KVCC Sustainable Agriculture Building
Kennebec Valley Community College- Sustainable Agriculture Lab Building
Walls and Roof
The ASHRAE building envelope trade-off option was used for the project. The general approach was use the insulation on the exterior of the envelope.
Subslab assembly
4" reinforced concrete slab, vapor retarder beneath entire slab, 2" rigid insulation
Subslab R-value
10.8
Slab edge R-value
10.8
Foundation wall assembly
Foundation wall is 1'- 1 1/2" thick and 5'-0" deep with 2" thick rigid insulation board on inside of wall.
Foundation wall R-value
12.4
Above grade wall assembly
There are 2 main types of wall assemblies:
1) fiber cement siding on furring strips at 16" O.C., 3" rigid insulation, 5/8" modified bituminous sheet air barrier, sheathing, 6" metal studs, 5/8" gypsum board interior.
2) face brick, 2" air space, 3" rigid insulation, 5/8" modified bituminous sheet air barrier, sheathing, 8" metal studs, 5/8" gypsum board interior
Above grade wall R-value
17.0
Flat attic assembly
Standing seam metal roof, self-adhered roof underlayment, roof sheathing, R-50 blown-in insulation, plastic sheet air barrier at bottom of truss, 5/8" gypsum board ceiling
Flat attic R-value
50.0
Cathedral ceiling assembly
standing seam metal roof, self-adhered roof underlayment, roof sheathing, 1 1/2" air space, structural insulated panel, plastic sheet air barrier, acoustical rated roof decking.
Cathedral ceiling R-value
44.0
Windows and Doors
Window Assembly:
Aluminum clad wood windows, low-e, triple pane with decorative stained glass - Marvin
Aluminum clad wood window - low-e, double pane - Pella
Fiberglass windows - low-e, double pane - Pella
Door Assembly:
Aluminum clad wood commercial doors - Low-e with argon - Pella
Aluminum clad wood sliding doors - Low-e with argon - Pella.
Average window U-factor
0.29
Solar Heat Gain Coefficient
0.30
Visible Light Transmittance
0.55
Door U-Factor
0.30
Door Area
207 sq ft
Mechanical Systems
Space heating - Manufacturer & Model
Trane WXHF series- example
Space heating - capacity
2 kW
Domestic hot water - Manufacturer & Model
Rheem ELD40
Domestic hot water - capacity
40 gal
Domestic hot water - efficiency
92 kW
Ventilation - Manufacturer & Model
Annexair ERP-I-05-EW-D-DR-WM24-SS
Lighting Manufacturer and Model
Axis 4' linear rececessed fluorescent- T8, Neoray 14' linear recessed fluorescent- T8, Portfolio 4" recessed downlight- LED, Metalux 4' industrial strip- T8, Mcgraw-Edison exterior wall pack- LED, Sure-Lite egress & exit signs- LED
Lighting Efficiency
Walls and Roof
The ASHRAE building envelope trade-off option was used for the project. The general approach was use the insulation on the exterior of the envelope.
| Subslab assembly |
4" reinforced concrete slab, vapor retarder beneath entire slab, 2" rigid insulation |
|---|---|
| Subslab R-value | 10.8 |
| Slab edge R-value | 10.8 |
| Foundation wall assembly |
Foundation wall is 1'- 1 1/2" thick and 5'-0" deep with 2" thick rigid insulation board on inside of wall. |
| Foundation wall R-value | 12.4 |
| Above grade wall assembly |
There are 2 main types of wall assemblies: |
| Above grade wall R-value | 17.0 |
| Flat attic assembly |
Standing seam metal roof, self-adhered roof underlayment, roof sheathing, R-50 blown-in insulation, plastic sheet air barrier at bottom of truss, 5/8" gypsum board ceiling |
| Flat attic R-value | 50.0 |
| Cathedral ceiling assembly |
standing seam metal roof, self-adhered roof underlayment, roof sheathing, 1 1/2" air space, structural insulated panel, plastic sheet air barrier, acoustical rated roof decking. |
| Cathedral ceiling R-value | 44.0 |
Windows and Doors
Window Assembly:
Aluminum clad wood windows, low-e, triple pane with decorative stained glass - Marvin
Aluminum clad wood window - low-e, double pane - Pella
Fiberglass windows - low-e, double pane - Pella
Door Assembly:
Aluminum clad wood commercial doors - Low-e with argon - Pella
Aluminum clad wood sliding doors - Low-e with argon - Pella.
| Average window U-factor | 0.29 |
|---|---|
| Solar Heat Gain Coefficient | 0.30 |
| Visible Light Transmittance | 0.55 |
| Door U-Factor | 0.30 |
| Door Area | 207 sq ft |
Mechanical Systems
| Space heating - Manufacturer & Model | Trane WXHF series- example |
|---|---|
| Space heating - capacity | 2 kW |
| Domestic hot water - Manufacturer & Model | Rheem ELD40 |
| Domestic hot water - capacity | 40 gal |
| Domestic hot water - efficiency | 92 kW |
| Ventilation - Manufacturer & Model | Annexair ERP-I-05-EW-D-DR-WM24-SS |
| Lighting Manufacturer and Model | Axis 4' linear rececessed fluorescent- T8, Neoray 14' linear recessed fluorescent- T8, Portfolio 4" recessed downlight- LED, Metalux 4' industrial strip- T8, Mcgraw-Edison exterior wall pack- LED, Sure-Lite egress & exit signs- LED |
| Lighting Efficiency |