1、Designation: C1780 13C1780 14Standard Practice forInstallation Methods for Adhered Manufactured StoneMasonry Veneer1This standard is issued under the fixed designation C1780; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、 of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This practice is intended to provide accepted procedures to designers and installers of adhered manufacture
3、d stone masonryveneer in residential and commercial construction. This information is meant to complement the specific installation instructionsprovided by manufacturers of adhered manufactured stone masonry veneers and recognized building codes, but is not meant toreplace them. This practice does n
4、ot address installation methods or techniques for all materials in the building envelope. Thispractice covers the installation of adhered manufactured stone masonry veneer (AMSMV) units for application as adhered veneerto exterior and interior walls, columns, landscape structures and other structure
5、s suitable to receive adhered veneer. The unitsincluded in this practice are manufactured to meet the requirements of Specification C1670. This practice is limited to theinstallation of AMSMV units. This practice does not cover all flashing or moisture management requirements. Refer to theapplicable
6、 building code and project documents for additional flashing and moisture management requirements.NOTE 1The Masonry Veneer Manufacturers Association (MVMA) publication Installation Guide for Adhered Concrete Masonry Veneer providesgenerally accepted methods and details for installation and flashing.
7、1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.3 All workmanship and materials related to the installation of AMSMV adhered manu
8、factured stone masonry veneer unitsshall meet the requirements of the contract documents and building code having jurisdiction over the project.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this stand
9、ard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin andtissue upon prolonged exposure.2)2. Referenced Documents2.1 ASTM Standards
10、:3C90 Specification for Loadbearing Concrete Masonry UnitsC270 Specification for Mortar for Unit MasonryC482 Test Method for Bond Strength of Ceramic Tile to Portland Cement PasteC847 Specification for Metal LathC926 Specification for Application of Portland Cement-Based PlasterC932 Specification fo
11、r Surface-Applied Bonding Compounds for Exterior PlasteringC933 Specification for Welded Wire LathC979 Specification for Pigments for Integrally Colored ConcreteC1032 Specification for Woven Wire Plaster BaseC1059 Specification for Latex Agents for Bonding Fresh To Hardened ConcreteC1063 Specificati
12、on for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based PlasterC1180 Terminology of Mortar and Grout for Unit Masonry1 This practice is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommitte
13、e C15.05 on MasonryAssemblies.Current edition approved June 1, 2013July 1, 2014. Published June 2013August 2014. Originally approved in 2013. Last previous edition approved in 2013 as C1780 13. DOI: 10.1520/C17801310.1520/C1780-14.2 Annual Book of ASTM Standards. Vol 04.01. See the section on Safety
14、 Precautions in the Manual of Cement Testing.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is
15、 not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropr
16、iate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
17、1C1232 Terminology of MasonryC1384 Specification for Admixtures for Masonry MortarsC1670 Specification Forfor Adhered Manufactured Stone Masonry Veneer (AMSMV) UnitsC1714 Specification for Preblended Dry Mortar Mix for Unit MasonryE2556/E2556M Specification for Vapor Permeable Flexible Sheet Water-R
18、esistive Barriers Intended for MechanicalAttachment2.2 Other Standards:4TMS 402/ACI 530/ASCE 5 Building Code Requirements for Masonry StructuresTMS 602/ACI 530.1/ASCE 6 Specification for Masonry Structures2.3 ANSI Standards:5ANSI A118.1A118.1-2013.1 American National Standard Specifications for Dry-
19、Set Portland Cement MortarANSI A118.4A118.4-2013.1 American National Standard Specifications for Latex-Portland Modified Dry-Set Cement Mortar2.4 ICRI International Concrete Repair Institute:6No. 310.21997 Selecting and Specifying Concrete Surface Preparation for Sealers, Coatings and Polymer Overla
20、ys (formerlyNo. 03732). Concrete Surface Profile Chips.2.5 Masonry Veneer Manufacturers Association:7MVMA Installation Guide for Adhered Concrete Masonry Veneer3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 adhered manufactured stone masonry veneer (AMSMV), veneer, nthe assem
