After several years of discussion and amendments to the Guidelines.
And with a considerable amount of input from engineers throughout Australia, AS 2870 was eventually issued in 1986.
The current version is AS 2870 – 2011. AS 2870 provides tables of “deemed-to-comply” footing sizes that can be used without a need to carry out structural calculations.
Alternatively, a residential raft footing can be designed by calculation, provided the designer uses either the Walsh Method or the Mitchell Method.
AS 2870 recommends several of the key design parameters for both of these design methods.
TMK has chosen to use the Walsh Method in conjunction with its own Residential Footing Design Policy for all residential footing designs produced in its office.
“The Walsh method of beam-on-mound design from inception to current…”