Standard Practice for Probable Maximum Loss (PML) Evaluations for Earthquake Due-Diligence Assessments

SIGNIFICANCE AND USE
This practice is intended for use as a voluntary standard by parties who wish to undertake the seismic risk assessment of properties. The goal is for users to objectively and reliably compare the financial risks of earthquake damage to buildings, or groups of buildings, on a consistent basis.
This practice is designed to provide requirements for the evaluation of earthquake damage risk so that technical reports prepared for the evaluation and rating of seismic risk of a building(s) will be adequate for use by other entities. Potential users including, but are not be limited to, those making equity investments, lending, and financial transactions, including securitized mortgage lending by mortgage originators, loan servicers, underwriters, rating agencies, and purchasers of bonds secured by the real estate.
The use of this practice may permit a user to satisfy, in part, their requirements for due diligence in assessing a property’potential for losses associated with earthquakes for real estate transactions.
SCOPE
1.1 This practice establishes standard-of-care for evaluation and classification of the financial risks from earthquake damage to real estate improvements for use in financial transactions. As such, this practice permits a user to satisfy, in part, their real estate transaction due-diligence requirements with respect to assessing and characterizing a property's potential losses from earthquakes. This practice is intended to address only physical damage to the property from site and building response.
1.1.1 Hazards addressed in this practice include earthquake ground shaking, earthquake-caused site instability, including faulting, subsidence, settlement landslides and soil liquefaction, earthquake-caused tsunamis and seiches, and earthquake-caused flooding from dam or dike failures.
1.1.2 Earthquake-caused fires and toxic materials releases are not hazards considered in this practice.
1.1.3 This practice does not purport to provide for the preservation of life safety, or prevention of building damage associated with its use, or both.
This practice does not address requirements of any federal, state, or local laws and regulations of building construction or maintenance. Users are cautioned that current federal, state, and local laws and regulations may differ from those in effect at the times of construction or modification of the building(s), or both.
This practice does not address the contractual and legal obligations between prior and subsequent Users of PML reports or between providers who prepared the report and those who would like to use such prior reports.
This practice does not address the contractual and legal obligations between a provider and a user, and other parties, if any.
1.1.4 It is the responsibility of the owner of the building(s) to establish appropriate life-safety and damage prevention practices and determine the applicability of current regulatory limitations prior to use.
1.2 Considerations not included in the scope: the impacts of damage to building contents, loss of income(s), rents, or other economic benefits of use of the property, or from legal judgments, fire sprinkler water-induced damage or fire.
1.3 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.

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Publication Date
30-Apr-2007
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ASTM E2557-07 - Standard Practice for Probable Maximum Loss (PML) Evaluations for Earthquake Due-Diligence Assessments
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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: E2557 − 07 AnAmerican National Standard
Standard Practice for
Probable Maximum Loss (PML) Evaluations for Earthquake
1,2
Due-Diligence Assessments
This standard is issued under the fixed designation E2557; 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 practices and determine the applicability of current regulatory
limitations prior to use.
1.1 This practice establishes standard-of-care for evaluation
and classification of the financial risks from earthquake dam- 1.2 Considerations not included in the scope: the impacts of
age to real estate improvements for use in financial transac- damage to building contents, loss of income(s), rents, or other
tions. As such, this practice permits a user to satisfy, in part, economic benefits of use of the property, or from legal
their real estate transaction due-diligence requirements with judgments, fire sprinkler water-induced damage or fire.
respect to assessing and characterizing a property’s potential
1.3 The values stated in inch-pound units are to be regarded
losses from earthquakes. This practice is intended to address
as standard. The values given in parentheses are mathematical
only physical damage to the property from site and building
conversions to SI units that are provided for information only
response.
and are not considered standard.
1.1.1 Hazards addressed in this practice include earthquake
ground shaking, earthquake-caused site instability, including
2. Referenced Documents
faulting, subsidence, settlement landslides and soil
3
2.1 ASTM Standards:
liquefaction, earthquake-caused tsunamis and seiches, and
E2026 Guide for Seismic Risk Assessment of Buildings
earthquake-caused flooding from dam or dike failures.
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2.2 Other Standards:
1.1.2 Earthquake-caused fires and toxic materials releases
UBC-97 Unifrom Building Code, 1997 Edition
are not hazards considered in this practice.
International Building Code 2006 Edition
1.1.3 This practice does not purport to provide for the
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2.3 ASCE Standards:
preservation of life safety, or prevention of building damage
ASCE 7 Minimum Design Loads for Buildings and Other
associated with its use, or both.
Structures
1.1.3.1 This practice does not address requirements of any
ASCE 31 Seismic Evaluation of Existing Buildings
federal, state, or local laws and regulations of building con-
ASCE 41 Seismic Rehabilitation of Existing Buildings
struction or maintenance. Users are cautioned that current
federal, state, and local laws and regulations may differ from
3. Terminology
those in effect at the times of construction or modification of
3.1 See also definitions in Guide E2026.
the building(s), or both.
3.2 DBE, n—Design Basis Earthquake, as defined in Guide
1.1.3.2 This practice does not address the contractual and
E2026.
legal obligations between prior and subsequent Users of PML
reports or between providers who prepared the report and those
3.3 lateral load-resisting system, n—Lateral Load Resisting
who would like to use such prior reports.
System, as defined in Guide E2026.
1.1.3.3 This practice does not address the contractual and
3.4 MCE, n—Maximum Capable Earthquake as defined in
legal obligations between a provider and a user, and other
Guide E2026.
parties, if any.
3.5 PML, n—Term historically used to characterize building
1.1.4 It is the responsibility of the owner of the building(s)
damageability in earthquakes.
to establish appropriate life-safety and damage prevention
1 3
This practice is under the jurisdiction of ASTM Committee E06 on Perfor- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mance of Buildings and is the direct responsibility of Subcommittee E06.25 on contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Whole Buildings and Facilities. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2007. Published May 2007. DOI: 10.1520/ the ASTM website.
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E2557-07. Available from International Organization for Standardization (ISO), 1 rue de
2
Portions of this publication reproduce content from the 1997 Uniform Building Varembé, Case postale 56, CH-1211, Geneva 20, Switzerland, http://www.iso.ch.
5
Code, International Code Council, Inc. Falls Church, Virginia. Reproduced with Available from American Society of Civil Engineers (ASCE), 1801 Alexander
permission. All rights reserved. Bell Dr., Reston, VA 20191, http://www.asce.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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