That the museum does not receive daylight, and the fireplace is in the bedroom's darkest spot against the party wall, additionally links the two.
Morphologically, any "septum" is composed of a party wall between adjacent structures.
The wide cavities and void against the northern party wall are used to run services, drainage and ventilation.
The decision to treat the scheme as a freestanding building abutting the northern neighbour, without relying structurally on the party wall, led to a rationalised approach to dimensioning and construction.
Beyond this, the fireplace location mirrors the studio sink, both elements on the party wall equally distant from their respective corners.
The treatment of the party wall turned out later to be a significant problem.
The duty of party wall surveyors is quasi-arbitral.
Subsection (h) provides for the removal of any overhanging portions of the adjoining owner's property to enable a vertical party wall to be erected.