What are House Footings
Footings are the first part of a house that is built, and they stop your house shifting from its intended position.
The site is levelled by earthmoving equipment, and then preparations for building the footings are made.
Footings support the weight of your house and therefore hold it together. If unsuitable footings are built for a house, the end result is that the house will crack, become unlevel, or in the worst cases eventually become uninhabitable or fall down.
Unfortunately, some people have discounted the importance of building good footings because they are not a visual component, and have gone for cost cutting methods which ultimately cost them a lot of money in repair bills down the track. Others have used substantial foundations which are not suitable to their particular site, and that causes problems at a later date too. Screw Piling is a technological solution which differs from traditional methods.
It is important not to put the rest of your building investment at risk... Build your footings right the first time!!
How to Decide Which Footing System to Use:
This depends on two things:
1.The type of house you are building:
If you are building a house which includes many of the following, then your house will be heavy. This means that your footing system will need to be substantial to handle the higher loads, and will typically come at an increased cost.
- Concrete slabs
- Double brick walls (known as "full-brick")
- Multi-storey (particularly if concrete slabs are used for floors at all levels)
- Tile roofing
- Large load-bearing concrete columns and walls ("framing").
If you are building a house which includes many of the following, then your house will be lighter and you will be able to use a foundation system which typically would not cost as much.
- Steel frame (advantage is they are truly straight, and unaffected by vermin)
- Timber frame
- Virtually any floor system which is not concrete
- Cladded walls (metal or timber)
- Metal roofing
2. The type of ground you are building on:
Determining the type of ground conditions which your site may have is something that should be done by a professional Geotechnical Engineer. This really ought to be done before you buy your home site, because if it is found that the ground is "weak", then it is likely that more extensive foundation systems are needed which typically come at a greater cost. Prior planning will save you money.
This may give you some bargaining leverage for negotiating the purchase price of your site.
You can find Geotechnical Engineers in your local directory under Geotechnical Services. For a modest fee, these companies specialise in determining what the underlying ground conditions on building sites are and how "strong" the ground is, and can then give you a range of options from which to choose your most suitable foundation system. The first shortcut most people take is to not get geotechnical advice. Geotechnical advice is money well spent, as it ensures your foundations will not be under designed (and fail), or over designed (and cost more than they should have).
|