ARMY UFGS-04 01 00 91-2012 RESTORATION AND CLEANING OF MASONRY IN HISTORIC STRUCTURES.pdf

1、*USACE / NAVFAC / AFCESA / NASA UFGS-04 01 00.91 (May 2012)-Preparing Activity: USACE SupersedingUFGS-04 01 40 (November 2009)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated April 2012*SECTION TABLE OF CONTENTSDIVISION 04 - MASONRYSECTION 04 01 00.91RESTORATION AND

2、 CLEANING OF MASONRY IN HISTORIC STRUCTURES05/12PART 1 GENERAL1.1 GENERAL REQUIREMENTS1.2 REFERENCES1.3 DEFINITIONS1.3.1 Aggregates1.3.2 Biocides1.3.3 Binder1.3.4 Dispersed Lime Crack Injection1.3.5 Consolidant1.3.6 Dutchman1.3.7 Insitu1.3.8 Joint Sealant1.3.9 Lead Flashing1.3.10 Lime Wash1.3.11 Moc

3、kup1.3.12 Mortar1.3.13 New Elements1.3.14 Patch1.3.15 Remediate1.3.16 Remove1.3.17 Replace1.3.18 Repoint1.3.19 Retool1.3.20 Stucco1.3.21 Surface Treatment1.3.22 Test Panel1.3.23 Tuckpointing1.3.24 Water repellent1.3.25 Wall System1.3.26 Masonry Treatment Requirement (MTR)1.3.27 Saturated Surface Dry

4、 (SSD)1.4 PRE-CONSTRUCTION CONFERENCE1.5 SUBMITTALS1.6 QUALITY CONTROL1.6.1 Quality Control PlanSECTION 04 01 00.91 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.6.2 Qualifications1.6.2.1 Historic Masonry Consultant1.6.2.2 Masonry Firm1.6.2

5、.3 Field Supervision1.6.2.4 Masonry Applicator1.6.3 Project Training Definition and Use1.6.4 Documentation1.6.5 Cleaning and Restoration Mock-ups1.6.5.1 Cleaning and Restoration Methods1.6.5.2 Cleaning Products and Procedures1.6.6 Masonry Mock-ups1.6.6.1 Repointing1.6.6.2 Retooling Stone Masonry Ins

6、itu1.6.6.3 Masonry Removal and Replacement1.6.6.4 Substitute Repair Material1.6.6.5 Crack Repair1.6.6.6 Surface Treatments1.6.6.7 New Masonry Elements1.7 DELIVERY, STORAGE, AND HANDLING1.8 FIELD CONDITIONS1.8.1 General Ambient Conditions1.8.2 Masonry Installation Conditions1.9 WARRANTIES1.9.1 Cleani

7、ng Warranty1.9.2 Repair WarrantyPART 2 PRODUCTS2.1 CLEANING MATERIALS2.1.1 Paint Removers2.1.2 Chemical Cleaners2.1.3 Biocides2.1.4 Liquid Strippable Masking Agent2.1.5 Cleaning Implements2.1.6 Water2.2 REPAIR MATERIALS2.2.1 Mortar and Stucco2.2.1.1 Matching2.2.1.2 Binder Content of Historic Mortar2

8、.2.1.3 Crack Injection2.2.2 Replacement Masonry Materials2.2.2.1 Replacement Brick2.2.2.2 Replacement Stone2.2.2.3 Replacement Terra Cotta2.2.2.4 Replacement Architectural Precast Stone2.2.3 Masonry Elements2.2.3.1 Epoxy Anchor Adhesives2.2.3.2 Metal attachments2.2.3.3 Lead Flashing2.2.4 Surface Tre

9、atments2.2.4.1 Consolidants2.2.4.2 Water Repellents2.3 EQUIPMENT2.3.1 Cleaning Equipment2.3.1.1 Sandblasting2.3.1.2 Water Blasting2.3.2 Spray Equipment2.3.3 Alternative Blasting Methods2.3.4 Drilling EquipmentSECTION 04 01 00.91 Page 2Provided by IHSNot for ResaleNo reproduction or networking permit

10、ted without license from IHS-,-,-2.3.5 Compressed Air SuppliesPART 3 EXECUTION3.1 EVALUATION AND ANALYSIS3.1.1 Mortar Analysis3.1.2 Field (Insitu) Mortar Analysis3.1.3 Taking and Preparation of Samples3.1.3.1 Laboratory Mortar Analysis Equipment3.1.3.2 Laboratory Masonry Unit Evaluation Equipment3.1

11、.4 Binder Analysis3.1.5 Aggregate Analysis3.2 PREPARATION3.2.1 Material Handling and Associated Equipment3.2.1.1 Mixing, Transporting, and Placing Job Materials3.2.1.2 Associated Equipment3.2.2 Protection3.2.2.1 Interior Protection3.2.2.2 Worker Exposures3.3 EQUIPMENT AND TECHNIQUES DEMONSTRATION3.4

