Effect of Forces on Gantry Cross-Sections?

[JAZZCNC]

Thanks Jazz and apologies for doubting your interpretation Adil. Afraid I still have nagging doubts though about the vertical strength of those sections lying flat like that, and reckon there must be extra sag in the middle when compared to the GREEN design.

Obviously there will be some tiny tiny difference but when you have some profile in your hands you'll realise why it's not a problem.!! . . . . The difference you would struggle to measure with a dial gauge and I'm 99.9% sure you have far more pressing problems ahead to overcome than if the profile sag's 0.001mm more than 45x45.??
The extra lateral strength and rigidity the extra bolting into gantry sides allows will far far outway the very very minute difference any sag will make.