mowgli789

Hi all, Firstly, I'm not a plumber, so work on the assumption I know nothing. We are building a 2 story extension on the back of our chalet bungalow. Currently the foul sewer runs along the back of the house from one side to another and then away to an inspection chamber on the edge of our property about 19m away. The fall between the first inspection chamber and the one on the edge of the boundary is about 30cm. So significantly less than 1:40. Any new foul sewer will need to go under / through the foundations of the new extension. The length would increase to about 23m. I think that would make the fall about 1:100. Given the lack of fall, and the foundation issue, would an external pumping station be necessary, of with the right diameter pipe do you think the current setup could work? I've attached a quick sketch to better show my issue. Any advice would be appreciated. Thanks Ben

Hi, I am have taken down an old stone retaining wall and am moving it to another part of the garden. I'm guessing it may well originally been pointed with hydrated lime as they cleaned up really easily. However, when I started looking around the internet for help with what type of mortar to use with stone ( I'm fairly sure these are Sussex sandstone) I came across a lot of different opinions on how it should be done, so I thought I'd come here for some advice. The wall will be about 3' high, maybe a little higher, but no higher than 3.5'. It will be laid next to a drive way which has a kerbstone already in place. My plan was to use the kerb as part of the footing then dig a trench behind it. My questions are as follows: Should I use mortar at all, or would a dry stone wall be better for drainage? If I use mortar, should I use lime given they are natural stone, or is cement ok? Should the footings behind the kerbstone be concrete? Some people were suggesting gravel might be better for a dry stone wall. Any help would be appreciated. Thanks