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Green Trailer
When no one could tell precisely how much it cost to run a construction trailer, Boldt formed a team to create a "green" prototype trailer — an environmentally friendly, cost-effective one.
After gutting a standard 72-foot long trailer, the team rebuilt it with materials that represented sustainability and energy efficiency. The "green" trailer boasts of these energy-saving features:
- The wall insulation R-value was increased from 13.52 up to 25.83 by adding 2" of rigid insulation and 3/4" of wheat board.
- The roof's R-value went from 10.03 up to 28.41 by using a spray insulation product.
- The door and window U-value went from .823 to 338 by replacing them with higher efficiency products.
- New energy efficient lights and occupancy sensors were installed.
- A "light pipe" was installed to bring natural light in to the trailer interior.
By improving the efficiency of the trailer envelope, Boldt was able to reduce heating, cooling and electrical costs:
- Heating BTU's were reduced from 81,970 to 46,947.
- Tons of cooling required were down from 2.6 to 1.7.
- Electrical needs were reduced from 800 watts down to 520 watts.*
The green trailer consumes half the energy of a normal construction trailer and provides a more pleasant environment for those who work in it.
*Energy savings calculations in the Boldt Green Trailer were done using ASHREA weather data standards for the Green Bay, Wisconsin area.
Click here to return to the Sustainability page.