Hi friends! I need your help regarding construction of my boundary wall. I have a plot of 66*44 sq feet, in which there was a brick wall boundary made in 2010. but recently after the sand dust filling in this rainy season and after a continue rain of 48 hours, one side of boundary was fallen. As there is a pond nearby the plot and due to recent continue rain the water has flowed through a steep slope alongside the boundary and the wall has fallen down. now some said that it is due to the pressure crated by sand dust filling or some said it is due to water flow through the sharp slope. now I have two options:
1. to build a dry stone wall.
2. to build a wall with regular rcc concrete pillars.
I wanna know that which one of these will be more strong and cost effective in the steep slope land?