21、bly of thin masonry units adhered to abacking with a cementitious mortar.3.1.1.1 DiscussionOther names have been used for this product since it was developed and the Masonry Veneer Manufacturers Association canprovide historic information regarding names.3.1.2 back butter, vthe act of applying a set
22、ting bed mortar to the back of a masonry unit.3.1.3 brown coat, nin multiple coat stucco work, the second coat, applied over the scratch coat.3.1.4 drainage wall system, na system installation that creates a physical planar air gap between cladding system and waterresistive barrier.3.1.5 foundation
23、weep screed, nan accessory used to terminate adhered manufactured stone masonry veneer at the bottom ofexterior framed walls.3.1.5.1 DiscussionThis accessory shall have a sloped, solid, or perforated, ground or screed flange to facilitate the removal of moisture from the airgap and a vertical attach
24、ment flange not less than 312 in. (89 mm) long.3.1.6 full setting bed, nmortar bed of specified thickness, covering the complete back of units and free of voids.3.1.7 scratch coat, nthe first coat of mortar or hydraullichydraulic cement based plaster applied to a base and then scratchedto create add
25、itional bonding area and mechanical interlock.3.1.8 setting bed, nthe mortar used to bond units to a prepared surface or scratch coat.3.1.9 sheathed frame substrate, nwood or metal/steel framing covered by a building code approved sheathing material.3.1.10 thumb-print hard, adjdescription of mortar
26、joints to determine their readiness for tooling determined when the mortarwill retain the imprint of a thumb but no mortar is transferred to the thumb.3.1.11 tight fit joint, na joint created when units are installed with edges touching or less than 38 in. (10 mm) distance betweenunits.3.1.11.1 Disc
27、ussion4 Available fromAmerican Society of Civil Engineers (ASCE), 1801Alexander Bell Dr., Reston, VA20191, http:/www.asce.org.The Masonry Society (TMS), 105 SouthSunset Street, Suite Q, Longmont, CO 80501, http:/www.masonrysociety.org.5 Available from American National Standards Institute (ANSI), 25
28、 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.6 Available from International Concrete Repair Institute (ICRI), 38800 Country Club Drive Farmington Hills, MI 48331, http:/www.icri.org.7 Available from Masonry Veneer Manufacturers Association (MVMA), 13750 Sunrise Valley Drive Herndo
29、n, VA 20171, http:/www.masonryveneer.org.C1780 142Many units have varied and random edges which make it impossible to define specific minimum or maximum joint space.3.1.12 water resistive barrier (WRB), na material behind an exterior wall covering that is intended to resist liquid water thathas pene
30、trated the exterior covering from further intruding into the exterior wall assembly.3.2 Refer to Terminology C1180 for additional terminology for mortar and Terminology C1232 for additional terminology formasonry.4. Materials4.1 Adhered Manufactured Stone Masonry Veneer (AMSMV) shall comply with the
31、 following requirements:4.1.1 AMSMV Units shall comply with Specification C1670.4.1.2 AMSMV Units shall comply with the Building Code Requirements for Masonry Structures; TMS 402/ACI 530/ASCE 5,Section 6.3.2.1Adhered Veneer, Unit sizes.4.2 Water Resistive Barrier shall comply with Specification E255
32、6/E2556M.4.3 Lath shall comply with one of the following:4.3.1 Expanded metal lath shall be corrosion resistant, shall have a minimum weight of 2.5 lblb/yd2 (1.13 kg)(1.4 kg/m2 persquare yard, ) and shall comply with the requirements of Specification C847.4.3.2 A 38-in. rib, expanded metal lath shal
33、l be corrosion resistant and shall have a minimum weight of 3.4 lb/yd2 (1.8 kg/m2)and shall comply with the requirements of Specification C847.4.3.3 Woven wire mesh shall be corrosion resistant, shall be a minimum of 18 gauge, and shall comply with the requirementsof Specification C1032.4.3.4 Welded
34、 wire lath shall be corrosion resistant and shall comply with Specification C933.4.3.5 Non-metallic lath material shall be corrosion resistant, with a published evaluation report from an ANSI accreditedevaluation service that rates the lath as acceptable substitute for the above listed laths and be
35、rated for use behindAMSMV.adheredmanufactured stone masonry veneer.NOTE 2It is acceptable to use lath materials that comply with 4.3 that also provide a paper backing which complies with the requirements of 4.2.4.4 Mortar:4.4.1 Mortar shall comply with one of the following:4.4.1.1 Type N or Type S o
