This part of the ground floor plan shows the three trapezium shaped hot rooms and shampooing room, together with the needle shower and douche entered from the latter.
The design temperatures of the three hot rooms, in degrees Fahrenheit, were: the tepidarium (marked 'Hot room No.1') 130°; the caldarium (No.2) 160°; and the laconicum (No.3) 200°.
The triangular area to the right of the laconicum is the duct through which hot air enters. It flows through the hot rooms in turn, cooling as it goes.
© Malcolm Shifrin, 1991-2023