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Page 1 of 11
Note to Specifier: This MODEL (or OPEN-BID) specification lets the specifier correctly identify
Insulating Concrete Forming products of R-28 [RSI-4.87] or better and their installation. The specifier
can edit this document to fit the needs of specific projects. There are Specifier notes in blue text
throughout the guide specification to assist in the editing of the file to suit the project.
SECTION 03 11 19
INSULATING CONCRETE FORMING
1
GENERAL
1.1
OVERVIEW
.1
.2
.3
1.2
Compliance with Division 1 – General Requirements.
Supply and installation of Insulating Concrete Forms (ICFs) having an insulation value
of R-28 [RSI-4.87] or better for structural cast-in-place concrete walls; installation of
reinforcing steel bars, rough openings, embedded fasteners, sleeves and conduit; and
placement of concrete within the ICFs.
Supply, install, and remove adequate temporary false work, bracing, and scaffolding
complying with all applicable codes and regulations.
SCOPE OF WORK
Furnish all labor, materials, tools and equipment to perform:
.1
Installation of ICFs for R-28 [RSI-4.87] walls (or better),
.2
Installation of reinforcing steel within ICFs,
.3
Installation of rough openings, embedded anchors, conduit and similar in ICFs,
.4
Installation, adjustment, and removal of temporary false work, bracing, scaffolding,
.5
Placement of concrete into ICFs, and
.6
Final cleanup & related tasks.
1.3
MATERIALS/PRODUCTS INSTALLED BUT NOT SPECIFIED OR SUPPLIED UNDER
THIS SECTION
.1
.2
.3
.4
.5
.6
1.4
Reinforcing steel
Concrete
Hold-downs and anchors
Bolts, sleeves, inserts, and hangers
Sleeves, conduit, utility penetrations
Window and door opening bucks
ALTERNATES
.1
Alternate materials are materials not complying with all the specifications within this
Section. Alternate materials must be approved by the architect and engineer of record.
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RELATED SECTIONS
(Specifier Note: ADD/DELETE/MODIFY the Section Numbers and Titles to correspond with specific project requirements)
.1
.2
.3
.4
.5
.6
.7
.8
.9
.10
.11
.12
.13
.14
.15
.16
.17
1.6
REFERENCES
.1
.2
.3
.4
.5
1.7
Section 01 50 00 – Temporary Facility and Controls
Section 03 05 00 – Basic Concrete Materials and Methods
Section 03 10 00 – Concrete Forming and Accessories
Section 03 20 00 – Concrete Reinforcement
Section 03 30 00 – Cast-in-Place Concrete
Section 05 50 00 – Metals
Section 06 00 00 – Woods and Plastics
Section 07 10 00 – Damp-proofing and Waterproofing
Section 07 11 00 – Damp-proofing
Section 07 13 00 – Modified Bituminous Sheet Waterproofing
Section 07 20 00 – Thermal Protection
Section 07 24 00 – Exterior Insulation and Finish System
Section 07 46 00 – Siding
Section 07 60 00 – Flashing and Sheet Metal
Section 08 00 00 – Openings (Doors and Windows)
Sections 09 20 00 through 09 30 00 – Portland Cement Plaster (Stucco), Gypsum
Board
Sections 09 70 00 through 09 80 00 – Wall Finishes / Acoustical Treatments
ICF or ICFs: Acronym for “Insulating (or Insulated) Concrete Form(s)”
EPS: Acronym for “Expanded Polystyrene” treated with a flame-retardant when
referring to the foamed plastic insulation boards of the ICF system.
ICF Bracing System: a concrete form alignment & scaffolding system designed
specifically for use with Insulating Concrete Forms.
Window or Door Opening Buck: a pre-manufactured or site-built frame assembly used
to form a rough opening within the ICF walls by restricting concrete. If left in place, the
frame also provides subsequent anchorage and attachment surfaces for doors and
windows within the wall assembly.
