1、Designation:C140912Standard Guide forMeasuring and Estimating Quantities of Insulated Pipingand Components1This standard is issued under the fixed designation C1409;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last rev
2、ision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.INTRODUCTIONA committee of ASTM International initiated this guide to improve industry-wide understanding ofthe components in an insulated pip
3、ing system that affect the installed cost of insulating the system.Themethod of measurement standard used as a bias for this guide is the National Commercial andIndustrial Standards.2ASTM International defines a guide as a series of options or instructions that does not recommenda specific course of
4、 action.A guide only suggests a course of action.Its purpose is to offer guidancebased on a consensus of viewpoints,but not to establish a fixed procedure.A guide is intended toincrease the awareness of the user to available techniques in a given subject area and to provideinformation from which sub
5、sequent evaluation and standardization can be derived.It is the intention that this guide will help gain wider acceptance and understanding of the conceptsin the MICA standard.1.Scope1.1 This guide defines the components of an insulatedpiping system to be measured or counted to determine quan-tities
6、 and pricing for unit price contracts or extra work.1.2 Pricing may be done through unit pricing for each itemby pipe size,type of insulation system,insulation thickness,double or multilayer insulation,type of weatherproofing orjacketing,and pressure rating(if necessary)or through com-ponent(fitting
7、)factor or multipliers.1.2.1 Component(fitting)factors or multipliers,which aremultipliers times the straight length of piping as shown inTable 1,determine relative prices for each component notwithin the scope of this guide.These factors or multipliers areto be determined by the insulating contract
8、or relative to thegiven situation and insulation system specification.1.2.2 It is suggested that only one type of pricing be used ona project.1.2.3 The values stated in inch-pound units are to beregarded as the standard.2.Referenced Documents2.1 ASTM Standards:3C168 Terminology Relating to Thermal I
9、nsulation3.Terminology3.1 DefinitionsFor definitions of terms used in this guide,see Terminology C168.4.Summary of Guide4.1 This guide lists examples of components of pipingsystems which effect insulation cost.From this list,compo-nents to be counted are selected by the involved parties.5.Significan
10、ce and Use5.1 This guide establishes procedures to help parties in-volved in unit price piping insulation contracts reach agree-ment as to what components will be counted for pricingpurposes.6.Procedure6.1 For a unit price-type contract,establish unit prices forstraight run piping.These unit prices
11、should include pipe size,type of insulation system,insulation thickness,single or1This guide is under the jurisdiction of ASTM Committee C16 on ThermalInsulation and is the direct responsibility of Subcommittee C16.40 on InsulationSystems.Current edition approved Sept.1,2012.Published October 2012.O
12、riginallyapproved in 1998.Last previous edition approved in 2008 as C1409 08.DOI:10.1520/C1409-12.2Further information is available from the Midwest Insulation ContractorsAssn.(MICA),2017 S.139th Circle,Omaha,NE.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Custom
13、er Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 multilayer insulation,and type of weatherpro
14、ofing or jacketingsuch as shown in the example in Table 1.6.2 Determine the quantity of straight run pipe insulation bystraight pipe measurement from centerline to centerline andinclude lengths of all in-line components.This method isdefined as“measured through”(see Fig.X3.1).6.3 Count the quantitie
15、s of piping components.The pipingcomponents(fittings)to be counted may be modified by thoselisted in Table 2.The components should be categorized bypipe size,type of insulation system,insulation thickness,andpressure rating,if necessary.Table 2 may be used as a checklistto assist in the categorizati
16、on.6.4 The method of pricing(unit price per component orfitting factors)for each category will be determined by theterms of a request for quotation or commercial contract.However,users of this guide must be aware that selection ofelements to be counted,categories,and method of measuringpipe,have a direct bearing on the final total price.Knowledgeof this fact is critical to the selection of the most qualifiedinstaller.6.5 For a unit price contract,each component shall have itsown table categorize