Issue link: http://psai.uberflip.com/i/1084319
2019 INDUSTRY RESOURCE DIRECTORY 56 PSAI STANDARDS FOR SPECIAL EVENTS This information was then used to create a mathematical formula that takes into account the following variables: • Size of crowd overall and at peak periods • Gender composition of the crowd • Length of the event • Queuing behavior The PSAI intends to reissue an updated version of the Missouri Study in 2019 and to introduce a web-based application that will allow PROs and event planners to more precisely estimate the optimal number of units for given scenarios. Until that occurs, this table provides general guidance on planning the minimum number of units required for special events. It assumes: • A 50/50 mix of men and women • No pumping service is provided • Each guest will use the restroom once every four hours If it will be particularly warm (80ºF or higher), or alcohol will be served, increase these numbers by 20 to 30 percent. Also add more units if the event will tend to have a lot of people needing to use the facilities at approximately the same time rather than spaced evenly throughout the day. Don't forget to include the number of volunteers, security people, and vendors who will use the facilities, along with the guests/attendees. Refer to page 66 for information on the required breakdown between standard and ADA-compliant units. In the late 1980s the PSAI and the University of Missouri collaborated on an extensive study to determine the number of portable toilets required on special event sites. The process included field work to determine the time taken by men and women to use the facility and their likelihood of using the portable restrooms under various conditions. Minimum Number of Hand Wash Stations 1 2 3 4 1 additional for each 10 1–10 11–20 21–30 31–40 Over 40 NUMBER OF TOILET FACILITIES ONE UNIT PROVIDES APPROXIMATELY 200 USES HAND WASH STATIONS REQUIRED * 1 hr 2 hr 3 hr 4 hr 5 hr 6 hr 7 hr 8 hr 9 hr 10 hr 1-50 1 1 1 1 2 2 2 2 2 2 100 2 2 2 2 2 3 3 3 3 3 250 2 2 2 2 3 3 3 3 3 3 500 2 4 4 5 6 7 9 9 10 12 1,000 4 6 8 8 9 9 11 12 13 13 2,000 5 6 9 12 14 16 18 20 23 25 3,000 6 9 12 16 20 24 26 30 34 38 4,000 8 13 16 22 25 30 35 40 45 50 5,000 12 15 20 25 31 38 44 50 56 63 10,000 15 25 38 50 63 55 88 100 113 125 15,000 20 38 56 75 94 113 131 150 169 188 20,000 25 50 75 100 125 150 175 200 225 250 25,000 38 69 99 130 160 191 221 252 282 313 *For the purpose of this standard, the required number of hand wash stations are equipped with a minimum of one faucet. Better worksites. Better weekends. Better world. EXCLUSIVE MEMBERS-ONLY CONTENT REDACTED Join us now at www.psai.org for access to this valuable information.