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Selecting the size

The depth of the stump pad footing must be selected from AS 2870-1996 'Residential slabs and footings - construction'. The distance between each stump pad footing must also be considered.

Site Class Depth of pad footing (Ds) mm
A 400
S 400
M 500
H 1,000
Table 1: Footing depths

To select the appropriate size you can use the Australian Standard AS 1684 'Residential timber framed construction' or AS 2870-1996 'Residential slabs and footings - construction'.

Diagram which displays depths for pad footings. A stump supporting a load bearing wall and a stump which supports a floor load only both have a 150 minimum depth of concrete pad. The diameter of the concrete pad in both cases is 300 mm. The depth of the pad footing is selected according to the site class.