1、*USACE / NAVFAC / AFCESA / NASA UFGS-07 55 00 (August 2009)-Preparing Activity: USACE SupersedingUFGS-07 55 00 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2009*SECTION 07 55 00PROTECTED MEMBRANE ROOFING (PMR)08/09*NOTE: This guide specification
2、 covers the requirements for protected membrane roof system.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 res
3、pective 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 In
4、ternet.Recommended changes to a UFGS should be submitted as a Criteria Change Request (CCR).This guide specification includes tailoring options for paver ballast, and aggregate ballast. Selection or deselection of a tailoring option will include or exclude that option in the section, but editing the
5、 resulting section to fit the project is still required.*PART 1 GENERAL*NOTE: This specification covers a roofing system in which the membrane is protected by an overlay of extruded polystyrene insulation, a filter fabric, and a layer of ballast on top. The surface of overhangs must be sealed to pre
6、vent leakage of air and, therefore, uplift. For additional guidance on PMR, the designer should consult the National Roofing Contractors Association (NRCA) Roofing and Waterproofing Manual.SECTION 07 55 00 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
7、m IHS-,-,-Roof must be constructed with a minimum slope of 1 to 48, and a maximum slope of 1 to 6. Drainage is critical as the insulation will float if submerged and not adequately ballasted. Where internal drains are not used, ice dams may occur at eaves and scuppers. For guidance on flashings and
8、drainage details, the designers should consult the SMACNA “Architectural Sheet Metal Manual.“Undersides of the deck, including overhangs, should be sealed when using loose-laid protected membrane to prevent wind from pressurizing the underside of the membrane.Bituminous membranes should be flood-coa
9、ted and not surfaced with aggregate. Polystyrene should not be placed in contact with asphalt.Except where exposed drain baskets pose a safety hazard, there must be an opening in the insulation, filter fabric, and ballast above each drain basket. Pavers above hidden drains will be marked so that the
10、 drains can be inspected periodically.Designer should require materials, products, and innovative construction methods and techniques which are environmentally sensitive, take advantage of recycling and conserve natural resources.*1.1 REFERENCES*NOTE: This paragraph is used to list the publications
11、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 Wizards Check Reference feature when you add a RID outside of the Sections Reference Artic
12、le to automatically place the reference in the Reference Article. Also use the Reference Wizards 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 t
13、he 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.SECTION 07 55 00 Page 2Provided by IHSNot for ResaleNo reproduction or networking permitted without licen
14、se from IHS-,-,-ASTM INTERNATIONAL (ASTM)ASTM C 1177/C 1177M (2008) Standard Specification for Glass Mat Gypsum Substrate for Use as SheathingASTM C 1396/C 1396M (2006a) Standard Specification for Gypsum BoardASTM C 29/C 29M (2007) Standard Test Method for Bulk Density (“Unit Weight“) and Voids in A
15、ggregateASTM C 578 (2009e1) Standard Specification for Rigid, Cellular Polystyrene Thermal InsulationASTM C 726 (2005e1) Mineral Fiber Roof Insulation BoardASTM D 448 (2008) Sizes of Aggregate for Road and Bridge ConstructionASTM D 4751 (2004) Determining Apparent Opening Size of a GeotextileASTM D
16、5034 (2009) Breaking Strength and Elongation of Textile Fabrics (Grab Test)ASTM D 751 (2006) Coated FabricsFM GLOBAL (FM)FM P7825a (2005) Approval Guide Fire ProtectionFM P9513 (2002) Specialist Data Book Set for Roofing Contractors; contains 1-22 (2001), 1-28 (2002), 1-29 (2002), 1-28R/1-29R (1998)
17、, 1-30 (2000), 1-31 (2000), 1-32 (2000), 1-33 (2000), 1-34 (2001), 1-49 (2000), 1-52 (2000), 1-54 (2001)SINGLE PLY ROOFING INDUSTRY (SPRI)SPRI RP-4 (2002) Wind Design Standard for Ballasted Single-Ply Roofing SystemsUNDERWRITERS LABORATORIES (UL)UL 580 (2006; Rev thru Jul 2009) Tests for Uplift Resi
18、stance of Roof AssembliesUL 790 (2004; Rev thru Oct 2008) Test Methods for Fire Tests of Roof Coverings1.2 SYSTEM DESCRIPTION*NOTE: Design should be in accordance with SPRI RP-4. Fully adhered protected membranes have performed well in hurricane areas when ballasted as SECTION 07 55 00 Page 3Provide
19、d by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-specified in SPRI RP-4. Roof deck must be adequate to support weight of ballast as dead load.*Wind uplift resistance of the complete roof assembly shall be rated Class I-60 90 in accordance with UL 580. Wind r
20、esistance of loose-laid ballasted system shall be in accordance with FM P9513 SPRI RP-4.1.3 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 b
21、e 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 Cont
22、ractors 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 indica
23、te 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.
