You may wish to consider arranging the ground so that the same ark can have access to two different areas, each with a concrete platform for feeding and a permanent water supply (we use Suevia drinkers). Also worth putting in a drinker that can be filled by a hand-carried bucket when the pipes freeze - we use bolted-on metal bowl drinkers, minus their float mechanism. Site them and the concrete pad for feeding where you can reach them from outside the run. Water pipes will need to be metal or feed in from something the pigs can't chew. Pigs will usually dung away from their sleeping quarters, but this can change due to very bad weather. We have all-concrete pens and muck out daily. The muck goes onto the general farm muckheap which is on a concrete base. There's no smell that we're aware of until it's spread and this disappears within a couple of days, faster if it rains.