Goldratt (1997) proposed the Theory of Constraints (TOC) and Critical Chain Project (CCP) scheduling, which provide the concepts for achieving effective activity duration control. Literature shows that the TOC and Critical Chain concepts are increasingly being accepted and applied in various industries. For example, the application of TOC and Critical Chain concepts in the construction industry is to manage buffers effectively in scheduling planning and control.

i. Buffer management aims to generate a rigorous construction plan that protects against uncertainties and reduces the potential impact of construction changes. With any relevant examples, explain the buffer management in the construction field in detail.

ii. In the context of CCP scheduling, what is the purpose of buffers?