reschecktm basics...panel certificate 45 building energy codes program . applying rescheck software...
TRANSCRIPT
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REScheckTM Basics
1 PNNL-SA-116714
2016 Department of Energy National Energy Codes Conference
Building Energy Codes Program
DALE HORTON, NCAT
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Building Energy Codes Program
2
Energy Code Compliance Tools
Prescriptive UA Tradeoff Simulated
Performance
None REScheck REM/Rate REM/Design Energy Gauge
REScheck?
So
ftw
ar
e
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www.energycodes.gov
3
Building Energy Codes Program
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REScheck Page
4
Building Energy Codes Program
https://www.energycodes.gov/rescheck
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REScheck
Building Energy Codes Program
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Can exchange files between desktop and web
Log in to web
My Projects
6
Data Exchange
Building Energy Codes Program
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Walkthrough REScheck Steps
7
Building Energy Codes Program
2. Select
Code
3. Select
Compliance
Path
4. Enter
Project Info
1. Select
Preferences
5. Enter Building
Components
6. Enter
Mechanical
Equipment
7. Complete
Requirements
Tab
Optional
Save and Print Report
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Preferences
8
Building Energy Codes Program
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Select the Appropriate Code
Applicable to your state/ jurisdiction (Code menu)
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Project Information
Project Location
City/County
Project Type
Single Family/Duplex
Multi Family
Building Characteristics
New Construction
Addition
Alteration
Project Details
Optional
Get printed on reports
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Building Energy Codes Program
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Project Information – Helpful Hints
Multifamily if
All multifamily buildings three stories
or less in height above grade and
Contain three or more attached
dwelling units
Examples Apartments
Condominiums
Townhouses
Dormitories
Rowhouses
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Building Energy Codes Program
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Project Information – Helpful Hints
Select New Construction, Addition or Alteration
Additions
Addition only
Addition plus existing home
Alterations
Exemptions may apply
12
Building Energy Codes Program
Alteration - would enter only portions of thermal envelop that you are touching For example – only enter windows that you are changing, not other existing windows.
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What is the Building Thermal Envelope?
13
Building Energy Codes Program
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Entering Building Components
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Building Energy Codes Program
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Envelope Helpful Hints
Don’t have to use every button
Can group “like” components
Gross area (except slab-on-grade)
Gross wall area to include peripheral edges of floors
(area of band joist and subfloor between floors)
Use “Other” assembly as needed
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Building Energy Codes Program
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Envelope Helpful Hints, con’t
Fenestration ratings – U-factor and SHGC
Cavity R-value – used for insulation placed
between structural members
Continuous R-value – used for insulation that is
continuous across the structure (e.g., rigid
insulation)
After you’ve entered all building thermal envelope
components, hit Check Compliance
Look for fields with red text
If no compliance results, look for missing data
and make sure you’ve made an entry for
Building Use type
16
Building Energy Codes Program
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SHGCs and U-Factors
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Building Energy Codes Program
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Cavity vs. Continuous
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Building Energy Codes Program
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Foundations – what button to use
19
Building Energy Codes Program
• Basement is conditioned Basement
• Separates conditioned from unconditioned space Floor
• Crawl space is not vented to the outside and floor above is NOT insulated
Crawl Wall
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What’s a Basement Wall?
20
Building Energy Codes Program
Basement Wall 50% below grade
Above Grade Wall <50% below grade
Basement Wall 50% below grade
Above Grade Wall <50% below grade
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Basements Helpful Hints
Wall Height
from top of wall to basement floor
If not uniform, provide an average height
Depth Below Grade
Depth that the wall extends from finished,
outside grade surface to basement floor
If sloped or uneven, provide an average
depth below grade
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Building Energy Codes Program
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Basements Helpful Hints, con’t
Depth of Insulation
Measure from top of wall to where insulation stops
For a fully insulated wall, depth of insulation would
be equal to height of the wall
If you enter insulation depth of 0, program assumes no
insulation, regardless of values in the insulation fields
Continuous Insulation
Software assumes it’s exterior rigid
Cavity Insulation
Software assumes you’re furring out on the interior
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Building Energy Codes Program
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Basement Walls
Building Energy Codes Program
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Colors
Red
24
Building Energy Codes Program
Green
Blue
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Screen Operations
25
Building Energy Codes Program
Status Bar
Compliance Bar
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Compliance - UA
UA
U-factor x Area for each building
assembly
UA from building conforming to code
compared against your building UA
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Building Energy Codes Program
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Compliance – Performance Alternative
Simulated Performance alternative
Based on simulated performance of your building
compared to an equivalent code building
Requires additional inputs (over UA approach):
building orientation, minimum of four walls having
unique orientations, and a minimum of one roof and
floor
Check Compliance button
Performance alternative considers the whole building
energy performance, whereas UA trade-off method
considers only the thermal conductance of envelope
components
27
Building Energy Codes Program
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REScheck Performance Approach
April 5, 2016 Building Energy Codes Program
28
Limited performance approach
Does not represent the true above code performance
Not to be used for home energy ratings, energy efficiency tax credit calculations or other incentive programs
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REScheck Performance Approach
April 5, 2016 Building Energy Codes Program
29
Limited to building envelope No credit is provided for:
• Overhang projection factor • Air tightness of the building envelope • Sun rooms/passive solar characteristics • Mechanical ventilation effectiveness • Duct leakage • Detailed equipment performance characteristics
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REM/Rate Simulated Performance Report
Building Energy Codes Program
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REM/Rate Simulated Performance Report
Building Energy Codes Program
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Compliance Failing – Helpful Hints
Review building plans to ensure all
components are entered correctly
Confirm takeoffs (areas) are
correct
Confirm insulation values
Double check cavity vs.
