Poor site drainage can wreck #waffleslab houses. But that doesn't have to happen to you. Watch this video and learn why poor drainage affects waffle slab houses so badly and what you can do to protect your own home.

This video is for homeowners, builders, plumbers, site supervisors and landscape gardeners.

The reason you that should beware of waffle pod slabs is that the most important information about how to build waffle footing and slab systems well is not making it through to the people who most need to know. This is leaving homeowners and home builders at risk.

⏱️Timestamps:
0:00 Introduction
1:10 Waffle pod slabs and slab heave problems
02:51 Site drainage problems on new developments
06:59 Site drainage problems caused by field inlet pits
09:44 Site drainage problems caused by roof water entering trenches
12:57 Site drainage and plumbing trenches
14:42 Why setdown patio slabs contribute to slab heave problems
16:58 How water gets under your patio slab
19:25 Why clay plugs are a great idea and why to use them in plumbing trenches
23:22 What you homeowners need to do to not contribute to slab heave
23:43 Why trees are the natural-born enemy of houses and what to do
25:04 Why you should fix leaks around your home
27:30 The impact of Lawn and garden irrigation on slab heave in waffle slabs
30:04 Why lifting the building pad height at development stage is a good idea
32:46 Why roof plumber need to run separate landscaping pipes
34:31 How engineers can document hybrid footings at setdown areas to reduce slab heave
36:38 Why engineers need to remember that deeper waffle slabs are stiffer
38:18 Why a sticker in the meter box discloses the site reactivity is a great idea
40:40 Why waffle pod slab construction should have a system of checking and verification
44:21 Conclusion. Thank you for watching!

This video is for homeowners to bring this video to the attention of their developers, builders, certifiers, plumbers, landscape gardeners, inspectors, and engineers. They each play a part in providing the framework for a performing footing and slab system.
The biggest challenge our project home construction industry is facing is getting drainage right so that waffle pod slabs can perform within expectations.
In our video, we talk about the challenges - super-flat blocks, plumbing trenches that are not free-draining, small allotments, yard drainage, field inlet pits, porous fill, and backfill.
Then we take those drainage challenges and provide some very clever ways to solve the issues.
Our solutions include clay plugs in drainage trenches, improving drainage on subdivision development sites, grading the base of trenches, separating downpipes and landscaping pipes, and stickers in power meters that tell homeowners and future homeowners about the risks of planting large trees and overwatering lawns.
Then we back it up with recommendations on how to ensure this work is getting done correctly.
This video is vital if you are building your home or you are a project home builder that builds homes for a living.
Show this video to your homeowners, your neighbours, your developers, your competitors, your builders, your plumbers, your inspectors, and your engineers.
Because while homeowners play a part too, the contribution of the homeowner is a lot less than some would suggest. So I’m also providing this information for homeowners so that they can limit their exposure and reduce the risk of being blamed for contributing to slab heave.
Don't forget that much of the requirements for good #drainage, clay plugs, and plumbing trenches have been on engineer’s drawings for a long time. Some of it comes from the 2011 version of the Australian standard for residential footings and slabs which is nearly ten years old.
So if your older home has some issues you might struggle to solve these issues alone, but you might also get some ideas on how to fix your drainage issues.
It is time these issues gain the recognition they deserve.
So I'm calling on #Metricon. GJ Gardner, #SimondsGroup, Burbank Group, #HenlyProperties, #PorterDavis, #CarlisleHomes, #CoralHomes to watch this video, get their plumbers to watch their videos, get their supervisors to watch this video, and get this video to their developers. Let's improve residential construction together and make Australia a better nation to build in.
https://cornellengineers.com.au/bewar...

Reference material:
AS2870 Australian standard for residential footings and slabs and Commentary to AS2870-2011.
CSIRO BTF 18 Foundation maintenance and footing performance: A home owner's guide.
C&CAA T49-2003 Guide to residential floors
QBCC Defective residential construction work causing subsidence - Contractor's responsibilities.