In addition, time take for completing a single pile is also lesser. There are no major issues like corrosion of steel in precast pile construction.įurther, it is easy to construct than other type of pile foundations. Galvanizing the reinforcement is suggested if possible in bearing the cost.Further, prestressing reduce the cracking of the concrete.The minimum cover could be maintained as 50mm as a durability requirements.Use of sound and hard aggregates, proper mix design, proper placing, compacting of concrete, proper curing of concrete, etc improve the durability of concrete.As a result, durability issues could reduce the lifetime of the piles.However, the composition of concrete, porosity of the aggregates, cover to the reinforcements, etc.Therefore, these piles are more durable.Piles constructed with adequate cover and grade of concrete are not subjected to deteriorations.These piles can carry high bending and axial stress.The following key points are highlighted in relation to the precast piles. Mainly there are two types of precast piles. The most widely used type of driven piles in the construction. Since these piles are from abundant materials, the cost will be less.įurther, it could be considered as green construction as we reuse the materials. Three rails are welded at the top or bottom.īutt- welding is used to join two sections to increase the length of the pile. The inner core can be filled with concrete to improve the lateral stiffness, bending stiffness, torsional stiffness, etc.Ĭast iron screw shape piles are driven by rotary drilling and are not that popular type of piles used in the construction.ĭepending on the nature of the soil, and as per the purpose of using different diameters could be used in the construction. However, on special occasions, H piles can be used.įour steel sheets welded together to create box shape pile or sheet piles welded together to create a hollow box section can be used in the construction. These types of piling construction are not widely used in the construction. They are welded together to increase the length. Hot rolled sections are used in the construction. Pile design can be done as guided in the article pile foundations design, construction and testing guide. If required, a reinforcement cage can be inserted into the pile to increase the pile load-carrying capacity. Further, depending on the applied loads, pile diameter can be increased based on the applied load. Micro piles are steel casinos filled with concrete. Let’s discuss available types of steel piles. Therefore, the presence of oxygen for corrosion is minimal. However, they are placed below the ground level. The main issue with the steel driven piles is the corrosion. Since the steel is readily available, construction can be done quite easily.įurther, steel piles such as micro piles can be used to support heavy loads applied from bridges and other types can be used to support medium level loads. There are different types of driven piles constructed from the steel. Let’s discuss above each of the driven piles separately. Mainly there are four categories which as based on the nature of the material. Since the cost of construction is less when compared with the cast in situ bored piles, these types of piling work are more popular in bridge construction. The driven pile is a type of pile that inserted up to the hard layer in the soil where it can provide the required end bearing and skin friction. When the topsoil is not in good condition and when it does not have the adequate bearing capacity to resist the load from the superstructure, a driven pile is used. Driven pile foundations are used in low rise buildings and bridge constructions mainly.
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