Hi there, I qualified as a bricklayer but haven't done it for years, a friend has just asked me if I could give him a time estimate for building a block wall, so my question is roughly how long should it take to build, per m2, a concrete block wall with pillars. foundations are in. the wall is 27m long, 2.2m high and doesn't have to look pretty,it will be rendered, i'll take into consideration that I'll be a bit slow. thanks for any help. 
