ASTM E1680-16

Standard Test Method for Rate of Air Leakage through Exterior Metal Roof Panel Systems

SIGNIFICANCE AND USE
5.1 This test method is a standard procedure for determining air leakage characteristics under specified air pressure differences.
Note 1: The air pressure differences acting across a building envelope vary greatly. The slope of the roof and other factors affecting air pressure differences and the implications of the resulting air leakage relative to the environment within buildings are discussed in the literature.4,5,6 These factors shall be considered fully when specifying the test pressure difference to be used.
Note 2: When applying the results of tests by this test method, note that the performance of a roof or its components, or both, may be a function of proper installation and adjustment. The performance in service will also depend on the rigidity of supporting construction, the presence of interior treatments, the roof slope, and the resistance of components to deterioration by various causes: corrosive atmospheres, aging, ice, vibration, thermal expansion, and contraction, etc. It is difficult to simulate the identical complex environmental conditions that can be encountered in service, including rapidly changing pressures due to wind gusting. Some designs are more sensitive than others to these environmental conditions.  
5.2 Rates of air leakage are sometimes used for comparison purposes. The comparisons are not always valid unless the components being tested and compared are of essentially the same size, configuration, and design.
Note 3: The specimen construction discussed in 1.2 and required in 8.1 isolates a source of leakage. The rate of air leakage measured during the test method has units of cubic feet per minute per square foot (litres per second per square metre). Openings and details such as end laps or roof curbs are excluded since leakage is measured more appropriately in cubic feet per minute per foot (litres per second per metre) at these conditions. The test specimen area is relatively small; the inclusion of details will give unrea...
SCOPE
1.1 This test method covers the determination of the resistance of exterior metal roof panel systems to air infiltration resulting from either positive or negative air pressure differences. The test method described is for tests with constant temperature and humidity across the specimen. This test method is a specialized adaption of Test Method E283.  
1.2 This test method is applicable to any roof area. This test method is intended to measure only the air leakage associated with the field of the roof, including the panel side laps and structural connections; it does not include leakage at the openings or perimeter or any other details.  
1.3 The proper use of this test method requires knowledge of the principles of air flow and pressure measurements.  
1.4 The text of this test method references notes and footnotes excluding tables and figures, which provide explanatory material. These notes and footnotes shall not be considered to be requirements of the test method.  
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 7.

General Information

• Status: Historical
• Publication Date: 29-Feb-2016
• ICS: 91.060.20 - Roofs
• Technical Committee: E06 - Performance of Buildings
• Drafting Committee: E06.57 - Performance of Metal Roof Systems

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E1680 − 16
Standard Test Method for
Rate of Air Leakage through Exterior Metal Roof Panel
1
Systems
This standard is issued under the fixed designation E1680; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E177Practice for Use of the Terms Precision and Bias in
ASTM Test Methods
1.1 This test method covers the determination of the resis-
E283Test Method for Determining Rate of Air Leakage
tance of exterior metal roof panel systems to air infiltration
Through Exterior Windows, Curtain Walls, and Doors
resulting from either positive or negative air pressure differ-
Under Specified Pressure Differences Across the Speci-
ences. The test method described is for tests with constant
men
temperature and humidity across the specimen. This test
E631Terminology of Building Constructions
method is a specialized adaption of Test Method E283.
E691Practice for Conducting an Interlaboratory Study to
1.2 This test method is applicable to any roof area.This test
Determine the Precision of a Test Method
method is intended to measure only the air leakage associated
E1592Test Method for Structural Performance of Sheet
with the field of the roof, including the panel side laps and
Metal Roof and Siding Systems by Uniform Static Air
structural connections; it does not include leakage at the
Pressure Difference
openings or perimeter or any other details.
E1646Test Method for Water Penetration of Exterior Metal
Roof Panel Systems by Uniform Static Air Pressure
1.3 The proper use of this test method requires knowledge
of the principles of air flow and pressure measurements. Difference
2.2 Other Standards:
1.4 The text of this test method references notes and
3
footnotes excluding tables and figures, which provide explana- AAMA 501Methods of Test for Metal Curtain Walls
tory material. These notes and footnotes shall not be consid-
ered to be requirements of the test method. 3. Terminology
3.1 Definitions—For definitions of general terms relating to
1.5 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical buildingconstructionusedinthistestmethod,seeTerminology
conversions to SI units that are provided for information only E631.
and are not considered standard. 3.2 Definitions of Terms Specific to This Standard:
3.2.1 air leakage (Q)—the volume of air flowing per unit of
1.6 This standard does not purport to address all of the
time through the assembled specimen under a test pressure
safety concerns, if any, associated with its use. It is the
difference,expressedincubicfeetperminute(cubicmetresper
responsibility of the user of this standard to establish appro-
second).
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. For specific
3.2.2 extraneous air leakage (Q )—the difference between
L
precautionary statements, see Section 7.
the metered air flow (Q ) and air leakage (Q); the leakage of
m
the remainder of the test chamber.
2. Referenced Documents
3.2.3 metered air flow (Q )—the volume of air flowing per
2 m
2.1 ASTM Standards:
unitoftimethroughtheairflowmeteringsystem,expressedin
cubic feet per minute (cubic metres per second).
1
This test method is under the jurisdiction of ASTM Committee E06 on
3.2.4 rate of air leakage—the air leakage per unit of
Performance of Buildings and is the direct responsibility of Subcommittee E06.57
specimen area (A), expressed in cubic feet per minute per
on Performance of Metal Roof Systems.
square foot (cubic metres per second per square metre).
Current edition approved March 1, 2016. Published April 2016. Originally
approved in 1995. Last previous edition approved in 2011 as E1680–11. DOI:
10.1520/E1680-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Available from American Architectural Manufacturers Association (AAMA),
Standards volume information, refer to the standard’s Document Summary page on 1827 Walden Office Square, Suite 550, Schaumburg, IL 60173-4268, http://
the ASTM website. www.aamanet.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1680 − 16
many details.Although prescribed modifications are outside the scope of
3.2.5 reference standard conditions—dryairatapressureof
this test method, an experienced testing engineer is able to use the
29.92 in. Hg (101.3 kPa), temperature of 69.4°F (20.8°C), and
principles present
...

