Cosmetology Lab Redesign Shane A. Semple - 25-4/5/2005
Design Concept: The Cosmetology Lab is a space that will be used for teaching students the trades of cutting hair, applying make-up, and doing manicures. The space will also be open to the public for people who want to get an inexpensive hair cut or makeover. First and foremost, this space is a learning laboratory. As such, the main goal of the lighting should be functionality, and to provide the best lighting system to aid the student s learning. However; the space is also a retail environment, which leads to the necessity of an attractive lighting system that keeps costumers pleased with their experience. This space also provided an opportunity to add daylight to the school. Daylight can save the school money in energy usage costs and is obviously very important for any LEED rated building. In the original design, there is one 6 X5 window at a height of 7 above finished floor in the northeast wall. The long side of the space, which faces southeast, had no windows. Addition of daylight will aid in the overall concept of having an efficient and natural feeling lighting system. This design concept led to this final design: Recessed Linear Fluorescent fixtures used for general lighting. Linear Fluorescent fixtures recessed vertically into the haircut stations to provide facial lighting for the patrons. Only overhead lighting was present in the original design which would likely cause socket shadows on the faces of people getting makeovers and hair cuts. The addition of frontal lighting will fill in those shadows and make faces more attractive. Addition of a clerestory the length of the southeast side of the space. Skylight additions were considered, but due to the cluttered ceiling plenum, they would not be possible in this space. An overhang will be constructed on the exterior of the building to block direct sunlight for the majority of the time the space is in use, and vertical blinds will be provided to block any unwanted direct sunlight. The vertical blinds will utilize a pearl linen sun screen fabric, with 5% openness. The blinds and fabric will be provided by Lutron. Design Criteria and Goals: The following design criteria are taken from the IESNA handbook, as well as the ideas of the designer. Facial Modeling Extremely important that customers looking in mirrors are not poorly illuminated. Color Appearance and Contrast CRI at least 80. Use of makeup and hair dye leads to necessity of excellent color rendering. Shane A. Semple - 26-4/5/2005
Daylight Integration Provide a dimming system that works with the level of daylight. Horizontal and Vertical Illumination: 50 fc and 30 fc respectively. ASHRAE 90.1 Allowance: 2.1 W/sq. ft Goal Power Density: 1.5 W/sq. ft. Lighting Equipment: (Please refer to appendix for product cut sheets) Luminaires Lamps Fixture Type Number Manufacturer Catalog # CRI CCT Initial Lumens Lumen Maintenance G 4' T5 HO 1 Sylvania FP54830HOECO 82 3000 4450 0.93 H 4-Pin CF 1 Sylvania FP28830ECO 82 3000 2600 0.93 Ballasts Fixture Type Lamps Manufacturer Catalog # Input Watts G Fluorescent Dimming H Fluorescent Dimming Ballast Factor Power Factor 1 Advance VZT-154 13/63 0.03/1 0.98 2 Lutron ECO-T528-277-2?/69 0.1/1 >0.95 Light Loss Factors Fixture BF Maintenance Cleaning RSDD LDD LLD Total LLF Category Interval G 1 V Clean-12 Mo. 0.97 0.88 0.93 0.79 H 1 V Clean-12 Mo. 0.97 0.88 0.93 0.79 Shane A. Semple - 27-4/5/2005
Lighting Plan: Shane A. Semple - 28-4/5/2005
New Wall Elevation: New Wall Section: Shane A. Semple - 29-4/5/2005
The angle of 46 degrees was chosen for the overhang based on the angle of the sun in Newark, Ohio on March 21 at noon. Panelboard Data: All fixtures will be connected to circuit LPC-12, which is currently used only for luminaires in this space. Hatched fixtures will be wired with emergency ballasts in case of outages. In addition to the luminaires, the vertical blinds will require power. They will be fed by the 208/120 V circuit RPC2-35, which is currently a spare. The total load will be under 2 amps Circuit AWG Breaker Load Size (KW) LPC-12 #12 20 3.6 Circuit AWG Breaker Load Size (KW) RPC2-35 #12 20 0.2 Power Density: Floor Area = 3015 ft 2 Fixture G = 30 Ballasts x 63 W/Ballast Fixture H = 25 Ballasts x 69 W/Ballast Total = 3615 W = 1890 W = 1725 W Power Density = 3615 W/3015 ft 2 = 1.2 W/ ft 2 << 1.5 W/ft 2 This is roughly 40% below the ASHRAE 90.1 1999 allowance of 2.1 W/ft 2 Shane A. Semple - 30-4/5/2005
Calculations: All grids except the desk grid are placed at 4 AFF, to show illumination on top of the heads of people getting their hair cut. This will essentially be the working plane for a lab of this type. Shane A. Semple - 31-4/5/2005