"I'm aware of the technique, but it's painfully slow, you need a rather big area to supply a person with water for a day. And I'm not sure, but it seams like the fort would need alot of defenders, hence using all cultivatable ground you can get."

"Does it also remove microbes and parasites? Is it handdriven? Does the person in question posses one of those?"

"The zombies will have your toast while you're out trying to find enough supplies to build that behemoth. Don't get me wrong, its an impressive behemoth, but a behemoth nonetheless. Even if you have the intended 64 people on hand, your behemoth will take years to do the building, let alone finding all the concrete, pipes, etc. needed to complete construction. So what do you plan to do in the mean time? Turn the bulldozers on "quiet mode" so not to attract the hordes of flesh-eating monsters you undoubtedly dragged behind you when searching for a good concrete mixer?
Unless, of course, you built the behemoth before the infestation- in which case I can assume two things about you:
1. You're scary paranoid
2. You won the lottery three times

But if you do manage to construct this behemoth, then hats off to you, because you have my toast granted that you can keep 64 people content enough to keep from committing mutiny."

"Sounds nice. So far, I like. But then there's the question of ammo. If the undead are piling up outside and you're already low on ammo, how will you leave to find more, unless you make your own bullets, which is better, but where do you get THAT stuff once it runs low? And even so, what happens when the zeds outnumber your bullets and you don't have time to make more?
(This is assuming that you somehow got a hold of guns in the UK, unless the plan is otherwise. if so, do tell!)"

"The zombies will have your toast while you're out trying to find enough supplies to build that behemoth. Don't get me wrong, its an impressive behemoth, but a behemoth nonetheless. Even if you have the intended 64 people on hand, your behemoth will take years to do the building, let alone finding all the concrete, pipes, etc. needed to complete construction. So what do you plan to do in the mean time? Turn the bulldozers on "quiet mode" so not to attract the hordes of flesh-eating monsters you undoubtedly dragged behind you when searching for a good concrete mixer?
Unless, of course, you built the behemoth before the infestation- in which case I can assume two things about you:
1. You're scary paranoid
2. You won the lottery three times

But if you do manage to construct this behemoth, then hats off to you, because you have my toast granted that you can keep 64 people content enough to keep from committing mutiny."

"I know this plan isn´t perfect, and yes it will take years to complete the whole base, but you work your way there, section by section and while building you will kill any zombies that approaches of course. Now if you were to run into a horde with 500 zombies or more, which many might do, you will try to fight them off as good as you can and if you fail you always have your escape plan. Now imagine 1000 different people do this in 1000 different locations. I think that many of them will fail building this base, but I doubt that all of them fail with building the base... unless they all choose a stupid location like next to a big city where there will be hordes of 10 000 zombies wandering around. if just one of these people are able to finish the base we will still have a base and human kind will have an increased chance of survival. Since the base should have radio communication (and Internet if it´s still working) telling people to gather supplies and head towards the base."

"you have to worry about what the zombies will bring with them. If carrion birds like crows follow them, then there go the crops."