Roofing Standards Nz

These systems are assembled in the uppermost part of building structures to provide protection and insulation from external elements such as rain sunlight and heat.

Roofing standards nz.

A maximum truss span of 12 m a maximum truss spacing of 900 mm for a heavy roof and 1200 mm for a light roof the load on the ends of the trusses to be no more than 16 kn in both directions up and down a maximum snow load of 2 kpa. G300 is used for forming tiles or curved roof sections or where greater ductility is required. It is guaranteed to transmit natural light for a period of 25 years while retaining. Durolite natural lighting sheets for roofs and walls provide good strength and durability for commercial building applications.

The contents of this code of practice are relevant to other countries. Ranz works on behalf of its members to develop industry communication regulation training and more for improvement in housing quality and the industry as a whole. We specialise in managing the development of standards. Ranz members have passed strict criteria to gain membership status.

We also publish and sell new zealand joint australia new zealand and international standards. Most steel used for roof and wall cladding in nz is nominally g550 although this often has actual strength up to 700 mpa. A number of new zealand and joint australian new zealand standards cover roof construction roofing materials and components. The new zealand roof and wall cladding code of practice has been written for new zealand conditions that recognize it as an unique island 2 000 km away from another major land mass which is subject to high rainfall high humidity extremes of weather and high winds.

Astm s roofing standards are instrumental in specifying testing and evaluating the dimensional mechanical and performance requirements of various forms of roofing systems. Durolite is a premium grade glass fibre reinforced polyester sheet manufactured using advanced gel coat technology with an integral 100 micron thick gel coat on the top surface. Standards new zealand is a business unit within the ministry of business innovation and employment. Steel based products used for cladding in new zealand are either nominally g300 or g550 high tensile mpa.

Published by standards new zealand the trading arm of the standards council private bag 2439 wellington 6140. Each length can be readily covered by the roofing to reduce the risk of wind action on the material without the need for multiple rolls being kept on the roof for any roof handling long lengths of light flexible material can be difficult.