Industry Glossary
Key terms for office trailer support equipment, site logistics, and compliance.
C
Cam-Lock Fitting
Quick-connect coupling for water and waste hoses. Allows tool-free connection. Standard on Water Box and Waste Box discharge ports.
Complete Box
Combined fresh water supply (270 gal) and waste holding (330 gal) in a single insulated, heated box placed by forklift. Eliminates need for site plumbing.
Containment Berm
Portable secondary containment system for generators and fuel tanks. EPA SPCC compliant. Catches fuel spills and prevents ground contamination.
D
Daisy-Chain
Linking up to 3 Water Boxes or 3 Waste Boxes through cam lock fittings so they work as one system (1,980 gallons). Chained Water Boxes can feed several trailers at once. Chained Waste Boxes hold three times the waste of one.
E
EPA SPCC
Environmental Protection Agency Spill Prevention, Control, and Countermeasure regulations. Requires secondary containment for fuel and oil storage above certain thresholds.
G
Generator Sizing
Matching generator output (kW) to site electrical load. Single office trailers typically need 20-25 kW; multi-trailer sites need 30-40 kW; full compounds need 50+ kW.
Gray Water
Wastewater from sinks, showers, and non-toilet drains. Held in onboard tanks and pumped during service visits.
I
IBC Tote
Intermediate Bulk Container. 275-330 gallon tank in a metal cage. Often used on its own as an open water tote. In a Water Box, Waste Box, or Complete Box the tanks sit inside an insulated, heated enclosure.
O
OSHA 29 CFR 1926.51
Occupational Safety and Health Administration regulation covering sanitation requirements on construction sites including hand washing, restroom, and shower access.
P
PTZ Camera
Pan-Tilt-Zoom camera. Used on solar surveillance trailers for adjustable, wide-coverage site monitoring.
Pump-Out
Emptying waste holding tanks using a vacuum truck. Included in regular service visits.
S
Shore Power
External electrical power supplied to trailer equipment from a building, power distribution panel, or generator.
Sound-Attenuated
Generator enclosure designed to reduce noise output for site compliance and worker comfort.
T
TAG4
Four-station portable hand washing unit with hot/cold water, foot pumps, and integrated soap/towel dispensers.
W
Waste Box
660 gallons of waste holding inside an insulated, heated box. Dual sewage pumps, high-level alarms, 2-inch cam lock pump-out port.
Water Box
660 gallons of fresh water inside an insulated, heated box. Built-in 12V pump with pressure tank, heated hose connection to the trailer.
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