Buildings in New Zealand must comply with the Building Code to ensure that they are safe, healthy and durable for everyone who may use them.  The code is broken down into a number of sections; H1 Energy Efficiency sets out parameters to achieve energy efficient design in terms of temperature, humidity, ventilation, the provision of hot water and artificial lighting.  Compliance with the code can be achieved via calculation or modelling depending on the design of the building. 

Dewick & Associates provided thermal performance modelling simulations for a proposed new residence at Tai Tapu.  The proposed residence incorporated glazing greater than 40% of the wall area and therefore required computational analysis to be carried out in-accordance with the requirements of NZS 4218:2009 “Modelling Method”.   For compliance, annual heating load and cooling loads of the proposed and reference buildings are compared; the proposed building loads must not exceed that of the reference buildings.  The building was modelled using IES Virtual Environment (VE) dynamic computer modelling software, consistent with the requirements stipulated in NZS 4218:2009 Appendix G.

To show compliance, Dewick & Associates provided a full Engineering Report to detail the method of compliance, simulation parameters and a clear explanation of the results / findings.  We were pleased to be able to confirm the proposed residence complied with the code requirements.

Mechanical Services Contractor: Beattie Air