12、 MASONRY CLEANING3.4.1 Chemical Cleaners3.4.2 Test Patches3.4.3 Paint Removal3.4.4 Water Cleaning3.4.4.1 Pressure Spraying3.4.4.2 Hand Scrubbing3.4.4.3 Rinsing3.4.5 Chemical Cleaning3.4.5.1 Surface Prewetting3.4.5.2 Acidic Chemical Cleaning3.4.5.3 Alkaline Chemical Cleaning - Prewash Phase3.4.5.4 Al

13、kaline Chemical Cleaning - Afterwash Phase3.4.5.5 pH Testing3.5 MASONRY REPAIR3.5.1 Deterioration Investitgation3.5.2 Repointing Masonry3.5.2.1 Wall Preparation3.5.2.2 Mixing and Installation3.5.3 Presoaking Masonry / Mortar Consistency / Lifts3.5.4 Compression / Joint Finish / Curing3.5.5 Protectio

14、n3.5.6 Retooling Stone Masonry Insitu3.5.7 Masonry Removal and Replacement3.5.8 Substitute Material Repair3.5.8.1 Areas To Be Removed3.5.8.2 Application of Substitute Repair Materials3.5.8.3 Masonry and Substitute Material Repair Finishes and Color3.5.8.4 Patch Anchors3.5.8.5 Holes3.5.8.6 Anchor Ins

15、tallation3.5.8.7 Cleanup3.5.8.8 Dutchman Repairs3.5.9 Crack Injection3.5.9.1 Application of Dispersed Hydrated Lime (DHL)3.5.9.2 Tools and Equipment3.5.10 Surface Treatments3.5.10.1 Stucco3.5.10.2 LimewashesSECTION 04 01 00.91 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitte

16、d without license from IHS-,-,-3.5.10.3 Water Infiltration3.5.10.4 Stone Consolidants3.6 NEW ELEMENTS3.6.1 Structural Upgrades3.6.2 Joint Sealant and Lead Flashing3.7 FINAL CLEANING3.8 PROTECTION OF WORK3.9 DEFECTIVE WORK3.10 FINAL INSPECTION- End of Section Table of Contents -SECTION 04 01 00.91 Pa

17、ge 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-04 01 00.91 (May 2012)-Preparing Activity: USACE SupersedingUFGS-04 01 40 (November 2009)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with

18、UMRL dated April 2012*SECTION 04 01 00.91RESTORATION AND CLEANING OF MASONRY IN HISTORIC STRUCTURES05/12*NOTE: This guide specification covers the requirements for restoration and cleaning of masonry in historic structures.Adhere to UFC 1-300-02 Unified Facilities Guide Specifications (UFGS) Format

19、Standard when editing this guide specification or preparing new project specification sections. 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

20、and requirements not required in respective project, whether or not brackets are present.Comments, suggestions and recommended changes for this guide specification are welcome and should be submitted as a Criteria Change Request (CCR).*PART 1 GENERAL*NOTE: Where the words “as indicated“ are used, en

21、sure that sizes, positions and other designated information are indicated on the design drawings.The following publications, from the United States Department of the Interior - National Park Service, provide useful guidance in the restoration of historic masonry and may be included as addenda to the

22、 specifications.The Secretary of the Interiors Standards for the Treatment of Historic Properties with Guidelines for Preserving, Rehabilitating, Restoring, and Reconstructing Historic Buildings (1995).SECTION 04 01 00.91 Page 5Provided by IHSNot for ResaleNo reproduction or networking permitted wit

23、hout license from IHS-,-,-Preservation Brief #1 - (2000) Assessing Cleaning and Water-Repellent Treatments for Historic Masonry BuildingsPreservation Brief #2 - (1998) Repointing Mortar Joints in Historic Brick BuildingsPreservation Brief #6 - (1979) Dangers of Abrasive Cleaning to Historic Building

24、sPreservation Brief #7 - (1979) The Preservation of Historic Glazed Architectural Terra-CottaPreservation Brief #22 - (1990) The Preservation and Repair of Historic StuccoPreservation Brief #38 - (1995) Removing Graffiti from Historic Masonry*1.1 GENERAL REQUIREMENTSIt is the intent of this specific

25、ation to protect historic structures to the greatest extent possible. Use the gentlest means to perform the work and take the greatest of care to ensure that the historic materials are not damaged in the process of the work. In addition to requirements in this section, comply with NPS Hist Prop.1.2

26、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 Wizards Check Reference f

27、eature when you add a RID outside of the Sections Reference Article 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 p

28、roject 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.AMERICAN CONFERENCE OF GOVERNMENTAL INDU

29、STRIAL HYGIENISTS (ACGIH)ACGIH 0100 (2001; Supplements 2002-2008) Documentation of the Threshold Limit SECTION 04 01 00.91 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Values and Biological Exposure IndicesASTM INTERNATIONAL (ASTM)ASTM A36/A

