ASTM E1666-95a(2018)
(Classification)Standard Classification for Serviceability of an Office Facility for Work Outside Normal Hours or Conditions
Standard Classification for Serviceability of an Office Facility for Work Outside Normal Hours or Conditions
SIGNIFICANCE AND USE
4.1 Each Facility Rating Scale (see Figs. 1-4) in this classification provides a means to estimate the level of serviceability of a building or facility for one topic of serviceability and to compare that level against the level of any other building or facility.
4.2 This classification can be used for comparing how well different buildings or facilities meet a particular requirement for serviceability. It is applicable despite differences such as location, structure, mechanical systems, age, and building shape.
4.3 This classification can be used to estimate the amount of variance of serviceability from target or from requirement, for a single office facility, or within a group of office facilities.
4.4 This classification can be used to estimate the following:
4.4.1 Serviceability of an existing facility for uses other than its present use.
4.4.2 Serviceability (potential) of a facility that has been planned but not yet built.
4.4.3 Serviceability (potential) of a facility for which remodeling has been planned.
4.5 Use of this classification does not result in building evaluation or diagnosis. Building evaluation or diagnosis generally requires a special expertise in building engineering or technology and the use of instruments, tools, or measurements.
4.6 This classification applies only to facilities that are building constructions, or parts thereof. (While this classification may be useful in rating the serviceability of facilities that are not building constructions, such facilities are outside the scope of this classification.)
4.7 This classification is not intended for, and is not suitable for, use for regulatory purposes, nor for fire hazard assessment nor for fire risk assessment.
SCOPE
1.1 This classification covers pairs of scales for classifying an aspect of the serviceability of an office facility, that is, the capability of an office facility to meet certain possible requirements to be able to do normal office tasks outside scheduled hours.
1.2 Within that aspect of serviceability, each pair of scales, shown in Figs. 1-4, are for classifying one topic of serviceability. Each paragraph in an Occupant Requirement Scale (see Figs. 1-4) summarizes one level of serviceability on that topic, which occupants might require. The matching entry in the Facility Rating Scale (see Figs. 1-4) is a translation of the requirement into a description of certain features of a facility which, taken in combination, indicate that the facility is likely to meet that level of required serviceability.
FIG. 1 Scale A.10.1 for Operation Outside Normal Hours
FIG. 1 Scale A.10.1 for Operation Outside Normal Hours (continued)
FIG. 2 Scale A.10.2 for Support After Hours
FIG. 2 Scale A.10.2 for Support After Hours (continued)
FIG. 3 Scale A.10.3 for Temporary Loss of External Services
FIG. 3 Scale A.10.3 for Temporary Loss of External Services (continued)
FIG. 4 Scale A.10.4 for Continuity of Work (During Breakdowns)
FIG. 4 Scale A.10.4 for Continuity of Work (During Breakdowns) (continued)
1.3 The entries in the Facility Rating Scale (see Figs. 1-4) are indicative and not comprehensive. They are for quick scanning to estimate approximately, quickly, and economically, how well an office facility is likely to meet the needs of one or another type of occupant group over time. The entries are not for measuring, knowing, or evaluating how an office facility is performing.
1.4 This classification can be used to estimate the level of serviceability of an existing facility. It can also be used to estimate the serviceability of a facility that has been planned but not yet built, such as one for which single-line drawings and outline specifications have been prepared.
1.5 This classification indicates what would cause a facility to be rated at a certain level of serviceability, but does not state how to conduct a serviceability rating nor how to assign...
General Information
- Status
- Published
- Publication Date
- 28-Feb-2018
- Technical Committee
- E06 - Performance of Buildings
- Drafting Committee
- E06.25 - Whole Buildings and Facilities
Relations
- Effective Date
- 01-Mar-2018
- Effective Date
- 01-Mar-2015
- Effective Date
- 01-Nov-2014
- Effective Date
- 01-Oct-2013
- Effective Date
- 01-Apr-2012
- Effective Date
- 01-Jun-2006
- Effective Date
- 01-May-2005
- Effective Date
- 01-May-2005
- Effective Date
- 28-Jul-2000
- Effective Date
- 10-Oct-1999
- Effective Date
- 10-Oct-1999
- Effective Date
- 01-Mar-2018
- Effective Date
- 01-Mar-2018
Overview
ASTM E1666-95a(2018), Standard Classification for Serviceability of an Office Facility for Work Outside Normal Hours or Conditions, establishes a framework to estimate and classify how well an office building supports activities conducted outside standard operating hours. Developed by ASTM International, this classification provides scales that help building owners, occupants, and facility managers quickly assess and compare the serviceability of office facilities for after-hours operations, backup conditions, and other atypical scenarios.
