Shear strength is the ability of soil to withstand forces that may cause it to fail during sliding or shearing is known as shear strength. It is a measure of the soil’s resistance to these pressures. The balance between the applied shear force and the resistance offered by cohesion and friction determines the shear strength of the soil. The soil will fail and experience sliding or shearing…
The liquid limit test of soil is a laboratory test used to measure the liquid limit of soil and its consistency when it is wet. This test is a part of atterberg limits test with plastic limit test as the other part.
Liquid limit is defined as the water content at which a…
High strain dynamic testing is a method of testing deep foundations to obtain information about their capacity and integrity, and in some cases, to monitor their installation. It is codified by ASTM D4945-12 – Standard Test Method for High-Strain Dynamic Testing of…
Pile Design and Construction Practice Book PDF by Michael Tomlinson & John Woodward
December 4, 2017
Piling rigs are a common place feature on building sites in cities and towns today. The continuous introduction of new, more powerful, and self-erecting machines for installing piled foundations has transformed the economics of this form of construction in ground conditions where, in the past, first consideration would have been given to conventional spread or raft foundations, with piling being…
We have already defined the pile foundation, its type and importance in case of low bearing ground conditions. But this post will mainly deal about the procedures and steps that are undertaken for the construction of pile foundation. Pile foundation construction procedure is…
Deep foundation especially pile foundation is best suited and mostly used for a low bearing and bad textured soil or for the heavy load structures. Bearing capacity is the deciding factor for the geotechnical design of foundation. Bearing capacity of soil is defined as load…
Cast In Situ is a term meaning a construction item or structural member like a beam or in this case a Pile that is to be constructed, assembled or poured at site rather than prefabrication in a factory. Generally in cast in place or cast in situ construction concrete is transported from a batch plant to site where it is poured and compacted into the formwork which is fixed in desired shape and…
A resilient and robust foundation is a sure way to guarantee a stable structure that could withstand and tolerate the forces of nature by satisfying the strength and serviceability requirements. Primarily the significance of foundation in a structure is same as the…
Tunnels and their stability mechanisms
Introduction
Tunnels can be defined as underground construction for the connection between two destinations to build up an effective means of transportation. Tunnels are made for various purposes such as Railway transportation, for…
If you have ever stood on the side of a hill and looked at houses built on the same lot, you would notice that one home might be significantly smaller than the other home just because of the way the foundation was built. There are ways to build houses on sloping lots to ensure that everyone gets an equal amount of land in their property.
Have you ever considered purchasing a house on a slope?
What are fender Piles? - Its Types, application and uses in construction
February 11, 2017
Ever wondered what fender piles are and why they’re used in construction? Fender piles are large vertical members driven into the ground next to the ship and they protect the dock or ship’s wharf from the vessel’s collision. Pre-stressed concrete Fender Piles…
The bearing capacity of the soil and the loading conditions sometimes not allow the usage of shallow foundation and thus the designer opts for deep foundations like that of pile foundation. The rebar of pile foundation whether cast-in situ and driven piles rebar fixing and…
Many times during soil exploration, geotech engineers have to face soils that are very likely to undergo volumetric changes due to moisture variation underneath the ground surface. This expansion and shrinkage can cause distress which is very dangerous and critical as far as bearing of the foundation is concerned.
This is the case for all sorts of soils having 2.5 m or more depth of famous black…
Yesterday I was watching documentary on a Bridge having piers founded in the water and was wondering how engineers and constructors are able to lay pile foundation in such a high-speed flowing water of river.
After research of few hours I have got a handful of knowledge…
You might have heard a structure called Cofferdam, it is a structure built to divert water either of river or groundwater so as to make a dry, safe and sound environment for the construction activity to carry out. This cofferdam can be a typical retaining wall type or it can…
It is extremely difficult and impractical to prevent liquefaction of soil in the field when the susceptible zone extends to a large depth. It is generally best not to construct buildings and other structures at sites prone to liquefaction. Because the remediation of the liquefaction hazard is quite expensive, it would be cost effective only at the sites where the land cost is extremely…
