NOTE: This guide specification covers the requirements for membrane waterproofing .

Comments and suggestion on this specification are welcome and should be directed to the technical proponent of the specification. A listing of the 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: This specification is intended for use where local practice and experience indicates that protection against hydrostatic pressure or conditions of excessive dampness can be achieved by using membrane waterproofing. For other acceptable methods of waterproofing, refer to the appropriate unified facilities guide specification.

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: Prefabricated laminated asphalt membrane waterproofing and copper fabric shower pans may be included as a Contractor's option for shower pans.

NOTE: Bulk liquid asphalt may be included as a Contractor's option when the project is to be constructed within 160 kilometers 100 miles of a bulk liquid asphalt manufacturer's plant.

NOTE: Bulk liquid asphalt may be included as a Contractor's option when the project is to be constructed within 160 kilometers 100 miles of a bulk liquid asphalt manufacturer's plant.

NOTE: Type I is suitable for use below grade under uniformly moderate temperature conditions (foundations, tunnels, and subways); Type II is suitable for use above grade where not exposed to temperatures exceeding 50 degrees C 122 degrees F (railroad bridges, culverts, retaining walls, tanks, dams, conduits, and spray decks); Type III is suitable for use above grade on vertical surfaces exposed to direct sunlight or temperatures above 50 degrees C 122 degrees F.

NOTE: Type I is made from asphalts characterized as self-healing adhesive and ductile and should be used where Types I and II asphalt (ASTM D 449) are used. Type II cement has a high softening point and has relatively low ductility and should be used where Type III asphalt (ASTM D 449) is used.

NOTE: One of the following reinforcement fabrics may be selected by Designer or all fabrics may remain in section as Contractor options.

NOTE: Prefabricated laminated asphalt membrane waterproofing and copper fabric shower pans may be included as a Contractor's option for shower pans.

NOTE: Prefabricated laminated asphalt membrane waterproofing and copper fabric shower pans may be included as a Contractor's option for shower pans.

NOTE: Where treated wood is specified in areas to be waterproofed, waterproofing should not be applied in contact with wood treated with oil or oil-borne preservatives which may leach through and destroy the effectiveness of the asphalt.

NOTE: Concrete surfaces to which membrane waterproofing is to be applied should be moist cured. Waterproofing should not be applied to surfaces which have been cured with membrane-forming compounds or other coatings which may reduce the bonding of the waterproofing to the concrete. Masonry over which waterproofing is to be applied should be specified to have flush mortar joints.

NOTE: Prefabricated laminated asphalt membrane waterproofing and copper fabric shower pans may be included as a Contractor's option for shower pans.

NOTE: Prefabricated laminated asphalt membrane waterproofing and copper fabric shower pans may be included as a Contractor's option for shower pans.

NOTE: Bulk liquid asphalt may be included as a Contractor's option when the project is to be constructed within 160 kilometers 100 miles of a bulk liquid asphalt manufacturer's plant.

NOTE: Where waterproofing must be applied to concrete or masonry walls in waterlogged soils or where settlement is likely to occur, use fabric type instead of felt type. Where rough masonry walls must be waterproofed, unless such walls can be made reasonably smooth with parging of cement mortar, only fabric type should be specified. To determine number of plies of membrane for vertical application and number of moppings required for different water pressures:

               Head of Water       Plies of Membrane      Moppings
               (in millimeters)
                300-1050                 2                   3
                1051-3200                3                   4
                3201-7000                4                   5
                7001-15000               5                   6

               Head of Water    Plies of Membrane      Moppings
                (in feet)
                1-3                    2                   3
                4-10                   3                   4
                11-25                  4                   5
                20-50                  5                   6

NOTE: Bulk liquid asphalt may be included as a Contractor's option when the project is to be constructed within 160 kilometers 100 milesof a bulk liquid asphalt manufacturer's plant.