Choice of foundation is one of the most prominent issues in building a new house. Commonly there are two types of footings: shallow footing and deep footing. If you build up a single story and soil condition is good, then shallow foundation could be the best option as it costs less than deep foundation. However, when you build a over two story house which requires large compose loads, and soil conditions are poor, or there is site constraints with asset boundaries, then you have to reconsider deep footings.
Shallow foundation Shallow Footings are embedded into soil at relatively shallow. Common shallow footings are pad footing, slab-on-floor, Ribraft foundation and strip footing concrete (or other materials) which increase below the frost line and replacement the loads from walls and columns to the soil or bedrock.
DRYWALL SETTLEMENT
1. Pad Footings A concrete pad footing is the simplest and cost efficient footing used for the vertical maintain and the replacement of building loads to the ground. These footings are "isolated" (i.e. There is no association in the middle of them). They are also reinforced and Commonly used to maintain lightweight timber construction.
2. Strip Footings Strip footings are used to maintain a line of loads, whether due to a load bearing wall, or if a line of columns need supporting where column positions are so close that individual pad footings would be inappropriate. Strip footings can be used for both original timber and concrete floors.
Shallow footings are cost efficient. building procedures are Commonly very simple. They are exiguous use of materials - reinforcing steel and concrete. You do not want high level of expertise any way there could be more settlement with this type of foundation. This law has a exiguous capacity - structure size dependent soil strength. exiguous use where there is irregular ground surface. Foundations are more susceptible to pullout, torsion and movement.
Deep footings as their name indicated, are footings that are embedded deep into the ground. Deep footings are known as piles, drilled shafts, caissons and piers. They can be constructed of timber, steel, reinforced concrete, and pre-tensioned concrete. Factors influencing option of foundation There are many factors that can affect the option of foundation. All factors need to be carefully and their relative point taken into account before reaching a final decision.
1. Location and type of structure
2. Ground conditions
3. Durability
4. Cost
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