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 centuryWestergaard , 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 this century.Westergaard , H.M. and Slater, W.A., ' Moments and stresses in slabs', Proceedings of the American Concrete Institute, 1921, Vol.