Roofing, Fire, Coatings and Glass

Roofing Industries

David Eccles Hall

Talk topic: MRM Code of Practice on Rainwater systems.

David will be talking on the design of water drainage from the time it hits the roof cladding to the time it enters the down pipe. As the design considerations are similar, this also includes the discharge from gutters and troughs within the roof plane, valleys, internal gutters, and external spouting.

• How to use the calculator!
• Refer to the Rainfall intensity for a site, using NIWA’s HIRDS tool.
• Alternative to the NZBC Clause E1
• The calculator gives more option to E1, but it is more conservative then E1

Metro Performance Glass

Aaron Cooper

Talk topic: Glass as a material for balustrades

Summary:

An introduction to using glass as a suitable material for safety from falling barriers and pool fences. The main benefit of glass in these applications is it’s clear nature, which enables an uninterrupted view of the surrounding landscape / vista, or ease of visual checking of a pool space. There are a wide range of glass options available to suit various installation requirements (toughened with a rail, laminated without a rail, digital printed or frosted for privacy, etc). It is important to remember that the glass and it’s mounting hardware must be compatible / matched to form the safety system as a whole – substituting or altering either component can compromise the performance and therefore may no longer comply with the Building Code requirements. NZBC compliance can be demonstrated through NZS4223 balustrade tables (for framed and partially framed systems) or through a producer statement for design, commonly known as a PS1 (which is then backed-up by a PS3 during/after installation). Frameless glass options (including a PS1) are now available for a large range of pool fence and balustrade installations, including a fully frameless option for C5 applications. The expected cleaning requirements of glass can be reduced by using modern coating technology such as EziClean.

Learning Outcomes:

• What makes glass a great material for balustrades and pool fences.
• Importance of considering both glass and mounting hardware as a combined system for safety barriers.
• How to ensure a glass barrier is compliant with NZBC (obtain a PS1 document).
• How frameless glass can be used for C5 occupancy barriers (area’s such as stadiums, theatre’s, bars etc which may be subject to overcrowding).
• Ways to reduce cleaning of glass (EziClean) to maintain good aesthetics over time.