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USACE / NAVFAC / AFCESA / NASA UFGS-03 52 00 (April 2006)
------------------------------
Preparing Activity:
NAVFAC Replacing without change
UFGS-03520 (August 2004)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated 1 April 2006
Section Table of Contents
SECTION 03 52 00
LIGHTWEIGHT CONCRETE ROOF INSULATION
04/06
PART 1 GENERAL
1.1 REFERENCES
1.2 QUALIFICATIONS OF APPLICATOR
1.3 SUBMITTALS
1.4 DELIVERY AND STORAGE
1.5 ENVIRONMENTAL CONDITIONS
1.5.1 Normal Conditions
1.5.2 Cold Weather Conditions
1.6 SAFETY AND HEALTH REQUIREMENTS
1.7 QUALITY ASSURANCE
1.7.1 Fabricator's Compatibility Certificates
PART 2 PRODUCTS
2.1 PORTLAND CEMENT
2.2 AGGREGATE
2.3 AIR-ENTRAINMENT
2.4 FOAMING AGENTS
2.5 WATER
2.6 EXPANSION JOINT FILLER MATERIAL
2.7 WELDED WIRE FABRIC
2.8 INSULATION BOARD
PART 3 EXECUTION
3.1 PERFORMANCE REQUIREMENTS
3.1.1 Minimum Compressive Strength
3.1.2 Minimum Oven Dry Density
3.1.3 Coefficient of Heat Transmission
3.2 SURFACE PREPARATION
3.3 STEEL ROOF DECKING
3.4 REINFORCING MESH OR WELDED WIRE FABRIC
3.5 APPLICATION OF INSULATING CONCRETE AND INSULATION BOARD
3.5.1 Mixing
3.5.2 Conveying
3.5.3 Expansion Joints
3.5.4 Slurry Coat and Insulation Board
3.5.5 Insulating Concrete Fill
3.5.5.1 Compacting
3.5.5.2 Curing
3.5.5.3 Patching
3.6 FIELD TESTS
3.6.1 Test Specimens
3.6.2 Rejections
SECTION 03 52 00
LIGHTWEIGHT CONCRETE ROOF INSULATION
NOTE: This guide specification covers the requirements for
insulating concrete
roof deck systems with embedded insulation board only.
Comments and suggestions on this guide specification are welcome and should
be directed to the technical proponent of the specification. A listing of
technical
proponents, including their organization designation and telephone number, is
on the Internet.
Recommended changes to a UFGS should be submitted as a
Criteria Change Request
(CCR).
Use of electronic communication is encouraged.
Brackets are used in the text to indicate designer choices or locations where
text must be supplied by the designer.
NOTE: The following information should be included on the project drawings:
1. High points and valleys on roof plan
2. Specific slope requirements
3. Roof drain details
4. Reinforcement locations and details.
5. Location of roof projections.
6. Moisture venting details and locations for insulating concrete over cast-in-place
or precast structural concrete substrates.
7. Location of corrugated steel form decking sections with slots for moisture
venting.
8. Insulation board thickness.
9. Vented flashing details and a mechanical fastening base sheet for built-up
roof.
10. Seismic design details. Include diaphragm shear values, steel form deck
design, and welding patterns if Section 05 30 00, STEEL DECKS is not in contract.
NOTE: Insulating concrete could be applied over structural or precast concrete,
or corrugated steel form decking. Provide design details to meet minimum roof
slope of 1/24.
PART 1 GENERAL
1.1 REFERENCES
NOTE: This paragraph is used to list the publications cited in the text of
the guide specification. The publications are referred to in the text by basic
designation only and listed in this paragraph by organization, designation,
date, and title.
Use the Reference Wizard's Check Reference feature when you add a RID outside
of the Section's Reference Article to automatically place the reference in the
Reference Article. Also use the Reference Wizard's Check Reference feature
to update the issue dates.
References not used in the text will automatically be deleted from this section
of the project specification when you choose to reconcile references in the
publish print process.
The publications listed below form a part of this specification to the extent referenced. The publications are
referred to within the text by the basic designation only.
AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS (ASHRAE) |
|
ASHRAE Hdbk-IP | | (2005) Fundamentals Handbook,I-P Edition |
ASTM INTERNATIONAL (ASTM) |
|
ASTM A 185 | | (2002) Steel Welded Wire Reinforcement, Plain,
for Concrete |
|
ASTM C 150 | | (2005) Portland Cement |
|
ASTM C 332 | | (1999) Lightweight Aggregates for Insulating
Concrete |
|
ASTM C 495 | | (1999a) Compressive Strength of Lightweight
Insulating Concrete |
|
ASTM C 513 | | (1989; R 1995) Obtaining and Testing Specimens
of Hardened Lightweight Insulating Concrete
for Compressive Strength |
|
ASTM C 578 | | (2005) Rigid, Cellular Polystyrene Thermal Insulation |
|
ASTM C 612 | | (2004) Mineral Fiber Block and Board Thermal
Insulation |
|
ASTM C 796 | | (1997) Foaming Agents for Use in Producing Cellular
Concrete Using Preformed Foam |
1.2 QUALIFICATIONS OF APPLICATOR
Perform work by or under the supervision of personnel specializing in insulating concrete application and having
not less than 2 years experience.
1.3 SUBMITTALS
NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL
PROCEDURES and edit the following list to reflect only the submittals required
for the project. Submittals should be kept to the minimum required for adequate
quality control.
A “G” following a submittal item indicates that the submittal requires Government
approval. Some submittals are already marked with a “G”. Only delete an existing
“G” if the submittal item is not complex and can be reviewed through the Contractor’s
Quality Control system. Only add a “G” if the submittal is sufficiently important
or complex in context of the project.
For submittals requiring Government approval on Army projects, a code of up
to three characters within the submittal tags may be used following the "G"
designation to indicate the approving authority. Codes for Army projects using
the Resident Management System (RMS) are: "AE" for Architect-Engineer; "DO"
for District Office (Engineering Division or other organization in the District
Office); "AO" for Area Office; "RO" for Resident Office; and "PO" for Project
Office. Codes following the "G" typically are not used for Navy, Air Force,
and NASA projects.
Choose the first bracketed item for Navy, Air Force and NASA projects, or choose
the second bracketed item for Army projects.
Government approval is required for submittals with a "G" designation; submittals not having a "G" designation
are [for Contractor Quality Control approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for the Government.] The following shall
be submitted in accordance with Section
01 33 00
01 33 00
01 33 00 SUBMITTAL PROCEDURES:
SD-03 Product Data
Performance requirements
Submit, indicating compressive strength, oven dry density, and coefficient of heat transmission.
SD-06 Test Reports
Performance requirements
Submit certified test reports on laboratory testing of insulating concrete samples taken at
time of placement.
SD-07 Certificates
Fabricator's Compatibility Certificates
SD-08 Manufacturer's Instructions
Application
1.4 DELIVERY AND STORAGE
Deliver all materials to the building site in original unopened, undamaged packages or containers, or approved
bulk handling equipment, with manufacturer's brand name and contents clearly identified. Protect materials against
dampness. Store materials under cover and off the ground, in well-ventilated areas, not exposed to extreme changes
of temperature and humidity. Prevent deterioration or intrusion of foreign substances. Keep materials dry until
ready for use. Protect metal components from rusting.
1.5 ENVIRONMENTAL CONDITIONS
1.5.1 Normal Conditions
When ambient air temperatures of 3 degrees C 40 degrees F or above are predicted for the initial 24 to 72 hours
after placement of insulating concrete, the use of hot water and other cold weather protection measures are not
required.
1.5.2 Cold Weather Conditions
When ambient air temperature at time of placing insulating concrete is between 3 and 0 degrees C 40 and 32 degrees
F, use hot water in temperature range of 32 and 39 degrees C 90 to 120 degrees F at the point of placement.
When ambient air temperatures of 0 degrees C 32 degrees F or below are predicted for the initial 24 to 72 hours
after placement of insulating concrete, provide additional protection measures as recommended by the aggregate
manufacturer.
1.6 SAFETY AND HEALTH REQUIREMENTS
Comply with manufacturer's protective measures in the safe installation of the insulation board.
1.7 QUALITY ASSURANCE
1.7.1 Fabricator's Compatibility Certificates
Submit a written statement from the insulating concrete fabricator certifying that materials for this project
are chemically and physically compatible.
PART 2 PRODUCTS
2.1 PORTLAND CEMENT
NOTE: Uses of Types I, II, and III portland cement are as follows:
Type I - For use when the special properties specified for other types are
not required
Type II - For general use, more especially when moderate resistance or moderate
heat of hydration is desired
Type III - For use when high early strength is desired.
ASTM C 150, Type [I] [II] [III].
2.2 AGGREGATE
NOTE: Lightweight perlite and vermiculite aggregate or cellular concrete, without
embedded insulation, should be specified in Section 03 31 00.00 10, CAST-IN-PLACE
STRUCTURAL CONCRETE, Section 03 30 00.00 20 CAST-IN-PLACE CONCRETE or Section
03 40 00.00 40 CAST-IN-PLACE CONCRETE. Insulation board applied over lightweight
perlite and vermiculite aggregate or cellular concrete should be specified Section
07 22 00, ROOF AND DECK INSULATION.
