Industrial complexes, bridges, and flyovers
We feel proud to introduce ourselves as the well-known service provider of Piles Services. The offered bored piles services are delivered to lay the foundations of industrial complexes, bridges, and flyovers. Our offered bored cast services are rendered by the most experienced professionals of the trade. The offered bored cast-in-situ piles services are very affordable and cost effective in rates.
CONSTRUCTION WORKIN CHENNAI
An angered pile’s capacity is strongly influenced by its construction. Augered cast-in-place piles are constructed using an electrically or’ hydraulically powered, continuous hollow-stem auger mounted on either a steel lattice or on pipe leads.
The power supply and the auger both play a significant role in a successful pile installation. The power supply should be rated at or above 27 (20,000 ft-lb), and the auger should have pitch equal to one-half its diameter, for drilling in either cohesionless or cohesive soils.
In cohesionless soils, the use of lower power torques and greater flight pitches may result in “weak drilling”
(1). In this practice, which is not evident to the average client
(2), the vertical speed of the auger
Since the auger’s vertical flight speed is greater than the rate of auger penetration, soil is transported to the ground surface, loosening the soil adjacent to the auger and possibly resulting in the auger partially filling with soil.
The diminished in situ stresses (soil loosening) will result in a diminished pile capacity; the partially filled auger will cause the grout to flow up and down the auger, possibly contaminating the pile.
The practice of “weak drilling” allows the contractor to employ less powerful, less expensive equipment; penetrate deeper depths; and have high production rates at the expense of pile capacity and quality control.
DESIGN PROVIDE BY BOOMI PILE FOUNDATION
During the past 20 years a number of different methods have been proposed to estimate the capacities of augered cast-in-place piles.
The methods vary, some consider augered piles driven piles, and others view them as drilled shafts. Lately, a number of design methods specific to augered piles have been proposed. What follows is a comparison of three commonly used methods as well as a drilled-shaft and a driven-pile approach for 21 Florida sites whose load tests were performed.
Seventeen of the cases were compression loadings and four were tension loadings. Since all the methods are empirical, the predicted capacities were compared to failure as defined by Davisson, 2 percent, and 5 percent pile-diameter settlements. A brief discussion of each method is given first, followed by a summary of the data base.
Advantages of Auger Cast Pile Foundation
- Finished foundations element resists compressive, uplift, and lateral loads.
- A cost-efficient auger cast pile foundation solution.
- Can be installed in most soil conditions such as sands, clays, silts, gravels and soft rock
- Can achieve pile depths in excess of 30m + and with various diameters of 300 mm to 1000mm+
- Low noise level and no vibration and low noise level so ideal in built-up areas with weak soil conditions and high levels of ground water.
- Compared to bored piles, construction is very quick as temporary casings or support systems are not required.
- Auger cast piles are a type of drilled foundation in which the pile is drilled to the final depth in one continuous process using a continuous flight auger.
Common uses of Auger Cast Pile Provide structural support
Provide earth retention, especially on site boundaries or close to adjacent buildings
Prevent landslides or protect existing buildings and are often combined with other techniques such as ground anchors or soil nails
Types of Auger Cast Pile
- Auger Cast Pile (ACP) „
- Continuous Flight Auger (CFA) Piles „
- Augered-Cast-in-Place (ACIP) „
- Auger Pressure Grout „
- Screw Piles „
- Drilled Displacement (DD) Piles
The continuous flight augur pile construction system eliminates the need to employ support fluid or casings in cohesive soils, non-cohesive or water bearing soils. The process can be used for environmentally sensitive sites and/or working near existing structures.
It is a type of drilled foundation in which the pile is drilled to its final depth in one continuous process using a continuous flight auger.
While the auger is drilled into the ground, the flights of the auger are filled with soil, which provides lateral support and maintains the stability of the hole.
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