Awesome! Just checked the Glider Criteria and wow it gives a complete in depth explanation of everything we need to do to successfully load test the ribs, thank you for that informative resource. We did not faithfully follow basically any design to be honest, our plane is Frankenstein's monster in terms of bits of other planes. For example, much of the tubing was inaccurate to what we needed as it was steel with the purpose of welding, however ours is aluminum and a gusseted plane. However as you said it will be very worth it to do all the calculations before prototyping or constructing anything, so we’re currently in a physics phase. Now that you mention it, it would be informative to analyze the parent designs and compare it to the numbers we get after all our changes, just for confirmation that we didn’t sabotage our plane while making a multitude of revisions. We’re still pretty new to physics, so if you have any helpful loading resources we’d love to check them out as well! Thanks!Glider Criteria has scheme for load testing ribs....but that alone will not ensure the safety of the wing. To make prototypes of the, tail feathers, wing, landing gear, fuselage etc means essentially just building it and then load testing it, which if you have not calculations could be a frustrating experience. If you have faithfully copied elements of another aircraft as regard to tube size, gusset size, number of rivets, spar cap and depth, wing attach fittings landing gear attach and fittings you might be successful.......you will still have to understand loading of the structure....how much sand where...just to load test it.....As to aerodynamics and tail blocking....that is another can of worms, and again if you have faithfully copied the platform of a successful aircraft and your weight and balance, rigging and power is correct I would think it would fly as well as that other aircraft.