Unit ratioRule of thumb for toilets per people or workers.Also called: porta potty ratio, restroom countDefinitionUnit ratio is the sizing shortcut rental companies use. Examples: about one unit per ten construction workers, or about one per fifty guests at a short event. Alcohol, heat, and long run times raise the count.Related termsEvent pad: Clustered bank of porta potties at an event.Construction stop: Job-site rental location that stays for weeks or months.Peak load: Highest restroom demand during an event or shift.Related guidesHow Many Porta Potties Do I Need? Construction & Event Sizing GuideOSHA Portable Toilet Requirements for Construction Sites