36、f Specification C270.4.4.1.2 Type N or Type S of Specification C1714.4.4.1.3 ANSI A118.1A118.1-2013.1 or ANSI A118.4.A118.4-2013.1.NOTE 3Mortar may be specified by the proportion method or the property method of Specification C270.4.4.2 Admixtures shall comply with Specification C1384.4.4.3 Bonding
37、agents shall comply with Specification C1059 or Specification C932.4.4.4 Mortar coloring pigments shall comply with Specification C979.4.5 Lath fasteners shall comply with Specification C1063.4.6 Foundation weep screed shall comply with Specification C1063.4.7 Stucco system scratch or brown coat, wh
38、en used as theAMSMV adhered manufactured stone masonry veneer scratch coat,shall comply with Specification C926 up to the brown coat without application of the finish coat.4.8 Water used for mixing mortar or dampening units, scratch coat, or masonry surface shall be clean and free of amounts ofoils,
39、 acids, alkalies, salts, organic materials, or other substances that are deleterious to mortar or any metal in the wall.5. Ambient Conditions5.1 Hot and Dry ConditionsIf the ambient conditions exceed 100F (37C) or 90F (32C) with a wind velocity greater than8 mph (12.9 km/h) comply with the hot weath
40、er construction requirements of local building code, the recommendations ofAMSMVadhered manufactured stone masonry veneer unit manufacturer and hot weather construction provisions ofTMS 602/ACI530.1/ASCE 6. If there is a contradiction among documents, local building code shall prevail.5.1.1 When AMS
41、MV adhered manufactured stone masonry veneer is applied in hot or dry weather, before applying mortar,moisten the scratch coat with a fine spray of water or a wet brush to prevent excessive absorption of water from the mortar. Thescratch coat shall appear wet but without free water on the surface. U
42、nits shall also be moistened following the requirements of7.2.15.2 Freezing or Low TemperaturesAccelerating admixtures shall comply with Specification C1384.Anti-freeze admixtures tolower freezing point of mortar shall not be used. Accelerating admixtures containing calcium chloride shall not be use
43、d. If theambient conditions are below 40F (4C), the installation shall comply with the cold weather construction provisions of TMS602/ACI 530.1/ASCE 6.C1780 1436. Substrate/Surface Preparation6.1 The substrates and preparation that follow are typical and field proven applications. Installation over
44、any other substraterequires the approval of the AMSMV unit manufacturer.6.1.1 Alternative surface preparation shall be tested in accordance with Test Method C482 as modified by this practice. Theminimum shear bond strength between the unit and the prepared surface shall be 50 psi (0.34 MPa). Refer t
45、o the modificationsoutlined in Appendix X1.6.2 Masonry:6.2.1 Install units directly on masonry that is clean and free of paint, dirt, sealers, loose or spalling material.6.2.2 All masonry surfaces that are dirty, painted, coated with curing compounds or surface sealed, shall be cleaned by powerwashi
46、ng, sandblasting, beadblasting or appropriate solvent to form a substrate suitable for bonding. If the surface condition cannotsupport direct application, install lath. If masonry wall exhibits spalling, cracking or general deterioration, the wall shall beevaluated by the designer of record for inte
47、grity before proceeding.6.3 Wood/Metal Framing:6.3.1 Water Resistive Barrier (WRB) InstallationInstall two separate layers of WRB outboard of the sheathing material, inaccordance with the WRB manufacturers installation instructions. Each layer is not required to be the same material. The WRBshall be
48、 integrated with all flashing materials in such a manner that prevents penetration of water beyond the WRB. WRB shalloverlap a minimum 6 in. (152 mm) at vertical joints and a minimum 2 in. (50 mm) at horizontal joints and shall be applied inshingle fashion. WRB fasteners shall be spaced in accordanc
49、e with the water resistive barrier manufacturers installationinstructions.NOTE 4Some building code jurisdictions allow a single layer WRB when a drainage wall system is used. This is an acceptable installation when thedrainage wall system meets the requirements of Section 10 of this practice.6.3.2 Sheathed Frame Substrate:6.3.2.1 Foundation Weep ScreedInstall foundation weep screed in accordance with Specification C1063.6.3.2.2 LathInstall lath which meets the requirements of 4.3 in accordance with Specification C1063, or the alternate
