Evaporation Load / Dehu Demand
Estimated initial water load (gal and lb), first-24-hour removal target.
Example
You enter
- Affected floor area (ft2) 800
- Water class 3
- Load factor (gal/ft2, blank = class default) 0.08
- First-24-hour fraction (0-1) 0.4
- Dehumidifier derating factor (0-1) 0.5
You get
- Initial water load 64
- Load (lb) 534.08
Checked against published worked examples from: IICRC S500 water-class evaporation-load framework.
Details, formula, and sources
ScopeEstimated initial water load (gal and lb), first-24-hour removal target, and suggested AHAM dehumidifier pints from affected area, water class, and editable per-class load factors.
Formula or tableload_gal = area * load_factor(class); lb = gal * 8.345; first-24h pints = load_gal * 8 * fraction; suggested AHAM pints = target / derating.
Source and editionPer the IICRC S500 water-class framework and evaporation-load drying principle, by name (not reproduced); per-class load factors are editable field defaults.
Free accessIICRC S500 governs; load factors are field estimates the user tunes to the standard and the job.
What governsEstimate. AHJ and licensed professional govern.
API field namesarea_ft2, water_class, load_factor, first24_fraction, derating, load_gal, load_lb
- Per-class load factor editable default gal/ft2 by water class; user tunes to the jobIICRC S500