If you have a specific question, I should be able to answer your question.  Based on ST suggestion, I eliminated the metal mending plates and just bolt the two 2 x 2 together.  Originally, I used small dead trees, primarily spruce and balsam for the poles.  I switched to 2 x 2 because some camp sites do not have suitable dead trees to make poles.  If a  person did a lot of travelling, the set up could be made smaller.  The one in the picture is 10 feet long.  If you use 2 x 2 you should have a mending plate to keep the 2 x 2 from bending towards each other.  What you see in the photos is about the 10th prototype.  You can use ropes if you don't want to use straps.  The four straps used to hold the 2 x 2 should be adjustable so you can level the kitchen set up.