1、Designation:C 1420 05Standard Practice forSelection,Removal,and Shipment of Manufactured MasonryUnits Placed in Usage1This standard is issued under the fixed designation C 1420;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(e)indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This practice covers procedures to facilitate the processof selecting,removing,and shipping of manufactured masonryun
3、its that have been placed in usage and are intended fortesting.This practice also covers procedures for reporting aspart of this process.1.2 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are providedfor information purposes only.1.3 This stan
4、dard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM
5、Standards:2C 43 Terminology of Structural Clay ProductsC 1180 Terminology of Mortar and Grout for Unit MasonryC 1209 Terminology of Concrete Masonry Units and Re-lated UnitsC 1232 Terminology of MasonryC 1532 Practice for Selection,Removal,and Shipment ofMasonry Assemblage Specimens from Existing Co
6、nstruc-tionE 122 Practice for Choice of Sample Size to Estimate aMeasure of Quality for a Lot or Process3.Terminology3.1 Definitions:3.1.1 units placed in usagemanufactured masonry unitsthat have been installed in a masonry assembly.3.1.2 For definitions of other terms used in this practice,refer to
7、 Terminologies C 43,C 1180,C 1209,and C 1232.4.Significance and Use4.1 Manufactured masonry units that have been placed inusage are sometimes removed as part of an assessment of thecondition of the units.Such units are commonly prepared forshipment to a laboratory where the specimens are assessed wi
8、thvisual techniques,petrographic techniques,or standard testmethods.The process of selecting,removing,and shipping thespecimens can have an effect on test results.This practiceprovides procedures for selecting,removing,and shippingunits.4.2 This practice also covers reporting of the selection,remova
9、l,and shipping processes.This information allows theinterested parties to assess the impact of these processes on testresults.4.3 This practice does not define the use of the results oftests conducted on removed specimens.This practice does notdetermine whether manufactured masonry units placed inus
10、age met specification requirements at the time of purchase.4.4 If masonry assemblages are to be removed from existingconstruction,refer to Practice C 1532.5.Selection and Removal5.1 Selection of Test Specimens:NOTE1When specimens placed in usage are to be removed fortesting in accordance with test m
11、ethods that include requirements forsampling and selection of specimens,those requirements shall be replacedwith 5.1 of this practice.5.1.1 Visual AssessmentPrior to selecting specimens forremoval,perform a visual survey of the exposed surface toassess the condition of the units.5.1.1.1 Record obser
12、vations from the visual survey ondrawings that represent the appearance of the masonry con-struction.Include sample locations identified in 5.2.NOTE2The use of original construction drawings or drawing sheetsprepared for this purpose has been found to be useful for documenting theconditions of mason
13、ry construction.5.1.1.2 Conduct the visual assessment either over the entireconstruction or on a representative sample of the entireconstruction.1This practice is under the jurisdiction of ASTM Committee C15 on Manufac-tured Masonry Units and is the direct responsibility of Subcommittee C15.04 onRes
14、earch.Current edition approved May 15,2005.Published June 2005.Originallyapproved in 1999.Last previous edition approved in 2003 as C 142003a.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume
15、information,refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTE3Locations with different exposures,such as
16、walls exposed torain and walls protected from rain may be used to distinguish differentsegments of construction to be examined.NOTE4Practice E 122 provides information on how to calculate thenumber and locations of samples necessary in order to estimate with aprescribed precision,a measure of quality representing all the samplingarea.5.1.2 SamplingSelect specimens representative of the ma-sonry units used in the entire construction,or a selected part ofthe entire construction.Sample by one or mo
