Portable Classroom

BAIHP_1Main Category: Green Building Design

Category: Green Building

Entrant: University of Texas at Austin

Size: 18 x 48 x 12

Total Square Feet: 864







1. Thermal Comfort Strategy

Mixed Mode Natural Ventilation: The building has large operable windows that allow users to control airflow; its long rectangular shape-which cuts down on dead air spots, lends its self for natural ventilation. All the Heating and Cooling components are in conditioned spaced which allows for higher performance. The large open space lends its self for the selection of a mini split system with few individual rooms to heat and cool, the radiant heating system performs well with the structurally insulated floor.

2. Indoor Air Quality Strategy

Operable windows allow for user control of thermal confort, which allows for mechanical systems to be not used on days that the thermal comfort zone is reached naturally. The rainscreen allows more ventilation for the wall system, and allows the building to breathe-so no mold will build up, rather than siding that provides no air gap in the wall system. Ductless heating and cooling systems allow for

3. Daylighting Strategy

The building’s off-centered gable allows for maximum solar access for solar panels on the south side of the roof area. The front ‘porch’ is covered by solar panels and wood slats that filter any western sun light that may occur in the evenings, reducing solar gain. The main windows face north to catch the best kind of light for studying, a constant northern light.

4. Acoustic Strategy

The cork flooring is a sound absorbing material.

5. Energy Efficiency Strategy

-The use of the ScrewJack for the foundation provides a strong pier and beam foundation, only concrete piers touch the earth. -SIP construction has less waste since the panels are cut in a factory and then shipped to the site/factory for assembly. -Cork is a renewable resource.

6. Architectural Excellence

The building is designed to be transported via oversized truck, each module is 18’x48′ more than one building can be linked together. The layout is simple and compact with an efficient plan, that allows multiple configurations and the teacher to control access to the back room and bathroom area. -The exterior appearance is modernist yet hints at traditional styles, such as the iconic gable form. The off-centered ridge line on the gable allows for maximum solar access for solar panels.

7. Economic Practicality

The employment of SIPs can reduce the cost of fabrication and waste. The operation costs of the classroom can be reduced by integrating solar panels. All costs are included in the unit price.

8. Other

1.O Site start-up fees, permits and water and sewer tap fees $850

2.0 Site Prep $1150 3.0 Foundation $3000

4.0 Transportation $2000

5.0 Crane and set-up fees $1000 —————— Sub total $8000

Framing $4900

Metal Work $500

Windows $2000

Rainscreen $1700

Plumbing $1800

Electrical $2100

Low-voltage wiring $550

Roofing $1750

MECH $2150

Gyp board $1100

Doors $750

Tile $550

Painting $1600

Trim $750

Cabinets $1650

Flooring $2900

Hardware $300

Deck $1250

Appliances $3500

Misc $2700 —————— Sub total $34,500

Warranty fund, insurance, overhead and profit $6,500

Structural Insulated Panel upgrade $2,600

Solar hot water upgrade $2,400

Photovoltaic system upgrade (3.2 kW) $20,000  with Tax Incentive

Total: $89,000


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