This standard enables objective comparison across office buildings regardless of variations in location, structure, age, or systems, supporting decisions regarding use, remodeling, or new construction. While it does not provide a full evaluation or diagnosis of a building, it is a valuable tool for high-level serviceability assessments, particularly when information must be gathered economically and efficiently.
Key Topics
ASTM E1666-95a(2018) focuses on four primary topics of office facility serviceability outside normal hours, each classified by paired scales:
- Operation Outside Normal Hours: Assesses the capability of the facility to support work during evenings, nights, weekends, or holidays.
- Support After Hours: Evaluates the availability of building services (like maintenance, security, and utilities) required for after-hours work.
- Temporary Loss of External Services: Examines contingency provisions for office functions during external service interruptions, such as utility failures.
- Continuity of Work (During Breakdowns): Considers the robustness of internal systems that allow work to continue in the event of building system breakdowns.
Each topic has an Occupant Requirement Scale (summarizing user needs) and a Facility Rating Scale (describing facility features likely to meet those needs). These scales support rapid, approximate estimation of serviceability rather than detailed performance measurement.
Applications
The ASTM E1666-95a(2018) standard is highly practical for organizations seeking to:
- Compare Office Buildings: Assess how well multiple buildings meet serviceability requirements for out-of-hours use or specific business functions.
- Plan New Facilities: Estimate the future serviceability of office buildings based on designs, specifications, and projected needs for operations outside standard hours.
- Re-purpose or Remodel: Evaluate the suitability of current buildings for new uses, including extended or non-traditional occupancy schedules.
- Benchmark Performance: Track serviceability variance across a portfolio of facilities or monitor improvements following capital projects.
- Support Rapid Decision-Making: Enable efficient, consistent analyses using repeatable and standardized estimation methods.
Note: The standard is not intended for regulatory compliance, fire safety, or detailed building evaluations, and should not replace technical expertise where required.
Related Standards
Several related references and standards complement ASTM E1666-95a(2018):
- ASTM E631: Terminology of Building Constructions - Provides definitions for key terms used in building facility assessments.
- ASTM E1334: Practice for Rating the Serviceability of a Building or Building-Related Facility (Withdrawn 2013) - Offers procedures for assigning serviceability scores.
- ASTM E1679: Practice for Setting the Requirements for the Serviceability of a Building or Building-Related Facility - Supports requirement-setting and serviceability determination.
- ISO 6240: International Standard, Performance Standards in Building-Contents and Presentation - Provides international benchmarks for building performance.
Keywords: office facility serviceability, after-hours operation, building rating, office building assessment, backup conditions, facility management standards, ASTM E1666, after hours support, office continuity, temporary utility loss
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Frequently Asked Questions
ASTM E1666-95a(2018) is a standard published by ASTM International. Its full title is "Standard Classification for Serviceability of an Office Facility for Work Outside Normal Hours or Conditions". This standard covers: SIGNIFICANCE AND USE 4.1 Each Facility Rating Scale (see Figs. 1-4) in this classification provides a means to estimate the level of serviceability of a building or facility for one topic of serviceability and to compare that level against the level of any other building or facility. 4.2 This classification can be used for comparing how well different buildings or facilities meet a particular requirement for serviceability. It is applicable despite differences such as location, structure, mechanical systems, age, and building shape. 4.3 This classification can be used to estimate the amount of variance of serviceability from target or from requirement, for a single office facility, or within a group of office facilities. 4.4 This classification can be used to estimate the following: 4.4.1 Serviceability of an existing facility for uses other than its present use. 4.4.2 Serviceability (potential) of a facility that has been planned but not yet built. 4.4.3 Serviceability (potential) of a facility for which remodeling has been planned. 4.5 Use of this classification does not result in building evaluation or diagnosis. Building evaluation or diagnosis generally requires a special expertise in building engineering or technology and the use of instruments, tools, or measurements. 4.6 This classification applies only to facilities that are building constructions, or parts thereof. (While this classification may be useful in rating the serviceability of facilities that are not building constructions, such facilities are outside the scope of this classification.) 4.7 This classification is not intended for, and is not suitable for, use for regulatory purposes, nor for fire hazard assessment nor for fire risk assessment. SCOPE 1.1 This classification covers pairs of scales for classifying an aspect of the serviceability of an office facility, that is, the capability of an office facility to meet certain possible requirements to be able to do normal office tasks outside scheduled hours. 