ICF Installer: an installation subcontractor responsible for the ICF system installation
REFERENCE STANDARDS: (Specifier Note: ADD/DELETE/MODIFY the Standards to correspond to the specific
requirements and jurisdiction)
.1
American Society for Testing and Materials (ASTM)
.1
ASTM C165 “Standard Test Method for Measuring Compressive Properties
of Thermal Insulations”
.2
ASTM C177 “Standard Test Method for Steady-State Heat
FluxMeasurements and Thermal Transmission Properties by Means of the
Guarded-Hot-Plate Apparatus”
.3
ASTM C203 “Standard Test Methods for Breaking Load and Flexural
Properties of Block-Type Thermal Insulation”
.4
ASTM C272 “Standard Test Method for Water Absorption of Core Materials
for Structural Sandwich Constructions”
.5
ASTM C303 “Standard Test Method for Dimensions and Density of
Preformed Block and Board-Type Thermal Insulation”
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ASTM C518 “Standard Test Method for Steady-State Thermal Transmission
Properties” by Means of the Heat Flow Meter Apparatus”
.7
ASTM D1621 “Standard Test Method for Compressive Properties Of Rigid
Cellular Plastics”
.8
ASTM D2126 “Standard Test Method for Response of Rigid Cellular Plastics
to Thermal and Humid Aging”
.9
ASTM D2863 “Standard Test Method for Measuring the Minimum Oxygen
Concentration to Support Candle-Like Combustion of Plastics (Oxygen Index)”
.10
ASTM E90 “Standard Test Method for Laboratory Measurement of Airborne
Sound Transmission Loss of Building Partitions and Elements”
.11
ASTM E96 “Standard Test Methods for Water Vapor Transmission of
Materials”
.12
ASTM E336 “Standard Test Method for Measurement of Airborne Sound
Attenuation between Rooms in Buildings”
.13
ASTM E119 “Standard test Methods for Fire Tests of Building Construction
and Materials”
Canadian Standards Association
.1
CAN/CSA A23.3 “Design of Concrete Structures”
National Fire Protection Association (NFPA)
.1
NFPA 286 “Standard Methods of Fire Tests for Evaluating Contribution of Wall
and Ceiling Interior Finish to Room Fire Growth”
Underwriters Laboratories of Canada, Inc. (ULC)
.1
CAN/ULC S101 “Standard Methods of Fire Endurance Tests of Building
Construction and Materials”
.2
CAN/ULC S102.2 “Method of Test for Surface Burning Characteristics of
Building Materials and Assemblies”
.3
CAN4-S124-M “Test for the Evaluation of Protective Coverings for Foam
Plastic”
.4
CAN/ULC S-134 “Fire Testing of Exterior Wall Assemblies”
.5
CAN/ULC S701 “Standard for Thermal Insulation, Polystyrene, Boards and
Pipe Covering”
.6
CAN/ULC S717.1 “Standard for Flat Wall Insulating Concrete Form (ICF)
Systems”
.6
.2
.3
.4
1.8
ADMINISTRATIVE REQUIREMENTS
.1
.2
.3
Contractor shall supply all materials listed under sub-Section 1.3 (except concrete) to
the ICF Installer prior to starting work under this Section.
Contractor shall ensure that footings/slabs are within specifications (especially smooth
and level to within ±¼" [6 mm], step-heights in consideration of ICF’s form size,
sufficient widths) and that placement, spacing, and sizes of anchor dowels from
concrete footings/slab conform to design requirements and in consideration of ICF’s
form size.
Pre-Construction Meeting: Prior to commencing footings/slab work, Contractor shall
convene meeting(s) at the project site, to include the ICF Installer and trades
responsible for installing footings/slabs, steel reinforcement, false work, scaffolding,
concrete, and other trades responsible for installation work that interfaces with ICF
walls (floors/roofs, windows/doors, interior and exterior finishes, damp/waterproofing,
backfill) or involves ICF formwork modification (e.g. electricians, plumbers, HVAC).
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SUBMITTALS
(Specifier Note: ADD/DELETE/MODIFY the Section Numbers and Titles to correspond with specific project requirements)
.1
.2
.3
.4
.5
1.10
CLOSEOUT, WARRANTY, MAINTENANCE MATERIAL SUBMITTALS
.1
.2
.3
1.11
Conform to requirements of Section 01 33 00 Submittal Procedures.
Bid Submission Documents:
.1
With the bid proposal for this Section, Contractor shall submit written
confirmation of:
.1
Name of ICF Product proposed for the material & labor cost of the bid.
