Longfellow Bridge Construction Project in Cambridge

Event Planning Guide

The chart below is supplied as a recommendation to special event coordinators and portable restroom contractors. Recommendations are based on the concept that each portable restroom provided will accommodate 200 separate uses.

To calculate the number of units needed:

  • Determine the approximate attendance by scanning the column marked in red.
  • Next select how long the event is scheduled to run which is marked toward the top of the chart under the title of Hours.
  • The cross point between hours and number of people will give you the base quantity needed, As an example, if the event is expected to draw 3000 people and will run for five hours, the chart indicates a need for 20 portable restrooms.(1 unit provides approximately 200 uses)

There are other considerations that require the expertise of a professional portable sanitation contractor.

Chart for calculating your portable restroom needs

Number of Hours for Event
People Attending12345678910
1-501111222222
50-1002222233333
100-2503333444666
250-5004444668888
500-1,0004567788899
2,00056912141618202325
3,000691216202426303438
4,0008131622253035404550
5,00012152025313844505663
6,00012152330384552606875
7,00012182635445361707988
8,000122030405060709090100
10,00015253850637588100113125