Metal edge is the 2mm to 3mm thick Galvanized Sheet which are mainly placed in the building edges of the Slab to stop the overflow of concrete while pouring on the Bubble deck Slab arrangements.
Metal edges are fixed in the factory and not on site; it will be fixed while pouring the minimum thickness concrete slab biscuit. So the metal edge are comes under the category of castin items in Bubbledeck Slab.
Application of Metal edges:
- Bubbledeck Slab Edges that connects to Post fixed precast wall (Post fix wall will be erected once after the bubbledeck Slab are installed and Poured).
- Slab edges which are free from the wall. Especially near to balustrade Areas
- Duct and services void in slab which is present inside the Building
- Soffiit Step / Slab fall in slab
Advantages :
- Fine Finish of slab edge (Visible edges) can be obtained
- No side shuttering is needed
- Site work can be reduce due to fixing in factory long with min concrete Slab pouring
Disadvantages:
- The cost of Metal edge sheet is high compare to timber because of galvanized
- The metal edge to be order 10 days prior from casting on minimum concrete because of sheet galvanizing
Handling Problem:
The Metal edge is not safe to use 450mm and above height. This may lead to bend and damage of metal edge sheet during the time of Bubbledeck Biscuit Transportation.
The Metal edge can’t be fixed on the round edge profiles of slab and applicable only for square edge Profile.
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