PM23 H1 Guide TUMU 210x287mm 4.0 LR - Flipbook - Page 3
COMPLIANCE
PATHWAYS
There are different ways to show that a building complies with the Building Code.
One way is through the use of acceptable solutions or verification methods. For the
insulation requirements of H1 Energy Efficiency, there are two updated acceptable
solutions and two verification methods that can be used to demonstrate that a
building’s thermal resistance will meet the new requirements. Thermal resistance how well the building is insulated - is specified in these documents using R-values
ALTERNATIVE SOLUTIONS
USUALLY REQUIRE SPECIFIC DESIGN AND
INPUT FROM SUITABLY QUALIFIED PEOPLE,
SUCH AS ARCHITECTS OR ENGINEERS.
VERIFICATION METHODS
ACCEPTABLE SOLUTIONS
If designers or builders want to comply with the
Building Code performance requirements directly,
they may also choose to use an alternative solution
as a compliance pathway.
The verification methods for H1 (H1/VM1 & H1/VM2)
contain rules for design professionals using computer
modelling and software to determine the minimum
amount of insulation required in a building and to
demonstrate compliance with the Building Code. Only
H1/VM1 can be used for housing and ‘Buildings less
than 300m²’. Read more about H1/VM2 on pages 18-19.
The acceptable solutions for H1 (H1/AS1 & H1/AS2)
contain tables and a simple calculation method to
determine the R-values in a building. Only H1/AS1 can
be used for housing and ‘Buildings less than 300m²’.
Read more on H1/VM2 on pages 18-19.
This will usually require specific design and input
from suitably qualified people, such as architects or
engineers. Alternative solutions are not deemed to
comply with the Building Code and must be assessed
by the relevant Building Consent Authority on their
individual technical merits.
BUILDING
ACT
For the insulation requirements, the
alternative solution must satisfy the
Performance Criteria in clause H1.3.1(a).
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ALTERNATIVE SOLUTIONS
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Objectives, Functional requirements,
Performance criteria
ALTERNATIVE
SOLUTIONS
H1/VM1: This verification method can be used for all
housing (of any size) and some other types of small
building with an area of occupied space up to 300m² –
the same building types that fall under H1/AS1.
However, unlike H1/AS1, there are no limitations on the
type of construction elements and specific designs
the document covers for these buildings.
The method used to determine the minimum insulation
requirements is based on computer modelling and
known as the Modelling method. Users of this method
are expected to have specific training and expertise to
conduct the simulations.
H1/AS1: This acceptable solution can be used for all
housing (of any size) and other types of small building
with an area of occupied space up to 300m². Housing
and small buildings have similar heating and cooling
requirements. To determine the minimum insulation
requirements, this document contains two methods –
Schedule and Calculation.
These methods are intended to be used by anyone
but have limitations for when they can be used. This
cannot be used if your building has a curtain wall.
VERIFICATION ACCEPTABLE
METHODS*
SOLUTIONS*
Must demonstrate compliance
with Performance criteria
Deemed to comply with Performance
criteria
GUIDANCE ISSUED UNDER THE BUILDING ACT
EDUCATION AND INFORMATION
4
*May include cited standards and information
TUMU H1 GUIDE
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