Hi All,
 
	 
 
	Confused here, if on my driveway, the pipe is less than 600mm deep, Im thinking I need to protect? BC being less than helpful...
 
	 
 
	So shingle, then do I need a compression board all along where its shallow? I have some A252 mesh left over so could use that?
 
	 
 
	Then finally 100mm concrete cap? Again, is this all along the trench? 
 
	 
 
	Look forward to thoughts!