hi Alex, and welcome to the Forum. Like Rick, I tried to do your questionnaire, but found it didn't make sense. I wonder if you actually have any experience with keeping chickens? It does appear that you need to do more research into their lifestyle before attempting to design a feeder for them.
Like all birds, chickens need to eat small amounts more or less continuously throughout the day. They don't eat separate meals, like you might give to a dog or cat for instance. So your questions about how much do you feed your chickens, and how often, are not relevant. A chicken will eat between 110-150g of chicken pellets per day, depending on size and appetite, so you need to design a feeder which will hold and dispense at least 2-5 kilos of feed for them to eat as and when they want it, without spilling the feed all over the floor.
I also found your questions about storage a bit confusing. Chicken feed usually comes in 20-kilo sacks, which should then be decanted into a sturdy container, eg a dustbin with lid, where it can be stored dry and cool, and safe from rats and vermin, until it's used to fill the feeder. If your project is to design a feeder, storage of the bulk feed itself isn't very relevant.
The main problems with feeder design are blockages because the feed gets damp, goes mouldy and won't flow properly; feed being emptied out on to the ground when the hens scratch or flip it out with their beaks or feet; and instability because the feeder isn't firmly fixed or is inherently unbalanced, resulting in the feeder itself toppling over. Other problems include wild birds and vermin getting access to the feed, and rain making it cake up and become inedible - though these problems are partly due to whether the feeder is located in a dry roofed area, or in a run closed to wild birds and vermin.
I suggest you have a read through this section of the Forum, where you'll find some more threads about feeders and nutrition, to give you a bit more background for your project. E.G, this thread recently; http://poultrykeeperforum.com/viewtopic.php?f=124&t=10647
Also, browse the internet and look at ads for different types of feeder to give you more ideas.
Then, if you'd like to redesign your survey, we'll be happy to give it a go and tell you what we think.
