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Trevor Ogle Presents
An Overview of
Insulated Concrete Formwork (ICF’s)
A Permanent Solution
“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
Course
Objective
To present the variety of
applications and benefits that
insulated concrete forms
(ICF’s) can be use on and
incorporated into
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.
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
Post & Beam
Waffle or Screen Grid
Flat Wall
ICF Wall
Types
ICF Assembly
Methods
Fully assembled folding unitsPreformed fully assembled
units
ICF Assembly
Methods
Site assembled
Benefits of Building with
ICF’s• Energy Efficient
• Fire Resistance
• Sound Resistance
• Storm Resistance
• Indoor Air Quality
• Speed of
Construction
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
Superior Fire
Resistance6 inch core walls can be designed to meet a 4
hour fire resistance rating when tested to ASTM
E-119
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
Superior Wind
Resistance
Walls can be
designed to
withstand wind
speeds of up to 250
mph for tornado and
hurricane prone
regions
Superior Mold
Resistance• EPS foam will not
propagate mold growth
• Passes all Fungi Resistance
Testing
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)
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
ICF Construction Process
Overview
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
Wall
AssemblyForm units are stacked similar to building blocks to the required building
dimensions
Reinforcing steel is placed according to the design
requirements into notches provided by the webbing
Reinforcing
Steel
Efficient Steel
Placement• Accurate positioning of steel in wall
• No additional tie wiring is required
Moisture
Resistance
An EPS compatible
peel and stick
membrane is
available to provide
a dampproof and
waterproof barrier
against moisture
infiltration.
• Window and door “Bucks” or frames are placed in the wall
• “Bucks” can be created using several different material options
Wall
Openings
Wall alignment systems and
bracing is placed as the wall is
stacked.
Wall
Bracing
• 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
The result is a solid
insulated reinforced
concrete wall
assembly with
excellent thermal
resistance and sound
transmission
properties.
Completed
Walls
Wall to Floor
ConnectionsHollow Core
Steel/Concre
te
Wood
Roof
Connections
Flat steel roof systems
Wood Truss Systems
Electrical
InstallationsRough-In for electrical work is accomplished in various
ways
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
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.
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:
BUILDING TYPES
Professional
Offices
Building in
progress
Fire
Stations
Restauran
ts
Commercial / Residential
Buildings
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.
Building
Capabilities
• Flexible Core
Thicknesses - 4, 6, 8,
10, 12 inch & beyond to
24”
• Below Grade
• Single Storey
• Multi-storey
• Bearing and Curtain
Walls
Floor and Roof
Options• Hambro
• Composite Deck
• Hollow Core
• Pre-cast “T’s”• Flat Slab
• Insulated Concrete Deck
Design
Capabilities• 90 and 45 degree
corners
• Brick Ledge forms
• Brick Ledge Extensions
• T-Form Units
• Factory Cut Radius
forms
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
This concludes the
Continuing
Education Systems
Program On
Insulated Concrete
Forms
For more information
visit
www.nudura.com