I have been asked to come up with load ratings for some existing storage racks we have in the plant. Since the racks are made of existing scrap structural material I thought this would be a good chance for me to learn how to use weldments. For some reason I am having trouble getting the sheetmetal shelves to bond to the weldment frame. I have the global contacts set to touching surfaces bonded but the sheets seem to not be attached. What am I missing?

With the weldments- In crating a 3D sketch for the frame I would like to be able to place the horizontal angles inside the uprights. Do I need to create additional lines in the sketch to place them inside? If so how do you get the sketch to update properly if you change the size of the angle iron? does that have to be manually done?

Thank you for your assistance.