An AIA Continuing Education Program - Ron Blank and Associates Inc
Transcript of An AIA Continuing Education Program - Ron Blank and Associates Inc
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DESIGNING WITH STRUCTURAL
INSULATED PANELS
An AIA Continuing Education Program Course Sponsor
Structural Insulated
Panel Association
P.O. Box 1699 Gig Harbor, WA 98335 Phone: 253-858-7472 Fax: 253-858-0272
Email:
Web:
www.sips.org
The Structural Insulated Panel Association (SIPA) is a nonprofit association
representing manufacturers, suppliers, dealer/distributors, design
professionals and builders committed to providing quality structural
insulated panels (SIPs) for all segments of the construction industry.
Credit for this course is 1 AIA HSW CE Hour
Designing With
Structural Insulated Panels
Course Number:
sip06c
© Ron Blank & Associates, Inc. 2009
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An American Institute of Architects
(AIA)
Continuing Education Program
Approved Promotional Statement:
Ron Blank & Associates, Inc. is a registered provider with The
American Institute of Architects Continuing Education System. Credit
earned upon completion of this program will be reported to CES
Records for AIA members. Certificates of Completion are available for
all course participants upon completion of the course conclusion quiz
with +80%.
Please view the following slide for more information on Certificates of
Completion through RBA
This program is registered with the AIA/CES for continuing
professional education. As such, it does not include content
that may be deemed or construed to be an approval or
endorsement by the AIA or Ron Blank & Associates, Inc. of any
material of construction or any method or manner of handling,
using, distributing, or dealing in any material or product.
AN AMERICAN INSTITUTE OF ARCHITECTS (AIA)
CONTINUING EDUCATION PROGRAM
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An American Institute of
Architects (AIA)
Continuing Education Program Course Format: This is a structured, web-based, self study course
with a final exam.
Course Credit: 1 AIA Health Safety & Welfare (HSW) CE Hour
Completion Certificate: A confirmation is sent to you by email and
you can print one upon successful completion of a course or from
your RonBlank.com transcript. If you have any difficulties printing or
receiving your Certificate please send requests to
Design professionals, please remember to print your
certificate of completion after successfully completing a
course conclusion quiz. Email confirmations will be sent
to the email address you have provided in your
RonBlank.com account.
AN AMERICAN INSTITUTE OF ARCHITECTS (AIA)
CONTINUING EDUCATION PROGRAM
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Become familiar with structurally insulated panels (SIP) and their
applications, energy strategies and current industry assembly
standard. Illustrate SIP design and engineering methods.
COURSE DESCRIPTION
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LEARNING OBJECTIVES
Upon Completion of this course the design
professional will be able to:
• Describe SIPs and their applications
• Explain SIP energy strategies
• Illustrate SIP design and engineering methods
• List current industry assembly standards
LEARNING OBJECTIVES
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COURSE OUTLINE
• SIP Basics
• SIP Applications
• Energy Efficiency and Green Building with SIPs
• Designing with SIPs
• Engineering for SIPs
• SIP Manufacturing
• SIP Construction
COURSE OUTLINE
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WHAT ARE SIPS?
Structural Insulated Panels
(SIPs) are a composite
structural panel with an
insulating core of rigid foam –
usually EPS or polyurethane –
and structural facings, most
commonly of 7/16” thick
oriented strand board (OSB).
WHAT ARE SIPS?
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WHAT ARE SIPS?
WHAT ARE SIPS?
Please Click to View Animation
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A BRIEF HISTORY
Development of “stressed-skin” panels for buildings began in the
1930s. Engineering and durability testing was conducted at the
Forest Products Laboratory (FPL) in Madison, Wisconsin, a facility
operated by the U.S. Forest Service.
FPL tested the concept of using skins to carry a portion of
structural loads by building a small house in 1937. Wall studs in
the panels were 3/4” x 2 ½,” rather than the usual 2” x 4.” First
Lady Eleanor Roosevelt dedicated the house, and the structure is
currently a daycare center run by the University of Wisconsin.
A BRIEF HISTORY
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A BRIEF HISTORY
FPL scientists reasoned that if skins could take part of the
structural loads, maybe they could eliminate framing
entirely. Engineering theory was developed and tested, and a
complete structure was built in 1947 using corrugated
paperboard. This structure was heated, humidified, and exposed
to Wisconsin weather for 31 years.
The structure was disassembled periodically for testing to observe
changes in panel stiffness, and bowing was minimal.
