Final answer:
This question deals with the installation of a Yolk Vent in the drainage systems of buildings taller than 11 storeys, which is a concept in the engineering field, particularly plumbing.
Step-by-step explanation:
The question refers to a concept within the field of plumbing which is a part of engineering. Specifically, it is related to the installation of ventilation systems in high-rise buildings. In plumbing, a Yolk Vent is a type of vent that is added to a soil or waste stack to prevent negative pressures within the stack from pulling water out of the traps connected to fixtures. This yolk vent serves as a means to balance the pressure within the plumbing system of buildings that exceed certain heights, in this case, more than 11 storeys. It is crucial for maintaining the proper function of the drainage system and preventing sewer gases from entering living or working spaces through the fixtures.