BUILDING ENVELOPE: MINIMUM ENERGY PERFORMANCE Kaitlyn Molner Kayla Fieldhouse 09/18/2013 Environmental Systems II
Objective: Establish the minimum level of energy efficiency for the proposed building envelope to reduce environmental and economic impacts associated with excessive energy use.
Foundation Assembly
Exterior Wall Assembly
4.5” slab-on-grade
8” CMU partially grouted
3 ft. perimeter vertical insulation (2”) R-10
2” continuous rigid insulation R-10 2” air space brick veneer
Roof Assembly
Glass Door
Window
Flat roof
Clear glazing
Double pane glazing
4� above deck insulation (R-20)
U-factor: 0.8 U-factor: 0.45 SHGC:
Precast parapet
Metal Insulated Door U-factor: 0.7
0.4 SHGC:
0.4
Exterior Elevations
North Elevation
South Elevation 0
9’
18’
36’
0
9’
18’
Exterior Wall (including windows & doors) = 900 SF
Exterior Wall (including windows & doors) = 900 SF
Glazing = windows 1309 SF; doors 42 SF
Glazing = windows 1582 SF; doors 42 SF
36’
Exterior Elevations
East Elevation
West Elevation 0
9’
18’
36’
0
9’
18’
Exterior Wall (including windows & doors) = 900 SF
Exterior Wall (including windows & doors) = 900 SF
Glazing = windows 1287 SF
Glazing = windows 2051 SF
36’
COMcheck Initial Report
COMcheck Revised Report
COMcheck Software Version 3.9.2
COMcheck Software Version 3.9.2
Envelope Compliance Certificate
Envelope Compliance Certificate
90.1 (2007) Standard
90.1 (2007) Standard
Section 1: Project Information
Section 1: Project Information
Project Type: New Construction Project Title :
Project Type: New Construction Project Title :
Construction Site:
Owner/Agent:
Designer/Contractor:
Construction Site:
Section 2: General Information Building Location (for weather data): Climate Zone: Building Type for Envelope Requirements: Vertical Glazing / Wall Area Pct.:
Building Location (for weather data): Climate Zone: Building Type for Envelope Requirements: Vertical Glazing / Wall Area Pct.:
Floor Area 59616
Indianapolis, Indiana 5a Nonresidential 18%
Building Type Office
Floor Area 59616
Section 3: Envelope Assemblies
Section 3: Envelope Assemblies
Envelope FAILS: Design 1% worse than code.
Envelope PASSES: Design 2% better than code.
Climate-Specific Requirements: Component Name/Description Exterior Wall 1: Concrete Block:8", Partially Grouted, Cells Empty,Normal Density , Furring: Metal Window 1: Metal Frame:Double Pane, Clear, SHGC 0.40 Door 1: Glass (> 50% glazing):Metal Frame, Clear, Entrance Door, SHGC 0.40 Door 2: Insulated Metal, Swinging Roof 1: Insulation Entirely Above Deck Floor 1: Slab-On-Grade:Unheated, Vertical 2 ft.
Climate-Specific Requirements: Gross Area or Perimeter 36000
Cavity R-Value
Cont. R-Value
Proposed U-Factor
Budget U-Factor(a)
0.0
10.0
0.076
0.090
5860 84
-----
-----
0.450 0.800
0.550 0.800
21 11664 432
-------
--10.0 5.0
0.700 0.093 ---
0.700 0.048 ---
(a) Budget U-factors are used for software baseline calculations ONLY, and are not code requirements.
Improvements
Designer/Contractor:
Section 2: General Information
Indianapolis, Indiana 5a Nonresidential 17%
Building Type Office
Owner/Agent:
Component Name/Description Exterior Wall 1: Concrete Block:8", Partially Grouted, Cells Empty,Normal Density , Furring: Metal Window 1: Metal Frame:Double Pane, Clear, SHGC 0.40 Door 1: Glass (> 50% glazing):Metal Frame, Clear, Entrance Door, SHGC 0.40 Door 2: Insulated Metal, Swinging Roof 1: Insulation Entirely Above Deck Floor 1: Slab-On-Grade:Unheated, Vertical 3 ft.
Gross Area or Perimeter 36000
Cavity R-Value
Cont. R-Value
Proposed U-Factor
Budget U-Factor(a)
0.0
10.0
0.076
0.090
6229 84
-----
-----
0.450 0.800
0.550 0.800
21 11664 432
-------
--20.0 10.0
0.700 0.048 ---
0.700 0.048 ---
(a) Budget U-factors are used for software baseline calculations ONLY, and are not code requirements.
Section 4: Compliance Statement Compliance Statement: The proposed envelope design represented in this document is consistent with the building plans, specifications and other calculations submitted with this permit application. The proposed envelope system has been designed to meet the 90.1 (2007) Standard requirements in COMcheck Version 3.9.2 and to comply with the mandatory requirements in the Requirements Checklist.
The initial COMcheck report was 1% worse than code. To meet ASHRAE 90.1 (2007) standards, the 2� above deck roof insulation was increased to 4 inches, resulting in 2% better than code envelope energy Name - Title efficiency. Signature Date