What is the maximum length possible for precast concrete piles?
With the benefit of using pile joints, precast concrete piles can be driven to lengths longer than 30mx. Often concrete precast piles can be driven down to 30m, however, in special circumstances, such as offshore projects, piles can be driven down to a maximum of 150m.
What are precast concrete piles used for?
Prestressed concrete piles play a vital role in the building structures. The primary purpose is to carry the compression loads. These are being used in the foundation of buildings, bridges and marine structures.
How deep should a pile be?
All piles must be reinforced with a minimum of 1-15M bar full depth of the pile extending to the top bars of the grade beam. Piles must also be placed within 1.5m (5′) of a concrete foundation wall. This pile should be a minimum 4m (12′) deep when within 1m (3′) of a recent excavation.
How are precast piles installed?
Precast concrete piles are installed in the ground by using pile driving equipment. Due to the possibility of carrying vertical and horizontal loads as well as bending moments, precast piles are used for the foundation of all sorts of engineering structures under virtually every soil conditions.
How deep do concrete piles need to be?
That depends on the type of soil you have. Soils can vary, and piles should be installed to the load bearing strata of the soil. In some parts of the country, like New Orleans, this can be up to 100 feet. However in other parts of the country, such as Texas, it can be 7-10 feet.
How are pre cast piles installed?
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. Driven precast concrete piles are widely used because of their versatility and suitability for most ground conditions.
What is the diameter of pile?
Pile diameter: 600 to 3500 mm depending on soil diameter and consistency. Pile depth: 60 to 100 m depending on soil diameter and consistency.
What is safe pile capacity?
The pile capacity is defined as the load mobilized at the pile head displacement of 10%B. the cone resistance at pile toe is used in the formulas and no averaging procedure is done. From: Piezocone and Cone Penetration Test (CPTu and CPT) Applications in Foundation Engineering, 2020.
How are precast concrete piles made?
Where are precast piles used?
Precast concrete piles are used when soil conditions are not adequate for spread footings. The piles are used to support the rest of the bridge structure upon the soil. This system provides a driven pile instead of a cast-in-place concrete pile. Cast-in-place piles require more time and preparation.
Is precast concrete better than modular building?
Precast is perfect for buildings which are typical in layout and plan. If the loads coming onto the floor is non moving and lighter. Both are fast paced. Logistic is an issue. We also have issues fixing the Precast concrete panels. Modular is better if buildings are divided into various functional units.
What are the advantages and disadvantages of precast concrete?
Advantages of Precast Concrete Stairs: There are many advantages of precast concrete stairs: Saves Construction Time: Precast Concrete construction saves time, the risk of project delay is also less. The precast concrete casting can be carried on simultaneously with other works on site therefore saves time. Quality Assurance: The key factors
How do you make precast concrete?
– Office buildings – Multi-unit housing – Hospitals and medical centres – Schools – Retail shopping centres
How to measure for precast concrete steps?
– Measure the footprint of the steps with a tape measure and then transfer the measurements to the ground in front of the steps. – Excavate the area inside the string to the frost line. – Level the ground in the hole with a rake and tamp the ground with a tamper to create a solid surface.