Hey, I've been looking into some civil/structural engineering for a school project, and came across bridge design. I've decided to try some integrating and optimising to do with an arch bridge (optimal cost/strength proportions). The math isn't too hard, but what I'm struggling with so far is finding any relationship between the curvature of the arch and the bridge's maximum load. I'm sure there must be one, there were some indicators of it in my research, but these were always very superficial. If anyone could point me in the right direction on this, I would be very grateful.