Shopping Cart -

Your cart is currently empty.
Upgrade to today
for only an extra Cxx.xx

You get:

plus This issue of xxxxxxxxxxx.
plus Instant access to the latest issue of 350+ of our top selling titles.
plus Unlimited access to 30000+ back issues
plus No contract or commitment. If you decide that PocketmagsPlus is not for you, you can cancel your monthly subscription online at any time. Auto-renews at $13.99 per month, unless cancelled.
Upgrade for $1.39
Then just $13.99 / month. Cancel anytime.
Learn more
Pocketmags Digital Magazines
Pocketmags Digital Magazines
   You are currently viewing the Canada version of the site.
Would you like to switch to your local site?
Read anywhere Read anywhere
Ways to pay Pocketmags Payment Types
Trusted site
At Pocketmags you get
Secure Billing
Great Offers
Web & App Reader
Gifting Options
Loyalty Points

Foundation solutions for home extensions

Get your extension project off on the right footing with Tim Doherty’s in-depth guide
This extension project features deep basement foundations

So you’ve got a great design in the bag and you’re keen to crack on with your extension. First things first: you need to decide how to build it, and that process starts with the foundations. Specifically, you need to understand what supports the existing house. This will have a major impact on the design of the new footings. Combine this with knowledge of soil conditions, trees, service/drain locations and more, and your team can plan the best solution for your project.

Typical existing foundations

The long hot summer of 1976 heralded a turning point in foundation design. Following a significant flurry of claims for subsidence, insurance companies insisted they were cast deeper to help stabilise new and replacement dwellings. Before that, houses built in the 1930s to 1970s may have had foundations little more than 600- 800mm in depth and the Victorian / Edwardian periods frequently only went to depths of just 450-500mm.

Purchase options below
Find the complete article and many more in this issue of Build It - July 2019
If you own the issue, Login to read the full article now.
Single Digital Issue
July 2019
This issue and other back issues are not included in a new Build It subscription. Subscriptions include the latest regular issue and new issues released during your subscription.
Annual Digital Subscription
Only $ 3.00 per issue

View Issues

About Build It

Plan, design and build your dream home with practical advice and inspiration from Build It magazine. Highlights in this month's issue include: - Design Secrets to Win Over the Planners - Home Extension Costs - How to Find a Project with Renovation Potential - Building Contracts: Why You Need One - Buyer's Guide to Sliding Doors - Outdoor Living Ideas - Build It magazine's own Real Life Self Build ... and more!