Windows, window walls or curtain walls

Contractors can only undertake the relevant classes or items of minor works for which they have been registered.

Windows or Window Walls

Construction/Alteration

Class II

2.8

Construction/Alteration

1. Distance from ground 3.5m - 100m:
   • The works involve the main frame of the window; or
   • The works involve the sub-frame of the window & length of the sub-frame
     > 1.2m
2. Distance from ground
   > 100m:
   • Area of the external wall opening for the window
     ≤ 6m²; and
   • Length or width (whichever is shorter) of the opening
     ≤ 1.8m

More details

Class III

3.6

Construction/Alteration

1. Distance from ground 3.5m - 100m:
   • The works involve the sub-frame of the window only; and
   • Length of the sub-frame
     ≤ 1.2m
2. Distance from ground
   ≤ 3.5 m:
   • Span of structural element of the window
     ≤ 6m

More details

Repair/Replacement

Class I

1.60

Repair/Replacement

1. Span of structural element of the window:
   Any
2. Distance from ground:
   Any
   
3. In accordance with the original design

More details

Class II

2.8

Repair/Replacement

1. Span of structural element of the window
   ≤ 6m
2. Distance from ground 3.5m - 100m:
   • The works involve the main frame of the window; or
   • The works involve the sub-frame of the window & length of the sub-frame
     > 1.2m
3. Distance from ground
   > 100 m:
   • If not in accordance with the original design
     • area of the external wall opening for the window
       ≤ 6m²; and
     • length or width (whichever is shorter) of the opening
       ≤ 1.8m; or
       
   • In accordance with the original design

More details

Class III

3.6

Repair/Replacement

1. Distance from ground
   ≤ 3.5m:
   • Span of structural element of the window
     ≤ 6m
2. Distance from ground 3.5m - 100m:
   • The works involve the sub-frame of the window only; and
   • Length of the sub-frame
     ≤ 1.2m

More details

Removal

Class II

2.9

Removal

1. Distance from ground
   > 3.5m
2. Window height
   ≤ 6m

More details

Class III

3.7

Removal

1. Distance from ground
   ≤ 3.5m

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Curtain walls

Repair/Replacement

Class I

1.61

Repair/Replacement

1. In accordance with the original design
2. Not involve the replacement of any supporting structure or structural elements that connects the wall to its parent structure

More details