presents an overview of insulated concrete formwork (icf’s) · what are insulated concrete forms?...
TRANSCRIPT
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Trevor Ogle Presents
An Overview of
Insulated Concrete Formwork (ICF’s)
A Permanent Solution
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“NUDURA Incorporate & Brook Kerith Civil & Buildings will provide Certificates of Completion for members upon request.
Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
Thank You
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Course
Objective
To present the variety of
applications and benefits that
insulated concrete forms
(ICF’s) can be use on and
incorporated into
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Topic
s• What are insulated concrete
forms (ICF’s)
• Different types of Insulated Concrete Forms
• Benefits for Building with ICF’s
• Construction Process
• Building Types
• Codes and Design Capabilities and how they apply to ICF construction
• Green Products and LEED.
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What are Insulated Concrete
Forms?• Insulated Concrete Forms (ICF) are stay in place concrete forms
• ICF consist of two panels of EPS foam
• Both panels of insulation are held together with cross ties or “webs”integrally molded into the foam to create a block or “form unit”
• Insulation: Usually expanded (EPS) or
extruded (XPS) polystyrene
• Cross Ties or Webs: Usually
recycled plastic (HDPP),
nylon or metal
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Post & Beam
Waffle or Screen Grid
Flat Wall
ICF Wall
Types
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ICF Assembly
Methods
Fully assembled folding unitsPreformed fully assembled
units
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ICF Assembly
Methods
Site assembled
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Benefits of Building with
ICF’s• Energy Efficient
• Fire Resistance
• Sound Resistance
• Storm Resistance
• Indoor Air Quality
• Speed of
Construction
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Energy and Air
InfiltrationEnergy Efficient:
Thermal Mass Effect enables an
R24 insulation value to perform
equivalent to a low mass wall up
to R50.
Air Tight Envelope:
Solid Monolithic Concrete wall
eliminates risks associated with
air infiltration unlike the wall cavity
of traditional systems
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Superior Fire
Resistance6 inch core walls can be designed to meet a 4
hour fire resistance rating when tested to ASTM
E-119
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Efficient Sound
Barrier• 6 inch cavity provides
an Sound
Transmission
Classification (STC)
of 50
• Which can be easily
adapted to achieve a
rating of STC 71 or
higher
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Superior Wind
Resistance
Walls can be
designed to
withstand wind
speeds of up to 250
mph for tornado and
hurricane prone
regions
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Superior Mold
Resistance• EPS foam will not
propagate mold growth
• Passes all Fungi Resistance
Testing
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Speed of
Construction• Overall construction time is
reduced through the speed of
assembling the wall.
• This reduces the number of
sub trades necessary on site.
• Which reduces the number of
man hours/ square foot for a
project. (0.050 Man Hours/SF
typically)
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Simplicity of Design &
InstallationCombines SIX building envelope elements within ONE
product:
1) Concrete Forming System
2) Structurally Reinforced Monolithic Concrete
3) Continuous Exterior/ Interior Insulation
4) Continuous Air Barrier (Concrete)
5) Continuous Vapor Barrier (EPS)
6) Exterior and Interior Fastening Strips
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ICF Construction Process
Overview
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Footin
gs• Standard footings are installed according to applicable building
codes and engineering requirements
• Stepped footings are easily accommodated with the flexibility of
ICF construction
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Wall
AssemblyForm units are stacked similar to building blocks to the required building
dimensions
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Reinforcing steel is placed according to the design
requirements into notches provided by the webbing
Reinforcing
Steel
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Efficient Steel
Placement• Accurate positioning of steel in wall
• No additional tie wiring is required
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Moisture
Resistance
An EPS compatible
peel and stick
membrane is
available to provide
a dampproof and
waterproof barrier
against moisture
infiltration.
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• Window and door “Bucks” or frames are placed in the wall
• “Bucks” can be created using several different material options
Wall
Openings
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Wall alignment systems and
bracing is placed as the wall is
stacked.
Wall
Bracing
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• Concrete is poured
into the hollow cavity
of the wall to create
a solid 4” to 12”thick concrete wall.
• Walls can be
consolidated both
internally and
externally
Concrete
Placement
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The result is a solid
insulated reinforced
concrete wall
assembly with
excellent thermal
resistance and sound
transmission
properties.
Completed
Walls
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Wall to Floor
ConnectionsHollow Core
Steel/Concre
te
Wood
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Roof
Connections
Flat steel roof systems
Wood Truss Systems
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Electrical
InstallationsRough-In for electrical work is accomplished in various
ways
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Plumbing
Installations
• Up to 1 ½” PVC pipe with
coupler can be recessed into
the EPS for most flat wall
systems.
• “Rough In” is the same as
electrical
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Interior
Finishes• ½” (12mm) Drywall is a
common Interior finish
(also it acts a thermal
barrier)
• Drywall can be installed
directly on to NUDURA
walls using 1⅝” (42mm)
drywall screws.
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Versatile Finish
Flexibility
• Various Sidings (Cement,
Vinyl, Steel, Wood)
• Stucco (Acrylic, Hard
Coat)
• Brick Veneer
• Stone
• Cultured Brick or Stone
A variety of different finishing materials can applied to the
exterior of an ICF building:
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BUILDING TYPES
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Professional
Offices
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Building in
progress
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Fire
Stations
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Restauran
ts
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Commercial / Residential
Buildings
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Building Codes and
ICF’s• Whenever applying Codes
to ICF's, the most ideal approach is to think of an ICF wall as a monolithic flat reinforced concrete wall with foam plastic insulation applied to both sides of the concrete core.
• Building Construction type will determine the section of the code that is applicable to ICF construction.
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Building
Capabilities
• Flexible Core
Thicknesses - 4, 6, 8,
10, 12 inch & beyond to
24”
• Below Grade
• Single Storey
• Multi-storey
• Bearing and Curtain
Walls
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Floor and Roof
Options• Hambro
• Composite Deck
• Hollow Core
• Pre-cast “T’s”• Flat Slab
• Insulated Concrete Deck
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Design
Capabilities• 90 and 45 degree
corners
• Brick Ledge forms
• Brick Ledge Extensions
• T-Form Units
• Factory Cut Radius
forms
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Green Product- LEED Credit
Advantages• Can Improve Building
Energy Efficiency by 25
to 50 %
• Uses greater than 50%
Recycled Materials by
weight
• Durable Long Life
Materials
• Reduced Construction
Waste
• Consult manufacturers for
their reports on possible
point attainment under
LEED
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This concludes the
Continuing
Education Systems
Program On
Insulated Concrete
Forms
For more information
visit
www.nudura.com