A retaining wall is a structure designed and constructed to resist the lateral pressure of soil, when there is a desired change in ground elevation that exceeds the angle of repose of the soil.
Construction of Concrete Retaining wall:-Following are steps in Construction of RCC retaining wall..
- Excavation:-First Excavation of Wall base is done & it is well compacted via mechanical means and with sprinkling of adequate water.
- PCC:- Plain Cement Concrete of Grade M-10 to M-15 is laid over compacted earth. This PCC acts as a base for the retaining wall
- Reinforcement: & Shuttering- Reinforcement is tied as per drawings and specifications and shuttering is paced for concreting as per required shape of the wall.Before erection of shuttering they are properly oiled for smooth surface.
- Concrete:- After Completion of Shuttering Concreting is done.Before concreting the joint of PCC and RCC are properly hacked, cleaned and treated with joining chemical.Concrete is then poured into shuttering with proper vibration. Normally M-25 or higher grade of concrete is used for Construction of retaining walls.During Concreting construction and expansion joints are provided for avoiding cracks in Construction Joints. Then the concrete is properly cured.
- Backfilling:- The final activity in construction of a retaining wall is backfilling of the wall. During backfilling it is to be ensured that there is no void in any layer of filling. Compaction checks in every layer of filling is to be checked.
