ASTM E1557-01

Designation: E 1557 – 01
Standard Classification for
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Building Elements and Related Sitework—UNIFORMAT II
This standard is issued under the fixed designation E 1557; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 1074 Practice for Measuring Net Benefits for Investments
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in Buildings and Building Systems
1.1 This standard establishes a classification of building
E 1121 Practice for Measuring Payback for Investments in
elements and related sitework. Elements, as defined here, are
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Buildings and Building Systems
major components common to most buildings. Elements usu-
E 1185 Guide for Selecting Economic Methods for Evalu-
ally perform a given function, regardless of the design speci-
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ating Investments in Buildings and Building Systems
fication, construction method, or materials used. The classifi-
E 1369 Guide for Selecting Techniques for Treating Uncer-
cation serves as a consistent reference for analysis, evaluation,
tainty and Risk in the Economic Evaluation of Buildings
and monitoring during the feasibility, planning, and design
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and Building Systems
stages of buildings. Using UNIFORMAT II ensures consis-
E 1804 Practice for Performing and Reporting Cost Analy-
tency in the economic evaluation of buildings projects over
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sis during the Design Phase of a Building Project
time and from project to project. It also enhances reporting at
E 2083 Standard Classification for Building Construction
all stages in construction—from feasibility and planning
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Field Requirements, Office Overhead Profit
through the preparation of working documents, construction,
2.2 ASTM Adjuncts:
maintenance, rehabilitation, and disposal.
Discount Factor Tables, Adjunct to Practices E 917, E 964,
1.2 This classification applies to buildings and related site
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E 1057, and E 1074
work. It excludes specialized process equipment related to a
Computer Program and User’s Guide to Building Mainte-
building’s functional use but does include furnishings and
nance, Repair, and Replacement Database for Life-Cycle
equipment.
Cost Analysis, Adjunct to Practices E 917, E 964, E 1057,
1.3 The Classification incorporates three hierarchical levels
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and E 1121
described as Levels 1, 2, and 3. Appendix X1 presents a more
detailed suggested Level 4 classification of sub-elements.
3. Terminology
1.4 UNIFORMAT II is an elemental format similar to the
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3.1 Definitions—For definitions of terms used in this clas-
original UNIFORMAT elemental classification. UNIFOR-
sification, refer to Terminology E 833.
MAT II differs from the original UNIFORMAT, however, in
that it takes into consideration a broader range of building
4. Significance and Use
types and has been updated to categorize building elements as
4.1 This classification defines building elements as major
they are in current building practice.
components to most buildings. The classification is the com-
mon thread linking activities and participants in a building
2. Referenced Documents
project from initial planning through operations, maintenance,
2.1 ASTM Standards:
3 and disposal.
E 833 Terminology of Building Economics
4.2 The users of UNIFORMAT II include owners, develop-
E 917 Practice for Measuring Life-Cycle Costs of Buildings
3 ers, facilities programmers, cost planners, estimators, schedul-
and Building Systems
ers, architects and engineers, specification writers, operating
E 964 Practice for Measuring Benefit-to-Cost and Savings-
3 and maintenance staff, manufacturers, and educators.
to-Investment Ratios for Buildings and Building Systems
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4.3 Use this classification when doing the following:
E 1057 Practice for Measuring Internal Rate of Return and
Adjusted Internal Rate of Return for Investments in Build-
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ings and Building Systems
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Available from ASTM Headquarters. Order PCN 12-509179-10.
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Available from ASTM Headquarters. Order PCN 12-509171-10 for the 3.5 in.
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This classification is under the jurisdiction of ASTM Committee E06 on disk. Order PCN 12-509172-10 for the 5.25 in. disk.
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Performance of Buildings and is the direct responsibility of Subcommittee E06.81 For a more comprehensive discussion of the uses of UNIFORMAT II, see
on Building Economics. Bowen, Charette, and Marshall, UNIFORMAT II—A Recommended Classification
Current edition approved April 10, 2001. Published July 2001. Originally for Building Elements and Related Sitework, National Institute of Standards and
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published as E 1557 – 93. Last previous edition E 1557 – 97 . Technology Special Publication 841, Gaithersburg, MD, 1992, and Charette and
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The original UNIFORMAT classification was developed jointly by the General Marshall, UNIFORMAT II Elemental Classification for Building Specifications,
Services Administration (GSA) and the American Institute of Architects (AIA).
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