Design Blueprint: Arid Coastal Fog Collector Panel — Build Specification Derived from the Droplet-Capture Fog Collector Paper

DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. A complete build specification for a fog water harvesting panel: a 40 m2 double-layer mesh panel (10 m x 4 m) of 0.3 mm fibre at total shade coefficient 0.50, each layer at shade 0.293 with pitch 1.886 mm and opening 1.586 mm, giving a total collection efficiency of 0.3213. Derived from the source paper: https://doi.org/10.5281/zenodo.24109230. For the stated arid coastal fog climate class (200 fog days per year, 8 fog hours per day), the panel delivers 555.2 L per fog day and 111,041 L per season in the central liquid water class (0.3 g/m3), against 5,100 L per year for a rain roof of the same 40 m2 at the same site — a ratio of 21.77, reversing at sites with reliable rain and infrequent fog. The blueprint derives the full build from the source figures: 84,855 m of fibre across both layers in six bay-sized sheets, four guyed posts of 100 x 100 x 6 mm square hollow section totalling 389.6 kg of steel at a 35 m/s design gust (total wind force 30.01 kN, guy tension 6.37 kN per cable), 2.3 m3 of footing and anchor concrete, a 10 m collection gutter sized above a derived peak mean rate of 189.1 L/h, and a reference storage tank of 1,665.6 L working volume (three central fog days). It gives dimensions and layout, a bill of materials in generic specification classes, an assembly sequence including orientation to the fog-bearing wind, the operating envelope and reversal conditions, critical fits tied to the source figures (as-built shade verified by fibre count against the 0.45-0.55 broad-optimum band), failure modes and mitigations, a condition-based maintenance schedule, and the measurements a first build must make. Nothing has been built or measured; every derived quantity is reproducible from the accompanying compute.py.