aia+2030 the building skin: spaigr stephen r. lee, aia, leed ap professor & head | carnegie...
TRANSCRIPT
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AIA+2030The Building Skin: SPAIGR
Stephen R. Lee, AIA, LEED APProfessor & Head | Carnegie Mellon School of Architecture
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
References
Ron Brand: Architectural Details For Insulated BuildingsJoseph Lstiburek: BSD-106 Understanding Vapor BarriersEd Allen: Fundamentals of Building Construction & Architectural Detailing
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Requirements for Building Enclosures1
Control heat flowControl airflow Control rain
penetration Control water vapor
flow Control solar
radiationControl noise
Control fireProvide strength &
rigidityBe durableBe aesthetically
pleasingBe economical
1) Ron Brand: Architectural Details For Insulated Buildings
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Control heat flow
Insulation, insulation, insulation......
actually outsulation is a much better way to think of it
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Control airflow
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Control airflow3
3) Ed Allen: Fundamentals of Building Construction
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Control rain penetration
2) Ed Allen: Fundamentals of Building Construction
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Joe Lstiburek's Rules2
The fundamental principle of control of water in the liquid form is to drain it out if it gets in
The fundamental principle of control of water in the solid form is to not let it get solid and if it does – give it space or if it is solid not let it get liquid and if it does drain it away before it can get solid again.
2) Joseph Lstiburek: BSD-106 Understanding Vapor Barriers
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Control water vapor flow
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Control water vapor flow
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Control water vapor flow
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Joe Lstiburek's Rules2
The fundamental principle of control of water in the vapor form is to keep it out and to let it out if it gets in.
2) Joseph Lstiburek: BSD-106 Understanding Vapor Barriers
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Vapor Retarder2
Vapor Retarder*: The element that is designed and installed in an assembly to retard the movement of water by vapor diffusion.
Class I Vapor Retarder: 0.1 perm or less
Class II Vapor Retarder: 1.0 perm or less and greater than 0.1 perm
Class III Vapor Retarder10 perm or less and greater than 1.0 perm
* taken somewhat from ASHRAE Fundamentals 2001, Chapter 23.
2) Joseph Lstiburek: BSD-106 Understanding Vapor Barriers
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Vapor Barrier2
So, what is a Vapor Barrier? It is a Class I vapor retarder (0.1 perm or less).
2) Joseph Lstiburek: BSD-106 Understanding Vapor Barriers
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Categories of Permeability2
Vapor impermeable0.1 perm or less
Vapor semi-impermeable1.0 perm or less and greater than 0.1 perm
Vapor semi-permeable:10 perms or less and greater than 1.0 perm
Vapor permeable:10 perms or greater
2) Joseph Lstiburek: BSD-106 Understanding Vapor Barriers
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Joe Lstiburek's Principles2
Avoidance of using vapor barriers where vapor retarders will provide satisfactory performance.
Avoidance of using vapor retarders where vapor permeable materials will provide satisfactory performance. Thereby encouraging drying mechanisms over wetting prevention mechanisms.
Avoidance of the installation of vapor barriers on both sides of assemblies – i.e. “double vapor barriers” in order to facilitate assembly drying in at least one direction.
Avoidance of the installation of vapor barriers such as polyethylene vapor barriers, foil faced batt insulation & reflective radiant barrier foil insulation on the interior of air-conditioned assemblies.
Avoidance of the installation of vinyl wall coverings on the inside of air-conditioned assemblies.
Enclosures are ventilated meeting ASHRAE Standard 62.2 or 62.1
2) Joseph Lstiburek: BSD-106 Understanding Vapor Barriers
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Ron Brand's Rules
1) Enclose the building in a continuous air barrier
2) Provide continuous support (panel) for the air barrier against when loads begin
3) Ensure that the air barrier is flexible joints where movement may occur begin
1) Ron Brand: Architectural Details For Insulated Buildings
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Ron Brand's Rules
4) Provide continuous insulation to keep the air barrier warm and to conserve energy in the building
5) Keep the insulation tight to the air barrier
6) Protect the insulation with the rain screen/sunscreen supported out from the structure in a way that does not penetrate the insulation with excessive bridges
1) Ron Brand: Architectural Details For Insulated Buildings
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Ron Brand's Rules
7) Provide enough open space (gap) for drainage and construction clearances between the rain screen and the insulation
8) Drain the wall cavity to the outside
1) Ron Brand: Architectural Details For Insulated Buildings
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Concrete Wall & Plan Sections
Ed Allen: Architectural Detailing
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Steve Lee's Mnenomic: SPAIGR
S – structureP – panelA – air barrier (vapor barrier, drainage plane)I – insulationG – gapR – rainscreen
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Spandrel Section:Complete
1) Ron Brand: Architectural Details For Insulated Buildings
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Spandrel Section:S – Structure
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Spandrel Section:P – Panel
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Spandrel Section:A – Air Barrier
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Spandrel Section:I – Insulation
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Spandrel Section:G -– Gap
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Spandrel Section:R – Rainscreen
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Parapet Section:Complete
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Parapet Section:S – Structure
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Parapet Section:P – Panel
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Parapet Section:A – Air Barrier
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Parapet Section:I – Insulation
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Parapet Section:G – Gap
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU/ Steel Parapet Section:R – Rainscreen
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ CMU Wall Section:Vapor Profile
2) Joseph Lstiburek: BSD-106 Understanding Vapor Barriers
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Brick/ Steel Stud Wall Section:Vapor Profile
2) Joseph Lstiburek: BSD-106 Understanding Vapor Barriers
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Professor & Head S. Lee | Center for Building Performance & Diagnostics | School of Architecture | Carnegie Mellon
Exercise
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