[Code of Federal Regulations]
[Title 10, Volume 3]
[Revised as of January 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 10CFR435.101]

[Page 405-408]
 
                            TITLE 10--ENERGY
 
                    CHAPTER II--DEPARTMENT OF ENERGY
 
PART 435--ENERGY CONSERVATION VOLUNTARY PERFORMANCE STANDARDS FOR NEW BUILDINGS; MANDATORY FOR FEDERAL BUILDINGS--Table of Contents
 
Subpart A--Voluntary Performance Standards for New Commercial and Multi-
 Family High Rise Residential Buildings; Mandatory for Federal Buildings
 
Sec. 435.101  Implementation and compliance procedures for Federal agencies.

    Alternative methods of achieving compliance are illustrated in 
Figure 1.1-1.

[[Page 406]]

[GRAPHIC] [TIFF OMITTED] TC04OC91.080

                             1.1  Compliance

    1.1.1  The head of each Federal agency responsible for the 
construction of Federal buildings shall adopt such procedures as may be 
necessary to assure that the design of the building shall:

[[Page 407]]

    1.1.1.1  be undertaken in a manner that provides for appropriate 
consideration of the Principles of Effective Energy Building Design 
prescribed in Secs. 2.0, 3.2, 4.2, 5.2, 6.2, 7.2, 8.2, 9.2 and 10.2;
    1.1.1.2  comply with the minimum requirements of Secs. 3.3, 4.3, 
5.3, 6.3, 7.3, 8.3, 9.3 and 10.3; and
    1.1.1.3  meet or exceed, based upon the analysis of life-cycle cost-
effectiveness required by Sec. 1.1.2 below, the following additional 
requirements:
    1.1.1.3.1  the lighting design shall meet either the prescriptive 
requirements of Sec. 3.4 or the system performance requirements of 
Sec. 3.5,
    1.1.1.3.2  the building envelope design shall meet either the 
prescriptive requirements of section 5.4 or the system performance 
requirements of section 5.5, and
    1.1.1.3.3  the heating, ventilating and air conditioning systems 
design shall meet the prescriptive requirements of section 7.4, and
    1.1.1.3.4  the service water heating systems design shall meet the 
prescriptive requirements of section 9.4.
    1.1.2  In lieu of meeting the provisions of section 1.1.1 above, the 
building design shall meet the criteria of the building energy method of 
section 11.0 or 12.0, Building Energy Compliance Alternatives I and II.
    1.1.3  The head of each Federal agency responsible for the 
construction of Federal buildings shall also assure that the decision-
making process for the design of the building shall employ the 
methodology for estimating and comparing the life-cycle cost of Federal 
buildings and for determining life-cycle cost-effectiveness prescribed 
in subpart A of 10 C.F.R. part 436.

                   1.2  General Approach to Compliance

    1.2.1  The standards, in addition to minimum requirements, establish 
three alternate methods to determine whether the design has achieved 
compliance.
    1.2.2  There are several alternative methods of achieving compliance 
provided for in the standards:
    1.2.2.1  Prescriptive (Sections 3.4, 5.4, 7.4 and 9.4),
    1.2.2.2  System Performance (Sections 3.5 and 5.5), or
    1.2.2.3  Building Energy (Section 11.0 or 12.0).
    1.2.2.4  The criteria established for each of the methods allow for 
designs that are roughly equivalent in terms of energy conservation. The 
equivalency of the methods can be demonstrated by designing a building 
using the Prescriptive approach, then modeling the building using either 
the System Performance or Building Energy criteria calculation 
procedures and comparing results.
    1.2.3  Compliance with these standards shall be demonstrated by 
meeting the set of minimum requirements defined in Sections 3.2, 3.3, 
4.2, 4.3, 5.2, 5.3, 6.2, 6.3, 7.2, 7.3, 8.2, 8.3, 9.2, 9.3, 10.2, and 
10.3 and one of the alternative methods.

                 1.3  How To Select a Compliance Method

    1.3.1  Use the Prescriptive method when the minimum amount of 
calculation and effort to achieve compliance is of primary concern. Its 
requirements can be readily specified in construction documents and are 
easily reviewed by building code enforcement authorities. The 
Prescriptive method permits few trade-offs or optimization procedures, 
but does permit several energy-effective and cost-effective alternate 
construction options to be used. See Figure 1.1-2.
    1.3.2  Use the System Performance method when more innovative design 
is required, or when the Prescriptive method does not provide the 
necessary design flexibility. It requires more manual calculations than 
the Prescriptive method. See Figure 1.1-2
    1.3.3  Use either of the Building Energy methods (Sections 11.0 or 
12.0) when the most innovative design concepts are being considered. The 
Building Energy methods allow the trade-off of energy among the building 
systems as long as the total calculated design annual energy consumption 
does not exceed the limit prescribed. It will, in general, require the 
use of a computer program to simulate the operation of the various 
systems and to model building design energy use in accordance with the 
building loads and the proposed schedules of operation. See Figures 11-1 
and 12-1.
     

[[Page 408]]

[GRAPHIC] [TIFF OMITTED] TC04OC91.081


[[Page 409]]