.2
Credentials of the ICF Installer which shall include that ICF Installer:
.1
Has a minimum of 2 years of experience in ICF construction of
projects similar in scope and complexity; or
.2
Is a qualified masonry or traditional concrete forming contractor with
a minimum of 5 years experience in construction of projects similar
in scope and complexity.
ICF Manufacturer’s Instructions: Contractor shall submit ICF manufacturer’s literature
that details products and installation procedures.
Test and Evaluation Reports:
.1
Contractor shall submit a copy of valid ICF Product’s evaluation report
demonstrating compliance with this Section and applicable Codes.
.2
Upon request, submit relevant test data and reports, which validate ICF
Product’s compliance with the performance criteria of this Section.
ICF Bracing System Engineering:
.1
For unsupported wall heights of more than 12 feet [3.6 m], Contractor shall
submit scaffold engineering for support of the ICF assembly and ICF Bracing
System or shall ensure an engineered design by the engineer of record for
support of the ICF assembly and the ICF Bracing System during construction is
submitted.
Conform to requirements of Section 01 78 00 Closeout Submittals.
Warranty Documentation: upon completion of work under this Section, ICF Installer
shall submit to Contractor a written copy of specific warranties of the ICF product for
subsequent provision to building owner.
Maintenance Documentation: upon completion of work under this Section, ICF Installer
shall submit to Contractor a copy of documentation pertaining to post repair,
renovation, modification or service work relating to the ICF walls after occupancy for
subsequent provision to building owner.
QUALITY ASSURANCE
.1
Qualifications:
.1
Contractor shall engage the services of an ICF Installer, or of an experienced
ICF Technical Consultant, trained in procedures for the correct installation of
the specified ICF Product, for the duration of the work under this Section.
.2
ICF Installer or ICF Technical Consultant shall submit written proof of ICF
training to Contractor prior to starting work under this Section.
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1.12
.2
.3
.4
.5
.6
Keep solvents, high heat, open flames, and any other ignition sources away from ICFs
at all times.
ICF Installer shall meet with Contractor on site prior to ICF Product delivery to coordinate provision of access, storage areas, protection of ICFs, and space
requirements for ICF Bracing System installation, reinforcing steel storage, and
forming.
Deliver ICFs in original factory packaging labeled with identification of product,
manufacturer, and manufacturing batch/lot numbers.
Handle ICFs with care not to damage or soil any of the components.
Store ICFs in well-ventilated areas away from high heat, ignition sources, and soils
that may contain insects, in manufacturer provided packaging/bundles to prevent
damage & soiling and to protect ICFs from extended exposure to UV (sun)light (or
provide similar protection for unpackaged ICFs).
In actual or potentially windy conditions, store ICF packages flat or secure them
adequately.
SITE CONDITIONS
.1
Ambient Temperatures: If construction is performed during periods when ambient
temperatures are below minima specified by the applicable Building Code for concrete
and masonry, Contractor shall provide adequate measures for protection and
supplementary heating as required to ensure proper concrete curing conditions in
accordance with manufacturer’s and concrete supplier’s recommendations.
2
PRODUCTS
2.1
MANUFACTURERS
.1
2.2
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DELIVERY, STORAGE AND HANDLING
.1
1.13
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For the ICFs supplied under this section, ICF manufacturer shall provide upon request
written documentation by an Accredited Third Party verifying the ICF’s compliance with
the applicable building code and with CAN/ULC S717.1 “Standard for Flat Wall
Insulating Concrete Form (ICF) Systems”
INSULATING CONCRETE FORMING SYSTEM DESCRIPTION
.1
.2
.3
.4
ICFs shall consist of two flame-retardant, expanded polystyrene (EPS) foamed plastic
insulation boards connected by molded high-density polyethylene or polypropylene
cross-ties.
The ICF’s EPS insulation boards shall be between 2⅝" [66.7 mm] and 3¼" [82.5 mm]
thick.
The ICF products shall be capable of forming all of the following concrete core
thicknesses: 4" [102 mm], 6" [152 mm], 8" [203 mm], 10" [254 mm], or 12" [305 mm].
The ICF’s cross-ties shall provide attachment points for exterior and interior wall
finishes every 16" [406 mm] or less.
