Patio over pipes

[mickallen]

I am building a patio at the back of my house, I have to raise it about 12" at one side where the waste water pipe runs down the side of the house at a depth of about 3". can I just cover this pipe with hardcore/grit sand/slabs or do I have to encase it in concrete, or any other suggestions would be appreciated.

Thanks

[seanandruby]

assuming it is 40ml waste? id just bring it in with your sub base and, or bedding. just go careful with the wacker.

[matt h]

just watch the height against the dpc of the building.. finished level 150mm below dpc or you'll get rising damp

[mickallen]

Thanks for your replies

Sean, Sorry I am new to all this building speak what do you mean by 40 ml waste? I have attached a photo to help me explain.

[andpartington]

you will be ok just covering the pipe with the sub base (mot) go easy with the wacker
you will then be able to insert a lent of pipe and elbow to raise the gully to the finished hight.

sean was referring to the black sink waste which is 40mm die hence 40mm waste


where is you dpc because as said you need to be 150 below ???

andy

[mickallen]

Thanks Andy,

The DPC is about a foot higher than the top of the photo, so will be alright with that