ARMY UFGS-08 52 70-2009 WOOD WINDOWS - REPAIR AND REHABILITATION《木窗 修理和复原》.pdf

1、*USACE / NAVFAC / AFCESA / NASA UFGS-08 52 70 (August 2009)-Preparing Activity: USACE SupersedingUFGS-08 52 70 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2009*SECTION TABLE OF CONTENTSDIVISION 08 - OPENINGSSECTION 08 52 70WOOD WINDOWS - REPAIR

2、 AND REHABILITATION08/09PART 1 GENERAL1.1 REFERENCES1.2 SYSTEM DESCRIPTION1.3 SUBMITTALS1.4 QUALITY ASSURANCE1.5 DELIVERY, STORAGE, AND HANDLINGPART 2 PRODUCTS2.1 MATERIALS2.2 WOOD2.3 GLASS AND GLAZING2.4 HARDWARE2.5 FASTENERS2.6 GLAZING COMPOUND2.7 GLAZING POINTS2.8 EPOXY CONSOLIDANTS2.8.1 Liquid C

3、onsolidant2.8.2 Epoxy PastePART 3 EXECUTION3.1 EVALUATION3.2 REPAIRS3.2.1 Example Window3.2.2 Sash Removal3.2.3 Paint Removal3.2.4 Wood Repair3.2.5 Epoxy Wood Repair3.2.5.1 Epoxy Liquid Wood Consolidant3.2.5.2 Epoxy Paste3.2.6 Wood Replacement3.2.7 Hardware3.2.8 Glazing3.2.9 Operating SystemSECTION

4、08 52 70 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.10 Weatherstripping and Moldings3.3 PAINTING PREPARATION3.4 PAINTING3.5 REASSEMBLY3.6 ADJUSTMENTS3.7 CLEANING- End of Section Table of Contents -SECTION 08 52 70 Page 2Provided by IHS

5、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-08 52 70 (August 2009)-Preparing Activity: USACE SupersedingUFGS-08 52 70 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated July 2009*S

6、ECTION 08 52 70WOOD WINDOWS - REPAIR AND REHABILITATION08/09*NOTE: This guide specification covers the requirements for repair and rehabilitation of wood windows in historic buildings.Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed

7、 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 s

8、pecification. 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).*PART 1 GENERAL1.1 REFERENCES*NOTE: This paragraph is used to list the publications

9、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

10、le to automatically place the reference in the Reference Article. Also use the Reference Wizards Check Reference feature to update SECTION 08 52 70 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-the issue dates.References not used in the text

11、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 d

12、esignation only.ASTM INTERNATIONAL (ASTM)ASTM C 1184 (2005) Standard Specification for Structural Silicone Sealants1.2 SYSTEM DESCRIPTIONThe Contractor shall repair wood windows as indicated, and shall return them to proper operation and sound condition.1.3 SUBMITTALS*NOTE: Review submittal descript

13、ion (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 Gov

14、ernment 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 Contractors Quality Control system. Only add a “G” if the submittal is sufficiently important or complex in context of the project.For sub

15、mittals 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“

16、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 Fo

17、rce and NASA projects, or choose the second bracketed item for Army projects.*Government approval is required for submittals with a “G“ designation; SECTION 08 52 70 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-submittals not having a “G“ de

18、signation 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 Shop DrawingsSh

19、op Drawings; G; G, _Shop drawings as specified.SD-03 Product DataHardwareWeatherstrippingManufacturers installation instructions for each type of hardware and weatherstripping.QualificationsDocumentation showing qualifications of personnel proposed to perform the window repair and rehabilitation wor

20、k, and a listing identifying prior installations completed by the Contractor.SD-04 SamplesHardwareRepresentative sample of each type of hardware with identifying tags.MoldingsA 300 mm 12 inch long piece of each molding type required for each window and casing with specified finish.WeatherstrippingA

21、300 mm 12 inch long sample of each type of weatherstripping required with fasteners.1.4 QUALITY ASSURANCEa. Provide qualified workers trained and experienced in repairing, restoring, replicating, and replacing windows in historic buildings; submit documentation of their Qualifications during 5 conse

22、cutive years of work of this type; and a list of installations made identifying when, where and for whom the installations were made.b. Submit Shop Drawings indicating elevations of units, full-size sections, fastenings, methods of installation and anchorage, method of glazing, locations of operatin

23、g hardware, mullion details, method and material for weatherstripping, insect screen, details, connections with other work and window schedules showing location of each window unit.SECTION 08 52 70 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-

24、,-1.5 DELIVERY, STORAGE, AND HANDLINGMaterials shall be stored out of contact with the ground and under weathertight covering.PART 2 PRODUCTS*NOTE: Deteriorated historic windows should be repaired rather than replaced wherever possible. In the event replacement is necessary, the new windows should m

25、atch the historic ones in design, color, size, configuration, reflective qualities, shadow lines, detail, and material. Only when it is not feasible to match the historic fabric should substitute window material be considered.*2.1 MATERIALSReuse existing materials whenever possible in the repair and

26、 rehabilitation of historic wood windows. This includes all wood elements, hardware and glazing that are determined to be of historic significance. Replace window elements with new material only when originals are so deteriorated as to prohibit their useful function.2.2 WOODWood used to replace dete

