USACE / NAVFAC / AFCESA / NASA UFGS-07 16 19 (January 2007) ------------------------------ Preparing Activity: NAVFAC Replacing without change UFGS-07 16 19 (April 2006) UNIFIED FACILITIES GUIDE SPECIFICATIONS References are in agreement with UMRL dated January 2009 SECTION 07 16 19 METALLIC OXIDE WATERPROOFING 01/07 NOTE: This guide specification covers the requirements for metallic oxide waterproofing for application on interior face of concrete walls and floors below grade, to provide a barrier impervious to passage of water under hydrostatic pressure. Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items, choose applicable items(s) or insert appropriate information. Remove information and requirements not required in respective project, whether or not brackets are present. 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). NOTE: Surfaces other than concrete may be waterproofed by this method; consult manufacturer's literature or approved applicators. 1. Metallic waterproofing is rigid and susceptible to cracking during settlement or shrinkage of surfaces to which it is applied. On interior surfaces, it is readily accessible for repair by cutting out defective areas and applying new material. 2. Metallic waterproofing can be applied to exterior wall surfaces; however, more flexible materials may be more suitable and effective. 3. Metallic waterproofing compound consists of pulverized metallic (gray cast iron) aggregate, factory mixed with oxidizing agents. It is field mixed with portland cement, sand, and water and applied in two coats with stiff bristle brushes, wedging particles into, and filling, pores and apertures. NOTE: On the drawings, show: 1. Location and extent of metallic waterproofing. If not shown, designate surfaces to be waterproofed in a paragraph entitled "Surfaces to be Waterproofed," inserted in Part 3. 2. Details of pipe and conduit penetrations through treated walls or floor. 3. Continuous groove or cove at juncture of floor and walls and at juncture of floor and columns 38 mm 1 1/2 inches in cross section, cut into floor, walls and columns. Indicate that groove is to be filled with metallic oxide waterproofing mortar. 4. Details of expansion and control joints. 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. ASTM INTERNATIONAL (ASTM)ASTM C 144(2004) Standard Specification for Aggregate for Masonry MortarASTM C 150(2007) Standard Specification for Portland CementASTM C 33(2007) Standard Specification for Concrete Aggregates1.2 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 SUBMITTAL PROCEDURES: _{SD-04 Samples Metallic waterproofing SD-06 Test Reports Iron content} of metallic waterproofing _{Oxidizing agent content} of metallic waterproofing Provide certified statement attesting that chemical and physical composition of metallic waterproofing material have been determined by specified testing methods and material has been found to conform with specification requirements. _{SD-08 Manufacturer's Instructions Mixing} 1.3 TESTING OF SAMPLES Prepare a 100 gram sample. Using a magnet over a watch glass, transfer magnetic portion into separate pile leaving nonmagnetic behind. Weigh nonmagnetic portion. a. Total _{iron content}: Determine total iron by percentage of sample weight using standard qualitative chemical analysis procedures. b. _{Oxidizing agent content}: Determine percentage of oxidizing agent by standard qualitative chemical analysis technique. 1.4 SAMPLE INSTALLATION After submittals are approved and before work is started apply _{metallic waterproofing} to a test area not less than [10] [100] [_____] square meters feet, using methods and materials specified herein. Location to be selected by Contracting Officer. Waterproofing shall be visually and physically examined for bond and loose materials by waterproofing materials manufacturer or his representative. A wide-blade putty knife or similar tool will be used for inspection of bond. Failure of waterproofing to bond or appearance of excessive loose materials will be cause for disapproval of proposed material and method of application. Clean disapproved test area free of applied finish, leaving base clean and acceptable for new application. If test area is disapproved, make an additional test area. Do not apply waterproofing in other areas until application of test area has been approved by waterproofing materials manufacturer or his representative, and accepted by Contracting Officer. Approved installation shall remain in place and open to observation as criteria for all metallic waterproofing under contract. 1.5 DELIVERY AND STORAGE Deliver materials to project site in original sealed containers with manufacturer's name and brand clearly identified. Store in dry locations with adequate ventilation and handle in a manner to prevent damage or contamination. 