continuous entries
Look at UA column (next slide)
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Building Energy Codes Program
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Compliance Failing – Helpful Hints, con’t
33 March 2016
Building Energy Codes Program
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Requirements Tab
Mandatory requirements
Air leakage
Building mechanical systems and equipment
Service water heating
Duct construction, insulation, testing
For each requirement, the user
Notes that a code requirement is
Met
Exempt
Does not apply
Notes how compliance for applicable requirements are documented
This information is shown on the report in the “Comments/ Assumptions”
column of the Inspection Checklist
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Building Energy Codes Program
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Reports
File View / Print Report
Choices, choose any or all
Compliance Certificate
Inspection Checklist
Panel Certificate
35
Building Energy Codes Program
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Reports
Implement Requirements tab
Inspection checklists set up by phase of
construction
Plan Review
Footing/Foundation
Rough-in
Final
36
Building Energy Codes Program
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Reports – Sample Compliance Certificate, con’t
37
Building Energy Codes Program
Verify energy code, location, construction type, and conditioned
floor area
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Reports – Sample Compliance Certificate, con’t
38
Verify Values are Consistent with
Plans
Verify Compliance Statement is Signed
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Envelope Sample Inspection Checklist
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Envelope Sample Inspection Checklist, con’t
44
Code
Section #
Inspection
Type
Value from
Plans
Value from
Field
Compliance
Building Energy Codes Program
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Panel Certificate
45
Building Energy Codes Program
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Applying REScheck Software
Jones Residence
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Define Building Thermal Envelope
Unexcavated
16' 0
"
24' 0
"
76' 0"
Crawlspace
Conditioned Basement
Conditioned Main Floor
Building Section
WD
BEDROOM #2DEN
LIVINGROOM
NOOK
KITCHEN
3 CAR GARAGE
DECK
MASTERBEDROOM
UTILITY
MSTRBATH
DININGROOM
FAMILYROOM
ENTRY
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Ceiling Area (adusted for vaulted ceilings)
Ceiling Area - 2415 sf
WD
BEDROOM #2DEN
LIVINGROOM
NOOK
KITCHEN
3 CAR GARAGE
DECK
MASTERBEDROOM
UTILITY
MSTRBATH
DININGROOM
FAMILYROOM
ENTRY
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Exterior Wall Areas
9’ Ceilings
9’ Ceilings 12’ Ceilings
9’ Exterior Walls – 2180 sf
North – 690 sf
South – 600 sf
East – 440 sf
West – 450 sf
12’ Exterior Walls – 689 sf
North – 221 sf
South – 234 sf
East – 52 sf
West – 182 sf
3’ knee walls (between 9’&12’ sections) – 153 sf
West – 69 sf
East – 84 sf
WD
BEDROOM #2DEN
LIVINGROOM
NOOK
KITCHEN
3 CAR GARAGE
DECK
MASTERBEDROOM
UTILITY
MSTRBATH
DININGROOM
FAMILYROOM
ENTRY
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Knee Wall Insulation
50 Building Energy Codes Program
9' ceilings 9' ceilings12' ceilings
knee wallknee wall
No, No… Never cut the batts too short
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Basement Walls – below grade
>50% below grade = below grade concrete basement wall
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Ways to Insulate Basement Walls
52 Building Energy Codes Program
Interior Studs w/batts
Exterior Rigid Foam
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Including Rim Joists in the Exterior Wall Area
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Above Grade Bsmt Walls (exterior wood) = 837 sf (93’ x 9’)
(entered as wood frame wall. not a basement wall)
Below Grade Bsmt Walls = 1044 sf
Side basement walls = 360 sf
West Wall – 144 sf
East Wall – 216 sf
Back basement wall = 684 sf (76’x9’)
3/0
linen
2/0 2/0
3' x 4' SHWR
2/6
storagehot water
f ir eplace
Bat h
Crawlspace
CrawlspaceUnexcavat ed
Bedroom #4
Bedroom #3
Family Room
Mech/ St orage
16' 0
"
24' 0
"76' 0"
Concret e Pat io
Basement Wall Areas
Above Grade
Bsmt Walls (exterior wood) – 837 sf (93 ln. ft. x 9’ height)
144 sf
684 sf
216 sf
North
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Floor Area
Crawlspace Area – 783 sf
Unexcavated
16' 0
"
24' 0
"
76' 0"
Crawlspace
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Slab Perimeter
Slab Perimeter – 93 linear feet
Line represents the slab edge to be calculated in linear feet
Unexcavated
16
' 0"
24
' 0"
76' 0"
Crawlspace
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Slabs in REScheck
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Slab Input Dimensions
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Crawlspace Walls
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Basement Wall Example 1 – Wood Knee Wall
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3’
1’
4’
R13
R5
Create Two Basement Components:
Depth Depth Wall Below of Height Grade Insul Kneewall 3’ 0’ 3’ Concrete 5’ 4’ 5’