A BRIEF HISTORY
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A BRIEF HISTORY
A BRIEF HISTORY
• Famed architect Frank Lloyd Wright used structural
insulated panels in some of his affordable Usonian houses
built throughout the 1930s and 1940s.
• SIPs took a major leap in technology when one of Wright’s
students, Alden B. Dow, The Dow Chemical Company, created
the first foam core SIP in 1952.
• By the late 1960s rigid foam insulating products became
readily available, resulting in SIPs as we know them today.
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SIPS TODAY
SIPS TODAY
• Today, SIPs consist of a foam core and structural
facings (typically OSB)
• Manufactured and fabricated under factory controlled
conditions for greater accuracy
• Quick to assemble onsite
• Structurally sufficient – they do not use studs at regular
intervals
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SIPS TODAY
SIPS TODAY
Rigid Foam Insulation
Structural Facings
Structural Adhesive
Optional Electrical
Chases
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RIGID FOAM CORE
Four different types of foam
core materials are used:
Expanded Polystyrene (EPS)
Extruded Polystyrene (XPS)
Polyurethane
Polyisocyanurate
RIGID FOAM CORE
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STRUCTURAL FACING
Although OSB is most common, material may be:
OSB Metal Cementitious/
Composite
STRUCTURAL FACING
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STRUCTURAL FACING
STRUCTURAL FACING
Oriented Strand Board (OSB):
• Large sizes, up to 8’ x 24’
• Easy to work with using standard carpentry
tools and techniques
• Can be combined with nearly any type of
cladding or interior finish system
• Combines seamlessly with standard
dimensional lumber
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STRUCTURAL FACING
STRUCTURAL FACING
Metal:
• Usually of 24 or 26 gauge
thickness
• Either steel or aluminum
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STRUCTURAL FACING
STRUCTURAL FACING
Cementitious/Composite:
• Size of panels is usually limited
• Considerably heavier than the OSB or
metal SIPs
• OSB SIPs weigh about 4 lbs. per sq. ft.
Cementitious SIPs can weigh over 6 lbs.
per sq. ft. A 4’ x 12’ cementitious SIP would
weigh 288 lbs, compared to 192 pounds for
the same size OSB SIP
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SIP STRENGTHS
SIP STRENGTHS
• SIPs reduce the number of man hours per building
• Easy to train laborers to install SIPs
• BASF R.S. Means study shows residential builders cut
framing time by 55% over stick framing
• Less site waste, greener product and process
• Faster weatherproofing reduces moisture exposure
for all products
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SIP STRENGTHS
SIP STRENGTHS
• Better control over indoor air quality
• Less air infiltration gives the opportunity to control IAQ
through HVAC
• Design flexibility
• Automated manufacturing makes complex designs
easy
• Problems identified during the design process
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SIP STRENGTHS
SIP STRENGTHS
• Straight walls, faster drywall and trim installation
• Reduced callbacks due to nail popping and cracks due
to lumber shrinking
• Less building material theft during construction
• Less or no temporary heat required during building in
cold climates
• Integrates easily with other building systems such as
steel frame, timber frame, and wood framing
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SIP APPLICATIONS
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WALL SYSTEMS
WALL SYSTEMS
A Superior Building Product for Walls:
• Control over materials and labor – have
exactly what is needed onsite
• Problems solved prior to construction
• Straighter walls
• Tighter construction, less air infiltration
• Panel thicknesses sized to accept
dimensional lumber
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ROOF SYSTEMS
ROOF SYSTEMS
A Superior Building Product for
Roofs:
• Vaulted ceilings
• Much faster dry-in
• Greater spans than stick framing
• Pre-insulated
• Pre-engineered
• Tighter construction and less air
infiltration
• Panel thicknesses sized to accept
dimensional lumber
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FLOOR SYSTEMS
FLOOR SYSTEMS
A Superior Building Product
for Floors:
• Capping crawl spaces
• Pre-insulated
• Simple, easy, and fast
• Efficient over unconditioned
spaces such as a living space
over a garage
• Pre-engineered
• Floors that don’t squeak
• Panel thicknesses sized to accept
dimensional lumber
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PANEL SIZES AND
THICKNESSES
PANEL SIZES AND THICKNESSES
Typical Panel Sizes:
• 4’ x 8’ – 4’ x 24’
• 8’ x 24’
• Up to 9’ x 24’ custom in some areas
Typical Panel Thicknesses:
4 ½”, 6 ½”, 8 ¼”, 10 ¼”, 12 ¼”
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ENERGY EFFICIENCY AND
GREEN BUILDING WITH SIPS
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SIPS AS THE BACKBONE OF A
GREEN BUILDING STRATEGY
SIPS AS THE BACKBONE OF A
GREEN BUILDING STRATEGY
An efficient building envelope
creates design opportunities
such as creative daylighting
without sacrificing thermal
performance.
