Footings for small wall

[garrymum]

Hi

I want to build a wall, approx 6 feet in length and only 2 or 3 courses high (coping stone on top). The wall will be built where currently soil is. Was thinking of digging down until firm ground was found, then just adding a mortar base for the footing, probably around 6 inches deep. This will be ok for such a small wall won't it? Or, do I need to add some balast to the mix for the footing?

 

[^woody^]

You may as well just lay your first course directly on the firm ground, and don't bother with 150mm of foundation.

Lay this first course as headers - ie sideways across the trench, and then lay the next course along the centre of these, bonding them so no straight joints