FUNCTION OF A PILE FOUNDATION The primary function of a pile foundation is to transfer load to a deeper soil or rock strata. There can be various reason that can force designers to transfer loads to deeper soil or rock strata. For example The soil at shallow depth is weak, i.e., not able to withstand … Read more
PRACTICAL PROBLEMS TO KEEP IN MIND BEFORE FOUNDATION DESIGN There are, in foundation design, a number of practical construction problems and costs to be considered. The chief ones are: The foundations should be kept as shallow as possible, commensurate with climatic effects on, and strength of, the surface soil; particularly in waterlogged ground. Excavation in … Read more
Durability of Concrete Piles Properly mixed concrete compacted to a dense impermeable mass is one of the most permanent of all constructional material and give little cause of concern about its long-term durability in a non aggressive environment. However, concrete can be attacked by sulphate and sulfuric acid occurring naturally in soils, by corrosive chemicals … Read more
How to Select Proper Pile Type? The purpose of a pile foundation is to transfer and distribute load through a material or stratum with inadequate bearing, sliding or uplift capacity to a firmer stratum that is capable of supporting the load without detrimental displacement. A wide range of pile types is available for applications with … Read more
Tremie Concreting – On Site Precautions During tremie concreting the following precautions are to be taken while doing the work: The concrete should be coherent, rich in cement (not less than 370 kg/m3) and of slump between 150 and 180 mm. When concreting is carried out under water, a temporary casing should be installed to … Read more
Root Pile Construction Root piles are very small diameter piles (generally 60 mm to 135 mm). Length of the root piles generally vary within 4 m to 30 m. The concept of root pile was first introduced by an Italian engineer named F. Lizzi. His primary concern behind root pile development was to do underpinning … Read more
Piled Raft Foundation Between the geotechnical design parameters of bearing capacity and settlement, which are independent, if the design just satisfies bearing capacity, settlement will be over satisfied (i.e. settlement less than permissible), and vice versa, if the design satisfies settlement, bearing capacity will be over satisfied (i.e. factor of safety against bearing capacity failure … Read more
A pile is a slender, structural member installed in the ground to transfer the structural loads to soils at some significant depth below the base of the structure. Structural loads include axial loads, lateral loads, and moments. Another term commonly used in practice for pile foundations is deep foundations. Structures that cannot be supported economically … Read more
Piles are structural members that are made of steel, concrete, or timber. They are used to build pile foundations, which are deep and which cost more than shallow foundations. Despite the cost, the use of piles often is necessary to ensure structural safety. The following list identifies some of the conditions that require pile foundations: … Read more
Design Considerations for Pile Foundation The pile foundation analysis is based upon several simplifying assumptions which affect the accuracy of the results. The computed results must always be reviewed with engineering judgement by the design engineer to assure that the values are reasonable. Also, the analysis results should be compared with load test results. The … Read more