Restroom trailer leveling: what if the ground isn't perfectly flat?

Question

I'm setting up a six-stall restroom trailer for a weekend music festival that expects about 3000 people a day. The site is a grassy field with a noticeable slope, maybe an 8-inch drop from one end to the other over 40 feet. The delivery truck can get right to the spot, but I know leveling this thing is critical for the toilets and sinks to drain right and the doors to close. I've got my jacks and wood blocks ready, but I'm wondering about the best approach for a multi-day event on uneven ground. Do you shim the low side until the trailer is perfectly level, or is a slight tilt acceptable? How do you secure it so it doesn't shift if the ground gets soft after rain?

Jules T. · Answer

A restroom trailer must be perfectly level on firm ground for proper drainage and door operation; a slight tilt is not acceptable. For your 40-foot trailer with an 8-inch slope, start by positioning it with the door end facing the high ground if possible to reduce the amount of shimming needed. Use the trailer's built-in jacks and heavy-duty wood blocks or composite leveling pads under the low side, stacking them securely to eliminate any gaps. Check the level with a tool across both the length and width, adjusting until the bubble is centered. To prevent shifting on soft ground after rain, drive stakes or anchors into the ground at all four corners and use ratchet straps to tie down the trailer frame, not the body. For a three-day festival with 3000 attendees daily, a six-stall restroom trailer is a good start, but consider adding more units or portable toilets if alcohol is served or queues form. Service frequency for a restroom trailer at a high-use event may need to be daily to keep tanks from filling and maintain cleanliness.

Restroom trailer leveling: what if the ground isn't perfectly flat?

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