NEW FORMULA FOR THE AXIAL LINE OF THE TRANSFORMED CATENARY ARCH (Report 1)

Transformed Catenary is generally considered as the most rational axial line for the reinforced concrete arch. One can not miss the wellknown Strassner's formula which assumes a horizontal top surface of reduced load on the arch. But even if the road surface be actually horizontal, the load reduced, to concrete can not have a horizontal top surface. In most cases, the reduced load surface takes the form of a curved surface convex to heaven.Consequently, there must be a more rational formula for the axial line of the transformed catenary arch. The writer has long been studying this problem and now he is glad to offer a new formula in the following papers.