Search in book...
Toggle Font Controls
Create new playlist

Name your new playlist

Playlist description (optional)
Sign In

Email address

Password

Forgot Password?

or

Continue with Facebook

Continue with Google
Sign Up

Full Name

Email address

Confirm Email Address

Password

or

Continue with Facebook

Continue with Google

Pile Foundations, Substructures and Basements: Chapter 3 AT A GLANCE

What?

Pile foundations are columns that are driven or cast into the ground to provide a supporting framework for the building to rest on. Steel and concrete columns, known as pile foundations, can be inserted (driven) or bored into the ground, transferring the building loads to loadbearing strata. Hardwood timber may also be used or piles, especially for temporary low‐rise buildings. ‘Substructures’ is a term used to describe a variety of work that takes place below ground level to form supporting structures and basements.

Why?

It is common for framed buildings to bear onto piled foundations, especially when the loadbearing strata is a considerable depth below the surface of the ground. Substructures and basements provide additional space within the building footprint. In situations where it is not possible to build high, for example in semi‐urban or rural areas, it may be possible to provide additional space under the building, subject to ground conditions and town planning restrictions.

When?

The piles are placed or driven into the ground early in the construction process. This ensures any local ground disturbance caused by the piling does not affect other works, for example site drainage. On sites that have previously had buildings on them, it is common practice to identify and remove existing foundations or to avoid them when placing the piles. Substructure works and the construction of basements are usually one of the first tasks to undertake to ensure a logical flow of work on the site. Adding a basement to an existing building is likely to have an impact on adjacent buildings and foundations.

How?

There are a variety of piling techniques available, the choice of one over another largely dictated by ground conditions, the building design and appropriate physical access for machinery to conduct the piling. Basements tend to be constructed of reinforced concrete or dense concrete blocks, which is then tanked to prevent water and damp from entering the building.

..................Content has been hidden....................

You can't read the all page of ebook, please click here login for view all page.

Table of Contents for Chapter 3 AT A GLANCE

Create new playlist

Sign In

Sign Up

Table of Contents for
Chapter 3 AT A GLANCE