Retaining walls are essential structures in civil engineering, used to hold back soil or rock from a building, structure, or area. Designing the reinforced cement concrete (RCC) panels for such walls requires careful consideration of soil mechanics, structural analysis, and material properties. This blog post provides a comprehensive step-by-step guide on calculating the ultimate moment, designing an RCC panel, and analyzing its performance to ensure safety and efficiency.
Table of Contents
Introduction
In the construction of retaining structures, especially those involving excavation and earth retention, RCC panels play a crucial role. These panels must be designed to withstand lateral earth pressures while maintaining structural integrity and serviceability. This guide illustrates the process of designing an RCC panel subjected to lateral earth pressure, ensuring it meets safety standards and performance criteria.
2.0 - Calculation of Ultimate Moment
2.1 Active Earth Pressure Coefficient (Ka)
The active earth pressure coefficient, Ka, represents the ratio of horizontal to vertical stress in a soil mass under active conditions. It is calculated using Rankine’s theory : Ka= 1−sin(ϕ)/1+sin(ϕ) Where:
- = Angle of internal friction of the soil.
Given:
- ϕ=35∘
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