specification with the same identification number, the
writer must use the one that has the most recent date.
This is because there can only be one valid guide
specification for a particular area at any one time.
3. STANDARD SPECIFICATIONS. These
specifications are written for a small group of
specialized structures that must have uniform
construction to meet rigid operational requirements.
NAVFAC standard specifications contain references to
federal, military, other command and bureau, and
association specifications. NAVFAC standard
specifications are referenced or copied in project
specifications. When it is necessary to modify
requirements of a standard specification, it must be
referenced and exceptions taken.
EXAMPLE: The magazine shall be Arch, Type I,
conforming to Specifications S-M8E, except that all
concrete shall be Class F- 1.
The following specifications establish requirements
mainly in terms of performance. Referencing these
documents in project specifications assures the
procurement of economical facility components and
services while considerably reducing the verbiage
required to state such requirements.
1. FEDERAL AND MILITARY SPECIFICA-
TIONS. Federal specifications cover the character-
istics of materials and supplies used jointly by the Navy
and other government agencies. These specifications do
not cover installation or workmanship for a particular
project but specify the technical requirements and tests
for materials, products, or services. The engineering
technical library should contain all of the commonly
used federal specifications pertinent to Seabee
construction. Military specifications are those
specifications that have been developed by the
Department of Defense. Like federal specifications,
they also cover the characteristics of materials. They are
identified by DOD or MIL preceding the first letter
and serial number.
2. TECHNICAL SOCIETY AND TRADE
ASSOCIATION SPECIFICATIONS. Technical
society specifications for example, those published
by the American National Standards Institute (ANSI),
American Society for Testing and Materials (ASTM),
Underwriters Laboratories (UL), and American Iron
and Steel Institute (AISI)should be referenced in
project specifications when applicable. Trade
association specifications contain the requirements
among the companies within a given industry.
3. MANUFACTURERS SPECIFICATIONS.
These specifications contain a manufacturers precise
description for the manner and process for making,
constructing or compounding, and using any items the
manufacturer produces. They should not be referenced
or copied verbatim in project specifications but maybe
used to aid in preparing project specifications.
Construction drawings are supplemented by written
project specifications. Project specifications give
detailed information regarding materials and methods
of work for a particular construction project. They cover
various factors relating to the project, such as general
conditions, scope of work, quality of materials,
standards of workmanship, and protection of finished
The drawings, together with the project specifica-
tions, define the project in detail and show exactly how
it is to be constructed. Usually, any set of drawings for
an important project is accompanied by a set of project
specifications. The drawings and project specifications
are inseparable. The drawings indicate what the project
specifications do not cover; the project specifications
indicate what the drawings do not portray, or they further
clarify details that are not covered amply by the
drawings and notes on the drawings. When you are
preparing project specification, it is important that the
specifications and drawings be closely coordinated so
that discrepancies and ambiguities are minimized.
Whenever there is conflicting information between the
drawings and project specs, the specifications take
precedence over the drawings.
Organization of Specifications
For consistency, the Construction Standards
Institute (CSI) organized the format of specifications
into 16 basic divisions. These divisions, used throughout
the military and civilian construction industry, are listed
in order as follows:
1. General Requirements. Includes information
that is of a general nature to the project, such as
inspection requirements and environmental protection.
2. Site Work. Includes work performed on the
site, such as grading, excavation, compaction, drainage,
site utilities, and paving.