1.2 Within that aspect of serviceability, each pair of scales, shown in Figs. 1-4, are for classifying one topic of serviceability. Each paragraph in an Occupant Requirement Scale (see Figs. 1-4) summarizes one level of serviceability on that topic, which occupants might require. The matching entry in the Facility Rating Scale (see Figs. 1-4) is a translation of the requirement into a description of certain features of a facility which, taken in combination, indicate that the facility is likely to meet that level of required serviceability. FIG. 1 Scale A.10.1 for Operation Outside Normal Hours FIG. 1 Scale A.10.1 for Operation Outside Normal Hours (continued) FIG. 2 Scale A.10.2 for Support After Hours FIG. 2 Scale A.10.2 for Support After Hours (continued) FIG. 3 Scale A.10.3 for Temporary Loss of External Services FIG. 3 Scale A.10.3 for Temporary Loss of External Services (continued) FIG. 4 Scale A.10.4 for Continuity of Work (During Breakdowns) FIG. 4 Scale A.10.4 for Continuity of Work (During Breakdowns) (continued) 1.3 The entries in the Facility Rating Scale (see Figs. 1-4) are indicative and not comprehensive. They are for quick scanning to estimate approximately, quickly, and economically, how well an office facility is likely to meet the needs of one or another type of occupant group over time. The entries are not for measuring, knowing, or evaluating how an office facility is performing. 1.4 This classification can be used to estimate the level of serviceability of an existing facility. It can also be used to estimate the serviceability of a facility that has been planned but not yet built, such as one for which single-line drawings and outline specifications have been prepared. 1.5 This classification indicates what would cause a facility to be rated at a certain level of serviceability, but does not state how to conduct a serviceability rating nor how to assign...
SIGNIFICANCE AND USE 4.1 Each Facility Rating Scale (see Figs. 1-4) in this classification provides a means to estimate the level of serviceability of a building or facility for one topic of serviceability and to compare that level against the level of any other building or facility. 4.2 This classification can be used for comparing how well different buildings or facilities meet a particular requirement for serviceability. It is applicable despite differences such as location, structure, mechanical systems, age, and building shape. 4.3 This classification can be used to estimate the amount of variance of serviceability from target or from requirement, for a single office facility, or within a group of office facilities. 4.4 This classification can be used to estimate the following: 4.4.1 Serviceability of an existing facility for uses other than its present use. 4.4.2 Serviceability (potential) of a facility that has been planned but not yet built. 4.4.3 Serviceability (potential) of a facility for which remodeling has been planned. 4.5 Use of this classification does not result in building evaluation or diagnosis. Building evaluation or diagnosis generally requires a special expertise in building engineering or technology and the use of instruments, tools, or measurements. 4.6 This classification applies only to facilities that are building constructions, or parts thereof. (While this classification may be useful in rating the serviceability of facilities that are not building constructions, such facilities are outside the scope of this classification.) 4.7 This classification is not intended for, and is not suitable for, use for regulatory purposes, nor for fire hazard assessment nor for fire risk assessment. SCOPE 1.1 This classification covers pairs of scales for classifying an aspect of the serviceability of an office facility, that is, the capability of an office facility to meet certain possible requirements to be able to do normal office tasks outside scheduled hours. 1.2 Within that aspect of serviceability, each pair of scales, shown in Figs. 1-4, are for classifying one topic of serviceability. Each paragraph in an Occupant Requirement Scale (see Figs. 1-4) summarizes one level of serviceability on that topic, which occupants might require. The matching entry in the Facility Rating Scale (see Figs. 1-4) is a translation of the requirement into a description of certain features of a facility which, taken in combination, indicate that the facility is likely to meet that level of required serviceability. FIG. 1 Scale A.10.1 for Operation Outside Normal Hours FIG. 1 Scale A.10.1 for Operation Outside Normal Hours (continued) FIG. 2 Scale A.10.2 for Support After Hours FIG. 2 Scale A.10.2 for Support After Hours (continued) FIG. 3 Scale A.10.3 for Temporary Loss of External Services FIG. 3 Scale A.10.3 for Temporary Loss of External Services (continued) FIG. 4 Scale A.10.4 for Continuity of Work (During Breakdowns) FIG. 4 Scale A.10.4 for Continuity of Work (During Breakdowns) (continued) 1.3 The entries in the Facility Rating Scale (see Figs. 1-4) are indicative and not comprehensive. They are for quick scanning to estimate approximately, quickly, and economically, how well an office facility is likely to meet the needs of one or another type of occupant group over time. The entries are not for measuring, knowing, or evaluating how an office facility is performing. 1.4 This classification can be used to estimate the level of serviceability of an existing facility. It can also be used to estimate the serviceability of a facility that has been planned but not yet built, such as one for which single-line drawings and outline specifications have been prepared. 1.5 This classification indicates what would cause a facility to be rated at a certain level of serviceability, but does not state how to conduct a serviceability rating nor how to assign...