Starting with SIPs as the primary
structural and enclosure system
gets your green building project
started on the right foot.
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SIPS AS THE BACKBONE OF A
GREEN BUILDING STRATEGY
SIPS AS THE BACKBONE OF A
GREEN BUILDING STRATEGY
High performance SIP building envelope:
• Reduces energy used for heating and cooling
• Allows for better indoor air quality
• Uses less raw materials, generates less construction waste
• Allows for creative daylighting without sacrificing thermal
performance
• Maximizes the effectiveness of other technologies, such as
HVAC equipment and onsite generation
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OAK RIDGE NATIONAL
LABORATORY
OAK RIDGE NATIONAL LABORATORY
Whole-wall R-value studies measure the real world
performance of insulation:
• Measures the “thermal bridging” of structural members
• Tests include the common installation imperfections of
fiberglass insulation
SIPs have very few structural members and
continuous, uninterrupted insulation:
• 15% – 25% of the surface area on a wood frame wall
is solid lumber, compared to 3% of a typical SIP wall
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OAK RIDGE NATIONAL
LABORATORY
OAK RIDGE NATIONAL LABORATORY
ORNL
Studies:
4 ½” SIP wall
with EPS core
outperforms a
2” x 6” stud wall
with R-19
fiberglass BATT
insulation
*Shows “worst case commonly found of procedures for installing batt insulation”
Source: Whole Wall Rating for Structural Insulated Panel. ORNL, June 4, 1999
*
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OAK RIDGE NATIONAL
LABORATORY
OAK RIDGE NATIONAL LABORATORY
Air Infiltration Tests:
• Conductive losses (heat loss through insulation) are
only a portion of thermal loss in a building
• Convective losses (caused by air infiltration and
exfiltration) are of much greater importance when
designing an energy efficient building
• ORNL tests compare a SIP test room to a stick framed
room with OSB sheathing, fiberglass insulation, and
drywall
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OAK RIDGE NATIONAL
LABORATORY
OAK RIDGE NATIONAL LABORATORY
ORNL Studies:
Test room is 15
times tighter than
stick built
50-70% annual
savings over
Model Energy
Code
Whole Room Air Infiltration
SIP
Stick
0
20
40
60
80
100
120
140
Cu
bic
Feet
Per
Min
ute
Source: Heating and Blower Door Tests of the Rooms for the SIPA/Reiker
Project. ORNL, March 15, 2002.
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INFILTRATION REDUCTION
INFILTRATION REDUCTION
More than 50% of a home’s total envelope loss may be due to
infiltration!
SIPs have:
• Very few gaps
• Industry standard sealing details
• Superior IAQ
ENERGY STAR does not require a blower
door test for SIPs homes because of
proven performance
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HVAC ‘RIGHT-SIZING’
HVAC ‘RIGHT-SIZING’
• Because SIP buildings have low air infiltration, smaller
HVAC units should be specified
• Blower door test and ASHRAE methodology should be
used to size equipment
• Oversized equipment operates inefficiently and reduces
equipment life
• Oversized AC units fail to properly dehumidify
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HVAC ‘RIGHT-SIZING’
HVAC ‘RIGHT-SIZING’
• HVAC duct runs in SIP homes may be reduced because
of low air infiltration
• All ducts are inside the conditioned space
• Eliminates duct leakage outside of building envelope
• No condensation on ducts in cooling climates that
can lead to mold issues
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MOLD REDUCTION
MOLD REDUCTION
Mold needs the following requirements in order to flourish:
• Food
• Oxygen
• Water
Reduce any one of these sources to levels below those
required for mold growth and mold problems will be
prevented.
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MOLD REDUCTION
MOLD REDUCTION
Removing oxygen is not practical.
Cellulose materials (such as OSB) provide abundant food for
mold.
Regulating the relative humidity of the building between 40%
and 50% is the most effective mold prevention strategy.
Airtight SIP construction makes it much easier to dehumidify
(remove water), creating an environment where mold cannot
exist.
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WASTE REDUCTION
WASTE REDUCTION
Pre-cut SIPs help to dramatically control and limit site waste.
