Why are pipes inserted into the mountains to avoid landslides?

Water in a slope has the potential to greatly reduce friction between layers of rock or soil. Many landslides have been cause by water entering a specific layer, e.g. made of clay, between two other rock layers. This saturated layer then acted as a gliding surface: Source. read more

Destabilising the toe of a slope is one of the most common causes for landslides. If you want to try this out, got to a children’s playground, enter the sand box, create a giant heap of sand and then start to remove material from the bottom of the slope. read more

I find the easiest way to clean pipe and I use this method working as a Pipefitter everything I work on copper tube. First I would buy some decent working gloves and some wire wool. It is literally as simple as wearing the gloves and scraping wire wool along the pipe to bring the tube back to it's bright colour. read more