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Walk-out Basement Wall – Example 2
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Example 2: Walk-Out Basement Assume an 8-ft. basement is to be built on a slope so that the front wall is 7 ft. below grade and the rear wall is totally above grade. The ground level along both side walls is sloped so that approximately 50% of each wall is below grade. The rear basement wall will be wood-frame construction with R-19 cavity insulation. The other three walls will be concrete walls with R-10 rigid insulation. All four walls will be fully insulated. Create one basement component for the front wall and enter the following information: Wall Height 8 ft. Depth Below Grade 7 ft. Depth of Insulation 8 ft. The two side walls are at least 50% below grade, so they are entered as a basement wall component. If they were less than 50% below grade, they would be entered as an above-grade wall component. Therefore, create a second basement wall component for the two side walls and enter the following information: Wall Height 8 ft. Depth Below Grade 4 ft. Depth of Insulation 8 ft. The rear wall is fully above grade and should be entered as an above-grade wall using the Wall button. Note that the basement floor along this wall should be considered a slab-on-grade component. Create a slab component using the Floor button and enter the length of the basement floor along this wall in the Gross Area or Slab Perimeter field.
Side walls 50% below grade with R-10 Insulation
8’ Concrete Basement Walls
1’
R-19 Frame Wall
Front Wall
Front Wall
Back Wall
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Walk-out Basement Wall - Example 2
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Example 2: Walk-Out Basement Assume an 8-ft. basement is to be built on a slope so that the front wall is 7 ft. below grade and the rear wall is totally above grade. The ground level along both side walls is sloped so that approximately 50% of each wall is below grade. The rear basement wall will be wood-frame construction with R-19 cavity insulation. The other three walls will be concrete walls with R-10 rigid insulation. All four walls will be fully insulated. Create one basement component for the front wall and enter the following information: Wall Height 8 ft. Depth Below Grade 7 ft. Depth of Insulation 8 ft. The two side walls are at least 50% below grade, so they are entered as a basement wall component. If they were less than 50% below grade, they would be entered as an above-grade wall component. Therefore, create a second basement wall component for the two side walls and enter the following information: Wall Height 8 ft. Depth Below Grade 4 ft. Depth of Insulation 8 ft. The rear wall is fully above grade and should be entered as an above-grade wall using the Wall button. Note that the basement floor along this wall should be considered a slab-on-grade component. Create a slab component using the Floor button and enter the length of the basement floor along this wall in the Gross Area or Slab Perimeter field.
Create Two Basement Components:
Depth Depth Wall Below of Height Grade Insul Front Wall 8’ 7’ 8’ Side Walls 8’ 4’ 8’
Create one above grade wall for back (walk-out) wall.
Create one slab-on-grade component with length of back wall as linear feet.
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Basement Wall Example 3
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Example 3: Below-Grade Exterior Insulation An 8-ft. high by 21-ft. wide foundation wall is 7 ft. below grade and is to be insulated using R-5 exterior rigid foam. The insulation will start at grade level and run down to the bottom of the foundation wall. There is 1 foot of uninsulated exposed above-grade wall. The wall has no openings. This wall is entered by creating two basement wall components. The first component will be used for entering the uninsulated above-grade portion of the wall. Click the Basement button and enter the following information: Wall Height 1 ft. Depth Below Grade 0 ft. Depth of Insulation 0 ft. The second component will be used for entering the insulated below-grade portion of the wall. Click the Basement button again and enter the following information: Wall Height 7 ft. Depth Below Grade 7 ft. Depth of Insulation 7 ft. After these components have been created, enter the gross area of each component and the R-value of the insulation used on the below-grade component.
Create Two Basement Components:
Depth Depth Wall Below of Height Grade Insul Uninsulated 1’ 0’ 0’ Insulated 7’ 7’ 7’ Areas and R-Values must also be entered.
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Insulation Levels
Roof/Ceiling
Walls (above and below grade)
Floor over vented crawl space
Slab-on-grade
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Window/ Door Area
North
South
East
West
Glass Doors <50% glass - 40 sf; U-factor = 0.50
North – 40 sf
Opaque Doors - 40 sf; U-factor = 0.50
South – 40 sf
Window Area - 533 sf
North – 369 sf
South – 149 sf
West – 15 sf
U-factor = 0.35
U-factor = 0.27
SHGC = .25
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