1.6 ENVIRONMENTAL CONDITIONS Enclose or protect surfaces to be treated from excessive temperature changes. Ambient temperature shall be above 10 degrees C 50 degrees F during application and for duration of curing period. Keep water level below location of surfaces being treated until completion of the treatment and curing period. Provide adequate ventilation to properly oxidize metallic waterproofing. PART 2 PRODUCTS 2.1 PORTLAND CEMENT ASTM C 150, Type I. 2.2 FINE AGGREGATE ASTM C 144 (sand) for waterproofing coats and ASTM C 33 for protective coat. 2.3 WATER Potable and free from injurious amounts of oil, alkalis, acids, organic matter, and other deleterious substances. 2.4 METALLIC WATERPROOFING COMPOUND Clean, commercial, pulverized cast iron mixed in dust-confining container with chemical oxidizing agent such as sodium peroxide, potassium peroxide, or ammonium chloride. 2.4.1 Pulverized Cast Iron 85 percent minimum by weight of metallic iron of magnetic portion. Chemical oxidizing agent content shall be a minimum of 3 percent and a maximum of 5 percent by weight of compound. Presence of dirt, paraffin, bitumen, or other foreign substances in excess of one percent by weight of waterproofing compound will be cause for rejection. 2.4.2 Iron Oxide Content Do not exceed 5 percent by weight of magnetic iron. The magnetic portion of iron shall not contain more than 0.05 percent by weight of oil. 2.4.3 Magnetic Iron Particles Graded as follows:              Sieve size                     Percent passing              No. 20 screen                  100              No. 35 screen                  95 to 100              No. 40 screen                  90 to 100              No. 60 screen                  65 to 100              No. 100 screen                 45 to 70              No. 200 screen                 10 to 25 2.5 CALKING Polyurethane foam sealant. PART 3 EXECUTION 3.1 SURFACE CONDITION Examine all surfaces to be waterproofed to ensure that concrete has properly cured, all shrinkage has occurred, laitance has been removed, cracks and honeycombs have been cut out and filled, and surfaces have been roughened to provide bond for waterproofing material. Correct all defects that will adversely affect proper completion of waterproofing. 3.2 SURFACE PREPARATION 3.2.1 Concrete Surfaces NOTE: Coordinate with: (1) Division 3, "CONCRETE," for surface preparation requirements, continuous grooves of junction between horizontal and vertical surfaces, cutting out of wire ties, honeycombs, and porous areas, installation of anchoring devices, built-in water stops, and concrete floor toppings; (2) Division 7, "THERMAL AND MOISTURE PROTECTION," for resilient-joint calking and plastic and metallic flashings; (3) Division 9, "FINISHES," for plaster or similar wall finish; (4) Division 22, "PLUMBINGM," for watertight connections, for piping sleeves, and drains; and (5) Division 26, "ELECTRICAL," to provide that no wiring devices be installed in recesses until waterproofing work is complete. Similar notes may be required in other specification divisions for recessed anchor devices and other related work. Roughen concrete wall and floor surfaces by light bushhammering, sandblasting, acid etching, or high pressure water cleaning to provide firm, unspalled granular surface, clean and free from loose materials, debris, and detrimental substances such as dust, dirt, oil, grease, or other coatings. [Cut out wire ties to depth of 38 mm 1 1/2 inches. Cut out holes, honeycombs, open joints, and porous areas. Make all cuts square to a depth of 25 to 38 mm 1 to 1 1/2 inches. Do not cut V-grooves or cone-shaped recesses.] 3.2.2 Walls Clean wall areas that have been cut out, moisten with water, and fill flush with a stiff mortar mix composed of one 42.6 kilogram 94 pound sack of portland cement, 85.3 kilograms 188 pounds of sand, and 6.8 kilograms 15 pounds of metallic oxide waterproofing compound. Apply filling and patching in layers not exceeding 19 mm 3/4 inch thickness, worked into voids, compacted, and finished flush with adjacent surfaces. Roughen patched areas to provide level, firm, granular surface. 3.2.3 Grooves, Joints, and Intersections NOTE: Insert appropriate Section number and title in the blank below using format per UFC 1-300-02. Strip, clean, and remove all loose material from construction joints, grooved recesses, and intersections of vertical and horizontal surfaces. Pack joints with waterproofing mortar mixed in proportions of one 42.6 kilogram 94 pound sack of portland cement and 85.3 kilograms 188 pounds of sand, and 6.8 kilograms 15 pounds of metallic oxide waterproofing compound. Finish compacted mortar flush with adjacent surfaces; finish internal angles to a round cove. Grooves in construction joints, at intersections of horizontal and vertical surfaces, and fillers and water stops for expansion and contraction joints are specified under [_____]. 3.2.4 Calking Apply calking around all drains, pipes, and other items which penetrate the surfaces to be waterproofed. 