Problem:
What should be considered in terms of actions in rivers? Select the correct answer Do not vary the longitudinal slope of the rivers and propose wide sections with several levels to adapt well to the natural operating conditions of the river. Do not vary the longitudinal slope of the river, but improve its hydraulic behavior by installing sills or slabs that favor the drainage of large flows. Carry out dredging before starting actions to eliminate sludge and unsuitable materials that may call into question the integrity of the foundations. Use concrete sections as they are the most flexible and adapt perfectly to the vast majority of cases.