How to complete a Form 16

Guide to understanding Form 16’s: Second instalment

After reading the last two articles we have published on form 16’s – because we are sure you have read them, you should have a clear understanding about the use of Form 16’s and what your responsibilities are under the Building Act 1975.

We will now walk you through the form step-by-step and clearly explain each part and how to fill it out. This will ensure you only fill in the parts you need to, and therefore only certify what you actually need to certify – possibly saving you from a lawsuit in the future.

Stair Nosing types

Stair Nosing – 6 Critical issues

We want you to install stair nosing once and only once.  We often have to tell builders to remove stair nosing and refit them to comply with code requirements.

Here are the 6 critical issues about stair nosing;

  1. Must be non-slip
  2. Must contain a luminance contrast strip not less than 50 mm or more than 75 mm.
  3. The luminance contrast strip must have a luminance contrast of not less than 30%.
  4. No part of the stair nosing strip is to project pass the face of the riser.
  5. The luminance contrast strip cannot project down the riser more than 10 mm.
  6. The luminance contrast strip cannot be more than 15 mm from the front of the riser.

What’s the difference between Class 1 and 2 Dwellings? Here are the basics.

Class 1a Dwelling Units
Class 1a Dwelling units have a separating wall between each dwelling unit that extends continuously from the ground to the underside of the roof of the units.

Class 1 buildings cannot be built on top of each other, and each is totally independent of the adjoining class 1a except they share a separating wall.

Please note I did not use the term fire wall. Separating walls function as fire separation, however, they are not fire walls as defined in the BCA Volume 1.

Class 2 Dwelling Units
Class 2 dwelling units are not independent of each other like Class 1a buildings. They can share entries, hallways and roof space, or be built on top of each other.

In a Class 2 Dwelling, the space contained within the floor, walls and ceiling of the dwelling unit, is separated from the other common parts of the building or other Class 2 Dwellings. The separation is achieved by constructing the bounding floor, walls, and ceilings of the dwelling to comply with the required fire, sound, impact and insulation ratings.

Please note I did not use the term fire walls or separating walls. Class 2 buildings do not use fire walls or separating walls to separate dwelling units.

You can read the technical definitions of these classifications here.

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