I have been reading a few books on hollow core and here is the notes I have got so far to help me with my assignment.
Hollow core:
- Pre cast, pre stressed, excellent fire resistance
- Allows for fast construction as made off site
- Planks are 1200mm wide, thickness between 150mm-400mm
- Wall panels are standard widths of 1200mm-2400mm
- Casting bed is between 120m-170m in length, planks saw cut to size
- The voids allow sound insulation, reduce dead weight, conceal wiring and ducts, eg. lighting circuits. Slabs with heated are through cores can be used as a thermal mass in passive solar application.
- Topping on floor planks is a cement based skim coat to top surface of slabs. This allows direct installation of floor coverings as well as allowing the floor to act as one composite element.
- Structural topping a minimum of 60 mm thick for up to 200mm deep planks, 80mm thick for 300mm deep planks. Topping provides a level working surface.
- Non structural topping usually self leveling mortar at 10-15 mm average thickness
- Camber- topping thickness to follow camber of the planks or not, varies with each situation.
- Construction joints- saw cut made within 18 hrs of casting topping
Book list
Verge, G.C, 'Hollow core floor technical manual', 2nd ed, National precast Concrete Association of Australia, North Sydney, 199-
'Tilt-up construction notes / Cement and Concrete Association of Australia', Cement and Concrete Association of Australia, North Sydney, N.S.W., 1997
'Guide to concrete construction / a joint publication of Cement and Concrete Association of Australia and Standards Australia', 2nd ed., Cement and Concrete Association of Australia ; Homebush, Standards Australia, 2002
Helpful websites
- National Precast Association Australia, www.npcaa.com.au
Two manuals I was able to download have been even more helpful than the above books which I found in the library. They are:
'Hollowcore Walling- Technical Manual', National Precast Association Australia, 1992
'Hollowcore Flooring- Technical Manual', National Precast Association Australia, 2003
- Concrete Institute of Australia, www.coninst.com.au/
- Allows for fast construction as made off site
- Planks are 1200mm wide, thickness between 150mm-400mm
- Wall panels are standard widths of 1200mm-2400mm
- Casting bed is between 120m-170m in length, planks saw cut to size
- The voids allow sound insulation, reduce dead weight, conceal wiring and ducts, eg. lighting circuits. Slabs with heated are through cores can be used as a thermal mass in passive solar application.
- Topping on floor planks is a cement based skim coat to top surface of slabs. This allows direct installation of floor coverings as well as allowing the floor to act as one composite element.
- Structural topping a minimum of 60 mm thick for up to 200mm deep planks, 80mm thick for 300mm deep planks. Topping provides a level working surface.
- Non structural topping usually self leveling mortar at 10-15 mm average thickness
- Camber- topping thickness to follow camber of the planks or not, varies with each situation.
- Construction joints- saw cut made within 18 hrs of casting topping
Book list
Verge, G.C, 'Hollow core floor technical manual', 2nd ed, National precast Concrete Association of Australia, North Sydney, 199-
'Tilt-up construction notes / Cement and Concrete Association of Australia', Cement and Concrete Association of Australia, North Sydney, N.S.W., 1997
'Guide to concrete construction / a joint publication of Cement and Concrete Association of Australia and Standards Australia', 2nd ed., Cement and Concrete Association of Australia ; Homebush, Standards Australia, 2002
Helpful websites
- National Precast Association Australia, www.npcaa.com.au
Two manuals I was able to download have been even more helpful than the above books which I found in the library. They are:
'Hollowcore Walling- Technical Manual', National Precast Association Australia, 1992
'Hollowcore Flooring- Technical Manual', National Precast Association Australia, 2003
- Concrete Institute of Australia, www.coninst.com.au/
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