How do you measure the width, length, height for a coop? How do you know how much wood to buy, how long the wood should be etc? I am really confused about this. I am planning on keeping the chickens in our barn but I want them to stay in one part and not all over the barn and I want them to be extra safe in case a racoon where to get in the barn(which they will not hurt my chickens!!!!I would be so upset!!!). So I am going to build something like this...... http://i277.photobucket.com/albums/kk53/balloonlagoon/ChickenCoop.jpg Only not there actual chicken coop. Just the run part(made out of 2x4 and hardware)!!!! And put it in my barn and use washers and screws to hold the hardware cloth on. What do you think? How would I measure it?