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.

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.

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.

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.

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.

NOTE: Air-entraining agent is not required with cellular concrete.

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.

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.

NOTE: Oven dry density should not be less than 350 kg per cubic meter 22 pcf .

NOTE: Meet contract U value requirements. Specify insulation board applied over insulating concrete in Section 07 22 00, ROOF AND DECK INSULATION.

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.

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.

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.

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.

NOTE: Insulation board applied over insulating concrete should be installed in accordance with Section 07 22 00, ROOF AND DECK INSULATION.

NOTE: The insulating concrete should be covered with subsequent roofing materials soon after being allowed to cure for a minimum of 10 days.

NOTE: A minimum of one test should be required for each 40 to 60 cubic meters 50 to 75 cubic yards of insulating concrete.