3.2.5 Recesses Waterproof recesses, but do not fill to a lesser opening than detailed. 3.2.6 Penetrations Do not apply waterproofing until anchorage items or other items passing through or protruding from the surfaces have been installed. Treatment shall be completed and approved prior to attachment of utilities to anchorage items. 3.3 _MIXING Follow mixing instructions supplied by the manufacturer. 3.4 APPLICATION 3.4.1 Limits of Application Completely coat columns integral with exterior walls. Return wall waterproofing at least 600 mm 24 inches on interior concrete walls and 1200 mm 48 inches onto masonry walls that are in place at the time of the waterproofing application. Return floor waterproofing at least 300 mm 12 inches vertically up on the face of all interior walls, partitions, and interior columns in place at the time of waterproofing application. 3.4.2 Walls and Columns Thoroughly dampen surfaces to receive waterproofing. Apply two coats of thick slurry to each 10 square meters 100 square feet of surface: first coat, consisting of 42.6 kilograms 94 pounds of portland cement, 85.3 kilograms 188 pounds of sand, and 4.5 kilograms 10 pounds of metallic oxide waterproofing compound; second coat, same mix as first coat except with 3.6 kilograms 8 pounds of metallic oxide waterproofing for each 42.6 kilograms 94 pounds of cement. Apply each coat by brushing with stiff bristle brushes to seal all pores. Allow sufficient time between coats to permit oxidation of material, but not more than 24 hours before application of subsequent treatment. Periodically spray each coat with fine fog spray during oxidation period to ensure thorough curing. Where air circulation is insufficient to properly oxidize waterproofing, provide fans or other means to ensure adequate circulation. 3.4.3 Floors After surfaces are roughened and properly prepared, thoroughly wash and clean all surfaces prior to application of waterproofing treatment. Apply two coats of thick slurry as previously specified for walls and columns, each coat thoroughly scrubbed and broomed to completely coat floor surface. 3.4.4 Bond Coat NOTE: If wall or floor finishes such as plaster or cement mortar floor toppings are scheduled on the drawings and specified in other specification sections, delete reference to protective finish coating. Walls and floors not specified or scheduled to receive other finishes must receive the Protective Finish Coating. Prior to application [of plaster, cement mortar topping, or similar wall and floor finishes specified in other sections,] [of protective finish coating specified herein] apply a bond coat of metallic oxide waterproofing mixed in same proportions as specified for second coat on walls and columns. Prior to bond coat application, thoroughly broom previously treated surfaces with thick bristle brooms to remove all traces of unoxidized compound, and dampen with water. Apply bond coat immediately before finish coat so there will be no premature curing or setting of bond coat before finish coat is applied. [3.4.5 Protective Finish Coating NOTE: If wall or floor finishes such as plaster or cement mortar floor toppings are scheduled on the drawings and specified in other specification sections, delete paragraphs entitled "Protective Finish Coating," "Walls and Columns" and "Floors," as appropriate. Walls and floors not specified and/or scheduled to receive other finishes must receive the Protective Finish Coating. Waterproofed surfaces which are not to receive plaster, floor topping, or other finish shall receive a protective coating applied directly over the bond coat. [3.4.5.1 Walls and Columns After application of bond coat, apply protective coating to minimum thickness of 3 mm 1/8 inch. Mix coating in proportions by volume of one part portland cement to two and one-half parts fine aggregate conforming to ASTM C 33 . Float to smooth, even surface. ][3.4.5.2 Floors After application of bond coat, apply protective topping of 38 mm 1 1/2 inch minimum thickness, consisting of one part portland cement, one part sand, and two parts fine aggregate conforming to ASTM C 33 and proportioned by volume. Mixing shall be done in a mechanical batching-type mixer for not less than 3 minutes after all materials have been included, using not more than 15 liters 4 gallons of water for each bag of cement when floating is done by machine and 19 liters 5 gallons for each bag of cement when floating is done by hand. After screeding to established finish lines and levels, compact and then float with wood floats or power floating machines. After finish has sufficiently hardened to prevent excess fine material from being worked to surface, steel trowel to obtain smooth surface free from defects and blemishes. After topping has set to ring, trowel again to a burnished finish. ][3.4.5.3 Curing Protect finish coating from loss of moisture and cure by periodic fog spraying and cover with impervious sheeting or other approved method until coating has set. ]]