ASTM E1666-95a(2018) is classified under the following ICS (International Classification for Standards) categories: 35.260 - Office machines. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM E1666-95a(2018) has the following relationships with other standards: It is inter standard links to ASTM E1666-95a(2012), ASTM E631-15, ASTM E631-14, ASTM E1679-13, ASTM E1679-95(2012), ASTM E631-06, ASTM E1679-95(2005), ASTM E1334-95(2005), ASTM E631-93a(1998)e1, ASTM E1679-95(1999), ASTM E1334-95(1999), ASTM E1765-16(2023), ASTM E1663-22. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM E1666-95a(2018) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:E1666 −95a (Reapproved 2018)
Standard Classification for
Serviceability of an Office Facility for Work Outside Normal
1,2
Hours or Conditions
This standard is issued under the fixed designation E1666; 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 serviceability score. That information is found in Practice
E1334. The scales in this classification are complimentary to
1.1 This classification covers pairs of scales for classifying
and compatible with Practice E1334. Each requires the other.
an aspect of the serviceability of an office facility, that is, the
1.6 This international standard was developed in accor-
capability of an office facility to meet certain possible require-
dance with internationally recognized principles on standard-
ments to be able to do normal office tasks outside scheduled
ization established in the Decision on Principles for the
hours.
Development of International Standards, Guides and Recom-
1.2 Within that aspect of serviceability, each pair of scales,
mendations issued by the World Trade Organization Technical
shown in Figs. 1-4, are for classifying one topic of serviceabil-
Barriers to Trade (TBT) Committee.
ity. Each paragraph in an Occupant Requirement Scale (see
Figs. 1-4) summarizes one level of serviceability on that topic,
2. Referenced Documents
which occupants might require. The matching entry in the
2.1 ASTM Standards:
Facility Rating Scale (see Figs. 1-4) is a translation of the
E631 Terminology of Building Constructions
requirement into a description of certain features of a facility
E1334 Practice for Rating the Serviceability of a Building or
which, taken in combination, indicate that the facility is likely
Building-Related Facility (Withdrawn 2013)
to meet that level of required serviceability.
E1679 Practice for Setting the Requirements for the Service-
1.3 The entries in the Facility Rating Scale (see Figs. 1-4)
ability of a Building or Building-Related Facility, and for
are indicative and not comprehensive. They are for quick
Determining What Serviceability is Provided or Proposed
scanningtoestimateapproximately,quickly,andeconomically,
2.2 ISO Document:
how well an office facility is likely to meet the needs of one or
ISO 6240 International Standard, Performance Standards in
another type of occupant group over time. The entries are not
Building—Contents and Presentation
for measuring, knowing, or evaluating how an office facility is
3. Terminology
performing.
3.1 Definitions:
1.4 This classification can be used to estimate the level of
3.1.1 facility—a physical setting used to serve a specific
serviceability of an existing facility. It can also be used to
purpose. E631
estimate the serviceability of a facility that has been planned
3.1.1.1 Discussion—A facility may be within a building, a
but not yet built, such as one for which single-line drawings
whole building, or a building with its site and surrounding
and outline specifications have been prepared.
environment; or it may be a construction that is not a building.
1.5 This classification indicates what would cause a facility
The term encompasses both the physical object and its use.
to be rated at a certain level of serviceability, but does not state
3.1.2 facility serviceability—the capability of a facility to
how to conduct a serviceability rating nor how to assign a
perform the function(s) for which it is designed, used, or
required to be used. E631
This classification is under the jurisdiction of ASTM Committee E06 on
Performance of Buildings and is the direct responsibility of Subcommittee E06.25
on Whole Buildings and Facilities. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2018. Published March 2018. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1995. Last previous edition approved in 2012 as E1666 – 95a (2012). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/E1666-95AR18. the ASTM website.
2 4
Portions of this document are based on material originally prepared by the The last approved version of this historical standard is referenced on
International Centre for Facilities (ICF) and © 1993 by ICF and Minister of Public www.astm.org.
Works and Government Services Canada. Their cooperation in the development of Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
this standard is acknowledged. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
E1666−95a (2018)
FIG. 1Scale A.10.1 for Operation Outside Normal Hours
E1666−95a (2018)
FIG. 1Scale A.10.1 for Operation Outside Normal Hours (continued)
E1666−95a (2018)
FIG. 2Scale A.10.2 for Support After Hours
E1666−95a (2018)
FIG. 2Scale A.10.2 for Support After Hours (contin
...
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