ASTM C1715 C1715M-2015 Standard Test Method for Evaluation of Water Leakage Performance of Masonry Wall Drainage Systems《评估砌筑墙排水系统漏水性能的标准试验方法》.pdf

《ASTM C1715 C1715M-2015 Standard Test Method for Evaluation of Water Leakage Performance of Masonry Wall Drainage Systems《评估砌筑墙排水系统漏水性能的标准试验方法》.pdf》由会员分享，可在线阅读，更多相关《ASTM C1715 C1715M-2015 Standard Test Method for Evaluation of Water Leakage Performance of Masonry Wall Drainage Systems《评估砌筑墙排水系统漏水性能的标准试验方法》.pdf（9页珍藏版）》请在麦多课文档分享上搜索。

1、Designation: C1715/C1715M 15Standard Test Method forEvaluation of Water Leakage Performance of Masonry WallDrainage Systems1This standard is issued under the fixed designation C1715/C1715M; the number immediately following the designation indicates theyear of original adoption or, in the case of rev

2、ision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This test method describes a standard procedure fordetermining the ability of masonry wall drainag

3、e systems tocollect water that penetrates the exterior masonry wythe duringrainstorms and to direct this water back to the exterior surfaceof the wall.1.2 This test method is applicable to wall systems thatcontain an exterior masonry wythe with a drainage zone on theinterior face of the exterior wyt

4、he. It is not applicable tosingle-wythe drainage walls.1.3 This test method is not applicable to masonry barrierwalls or other masonry walls that are designed withoutdrainage zones behind the exterior wythe.1.4 This test method covers the application of the testingusing either inch-pound or SI units

5、. The values stated in eitherSI units or inch-pound units are to be regarded separately asstandard. Within the text, the inch-pound units are shown inbrackets. The values stated in each system may not be exactequivalents; therefore, each system shall be used independentlyof the other. Combining valu

6、es from the two systems mayresult in nonconformance with the standard.1.5 This standard 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

7、 applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C1232 Terminology of MasonryC1601 Test Method for Field Determination of Water Pen-etration of Masonry Wall SurfacesE514 Test Method for Water Penetration and LeakageThrough MasonryE631 Terminology of B

8、uilding Constructions3. Terminology3.1 DefinitionsFor definitions of terms relating to buildingconstruction used in this test method, see Terminology E631.For definitions of terms relating to masonry, brick and clay tile,and concrete masonry units used in this test method, seeTerminology C1232.3.2 D

9、efinitions of Terms Specific to This Standard:3.2.1 back-up wall, nthe portion of the wall systemlocated on the interior side of the drainage zone.3.2.2 drainage zone, nthe region located between theinterior face of the exterior wythe of masonry and the exteriorface of the back-up wall or the water-

10、resistive barrier placed onthe exterior face of the back-up wall to facilitate the flow ofwater to a flashing or water collection system.3.2.2.1 DiscussionThe drainage zone often includes othercomponents such as rigid insulation in addition to devices thatfacilitate the flow of water or prevent mort

11、ar from blocking theweeps.3.2.3 flashing, nan impervious material placed at specifiedlocations in a masonry wall drainage system to collect anddirect water penetrating through the exterior wythe of masonryto the exterior face of the exterior wythe of masonry by meansof a weep system.3.2.4 masonry ba

12、rrier wall, nsingle or multi-wythe ma-sonry wall system that does not contain a drainage zonedirectly behind the exterior masonry wythe.3.2.5 masonry drainage wall, nmasonry wall system de-signed with a drainage zone immediately behind the exteriormasonry wythe that allows water penetrating the maso

13、nry toflow down the drainage zone where the water is collected anddiverted by flashing to the exterior face of the exterior wythe orcollected and drained by some other water collection system.3.2.5.1 DiscussionThis wall type includes: masonry cav-ity walls; anchored masonry veneer walls; insulated c

14、avitywalls; and any other masonry wall systems with a drainagezone.1This test method is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.04 on Research.Current edition approved July 1, 2015. Published July 2015. Originally

15、approvedin 2009. Last previous edition approved in 2010 as C1715 10. DOI: 10.1520/C1715_C1715M-15.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Docu

16、ment Summary page onthe ASTM website.*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 States13.2.6 masonry wall drainage system, nthe drainage zone,the water resistive barrier (

17、where included), the flashing orother water collection devices, and the weep system in amasonry drainage wall designed to collect water that penetratesthe exterior masonry wythe and direct it back to the exteriorface of the exterior masonry wythe.3.2.7 masonry wall system, nall components of an exte