ASTM C 332, Group I.
2.3 AIR-ENTRAINMENT
NOTE: Air-entraining agent is not required with cellular concrete.
The air-entrainment agent shall be prepackaged or added at the mixer. Provide amount and type of air-entrainment
in accordance with the aggregate manufacturer's recommendations. Do not use calcium chloride.
2.4 FOAMING AGENTS
ASTM C 796.
2.5 WATER
Water shall be clean and free from injurious amounts of acids, alkali, organic matter, or other deleterious substances.
2.6 EXPANSION JOINT FILLER MATERIAL
ASTM C 612, Class 1, semi-rigid, modified for maximum density of 96 kg per cubic meter 6.0 pounds per cubic foot
.
2.7 WELDED WIRE FABRIC
NOTE: Insulating concrete requires reinforcement where slope substrate exceeds
1/3, and for achieving specific fire rated systems for metal deck systems, not
over structural concrete.
Galvanized steel welded wire fabric shall conform to ASTM A 185.
2.8 INSULATION BOARD
NOTE: Design and specify insulating concrete with embedded insulation board
to obtain contract U value requirements. Insulation board applied over insulating
concrete is specified in Section 07 22 00, ROOF AND DECK INSULATION.
Polystyrene insulation board conforming to ASTM C 578 RCPS Type [I], [II], [III], [IV], or [V], 600 by 1200 mm
24 by 48 inches, and of thickness [indicated] [necessary to provide a "C" value not greater than [_____]].
Boards shall be factory fabricated and slotted or perforated for keying the insulation board into the insulating
concrete.
PART 3 EXECUTION
3.1 PERFORMANCE REQUIREMENTS
Provide insulating concrete design mix to shall meet the following performance requirements. Test as specified.
3.1.1 Minimum Compressive Strength
[9 MPa] [_____][125] [_____] pounds per square inch in 28 days as tested with ASTM C 495.
3.1.2 Minimum Oven Dry Density
NOTE: Oven dry density should not be less than 350 kg per cubic meter 22 pcf
.
[350 kg] [_____] per cubic meter [22] [_____] pounds per cubic foot as determined by ASTM C 495.
3.1.3 Coefficient of Heat Transmission
NOTE: Meet contract U value requirements. Specify insulation board applied
over insulating concrete in Section 07 22 00, ROOF AND DECK INSULATION.
U value of [0.28] [_____] watt/sq. ft/degree C [0.05] [_____] Btu/hr/sq. ft/degree F, as determined in accordance
with ASHRAE Hdbk-IP. The U value shall incorporate the total roof deck and roofing system design and represent
the average U value for the total roof area.
3.2 SURFACE PREPARATION
Clean surfaces to receive insulating concrete of dirt, debris, and other foreign materials that would affect
bonding. Deck shall be free of standing water, snow, and ice.
3.3 STEEL ROOF DECKING
NOTE: Select the applicable paragraph(s) from the following:
NOTE: Insert the appropriate Section nnumber and title in the blank below using
format per UFC 1-300-02.
[[CAST-IN-PLACE] [PRECAST] STRUCTURAL CONCRETE DECK
As specified in [_____].]
3.4 REINFORCING MESH OR WELDED WIRE FABRIC
NOTE: Insulating concrete requires reinforcement where slope on substrate exceeds
1 to 3, and for achieving specific fire rated systems for metal deck systems,
not over structural concrete. Reinforcement size and spacing should be indicated
on drawings.
Install reinforcing mesh or welded wire fabric with a minimum end lap of 150 mm 6 inches and no side lap. Cut
mesh or fabric to fit at all [walls,] [curbs,] [roof drains,] and [openings]. [Mesh not required over structural
concrete decks.]
3.5 APPLICATION OF INSULATING CONCRETE AND INSULATION BOARD
NOTE: Use Section 07 51 13, ASPHALT BUILT-UP ROOFING or Section 07 55 23, ETHYLENE
PROPYLENE DIENE MONOMER (EPDM) ROOFING MEMBRANE, as guidance in developing details
and specifications for venting, roof expansion joints, and application of roofing
materials. In addition to providing expansion joints in the structure, provide
expansion joints in roofing membrane at all expansion joints in the insulating
concrete roof deck except those located at the perimeter of the roof deck and
where the roof deck abuts vertical surfaces.
NOTE: Edit application procedures for concrete requirements. When the roof
deck is designed for resistance to seismic or other lateral forces, the aggregate
manufacturer should be consulted for specific criteria. Expansion joints other
than those located at expansion joints in the structure shall not be provided
when the roof deck is designed as a diaphragm to resist horizontal forces.
