since 1930. The water pipe system, including the well, the pumps and water storage tank,
had already been completed and the pipeline leading from the pump house to the main
building laid before the main construction project began. The work had been carried out by
Vesijohtoliike Onninen^940 , which in other words was to continue work on the site.
The company Radiator drew up water, sewer and heating equipment specifications
between August and October 1931. A separate ventilation design was not provided. The
water, hot water and drain pipes for the sanatorium main building, the Junior Physicians’
and the Administrative Director’s building, the workers’ apartment building as well as the
garage formed a joint system, while the Medical Director’s house had a separate system.
Similarly, all other buildings apart from the Medical Director’s house were heated by the
heating plant located on hospital grounds, while the Medical Director’s house had its own
heating station. The work was to be carried out in compliance with regulations adopted by
the City of Turku for similar projects, unless otherwise agreed.^941
In terms of the installation work, the work specifications required that the water and
drain pipes be placed within accessible shafts, or covered by a wall in a few places, or freely
in front of a wall. As a rule, the specifications stated that the design and construction of
the pipe system should aim at minimising noise.^942 Rain water was directed from the roof
via a downpipe to the basement, where it flowed into the main sewer via water traps. Cold
water pipes ran within the building. The building was equipped with fire hydrants. Film
rooms were equipped with three automatic heat-sensitive sprinklers.^943
The general heating system selected for the sanatorium was a central heating pump
system.^944 The work specification drew special attention to reducing the noise of the
two circulation pumps to a minimum. Steam heating was used as a secondary system
for areas where heating was necessary even in the summer, when the main system was
out of service. Steam was also required for water boilers and various machines and
equipment, such as the mangle, soup kettles, washing machines, disinfection equipment
and sterilisation stations. In August 1931, the Building Board decided to order furnace
940 Building Committee September 15, 1930, Section 1. PSA.
941 Specification of the water, sewage and heating systems, pp. 2 and 6. Specifications, cost calculations and
contracts. PSA.
942 All joints in any piping placed within risers had to be accessible through service hatches. In rooms, mainly in
buildings A and B, where all piping ran hidden and the walls had hard surfaces, each visible pipe section had to
be chromed. Ibidem, pp. 2–3.
943 Ibidem, p. 4.
944 The central boiler station was fitted with two 2,000 litre boilers that could heat water to 70 degrees centigrade
in one hour. Hotwater pipes were made of drawn copper pipe. The piping was equipped with supply and return
pipes and electrical centrifugal pumps. Water circulation was optimised so that only one litre of cooled-down
water at most needed to be run to obtain hot water, regardless of the outlet. To achieve even circulation, each
riser and group was equipped with an electrical valve and each pipeline, including the main and supply and return
pipes, were installed with a stop valve. The hot water pipes were insulated. The expansion U-bends were placed
at 12 metre intervals at a maximum. Ibidem, pp. 5–6.