Air Make Up Units for Structural Steel Coating
Large paint booths, blast rooms and exhaust systems for structural steel can remove substantial air from a fabrication shop. Double D Mechanical installs, relocates and connects air make up units that help replace exhausted air, temper the finishing area and coordinate with booth controls.
Discuss your installationAir Balance for Large Booths
Structural steel booths can create strong exhaust demand because of their size and operating hours. Air make up planning should account for all connected fans, booth modes and nearby exhaust sources so the finishing area is not pulling uncontrolled air from doors or adjacent spaces.
Supply Air Without Spray Disruption
Replacement air should enter the area in a way that supports booth capture without blowing across freshly coated beams or operator spray paths. Duct discharge, diffuser style and unit location should be reviewed against booth openings, cranes and material staging.
Heated Air for Shop Conditions
Tempered air can help stabilize coating work when steel arrives from cooler storage areas or when outside air conditions affect the finishing space. Fuel or electrical service, controls, intake placement and service clearances should be planned with the building structure.
Control Signals and Interlocks
The air make up unit should respond with the exhaust equipment it supports. Start commands, pressure controls, fan proving, shutdown behavior and operator controls need to be coordinated before final wiring and commissioning.
Site Information to Collect
Useful information includes booth and exhaust fan data, roof or wall locations, ceiling height, crane travel, utility availability, preferred unit location and photos of the shop area where ductwork may run.
Frequently asked questions
Why is make up air important for structural steel booths?
Large booth exhaust can depressurize a shop if replacement air is not planned. That can create drafts, door pull and unstable spray conditions.
Where can an air make up unit be placed?
Placement depends on building structure, intake and discharge paths, service clearance, duct routing, utilities and the need to avoid cranes and material handling areas.
Can one unit support multiple exhaust systems?
It may be possible when total airflow, simultaneous operation, controls and duct layout are reviewed together.
What helps with an initial sizing discussion?
Fan data, booth dimensions, operating modes, current pressure concerns, utility information and photos of roof or wall areas are useful starting points.