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PERFORMANCE / DESIGN CRITERIA
.1
.2
.3
.4
.5
2.4
03 11 19
ICF wall assembly’s insulation levels shall be a minimum of R-28 (hr.ft2.F/Btu) [RSI4.87 (K·m²/W)] as calculated using ASTM C518 values @ 75°F [24°C] for EPS (and
including R 2.66 [RSI 0.468 for: inside air, ½" [12.7mm] gypsum wallboard, 6" [152mm]
concrete, ⅝" [15.87mm] T1-11 Finish & outside air).
The ICF’s EPS insulation boards shall either have a flame spread index of 25 or less
and smoke developed index of 450 or less (per ASTM E84 or UL723); or shall have
demonstrated compliance to NFPA 286 criteria.
Finished ICF wall assemblies shall provide fire resistance ratings tested and
documented by an Accredited Third Party as follows:
.1
For nominal concrete core thickness of 4" [102 mm]: 2 hour fire resistance
rating
.2
For nominal concrete core thickness of 6" [152 mm]: 3 hour fire resistance
rating
.3
For nominal concrete core thickness of 8" [203 mm] or more: 4 hour fire
resistance rating
Finished ICF wall assemblies shall provide a minimum sound transmission class (STC)
sound attenuation performance of STC 50 for concrete core thicknesses of at least 6"
[150 mm] (with non-fire rated ½" [12.7 mm] gypsum board on one side)
ICFs’ Cross-Ties’ Fastener Withdrawal and Lateral Shear Resistance in accordance
with CAN/ULC S717.1 “Standard for Flat Wall Insulating Concrete Form (ICF)
Systems”
MATERIALS
ICFs: Expanded Polystyrene (EPS) Insulation Board as per CAN/ULC S701 “Standard
for Thermal Insulation, Polystyrene, Boards, and Pipe Covering”
.1
Compressive Resistance: Min. @ 10% deformation ≥ 16 psi [110 kPa] (ASTM
D1621(a))
.2
Thermal Resistance: Min. @ 75°F [24°C] ≥ R 4.04 per inch [RSI 0.711 per
25.4mm] thickness (ASTM C518 or equivalent)
.3
Flexural Strength: Min. ≥ 35psi [240 kPa] (ASTM C203)
.4
Water Vapor Permeance: Max. ≤ 3.2 perm-in [200 ng/(pa•s•m2] (ASTM E96)
.5
Water Absorption: Max. ≤ 4% by Vol. (ASTM D2842)
.6
Dimensional Stability: Max, ≤ 1.5% linear change (ASTM D2126)
.7
Limiting Oxygen Index: Min. ≥ 24.0 % by Vol. (ASTM D2863)
.2 Incompatible Materials: ICFs must not be exposed to organic solvents, esters, amine
and aldehydes or petroleum-based liquids as they will damage or dissolve the ICFs.
Ensure that all sealants, primers, and other materials in contact with EPS and plastics
are compatible (water-based).
.3
Concrete supplied for ICFs under Section 06 30 00:
.1
Shall have a minimum compressive strength as specified by the engineer of
record or 2500 psi [17.5 Mpa] (measured at 28 days), whichever is higher.
Recommended maximum aggregate size shall be ⅜" [10 mm] for concrete core
thicknesses of 4" [102 mm] and 6" [152 mm] and ½" [13 mm] for concrete core
thicknesses of 8" [203 mm] and higher, and
.2
Shall have a concrete slump of a minimum of 6" [150 mm] at time of placement
into ICFs with a water/cement ratio less than 0.55 (subject to design revision to
suit application).
.1
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.4
.5
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When permitted by the engineer of record, recommended slump specification
shall be met with addition of super plasticizer/mid-range water reducing agents
to achieve design mix strength and adequately high concrete flow
characteristics.
Reinforcing Steel: Reinforcing steel grade, size, placement and spacing within
ICFs shall be as specified in Section 03 21 00 or by the engineer of record.
Sleeves, Hangers, Waterproofing, Parging, Finishes, etc.: all other materials
coming into contact with ICFs in the course of construction shall be compatible
with EPS foam
ACCESSORIES
.1
ICF Bracing System, false work:
.1
ICF Installer shall supply and use an ICF Bracing System or equivalent false
work to facilitate construction of the ICF walls and allow adjustments required
to ensure plumb and straightness of the ICF walls during construction, just prior
to concrete placement, and immediately after concrete placement while the ICF
wall is still adjustable to final finished position.
