Which of the following person made attributions to evaluate the curvature under simplified assumptions?

The excessive deflections are likely to cause damage to ________

A tendon with a trapezoidal profile considering the bending moment and deflection at the centre of the beam is obtained …

The deformation of prestressed members change with time as a result of ______

The deflection of a beam with parabolic tendon is given as ______

Which of the following influence the deflections of prestressed concrete members?

The type of deflection of not supporting and non structural elements of flat roofs is?

The net curvature ϕtat a section at any given stage is given as ______