• Reduce
waste
disposal
fees
• Contributes
to LEED®
points
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GREEN BUILDING – LEED®
POINTS
GREEN BUILDING – LEED® POINTS
SIPs help projects qualify for Leadership in Energy and
Environmental Design (LEED®) certification.
Energy & Atmosphere:
Optimize Energy Performance
• Space heating and cooling account for 44% of energy use
in commercial buildings
• SIPs reduce amount of energy for heating and cooling
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GREEN BUILDING – LEED®
POINTS
GREEN BUILDING – LEED® POINTS
Materials and Resources:
Certified Wood
SIPs with Forest Stewardship Council
certified OSB are available from some
manufacturers
Environmental Quality:
Low Emitting Materials: Adhesives and Sealants
The adhesives used in SIPs do not off gas VOCs or other
harmful chemicals
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GREEN BUILDING – LEED®
POINTS
GREEN BUILDING – LEED®
POINTS
Environmental Quality:
Low Emitting Materials: Wood and Agrifiber Products
The OSB used in SIPs meets the requirements for low emitting
composite wood materials
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DESIGNING WITH SIPS
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SIP APPLICATIONS
SIP APPLICATIONS
SIPs over a steel frame
Raised SIP floor
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SIP APPLICATIONS
SIP APPLICATIONS
Custom log home
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SIPS VS. STICK FRAME
SIPS VS. STICK FRAME
SIPs SIP construction is a type of
shell construction. Point
loads are dispersed in all
directions.
STICK FRAME Stick frame is essentially
post and beam construction.
Point loads are transferred
from one member to another.
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HEADERLESS
CONSTRUCTION
HEADERLESS CONSTRUCTION
In many cases, headers
can be eliminated
completely.
Refer to manufacturer
load tables or header
tables in the
Prescriptive Method for
SIPs Used in Wall
Systems in Residential
Construction.
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VAULTED CEILINGS
VAULTED CEILINGS
Vaulted SIPs vs. Vaulted Stick
• Structural members
sized for span
condition
• Structural members
oversized for insulation
plus venting space depth
• Insulation requirements
call for more expensive
structural framing
members
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VAULTED CEILINGS
VAULTED CEILINGS
• Ice dams? What are they?
• SIP roofs reduce air
leakage—the main cause
of ice dams
• Insulated SIP overhangs
eliminate solar heating
that can cause ice dams
• Concern about possible
ice dams
Vaulted SIPs vs. Vaulted Stick
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VAULTED CEILINGS
VAULTED CEILINGS
• Eave and gable details
simplified
• Eave details need to
include venting
• Gables or ridges need
to include venting
detail
Vaulted SIPs vs. Vaulted Stick
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BEYOND STICK FRAME
BEYOND STICK FRAME
Sometimes, stick framing just won’t do…
In these cases, SIPs are the desirable way to go
Note:
Curved SIPs may not be
available in all areas.
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ENGINEERING FOR SIPS
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PRESCRIPTIVE METHOD FOR
SIPS
PRESCRIPTIVE METHOD FOR SIPS
The SIP industry has undertaken an initiative to create
standard performance criteria for SIPs.
Prescriptive Method and IRC Section R614 allow for the
resolution of simple designs into SIP structures without the
need for engineering.
Although the scope is limited, SIPs can be engineered to
nearly any design application using manufacturer specific
engineering data.
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PRESCRIPTIVE METHOD FOR
SIPS
PRESCRIPTIVE METHOD FOR SIPS
The Prescriptive Method is a guideline to facilitate the use of SIP wall
systems in the construction of one- and two-family dwellings. By providing
prescriptive guidelines for the construction of typical homes with SIP
systems, the need for engineering can be eliminated for many typical
applications.
Applicability Limits:
• Wall panels only
• 4 ½” and 6 ½” thick panels
• 40’ x 60’ building dimensions
• Up to two stories above a basement
• 10’ maximum wall height
• 130 mph wind speed
• 70 psf ground snow load
• Seismic design categories A, B,
and C
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PRESCRIPTIVE METHOD FOR
SIPS
PRESCRIPTIVE METHOD FOR SIPS
Prescriptive Method includes:
• Standardized SIP information
• Wall thickness requirements for various geometric and
loading conditions
• Prescriptive SIP lintel (header) tables
Additional engineering information available from individual
SIP manufacturers
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SIP FABRICATION
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SIP FABRICATION
SIP FABRICATION
1. Design – any plan can be
converted to SIPs. CAD
drawings are converted to shop
drawings that lay out cutting
plans for the panels
2. Fabrication – the finalized shop
drawings are fed into CNC
machines or used to cut panels
by hand
3. Shipped to jobsite – ready to
install
4. Complete packages available
with additional components
installed
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SIP SHOP DRAWINGS
SIP SHOP DRAWINGS
SIP software converts architectural plans into shop drawings
and material lists.
