In the renovation of a house, the underpinning process is the one where strengthening of the foundation of the house is done. The solid used for foundation changes due to the usage of several years. So for a better and stronger foundation, the soil is replaced. It is a process of providing extra support underneath the house. The cost of underpinning a house varies as per different ways of working.
Different Kinds of Underpinning and the Cost of Underpinning a House Individually
Mass concrete pours: This involves digging the foundations and filling it with concrete to make it stronger. It makes the foundation reinforcements stronger. No heavy equipment is used in this process. It costs very low.
Beam method: This is a method where more mass of concrete is needed. In this situation, deep holes are dug and filled with concrete which is needed for strong foundations. It requires some special equipment and techniques. Therefore, this is a very expensive method.
Pile method: This method is required in situations where deep foundations are needed for the house. It is often more than five meters deep. This technique is a special one and is done with the use of special equipment which is very expensive. Thus, the cost of underpinning a house is expensive.
Factors Which Affect the Cost of Underpinning a House
Materials used: Materials used for underpinning a house affects the cost a lot. The materials used depend on the soil on which that house stands. Thus, the materials could be expensive and cheap which totally depends on the area of the soil. To be on the safer side, those materials should be used which keeps the foundation as strong as possible.
Residential location: The cost of underpinning also depends on the location where the house is situated. As the material depends on the soil, the soil depends on the location of the house where it is situated. Some places are very easy to work and do not require high technique instruments but some soil is so hard that require highly specialized equipment which increases the overall cost.
Property size: The size of the property is one of the important factors and the cost might be variable depending on the size. Some properties might be huge in size, which might lead to lots of workers, equipment and other materials which automatically increases the overall cost. Thus, smaller the property, cheaper the cost of underpinning a house.
Dimensions of foundation: The width of the foundation is a very important factor. The hole is not directly dug, the measurements of the width and depth of the foundation play an important role. According to the dimensions further steps are taken and according to the labor and process used, the cost is decided.
Permitting cost: This is a cost which has to be given to the contractor for buying different equipment and materials that are needed for the underpinning work. All these costs are also important because this cost might sometimes go higher than the normal pre-decided budget.
Other factors: Some other factors which might affect the cost of underpinning a house are some technical issues or some economic factors like the markets or the competition factors.
Thus, to begin with, a basic idea should be taken along with the kinds of underpinning and then the only the final decision should be made. Underpinning is very crucial for the house so care should be taken to employ the best of people available at a reasonable cost.
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