note: E-W longitudinal building section through the SnS Barge cut at canon Y = 10.0 ft (mid-N-S, along the ridge axis), viewed looking NORTH. Shows the slab cross-section, the six walls intersected by the cut (W-perim, W10-RC, W24-CRIL, W38-ILHW, W50-HW-Mech, E-perim) at canon thickness with type-coded fills, the five rooms straddling Y=10 labelled along the floor line (Reception → Changeroom → Indoor Lounge → Hallway → Mechanical), the roof shown in section as a flat ridge band (the gable triangle is perpendicular to the view), bottom dimension chain stepping wall-to-wall (10/14/14/12/10 = 60), and a vertical dim chain right of the building covering slab (18"), wall (12'), gable rise (3') and total ridge height (15'). All numerics imported from src/floatsauna/canon.py.