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CAD/CAM
CAD/CAM
SIP Software converts SIP shop drawings into Machine
Instructional Code.
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SIP CONSTRUCTION
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Surface Spline
Condition:
• Nails, staples or screws
may be specified
• Red markings indicate
continuous sealant
• CAD details available at
www.apacad.org
Note: Some manufacturers
may use different details.
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Double Dimensional Lumber Spline:
• Used either vertically (walls) or horizontally (roofs or
floors) when additional structural elements are
required
• Allows for tall walls and long spans
• Avoided except when necessary because of thermal
bridging
• In all cases lumber members should be well sealed
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Double
Dimensional
Lumber Spline:
Structural splines
may be single or
double members
3 ½” wide, such as
parallams or other
composites
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Wall-to-Wall or
Wall-to-Roof
Connection:
Washers used on
long screws will
double the pull-
through resistance
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Sill Condition:
Pressure treated
plywood is often
used as a capillary
break.
Foundation wall or
floor must be
insulated to comply
with ICC thermal
requirements.
Note: Outside facing
is supported by sill plate
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Wall-to-
Basement
Connection:
Note: Outside facing
is supported by sill
plate
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Second Floor
Connection:
Significantly less thermal
bridging and air leakage
than a conventional rim
board assembly
Note strapping for
uplift resistance
First floor wall panels
need to be sized
accordingly to
accommodate floor depth
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Roof-to-Wall
Connection:
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Typical Eave
Condition:
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Typical Soffit
Condition:
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Typical Truss
Condition:
SIPs easily integrate
with conventional
wood framing
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Typical
Ridge Beam
Condition:
Depending on load
conditions,
continuous
blocking at panel
edges may not be
required
Minimum 3/8” gap
at ridge to fill with
expanding foam
sealant
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INDUSTRY ASSEMBLY
STANDARDS
INDUSTRY ASSEMBLY STANDARDS
Typical Valley
Condition:
Valley blocking
as required by
structural
conditions
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ELECTRICAL WIRING
ELECTRICAL WIRING
Electrical, Including
Low Voltage:
Horizontal and vertical
chases are offered by most
manufacturers:
• Horizontal chases at 16”
& 45” or as required
• Vertical chases every 4’
or as required
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ELECTRICAL WIRING
ELECTRICAL WIRING
BASF R.S. Means Study:
An independent third party time and motion study conducted
by R.S. Means showed SIPs reduce wiring time by 11% in a
residential building.
Wiring may be concealed
in chases and/or soffits
Small access holes and
surface routs can also be
used
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SEALING METHODS
SEALING METHODS
Sealant:
For proper installations
that yield SIP benchmark
performance, sealing of
all joints in strict
accordance with the
manufacturer’s explicit
requirements is
absolutely critical and
necessary
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SEALING METHODS
SEALING METHODS
SIP TAPE:
• Provides a backup to internal
sealant that can be visually
inspected
• At in-plane SIP roof joints
• Applied to roof/wall
connection
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SEALING METHODS
SEALING METHODS
SIP TAPE:
Note SIP tape
draped over ridge
beam
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COURSE SUMMARY
By now the design professional should be able to:
• Describe SIPs and their applications
• Explain SIP energy strategies
• Illustrate SIP design and engineering methods
• List current industry assembly standards
COURSE SUMMARY
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DESIGNING WITH STRUCTURAL
INSULATED PANELS
An AIA Continuing Education Program Course Sponsor
Structural Insulated
Panel Association
P.O. Box 1699 Gig Harbor, WA 98335 Phone: 253-858-7472 Fax: 253-858-0272
Email:
Web:
www.sips.org
The Structural Insulated Panel Association (SIPA) is a nonprofit association
representing manufacturers, suppliers, dealer/distributors, design
professionals and builders committed to providing quality structural
insulated panels (SIPs) for all segments of the construction industry.
Credit for this course is 1 AIA HSW CE Hour
Designing With
Structural Insulated Panels
Course Number:
sip06c
© Ron Blank & Associates, Inc. 2009
This course is also available as
a Lunch and Learn