We are building a small playground for all ages. Is there any specific rules for concreting the 150mm round posts which will cary a chin and monkey bars so they do not start moving after multipal abuse. It is a lean to garage sturucture.
You could get away with 600m below ground but if you want to make it indestructible then put a third of the length is underground, so if the post is 2m above then put 1m below.
