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Dispensary counter and styling stations in the Tolles cosmetology lab
Career Tech CentersCentral OhioColumbusTOP-C purple wordmark logo for The Ohio Purchasing Council cooperative purchasing program

Tolles Career & Technical Center Cosmology Renovation 2023

The cosmetology program at Tolles Career & Technical Center in Plain City works in a rebuilt 4,878-square-foot salon suite: 51 cut stations with mirrors, nine manicure stations, six hair-washing stations, pedicure and facial areas, new vinyl plank flooring, ceilings, dimmable LED lighting, laundry and new exhaust. Prodigy provided the architectural and engineering design, the permitting and the construction, including at least one circuit for every cut station and the plumbing behind the suite. Tolles bought it pre-bid through The Ohio Purchasing Council.

Cosmetology is a licensure program. Students at Tolles Career & Technical Center in Plain City log hours at real stations on real clients, which makes the lab less a classroom than a small salon operating inside a school building. The suite it occupied — 4,878 square feet across a classroom, an IT room, the lab, a pedicure area and a facial area — had been laid out for an earlier version of the program.

The renovation reorganized the suite and rebuilt it from the slab up, with Prodigy providing the architectural and engineering design and permitting on a pre-bid Ohio Purchasing Council contract. Walls came down where the new plan required, the concrete floor was repaired in their footprints, and doors were returned to the district. Carpet and tile gave way to 20-mil wear-layer vinyl plank. Ceiling grid and pads were replaced in the classroom, IT room and lab, with the pads in the pedicure and facial rooms replaced to match. Troffers became LED backlit panels with occupancy controls and dimmers, walls and existing frames were painted, and the PA and intercom moved into the new ceiling.

What the room is for is its station count: casework for 51 cut stations, each with a mirror, and nine manicure stations with built-in drawers, plus 51 cut-station chairs and 18 manicure chairs. Existing circuits stay where cut stations stay, and the new layout gets a minimum of one circuit per cut station. Six hair-washing stations and two washers and dryers were plumbed new, the appliances installed, and the hair interceptor serving the suite replaced. A new exhaust fan serves the expanded area and reports its status back to the building's existing control system.

Row of styling stations down the renovated Tolles salon floor
Cosmetology lab with styling stations, mirrors and shampoo bowls at Tolles
Esthetics workstations and dispensary cabinetry at Tolles
Manicure counters and stools in the Tolles cosmetology lab
Mirrored styling wall and chairs in the Tolles cosmetology lab
Reception seating and storage at the Tolles cosmetology program

Technical Discussion

One circuit per chair

A cosmetology lab is a room full of hair dryers, and a hair dryer is one of the largest loads a receptacle ever sees. The electrical rule written into this renovation is short: reuse existing circuits where a cut station stays put, and give every new cut station at least one circuit of its own. There are 51 cut stations.

Bar chart of current on a 20-amp circuit: 20 amps rated, 16 amps usable for a continuous load, 15 to 17 amps for a professional hair dryer, and about 1.5 amps for a flat iron.
Figure 1 — A single dryer uses nearly all of a circuit, which is why the lab has at least one circuit per cut station.

Why one dryer fills a circuit

A professional dryer draws 1,800 to 2,000 watts, which at 120 volts is 15 to 17 amps. A standard 20-amp circuit is limited to 16 amps for a load that runs for more than a few minutes. One dryer uses nearly all of it. Two chairs sharing a circuit trip the breaker the first time both students dry at once, and a working salon has every chair drying at once at the end of every class. Flat irons and clippers are small by comparison, a few hundred watts, but they sit on the same circuit as the dryer.

Where the power is not

The nine manicure stations were deliberately left unpowered, since nail lamps and files draw little and the stations are casework that may move. That is worth confirming against how a program teaches before the floor closes, because adding power to a station later means opening a finished floor.

The wet side

Six hair-washing stations, two washers and two dryers each need supply, waste and vent, and the existing suite had none of that where the new plan put them. The floor was trenched, the lines run and the concrete replaced, and the hair interceptor was replaced while the floor was open, because wash stations send hair and product into a waste line that tolerates neither. A new exhaust fan serves the expanded area and reports its status to the building control system.

The rest

The 4,878-square-foot suite received 20-mil wear-layer vinyl plank, new ceilings, backlit LED panels on dimmers, and casework for 51 cut stations with mirrors and nine manicure stations with drawers.

For any salon lab, count the chairs, count the circuits, and make sure the second number is at least as large as the first.

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