27、riorated window members shall be of the same species and grade as the original, unless otherwise noted. Finger-jointed stock may be used for interior casing and trim only where scheduled to be painted.2.3 GLASS AND GLAZINGReuse existing intact original glass. Any removed lights shall be reused in th

28、eir original frames and positions. New glass and glazing materials shall conform to Section 08 81 00 GLAZING.2.4 HARDWAREReuse existing original hardware, when it is salvageable. Replacement hardware shall match original in design, material, and finish.2.5 FASTENERSFasteners shall be stainless steel

29、, galvanized, or non-ferrous metal.2.6 GLAZING COMPOUNDProvide glazing compound for single pane glass which is oil-based, non-staining and non-bleeding. Existing insulated glass units shall be reglazed with silicone sealant complying with ASTM C 1184 and compatible with the unit seal on the glass un

30、it.2.7 GLAZING POINTSGlazing points shall be stainless steel or galvanized steel.SECTION 08 52 70 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.8 EPOXY CONSOLIDANTS2.8.1 Liquid ConsolidantLiquid wood consolidant shall consist of a two-part,

31、 low-viscosity liquid epoxy that meets the criteria of Table A.2.8.2 Epoxy PasteEpoxy paste shall consist of a two-part, thixotropic paste that meets the criteria of Table A.TABLE ALIQUID CONSOLIDANT EPOXY PASTE_ _Properties Low-Viscosity Liquid No-Slump, Thixotropic PasteToxicity Low Very LowToxici

32、ty Cured Non-Toxic Non-ToxicRatios 1:1 by Volume 1:1 by VolumePot Life Room Temp. 30 min. minimum 50 min. minimumHardening Room Temp. 1 hr. or longer 1 hr. or longerHardening 60 deg. C 16 min. or less 18 min. or lessViscosity Poises 22 deg. C 4.7 max. Thixotropic pasteSolids 95% min. 98% min.Tensile

33、 Strength 26 MPa 4000 psi 16.2 MPa 2500 psiElongation (%) 50 4PART 3 EXECUTION3.1 EVALUATIONPerform a complete evaluation survey of the existing conditions of each wood window to determine the extent of repairs necessary. The evaluation survey may be in the form of a schedule and shall note at a min

34、imum:a. Window location.b. Condition of the paint.c. Condition of the frame and sill.d. Condition of the interior and exterior trim.e. Condition of the sash (including rails, stiles, and muntins).SECTION 08 52 70 Page 7Provided by IHSNot for ResaleNo reproduction or networking permitted without lice

35、nse from IHS-,-,-f. Glazing problems.g. Window hardware and operating system.h. The overall condition of the window.3.2 REPAIRS3.2.1 Example WindowPrepare an existing window of each type to serve as an example of the quality of repairs to be provided for inspection and approval by the Contracting Of

36、ficer.3.2.2 Sash RemovalRemove the interior stops first, in a method so as to not scar the wood. Connecting hardware and operating mechanisms shall then be detached and the sash shall be removed from the frame. Identify removed sashes and frames as to location to assure reinstallation in their origi

37、nal positions. Windows with counter-weight systems shall have the sash cords detached from the sides of the sash and their ends pinned with a nail or tied in a knot to prevent them from falling into the weight pocket; the lower sash can then be removed. Remove the parting bead so as to not scar the

38、wood. Install plastic covering or plywood to cover the window opening during repairs.3.2.3 Paint Removal*NOTE: When testing determines that paint on windows contains lead, the following sentence will be added to the beginning of the paragraph: “Paint removal shall comply with the procedures describe

39、d in Section 02 82 33.13 20 REMOVAL/CONTROL AND DISPOSAL OF PAINT WITH LEAD.“*Areas on frame, sill, sash and muntins where paint or varnish has peeled, alligatored, blistered or crazed shall have paint removed to bare wood or first sound paint layer, using non-destructive means such as a chemical st

40、ripper or heat gun. If chemical strippers are used, neutralize wood after stripping to a litmus pH of 5 to 8.5. Allow wood to dry to a moisture content of 8 to 12 percent before repainting. If heat methods are used for paint removal, protect glass from sudden temperature change to avoid breakage.3.2

41、.4 Wood RepairRemove badly decayed areas (with more than 30 percent wood decayed) from wood sash, sill, frame, and trim assemblies. Moderately decayed areas (less than 30 percent decayed), weathered, or gouged wood shall be patched with approved patching compounds, and shall be sanded smooth. Intact

42、 sash rails and stiles that are loose shall be repaired with new dowels to make joints tight.SECTION 08 52 70 Page 8Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2.5 Epoxy Wood RepairApply epoxy wood repair materials in accordance with manufactur

43、ers written instructions. Health and safety instructions shall be followed in accordance with the manufacturers instructions. The source or cause of wood decay shall be identified and corrected prior to application of patching materials. Wet wood shall be completely dried to a moisture content of 8

44、to 12 percent to its full depth before patching. Wood that is to be patched shall be clean of dust, grease, and loose paint. Use clean mixing equipment to avoid contamination. Mix and proportions shall be as directed by the manufacturer. Batches shall be only large enough to complete the specific job intended. Patching materials shall be completely cured before painting or reinstallation of patched pieces.3.2.5.1 Epoxy Liquid Wood ConsolidantEpoxy liquid wood consolidant shall be used to pe