Before revision: Background Arching action forces in beam and slab bridge deck The strength enhancing effects of arching action in reinforced concrete floors were first recognised near the beginning of this century.Westergaard, H.M. and Slater, W.A., ' Moments and stresses in slabs', Proceedings of the American Concrete Institute, 1921, Vol.
After revision: Background Arching action forces in beam and slab bridge deck The strength enhancing effects of arching action in reinforced concrete floors were first recognised near the beginning of last century.Westergaard, H.M. and Slater, W.A., ' Moments and stresses in slabs', Proceedings of the American Concrete Institute, 1921, Vol.