reschecktm basics - energy codes · reschecktm basics pnnl-sa ... i014 . aia course #: ec16 -m03 ....
TRANSCRIPT
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REScheckTM Basics
1 PNNL-SA-116714
PAM COLE U.S. Department of Energy - Building Energy Codes Program AIA Provider #: I014 AIA Course #: EC16-M03 April 14, 2016
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Course Description
Basics of using the REScheck software, reviewing generated compliance reports, and the latest and greatest new features.
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Learning Objectives
1. Obtain an overview of the basic functions and how REScheck calculates compliance for the building envelope.
2. Be able to identify the construction specifications needed to complete a compliance calculation in the software.
3. Learn how to enter the building envelope components into the software.
4. Understand how the compliance reports are created and what they entail.
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Energy Code Compliance Tools
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Building Energy Codes Program
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www.energycodes.gov
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Building Energy Codes Program
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REScheck Page
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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
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Data Exchange
Building Energy Codes Program
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Walkthrough REScheck Steps
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Building Energy Codes Program
Select the appropriate code
Enter project information
Enter building components
Enter mechanical equipment (optional)
Requirements Tab
View/print/save
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Select the Appropriate Code
Applicable to your state/ jurisdiction (Code menu)
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Preferences
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Building Energy Codes Program
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Project Information
Project Location City/County
Project Type Single Family Multi Family 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 Addition or Alteration on Project screen Additions
Addition only Addition plus existing home
Alterations Exemptions may apply
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Building Energy Codes Program
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What is the Building Thermal Envelope?
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Entering Building Components
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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
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Building Energy Codes Program
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SHGCs and U-Factors
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Cavity vs. Continuous
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Foundations – what button to use
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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?
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Building Energy Codes Program
Basement Wall – >50% below grade
Below grade Basement wall Exterior Wall –
<50% below grade
Below grade Basement wall
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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 Requirements are for full depth of basement wall (to 10 ft); REScheck allows trade offs 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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Colors
Red
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Building Energy Codes Program
Green
Blue
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Screen Operations
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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
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
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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
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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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Reports
File View / Print Report Choices, choose any or all
Compliance Certificate Inspection Checklist Panel Certificate
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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
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Reports – Sample Compliance Certificate, con’t
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Building Energy Codes Program
Verify energy code, location, construction type, and conditioned
floor area
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Reports – Sample Compliance Certificate, con’t
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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
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Code Section #
Inspection Type
Value from Plans
Value from Field
Compliance
Building Energy Codes Program
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Panel Certificate
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AreaCalc
REScheck desktop Calculates building areas Areas can be transferred into REScheck
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Case Study – REScheck Software
Jones Residence
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Building 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
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
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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
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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 ireplaceBath
Crawlspace
CrawlspaceUnexcavated
Bedroom #4Bedroom #3
Family Room
Mech/ Storage
16' 0"
24' 0"
76' 0"
Concrete Patio
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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Basement Walls
“back” below grade basement wall (entire back wall is adjacent to crawlspace
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Basement Walls
“side” below-grade basement walls
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Floor Area
Crawlspace Area – 783 sf
Unexcavated
16' 0"
24' 0"
76' 0"
Crawlspace
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Crawlspace Wall Insulation
Example of an Insulated crawlspace wall =
- no foundation vents to the exterior
+ mechanically vented/conditioned
This case study does NOT have a conditioned crawlspace
52
Building Energy Codes Program
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Crawlspace Walls in REScheck
53 Building Energy Codes Program
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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
55 Building Energy Codes Program
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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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THANK YOU!
Pam Cole [email protected]
Building Energy Codes Program
www.energycodes.gov
BECP help desk http://www.energycodes.gov/resource-center/help-desk
59 Building Energy Codes Program