Apply insulating concrete, insulation board and related materials in accordance with respective specifications
and manufacturer's instructions, except as modified herein.
3.5.1 Mixing
Mix insulating concrete materials mechanically to produce a uniform distribution.
3.5.2 Conveying
Convey insulating concrete from the mixer to place of final deposit by methods that prevent segregation or loss
of materials. Convey the concrete without material separation or loss of air content.
3.5.3 Expansion Joints
NOTE: Provide specifications for expansion joints in this or other sections.
Normally expansion joints are specified in Section 03 31 00.00 10, CAST-IN-PLACE
STRUCTURAL CONCRETE, Section 03 30 00.00 20 CAST-IN-PLACE CONCRETE or Section
03 40 00.00 40 CAST-IN-PLACE CONCRETE. When one fo these sections is included
in the project specification, coordinate the requirements for expansion joints
and construction joints with this section.
NOTE: Locations and dimensions of expansion joints: Expansion joints in the
lightweight insulating concrete should be 32 mm 1 1/2 inch wide or 25 mm one
inch wide as required. Expansion joints greater than 32 mm 1 1/2 inch wide
should be located at expansion joints in the structure. Expansion joints not
less than one inch wide should be located at the perimeter of the roof deck,
where the roof deck abuts vertical surfaces and at the following locations:
1. On cast-in-place structural concrete substrates, expansion joints in the
light weight insulating concrete should be located at expansion joints in the
building.
2. On precast concrete and steel form decking substrates, expansion joints
in the light weight insulating concrete should be placed as they correspond
with the structure and where the direction of the metal deck changes.
Provide expansion joints through the depth of the light-weight insulating concrete at the perimeters of the roof
deck, where the roof deck abuts vertical surfaces and where indicated. [Perimeter expansion joints are not required
with cellular concrete.]
3.5.4 Slurry Coat and Insulation Board
NOTE: Insulation board applied over insulating concrete should be installed
in accordance with Section 07 22 00, ROOF AND DECK INSULATION.
Bond the insulation board to the structural deck with a slurry coat of the same insulating concrete mix ratio
as used for fill over the insulation board. Screed the slurry of concrete to an even surface, to a minimum of
3 mm 1/8 inch over the top of the structural deck. [Fill corrugations of steel decking with insulating concrete
and screed even with the slurry coat.]
3.5.5 Insulating Concrete Fill
Place the insulating concrete on the insulation board and screed to an even surface in a continuous operation
until placement of a section is completed. Provide slopes as indicated for high points, valleys and positive
drainage [to roof drains] and to eliminate ponding. At no place shall the minimum and maximum thickness of the
insulating concrete be less than 50 mm or greater than 200 mm 2 inches or greater than 8 inchesrespectively over
the top of insulation board.
3.5.5.1 Compacting
Rodding, tamping, or vibrating are not permitted.
3.5.5.2 Curing
NOTE: The insulating concrete should be covered with subsequent roofing materials
soon after being allowed to cure for a minimum of 10 days.
Minimize traffic on the surface during the curing period. Under normal conditions, roofing may begin in 3 days.
When the insulating concrete is placed during extremely dry conditions, sprinkle additional water on the concrete
for hydration of the cement and to minimize shrinkage cracking. After a freezing or heavy rainfall or minor
scaling of less than 6 mm 1/4 inch depth, broom the surface immediately prior to installation of roofing.
3.5.5.3 Patching
Remove portions of the insulating concrete deck with excessive scaling of more than 6 mm 1/4 inch depth to sound
concrete. Patch the surface with portland cement concrete slurry.
3.6 FIELD TESTS
During progress of work, insulating concrete specimens shall be taken for laboratory testing as specified herein.
3.6.1 Test Specimens
NOTE: A minimum of one test should be required for each 40 to 60 cubic meters
50 to 75 cubic yards of insulating concrete.
Take test cylinder specimens for compressive strength in the presence of the Contracting Officer. Notify the
Contracting Officer one day prior to the date of taking specimens. A minimum of [four] [_____] test specimens
shall be made for each day's concreting, with at least one test required for each [57] [_____] cubic meters [75]
[_____] cubic yards of insulating concrete. Label specimens to indicate the location at which they were taken.
Store specimens in an undisturbed place which will not be exposed to rain and extreme changes of temperature
and humidity until ready for testing.
3.6.2 Rejections
If the specified laboratory requirements are not met, the rejected insulating concrete shall be field tested
for the compressive strength.Determine oven-dry unit weight with ASTM C 513. Remove and replace insulating concrete
which does not meet the requirements specified with new insulating concrete roof deck materials.
-- End of Section --