Concrete piles

What are advantages and disadvantage of in concrete piles? What do you mean by concrete piles? Why is using concrete pile? Which cement is best for concrete slab construction?

In this case, the mandrel is placed inside the casing.

After reaching desired depth, the mandrel is withdrawn, and the casing is filled with concrete. In the case of the uncased piles , the casing will be gradually withdrawn. Pile foundations can use large numbers of concrete piles during their construction, with the piles connecting to the footers of the foundation. The piles distribute the weight of the finished structure safely, reducing the risk of structural failure or collapse. The precast concrete piles are cast and cured in a casting yard and then transported to the site for driving.

In case space is available, pile can also be cast and cured near the site of works. Driven precast concrete piles are constructed by hammering the piles into the soil to a depth greater than 40m by an adjustable hydraulic or diesel hammer.

Based on how they transfer the load into the subsoil, piles can be categorized as friction piles , and end-bearing piles. Cast-in-place concrete piles eliminate the need for pile driving machinery which can cause dangerous vibrations and precipitate landslides and which is sometimes too costly for use on small jobs. The first method of cast-in-place piles is with steel cores.

The method was developed by the Washington State Highway. Steel H-piles can also be driven into the ground. These can take very heavy loads, and save time during construction, as the pile casting process is eliminated. Mixing is carried out in mechanical mixer only.

If the alignment appears to be normal, the combined tension and bending may be too high. Driven piles are constructed of woo reinforced concrete , or steel. Wooden piles are made from the trunks of tall trees. Steel piles are either pipe piles or some sort of beam section (like an H-pile).

It consists of heavy-duty concrete columns pushed deep into the soil to provide support for the foundation. The top portion consists of durable concrete caps followed by a concrete cylinder that sits between the column and foundation. The piles main focus is to distribute the weight of the finished structure. The adverse environment introduced by seawater, high humidity, high temperature and dry-wet cycles causes rapid deterioration of these structures.

The most severe conditions are found in the splash zone area, which encompasses the portion.

The outstanding performance and durability of prestressed concrete Piling is well documented in the construction industry. With excellent resistance to bearing and bending loads, exceptional durability, and lower initial cost and long-term maintenance, prestressed concrete Piles will continue to be the first choice in deep foundation materials. PILE SELECTION Pile capacities Piles driven into the weathered gran-ite with the proper size hammer will develop the maximum pile capacity available. Normally pile capacities ranging from to 2tons are speci-fied for driven prestressed concrete piles used in building foundations.

Better quality control can be implemented as compared to bored cast in situ piles. These piles can be constructed in various cross-sectional shapes such as circular, octagonal or square. It can hold heavier loads, and it will never rot. Prefabricated concrete adds some more specific advantages.

The quality of the concrete can be checked before the pile is driven, reducing potential expenses. These piles are stable in softer soils and clays and are unaffected by groundwater. Concrete has many advantages over wood. Prestressed concrete piling are vital elements in the foundations of buildings, bridges and marine structures throughout the world. Subtotal Number of Piles Length of Piles Total lf to Drive Site Prep ls 500.

They vary in size from in. Minimum job charge for Driving ls — — — 000.