Curtain Wall selection is dependent on the following;

• glass type required – either Single Glazed or Insulated Glass Units (IGUs) and;
• the depth of the frame - selected for either aesthetic reasons, or is dependent on the desired spans or given wind loads.

There are three pieces of information required to determine this:

1. Thermal requirements – U-Value, SHGC and VLT criteria determined from the NCC Section J form or JV3 findings are needed. This is done by the project ESD consultant.
2. Acoustics – An acoustic consultant will give you the Rw criteria required.
3. Loading Criteria – A structural engineering consultant calculates this information, to be provided to G.James on the Wind Load Requirements form. (Façade local wind pressures to be calculated according to AS/NZS 1170.2)

Most G.James suites have captive and structural glazed options, and both can be incorporated to provide desired aesthetics.

Note: The practicalities of structural glazing may be restricted in high wind load/cyclonic areas.

Refer to the table below for a comparison of the suites available.