The rise of an inverted arch in the inverted arch footing is about ______ times the span.a)2/3 to 1/2b)1/2 to 1/3c)1/3 to 1/5d)1/5 to 1/10Correct answer is option 'C'. Can you explain
Pre-stressing the Foundation - Gateway Arch National Park (U.S. National Park Service)
Song of the red rock arches- All Images | NSF - National Science Foundation