18、riorwall including the exterior masonry wythe, wall ties oranchors, the drainage system (if included), the back-up wall,insulation, and wall finishes.3.2.7.1 DiscussionBy definition in this standard, a ma-sonry wall system shall consist of at least an exterior masonrywythe exposed to weather.3.2.8 w

19、ater leakage, npenetration of water beyond theinnermost plane bounding the masonry wall drainage system orwater penetration below or behind flashings.3.2.9 water collection system, na trough system or similarsystem at the base of a drainage zone or a portion of that troughsystem, used in place of fl

20、ashing, intended to collect any waterthat penetrates the exterior wythe of masonry and direct thatwater to a drainage system.3.2.10 water resistive barrier, na coating or membrane onthe exterior surface of the back-up wall that is intended toprevent water, which has penetrated the exterior masonrywy

21、the and has bridged the air space, from reaching the surfaceof the back-up wall and to direct this water into the flashing orwater collection system below.3.2.11 weep system, na series of openings, tubes, wicks,vents, or other devices at the top surface of the flashing thatfacilitate the flow of wat

22、er that collects on the flashing back tothe exterior surface of the wall.4. Summary of Test Method4.1 This test method introduces water directly into themasonry wall drainage system through holes drilled in theexterior masonry wythe. Water is introduced along the interiorface of the exterior masonry

23、 wythe by means of hoses at eachentry point. These hoses are connected to a common watersource. The flow rates are controlled by flow regulatorsattached to each of the entry point hoses or to a manifold thatdistributes water uniformly to multiple hoses. This standardsets limits for several parameter

24、s to control the velocity andvolume of the water at points of entry as well as limits on theminimum number and maximum spacing of entry points toprovide uniform distribution of water along the interior face ofthe exterior masonry wythe. Interior and exterior observationsare performed before, during,

25、 and after the test to detect waterleakage and to observe the discharge of water to the exterior.5. Significance and Use5.1 This test method is suitable for use on walls to deter-mine the ability of masonry wall drainage systems to collectwater penetrating the exterior wythe and to direct this water

26、back to the exterior surface of the exterior wythe. Removal ofa portion of the interior wall finishes is desirable to observeleakage into backup walls. Even with removal of interiorfinishes, in many cases it is not practical to observe surfacesbehind spandrel beams, columns, or other obstructions. P

27、oten-tial areas where leakage may occur but that are not visibleduring the test shall be considered when interpreting the resultsof the test and shall be recorded in the report.5.2 This test method is suitable for use on mock-up walls todetermine the performance of masonry wall drainage systems.5.3

28、This test method is suitable for evaluating the effective-ness of flashing repairs.6. Apparatus6.1 Major Components:6.1.1 Water Sourcea source of potable water under pres-sure such as the local pressurized water supply, a water supplyconnected to a pump, or water from an elevated storage tank.6.1.2

29、Flow Metera device capable of measuring the waterflow with sufficient accuracy to meet the permitted variationslisted in Section 7. The flow meter shall be either integral withor following the flow regulator. Flow meters are connected toeach water entry point (Type l as shown in Fig. 1). If all wate

30、rentry points are located within 13 mm 0.5 in. from theaverage height of water entry points, the flow meter ispermitted to be attached to a distribution manifold connected tomultiple entry points (Type 2 as shown in Fig. 2) provided thetop of the distribution manifold is located at least 250 mm 10in

31、. below the lowest entry point, the entry point hoses are thesame length (within 25 mm 1.0 in.), and the entry points areevenly spaced (within 10 % of average spacing).NOTE 1Using separate flow meters and flow regulators attached toeach entry point allows adjustment of the spacing, height, and flow

32、ratesat the entry points based on the tributary area of the wall represented byeach entry point. When using a manifold attached to a single flow meterand flow regulator, the spacing, height, and flow rates at each entry pointsupplied by the manifold must be approximately equal. To ensure that theflo

33、w rates from the entry point hoses are within the specified tolerance, theheights of the entry points above the flow meter need to be approximatelyequal, the lowest entry point must exceed the minimum height above thedistribution manifold, and the length of each hose need to be approxi-mately equal.

