Energy Conservation in Federal and Federally Assisted Buildings

DESIGN AND EVALUATION CRITERIA
FOR ENERGY CONSERVATION
IN NEW BUILDINGS

NBSIR 74-452

February 27, 1974

62-963 O-76-30

U.S. DEPARTMENT OF COMMERCE
National Bureau of Standards

Washington, DC. 20234

Prepared for:

NATIONAL CONFERENCE OF STATES

ON BUILDING CODES AND STANDARDS

The "Design and Evaluation Criteria for Energy Conservation in New
Buildings" was developed in response to the July 12, 1973 request
of the National Conference of States on Building Codes and Standards
to provide the technical basis for a performance-type standard.
Although this document is comprehensive in its technical scope, it
is not practical at this time to develop a single document which would
be universally applicable to all types of buildings in a uniform

manner.

It is our recommendation that this document be used as the basis for the development of a consensus standard to apply to new construction for all building types except those excluded in the following paragraph. It is also our recommendation that the States be advised not to use the document in its present form for regulatory purposes.

The following recommendations are made with respect to:

Residential buildings including manufactured housing (one-
and two-family)

The Federal Housing Administration's Minimum Property
Standard 51b should be used as an interim standard.

• A consensus standard for one- and two-family housing
should be developed using this document as a guideline
to expand the scope covered by MPS 51b. It should include
such factors as: air infiltration, usage of glass,
illumination levels, and electrical distribution systems.
It should seek to eliminate wasteful practices in heating,
ventilation, air conditioning, and service water systems.

As an interim measure, the States should investigate the
possibility of initiating a voluntary labeling program

Mobile Homes

The Coordinating Committee of the National Mobile Home
Standard should be requested to sponsor and appoint a
new subcommittee to develop an energy conservation
supplement to ANSI A119.1. This supplement should be
completed by July 1, 1974, using this document as a
guideline.

Industrial buildings, monument buildings, short-term periodic use buildings such as vacation shelters, or buildings containing special laboratories

Instead of using this document, special energy conservation measures applying to these buildings should be developed which take into consideration the special conditions which prevail.

As indicated in your November 19, 1973 letter to Dr. Richard Roberts, Director of the National Bureau of Standards, performance standards cannot be utilized without changes in the structure of the building regulatory system. It is recommended that NCSBCS at its February 27, 1974 meeting study what tasks need to be done to make performance standards workable and designate appropriate organizations to carry out the identified tasks. The completion of these tasks should be scheduled so that the regulatory system is capable of handling a performancetype standard when the consensus standard based on this document has been completed.

Sincerely,

I. Karl Willen Kirch

F. Karl Willenbrock, Director

Institute for Applied Technology

ERRATA SHEET NO. 1

March 8, 1974

NBSIR 74-452, Design and Evaluation Criteria for
Energy Conservation in New Buildings
February 27, 1974

The following corrections should be incorporated into the referenced pages and paragraphs of NBSIR 74-452.

1. Page 9, Definition for Full-Load Energy Utilization Efficiency

Add the following missing equation, after line 5:

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