.2
The ICF Bracing System (and/or equivalent false work) shall be compliant with
CCOHS and all other applicable laws and regulations.
.3
Anchor bolts, hangers, and other embeds
.4
Sleeves for penetrations, Conduit
.5
Window and Door Bucks: stay-in-place or removable plastic or treated lumber
buck-out materials.
3
EXECUTION
3.1
INSTALLERS
.1
3.2
03 11 19
ICF Installer shall meet the requirements of sub-Section 1.9.2 Bid Submission
documents
EXAMINATION
.1
Verification of Conditions
.1
Verify that site conditions are as set out in sub-Section 1.13 “Site Conditions”.
.2
Verify adequate access for workers and equipment for all phases of work.
.3
Verify dimensions of lines, levels and centers against for-construction building
plans before proceeding with formwork installation.
.4
Verify footings/slabs installed under Section 03 30 53 are within specifications
(especially smooth and level within ±¼" [6 mm], footing steps in increments of
ICFs form height, sufficient width).
.5
Verify placement, spacing, and sizes of reinforcing steel dowels from concrete
footings/slab as per design requirements and in consideration of ICFs form
size.
.6
Ensure reinforcing steel dowels have OSHA compliant protection installed until
ICFs are stacked above dowel level.
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Clean top of footings and slabs prior to starting installation of ICFs.
.1
Schedule installation of concrete formwork with related work specified in other
Sections to ensure that ICF wall assembly, including window and door
accessories, trim, utility penetrations, transition changes, and mechanical
service provisions are protected against damage from weather, corrosion, and
adjacent construction activity.
INSTALLATION – GENERAL
.1
.2
.3
3.5
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PREPARATION
.1
3.4
03 11 19
Install ICF formwork, reinforcing steel, and concrete per design requirements and in
strict accordance with ICF manufacturer’s installation manual (as supplied under subSection 1.9.3) and all applicable codes and standards including, but not limited to,
CAN/CSA-S269.3 “Concrete Formwork” and CAN/CSA-A23.1/A23.2 “Concrete
Materials and Methods of Concrete Construction/Methods of Test and Standard
Practices for Concrete”.
Install and adjust ICF Bracing System and/or all false work to ensure stability and
alignment of ICFs and formwork during all phases of work in accordance with CSA
S269.1 “Falsework for Construction Purposes”. Provide additional support for ICFs,
Window and Door Opening Bucks and formwork where necessary.
Follow all required and recommended installation procedures. Specifically the ICF
Installer shall assure that cross checks with respect to layout, level and vertical
alignment are performed adequately and regularly.
INSTALLATION - FORMWORK
.1
.2
.3
.4
.5
.6
.7
.8
.9
.10
.11
Install ICFs in accordance with ICF manufacturer’s installation instructions, in a
running bond pattern assuring placement and alignment of cross-ties / attachment
strips.
Install and secure Window and Door Opening Bucks. If specified, assure that the
bucks have been prepared for anchoring to concrete as specified.
Secure bottom layer of ICFs against displacement from footing or slab.
Install horizontal reinforcing steel, as specified, within ICFs. Assure reinforcement
diameter, grade and positioning complies with engineering specifications and is
installed in correct position of wall for each course placed and with lap-splices as
specified.
Install ICF Bracing System and/or other false work in strict accordance with ICF
Bracing System manufacturer’s installation instructions. Regularly check everything for
crew safety, anchorage to ICF system as recommended by manufacturers, and for
vertical alignment.
Install reinforcing steel for lintels, as specified, over all wall openings.
Install all sleeves, conduit, anchor bolts, hangars, embeds, and similar as specified.
Install vertical reinforcing steel, as specified, within ICFs. Assure reinforcement
diameter, grade and positioning complies with engineering specifications and is
installed in correct position of wall with lap-splices as specified.
Secure ICF corners, angles, T-walls and similar as necessary
Secure top layer of ICFs against lateral movement along top edges
Clean formed cavities of all debris, snow, and ice prior to placing concrete. Flush with
water above freezing-levels or use compressed air or other methods to remove
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.13
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remaining foreign matter. Ensure that water and debris drains to exterior through
clean-out ports.
