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Interpretation 90.1-2001-1 - April 22, 2002 (Ref. Section 4.1.2.1, Additions to Existing Buildings, and 4.1.2.2, Alterations to Existing Buildings)
Interpretation 90.1-2001-2 April 22, 2002 (Ref. water heater requirements in Section 7.2.2 and Table 7.2.2)
Interpretation 90.1-2001-3 - April 22, 2002 (Ref. requirements in Section 11.4.2(c) relating to budget building envelope model glazing characteristics)
Interpretation 90.1-2001-4 - April 22, 2002 (Ref. subsections 11.4.3(a) and (d) in combination with Subsection 6.3.6.1)
Interpretation 90.1-2001-5 - April 22, 2002 (Ref. requirements in Section 9.3.2 relating to the exterior lighting power allowance)
Interpretation 90.1-2001-6 - April 22, 2002 (Ref. requirements in Section 5.5.3.4, Vestibules)
Interpretation 90.1-2001-7 - June 23, 2002 (Ref. Section 6.3.6.1, Exhaust Air Energy Recovery)
Interpretation 90.1-2001-8 - January 25, 2004 (Ref. Section 9.3.1.2, relating to interior lighting power allowance)
Interpretation 90.1-2001-9 - January 26, 2003 (Ref. Section 6.3.1 Economizers, specifically Exception 6.3.1i relating to the cooling efficiency and the efficiency requirements in Table 6.1.3.)
Interpretation 90.1-2001-10 - January 25, 2004 (Ref. to the requirements presented in ANSI/ASHRAE/IESNA Standard 90.1-2001, Section 6.2.3.3.4 and in the accompanying Table 6.2.3.3.4 'Maximum Damper Leakage'.)
Interpretation 90.1-2001-11 - January 25, 2004 (Ref. refers to the requirements presented in ANSI/ASHRAE/IESNA Standard 90.1-2001, Section 6.3.3.1 Fan Power Limitation, and Table 6.3.3.1, specifically relating to fan power limitation ratios.)
Interpretation 90.1-2001-12 - January 25, 2004 (Ref. to the requirements presented in ANSI/ASHRAE/IESNA Standard 90.1-2001, Section 5 Building Envelope, specifically Sections 5.1.4, 5.2.1, 5.3.1d, 5.3.1.4 and Figure 5.3 relating to floor insulation.)
Interpretation 90.1-2001-13 - February 7, 2005 (Ref. to the requirements presented in ANSI/ASHRAE/IESNA Standard 90.1-2001, Section 6.3.3.1 and Table 6.3.3.1 Fan Power Limitation)
Interpretation 90.1-2001-14 - February 7, 2005 (Ref. to the requirements presented in ANSI/ASHRAE/IESNA Standard 90.1-2001, Section 6.2.1, related to mechanical equipment efficiency and certification.)
Interpretation 90.1-2001-15 - February 7, 2005 (Ref. to the requirements presented in ANSI/ASHRAE/IESNA Standard 90.1-2001, Section 6.3.3.1, related to Fan Power Limitation for Laboratory Systems.)
Interpretation 90.1-2001-16 - February 7, 2005 (Ref. to the requirements presented in ANSI/ASHRAE/IESNA Standard 90.1-2001, Section 7 Service Water Heating, specifically Section 7.2.6 relating to heat traps serving storage water heaters and storage tanks.)
Interpretation 90.1-2001-17 - June 22, 2008 (Refers to the requirements presented in ANSI/ASHRAE/IESNA Standard 90.1-2001, Section 9.3.1.2(c), relating to selection of a space type and the resulting lighting power allowance when using the Space-by-Space Method)