Hi, hopefully someone on here can give me some advice.
We are extending our garden but the level drops by 3 foot, our plan is to use concrete posts (7.9 ft) with 3 ft of gravel boards and a 3 ft wooden fence panel. My concern is that whether the concrete posts will hold back 3 ft of dirt if they are concreted 1.9 ft in to the ground (leaving us 6 ft above ground). Im not even sure if using 3 x 1 foot high gravel boards is safe. The total length of this fence is around 18 metres so thats a lot of weight to hold back.