below.