Failure Modes of Reinforced Concrete Beam Sections under Flexure (Balanced -Tension - Compression)

Different modes of failure of reinforced concrete sections under flexural loading. Balance failure, Compression failure and Tension failure.
What are the differences between different modes of failures?
Which is the recommended mode of failure of a flexural reinforced concrete member?
What is the unacceptable failure mode of RC members under bending moment?
Design and analysis of reinforced concrete sections using the BS code (British standards 8110).
Difference with the ACI 318 code.

The links of important videos are given below:
- Stress-strain curves for concrete and steel: https://www.youtube.com/watch?v=akgy9...
- Analysis of RC sections according to the BS8110 code: https://www.youtube.com/watch?v=RzpS9...
- Design of singly reinforced rectangular concrete sections: https://www.youtube.com/watch?v=3AbEl...
- Analysis of singly reinforced concrete rectangular sections: https://www.youtube.com/watch?v=LSTo7...
- Design of one-way slabs - Part 1: https://www.youtube.com/watch?v=J2XB5...
- Design of two-way slabs - Part 1: https://www.youtube.com/watch?v=Nk6qq...
- Design of Beams - Part 1: https://www.youtube.com/watch?v=Nk6qq...
- Design of Columns - Part 1: https://www.youtube.com/watch?v=ZjBTG...
- Foundations Part 1: https://www.youtube.com/watch?v=NI1N1...