Inspection before Concrete Placement: ICF Installer shall assure string lines or
equivalent are placed at top of all walls and the wall system is aligned for concrete
placement; cross check and assure that all required service penetration sleeves,
embed plates, anchor bolts, fittings, beam pocket preparations, as specified on
drawings, are in place and secured prior to concrete placement.
Concrete Placement: ICF Installer shall assure that slump, strength and aggregate
size are as specified per sub-Section 2.4.3 and that concrete tickets are retained for
Contractor’s records. ICF Installer to assure truck deliveries are timed for rate of
placement and that placement rate does not exceed CSA recommended practices.
ICF Installer shall also assure concrete consolidation by mechanical means per CSA
standards after each concrete lift.
ICF Bracing System, false work, and scaffolding adjustment & removal: ICF Installer
shall assure entire wall lengths are aligned to vertical plumb by string line and
screeded to horizontal level for finished wall height as required prior to concrete set.
After the initial concrete cure, Contractor shall assure that scaffolding, ICF Bracing
System, and false work remain in place until the engineer of record permits removal.
CONSTRUCTION
.1
.2
.3
3.7
03 11 19
Conformance to design drawings and specifications
.1
All formwork and walls in plumb, straight, square, level and in specified
dimension before, during and after the concrete pour
Interface with Other Work
.1
Locate and set items for casting directly into concrete.
.2
Provide formed openings, sleeves, pockets where required for items to be
embedded in or to pass through concrete work.
.3
Coordinate with work of other trades in placing bolts, anchors, hangers,
sleeves and any other inserts.
.4
Install components for wall, roof and/or floor connections as specified.
.5
Install all accessories in accordance with their manufacturer’s instructions,
straight, level and plumb. Secure items against displacement during the
concrete pour.
Site Tolerances
.1
Construct ICFs and formwork within tolerances of CAN/CSA-S269.3 or as
otherwise specified
FIELD QUALITY CONTROL
.1
.2
.3
.4
Conformance to design drawings and specifications
All formwork and walls in plumb, straight, square, level and in specified dimension
before, during and after the concrete pour
Damaged ICFs
.1
Installer shall clearly mark and segregate any damaged ICFs or ICF
components to prevent their use in the project (unless adequate remedies are
used).
Reinforcing Steel
.1
Install per Section 03 20 00 – Concrete Reinforcement
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.2
.5
.6
3.8
Regularly inspect & verify stability of erected ICF, formwork, Window and Door
Opening Bucks, ICF Bracing System, false work, and scaffolding to ensure that
elements are secure and that work is in accordance with design specifications and all
laws and regulations.
CLEANUP
.1
.2
.3
3.9
The installer shall check and document specifications and placement of all
reinforcing steel placed into ICFs and how it is secured against displacement
during the concrete pour
Concrete
.1
Per Section 03 30 00 – Cast-in-Place Concrete
.2
The installer shall check and document specifications, age, additives,
placement, and consolidation of all concrete placed into ICFs along with
environmental conditions during concrete pours.
.3
Site Tests: per Section 03 30 00 – Cast-in-Place Concrete or specify special
requirements (e.g. slump tests after additives, core samples)
Clean formwork as installation proceeds and remove foreign matter within formwork.
ICF Installer to remove ICF Bracing System and ICF related false work when permitted
by the engineer of record
Clean up and properly dispose of all debris remaining on job site related to work under
this Section
PROTECTION
.1
.2
In case the final exterior finish application happens more than 8 weeks after erection of
ICFs, provide temporary cover for installed ICFs to reduce EPS degradation from UVlight, or sufficiently rasp down all EPS areas affected by UV-degradation.
For ICF walls’ intermediate concrete pours, prior to concrete placement, the tops of the
ICFs shall be protected with track, tape or other means to ensure no concrete soils the
ICFs’ interlocking mechanisms.
END OF SECTION
R-28 [RSI-4.87] ICF Wall Configurations
by Quad-Lock Building Systems Ltd.
Concrete Core
ICF Wall Thickness
Fire Resistance
Thickness
with EPS
Rating (FRR)
4" [102 mm]
10¼" [260 mm]
2 hours
6" [152 mm]
12¼" [311 mm]
3 hours
8" [203 mm]
14¼" [362 mm]
4 hours
10" [254 mm]
16¼" [413 mm]
4 hours
12" [305 mm]
18¼" [464 mm]
4 hours
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