Dave W wrote:
On Sat, 13 Apr 2013 18:58:56 +0100, Rick Hughes
wrote:

On 13/04/2013 14:59, unknown wrote:
Previously I've just used a spade to dig-out holes for concrete
spurs but I'm tempted by either an auger or a "post hole digger"
... which works best?
These are available from several places; the SF ones get good
reviews but look a bit expensive compared to the others ... is the
extra cost justified?

Supplementary: how much postcrete am I likely to need when setting a
75x75 spur into a 600x150'ish round hole? (I know I could do some
sums but in this case I think benefitting from experience is going
to give a better estimate)


pi x r2 x depth = volume required

Should you even be thinking of concrete in the first place? My
neighbour's fence has keeled over because two of the fence posts have
rotted in the concrete. According to several web sources this is not
uncommon, owing to water seeping down and staying there to rot the
wood.

That will not happen to the OPs concrete spurs will it:-)?

--
Adam