34、 Conformance to the specified tolerance is verified duringcalibration.6.1.3 Flow Regulatora valve, either integral with the flowmeters or separate, to control the rate of water flow.6.1.4 Entry Point Hoseshoses attached directly to the flowmeter or to a distribution manifold for the purpose of suppl

35、yingwater into the masonry wall drainage system. The diameter ofthese hoses shall be large enough to ensure that the exteriorface of the water flow shall extend no farther than 6 mm 0.25in. horizontally beyond the end of the hose at a distance of 500mm 20 in. below the end of the hose (Fig. 3).NOTE

36、2High velocity water leaving small diameter hoses may causewater to project beyond the interior face of the exterior wythe. Thisrequirement is intended to ensure that water will flow down the interiorsurface of the exterior wythe.6.1.5 Distribution Manifolda series of pipes, tees, elbowsand other pl

37、umbing connections used to distribute water fromthe water source to each of the water entry points.6.1.6 Graduated Cylindera clear plastic or glass cylinderwhich is sealed at one end and contains graduations to measurequantities of water with an accuracy of 1 mL 0.034 oz.C1715/C1715M 152FIG. 1 Flow

38、Meter Connected to Each Entry Point (Type 1)FIG. 2 Flow Meter Connected to Multiple Entry Points (Type 2)C1715/C1715M 1536.1.7 Entry Pointa hole drilled through a mortar headjoint in the exterior wythe of masonry through which water isdirected into the drainage zone during the test. Drill entry poin

39、tholes at a 30 6 5 angle downward (Fig. 4).NOTE 3The 30 downward angle is intended to prevent water fromflowing back to the exterior through the entry points during the test.7. Calibration7.1 Verify the ability of the test apparatus to meet theapplicable requirements by setting up and testing the ap

40、paratusin a laboratory. Perform the calibration after initial fabricationand at least once per year. Verify three test levels during eachcalibration: the highest flow rate at which the apparatus isdesigned to operate, the lowest flow rate at which the apparatusis designed to operate, and the midpoin

41、t between these two testflow rates.7.2 Position the ends of the water entry hoses at thespecified angle listed in 6.1.7 (Fig. 4).7.3 Check the horizontal projection of water flow from theend of at least one of the hoses to demonstrate that the hoseconforms to the requirements of 6.1.4. Locate the me

42、asurementdevice a minimum of 500 mm 20 in. below the hose. Themeasurement device is used to measure the distance from apoint directly below the lower edge of the tip of the water entryhose to the outer edge of the water flow within an accuracy of1 mm 0.04 in., as shown in Fig. 3. The exterior face o

43、f thewater flow shall extend no farther than 6 mm 0.25 in.horizontally beyond the end of the hose. Perform this check atthe maximum flow rate at which the water entry hose will beused.7.4 For an apparatus that uses a flow meter and flowregulator attached to a distribution manifold connected tomultip

44、le entry points (Type 2), calibrate the apparatus bysetting up the system in a laboratory so that the water entrypoints are located at the same level (within 2 mm 0.08 in.)except that one entry point is positioned 13 mm 0.5 in. abovethe average level and one entry point is positioned 13 mm 0.5in. be

45、low the average level. Set the height between the averagelevel of the entry points and the top of the flow meter at thespecified minimum level specified in 6.1.2.7.5 Verify the flow rate at each entry point in either theType 1 or the Type 2 apparatus using a graduated cylinder bycollecting water for

46、 a minimum of 30 s after the system hasbeen operating for a minimum of 5 min. The measured flowrate at any entry point hose shall not vary more than 25 % fromthe test flow rate at each entry point. The total flow rate,FIG. 3 Entry Point HoseC1715/C1715M 154determined by adding the flow rates from ea

47、ch of the entrypoint hoses, shall not vary more than 15 % from the test flowrate at each entry point multiplied by the total number of entrypoints.8. Weather Conditions8.1 Conduct test when the temperatures of the exterior airand of the exterior surface of the masonry are not less than 5C40F.8.2 Con

48、duct test when the surface of the wall is visibly dryor include in the report the location and the extent or magnitudeof moisture present on or within the test wall with photographs,moisture measurements, drawings or notes so that any changein the moisture throughout the test is visible.9. Preparati

49、on of Test Apparatus9.1 Install entry points on the exterior face of the exteriormasonry wythe at a distance above the base of the masonrywall drainage system or element to be tested that is greater thanor equal to the spacing of the entry points, but not less than 400mm 16 in. (Fig. 5 and Fig. 6).NOTE 4The element to be tested may include the flashing or watercollection system within the height of the wall; the portion of the wallsystem where past interior leakage has occurred; a window or otherinterruption in the draina