24、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 ha
25、ving a “G“ designation are for Contractor Quality Control approval. information only. When used, a designation following the “G“ designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:SD-02 Sh
26、op DrawingsRoof AssemblyDrawings required for the membrane, modified to include the complete PMR assembly.SD-07 CertificatesSECTION 07 55 00 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Material and EquipmentCertificates of compliance for ma
27、terial and equipment, as specified.QualificationsDocumentation of 2 year experience with PMR systems, as specified.1.4 QUALITY ASSURANCE1.4.1 Material and Equipmentsubmit material suppliers or equipment manufacturers statement that the supplied insulation, filter fabric and membrane materials meet s
28、pecified requirements. Each certificate shall be signed by an official authorized to certify on behalf of material supplier or product manufacturer and shall identify quantity and date or dates of shipment or delivery to which the certificates apply.1.4.2 QualificationsSubmit documentation verifying
29、 a minimum of 2 years experience with PMR systems and certification by the PMR manufacturer as an approved Installer for the specified PMR system.1.4.3 Fire ResistanceThe completed roof system shall be rated Class A as determined by UL 790 or Class I as determined by FM P7825a. Compliance of each co
30、mponent of the roofing system shall be evidenced by the label or written certification from the manufacturer.1.5 DELIVERY, STORAGE, AND HANDLINGStore insulation away from areas where welding is being performed or where contact with open flames is possible. Shield insulation from extended exposure to
31、 sunlight. Remove materials damaged by moisture from the site. Ballast shall not be stored on the roof.PART 2 PRODUCTS*NOTE: Insulation to be placed beneath the membrane is described in Section 07 22 00 ROOF AND DECK INSULATION.*2.1 UNDERLAYMENT*NOTE: Loose-laid membrane will not be placed directly
32、on concrete or other hard, potentially rough deck.*Underlayment may be concrete any insulation which is suitable for the SECTION 07 55 00 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-particular membrane mineral fiberboard in accordance with
33、ASTM C 726 or gypsum board in accordance with ASTM C 1396/C 1396M, 16 mm 5/8 inch thick or glass mat gypsum roof board in accordance with ASTM C 1177/C 1177M, 6.35 mm 1/4 inch 12.7 mm 1/2 inch 15.87 mm 5/8 inch.2.2 ROOF MEMBRANE*NOTE: Specify built-up roof, EPDM, modified bitumen roofing, or PVC roo
34、f membrane, or allow Contractor to choose from these options. Delete each inapplicable roof membrane. When editing these paragraphs, delete aggregate surfacing, walkways, and types of insulation not used. Specify Section 07 51 13 ASPHALT BUILT-UP ROOFING when membrane is applied directly to concrete
35、 deck, and require two final bitumen flood coats, each coat providing 1.5 kg of bitumen per square meter (30 pounds per square).*Roof membrane shall be in accordance with Section 07 51 13 ASPHALT BUILT-UP ROOFING07 53 23 ETHYLENE-PROPYLENE-DIENE-MONOMER ROOFING07 54 19 POLYVINYL CHLORIDE (PVC) ROOFI
36、NG or 07 52 00 M0DIFIED BITUMENOUS MEMBRANE ROOFING.2.3 INSULATION ABOVE THE MEMBRANE*NOTE: Determine the required R-value and show the R-value at the appropriate detail on the drawings. The required R-value will never be less than that used in the Energy Budget Analysis.Specify a vapor retarder onl
37、y when required by calculations made as specified in ASTM Manual 18 “Moisture Control in Buildings“ or in the CRREL-EC report “Vapor Retarders for Membrane Roofing Systems.“*Insulation placed above the membrane shall be extruded polystyrene, or extruded polystyrene with a mortar face. Insulation sha
38、ll be a standard product of the manufacturer, and shall be factory marked with the manufacturers name or trade mark, the material specification number, the R-value at 24 degrees C 75 degrees F, and the thickness. Boards shall be marked individually. The thermal resistance of the insulation shall be
39、not less than the R-value shown on the drawings. Insulation shall conform to ASTM C 578, Type V, VI or VII and shall be intended by the manufacturer for use above a protected roof membrane. Bottom layer of insulation shall provide drainage paths, mostly parallel to the slope, between insulation and
40、membrane. Top surface of mortar-faced insulation shall be 10 mm 3/8 inch thick portland cement latex mortar having minimum properties as follows: specific gravity: 2.0, compressive strength: 20.7 MPa 3000 psi and bond strength to insulation: 69 kPa 10 psi. Top layer of insulation may have ribbed top
41、 surfaces when flat-bottom pavers are used as ballast. Comply with EPA requirements in accordance with Section 01 62 35 RECYCLED / RECOVERED MATERIALS.SECTION 07 55 00 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.4 FILTER FABRICFilter fabr
42、ic shall be either woven or non-woven pervious sheet of long chain polymeric filaments or yarns such as polypropylene, polyethylene, polyester, polyamide, or polyvinylidene-chloride, formed into a pattern with distinct and measurable openings. The filter fabric shall provide an ASTM D 4751 Apparent
43、Opening Size (AOS) no finer than the 0.125 mm No. 120 sieve and no coarser than the 0.212 mm No. 70 sieve. Edges of fabric shall be selvaged or otherwise finished to prevent raveling. Fabric shall have minimum weight of 102 gms/sq. m 3 oz/sq. yard and shall conform to the following table:Property Te
44、st Procedure ResultTensile strength ASTM D 5034 Grab test 29 kg/25 mmmethod using 25 mm square minimum in anyjaws and a travel rate of principal5 mm per sec directionPuncture strength ASTM D 751 - Tension 18 kgtesting machine with ring minimum loadclamp; steel ball replacedwith a 8 mm diameter solidsteel cy
