From: rcres@XXnewsguy.com   
      
   2" coming off the downspouts and 1" off the atriums. All can be joined into   
   one 2" trunk line to the end of your 70' run. You can run a larger diameter   
   pipe but the downsides are, the water flows slower leading to a higher   
   chance of dirt/debris clogging it, bigger is more expensive, and of course   
   critters just love making nests in those pipe tunnels.   
      
   It's also a good idea to have a couple of Y clean-outs so that you can use a   
   hose to blast some water though the pipes to keep them cleaned out once a   
   year or so.   
      
      
    wrote in message   
   news:d4b78acc-7a74-443a-87aa-720c0db81916@googlegroups.com...   
   >A 2 inch pipe for each? Is that what you mean?   
   >   
   >   
   > On Wednesday, October 21, 2015 at 9:52:52 AM UTC-5, Rich. wrote:   
   >>  wrote in message   
   >> news:0ced4da4-6539-42f5-b122-331d998c9a34@googlegroups.com...   
   >> >I am running my downspouts to buried pipe to be piped away from my   
   >> >house.   
   >> >The side I am working on has two downspouts. I am also adding about 5   
   >> > >small atrium drains. The underground pipe that will lead to daylight   
   >> > >will   
   >> >be about 70 feet long. (This is not a straight run, there are curves as   
   >> >I   
   >> >am going >parallel to the front of my house, turning, then going   
   >> >parallel   
   >> >to the side of my house.)   
   >> >   
   >> >In that 70 feet, there will be approximately 17 inches of drop.   
   >> >   
   >> >What size/how many underground pipes would you recommend?   
   >>   
   >> Bigger is not better in these cases, a 2" pipe will be more than   
   >> sufficient.   
   >   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)