This document is 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. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1680 − 11 E1680 − 16
Standard Test Method for
Rate of Air Leakage Throughthrough Exterior Metal Roof
1
Panel Systems
This standard is issued under the fixed designation E1680; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the determination of the resistance of exterior metal roof panel systems to air infiltration resulting
from either positive or negative air pressure differences. The test method described is for tests with constant temperature and
humidity across the specimen. This test method is a specialized adaption of Test Method E283.
1.2 This test method is applicable to any roof area. This test method is intended to measure only the air leakage associated with
the field of the roof, including the panel side laps and structural connections; it does not include leakage at the openings or
perimeter or any other details.
1.3 The proper use of this test method requires knowledge of the principles of air flow and pressure measurements.
1.4 The text of this test method references notes and footnotes excluding tables and figures, which provide explanatory material.
These notes and footnotes shall not be considered to be requirements of the test method.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use. For specific precautionary statements, see Section 7.
2. Referenced Documents
2
2.1 ASTM Standards:
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E283 Test Method for Determining Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified
Pressure Differences Across the Specimen
E631 Terminology of Building Constructions
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1592 Test Method for Structural Performance of Sheet Metal Roof and Siding Systems by Uniform Static Air Pressure
Difference
E1646 Test Method for Water Penetration of Exterior Metal Roof Panel Systems by Uniform Static Air Pressure Difference
2.2 Other Standards:
3
AAMA 501 Methods of Test for Metal Curtain Walls
3. Terminology
3.1 Definitions—For definitions of general terms relating to building construction used in this test method, see Terminology
E631.
3.2 Definitions of Terms Specific to This Standard:
1
This test method is under the jurisdiction of ASTM Committee E06 on Performance of Buildings and is the direct responsibility of Subcommittee E06.57 on Performance
of Metal Roof Systems.
Current edition approved Nov. 1, 2011March 1, 2016. Published November 2011April 2016. Originally approved in 1995. Last previous edition approved in 20032011
as E1680 – 95 (2003).E1680 – 11. DOI: 10.1520/E1680-11.10.1520/E1680-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from American Architectural Aluminum Manufacturers Association (AAMA), 1827 Walden Office Square, Suite 550, Schaumburg, IL 60173,60173-4268,
http://www.aamanet.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1680 − 16
3.2.1 air leakage (Q)—the volume of air flowing per unit of time through the assembled specimen under a test pressure
difference, expressed in cubic feet per minute (cubic metres per second).
3.2.2 extraneous air leakage (Q )—the difference between the metered air flow (Q ) and air leakage (Q); the leakage of the
L m
remainder of the test chamber.
3.2.3 metered air flow (Q )—the volume of air flowing per unit of time through the air flow metering system, expressed in cubic
m
feet per minute (cubic metres per second).
3.2.4 rate of air leakage—the air leakage p
...