30、36M (2008) Standard Specification for Carbon Structural SteelASTM C1324 (2010) Standard Test Method for Examination and Analysis of Hardened Masonry MortarASTM C1364 (2010) Standard Specification for Architectural Cast StoneASTM C144 (2011) Standard Specification for Aggregate for Masonry MortarASTM

31、 C1489 (2001; E 2008; R 2008) Standard Specification for Lime Putty for Structural PurposesASTM C170/C170M (2009) Standard Test Method for Compressive Strength of Dimension StoneASTM C207 (2006; R 2011) Standard Specification for Hydrated Lime for Masonry PurposesASTM C216 (2011) Facing Brick (Solid

32、 Masonry Units Made from Clay or Shale)ASTM C34 (2010) Structural Clay Load-Bearing Wall TileASTM C67 (2011) Standard Test Methods for Sampling and Testing Brick and Structural Clay TileASTM C881/C881M (2010) Standard Specification for Epoxy-Resin-Base Bonding Systems for ConcreteASTM E11 (2009e1) W

33、ire Cloth and Sieves for Testing PurposesASTM E2659 (2009) Standard Practice for Certificate ProgramsASTM E96/E96M (2010) Standard Test Methods for Water Vapor Transmission of MaterialsNATIONAL PARK SERVICE (NPS)NPS Hist Prop (1995) National Standards for the Treatment of Historic Properties with Gu

34、idelines for Preserving, Rehabilitating, Restoring, and Reconstructing Historic BuildingsNPS TPS Brief 1 (2000) Assessing Cleaning and Water-Repellent Treatments for Historic SECTION 04 01 00.91 Page 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M

35、asonry BuildingsNPS TPS Brief 2 (1998) Repointing Mortar Joints in Historic Masonry BuildingsU.S. GENERAL SERVICES ADMINISTRATION (GSA)GSA HPTP 07656-01 Installing Lead Stone Flashing to Protect Masonry Joints1.3 DEFINITIONSTerms are defined below as applicable to this project.1.3.1 AggregatesThe sa

36、nd component of mortar.1.3.2 BiocidesA chemical treatment meant to eliminate organic growth on the masonry units and mortar and prohibit re-growth.1.3.3 BinderThe component of mortar that binds together the aggregate particles into a cohesive material.1.3.4 Dispersed Lime Crack InjectionA repair met

37、hod in which dispersed lime material is injected into small hairline cracks by use of needle or syringe.1.3.5 ConsolidantA chemical product meant to strengthen loose or deteriorated stone.1.3.6 DutchmanA repair method in which deteriorated stone is removed in part and replaced with salvaged, harvest

38、ed or new stone to make a seamless patch.1.3.7 InsituA term referencing a repair procedure in which the masonry units and mortar remain in place and are repaired without removal from the wall system1.3.8 Joint SealantA flexible, chemical product that is used to create a weather-tight seal at the bou

39、ndary of masonry units with other units or dissimilar materials.1.3.9 Lead FlashingAn extruded lead material that is inserted into joints to assist in precluding water entry into the masonry.SECTION 04 01 00.91 Page 8Provided by IHSNot for ResaleNo reproduction or networking permitted without licens

40、e from IHS-,-,-1.3.10 Lime WashA protective surface treatment comprised of calcium hydroxide particles in suspension in water, along with small amounts of calcium carbonate, silica particles and other minerals.1.3.11 MockupSpecific area on the building approved by Contracting Officer to demonstrate

41、the contractors ability to apply, match and install specified materials.1.3.12 MortarA mixture of binders, aggregates, and pigments used for reconstruction, repointing or stucco applications.1.3.13 New ElementsNew, non-historic materials added to masonry structures to aid in their ability to resist

42、loads (typically seismic) or to resist water infiltration.1.3.14 PatchThe use of substitute repair materials to treat damaged or deteriorated masonry units insitu.1.3.15 RemediateThe practice of restoring a historic masonry structure and its component materials with the intent to maintain the origin

43、al fabric to the greatest extent possible.1.3.16 RemoveSpecifically for historic masonry materials, the term means to detach an item from existing construction to the limits indicated.1.3.17 ReplaceTo reinstall an item in its original position (or where indicated) after remedial treatment, or to dup

44、licate and reinstall an entire item with new material; with the original item serving as the pattern for creating the duplicate.1.3.18 RepointTo remove existing mortar joints to the specified depth and replace with a mortar that matches in color, texture, and performance with maximum breathability,

45、bond, and flexibility to accommodate movement.1.3.19 RetoolA repair method in which a chisel is used to re-create the surrounding stone texture finish by removing loose pieces of stone.1.3.20 StuccoA mixture of binders and aggregates and animal hair or fibers used for the SECTION 04 01 00.91 Page 9Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-repair treatment of original stucco.1.3.21 Surface TreatmentThe application of traditional materials or contemporary chemical products