To limit the probability of inadequate strength of cementitious material, which could lead to the dislodgement of tiles or the ingress of water behind tiles, which could lead to compromised protection for moisture-vulnerable substrates, which could lead to the deterioration of the substrate, which could lead to studs being unable to resist expected impact, gravity or lateral loads.
This is to limit the probability of the deformation or detachment of interior finishes, which could lead to:
This is to limit the probability of harm to persons.