12.5
OPERABLE WINDOWS:
a.
Operable windows are more costly than fixed windows and more
subject to drafts, leaks, and maintenance problems, but may be
required or justifiable for:
-
washing and glazing from within the building
-
ventilation in non-air-conditioned buildings
-
code compliance(patient bedrooms in non-sprinkled
buildings)
-
emergency ventilation in case of loss of electrical power
to HVAC system (when HVAC system is not on emergency power
system)
Make design decisions on operability in close consultation
with the medical center management, specifically addressing
all the factors above. Operable windows shall be in-swinging
and side-hinged unless historic design compatibility or other
specific conditions dictate otherwise. All operable windows
in air-conditioned buildings shall normally be closed and
locked. For safety, operable windows in patient bedrooms
shall have hold-open hardware which secures the window at a
maximum opening of 150 mm (6") for emergency ventilation.
b.
When in open position for ventilation, window sash shall not
project into the room beyond edge of stool or face of
convector, nor beyond exterior reveals of window sills within
2000 mm (6'6") of grade.
c.
Mechanically operated windows shall be avoided. If they are
necessary for high or inaccessible windows, then the
mechanical operators shall be simple and durable.
12.6
SAFETY GLAZING:
a.
Glaze all windows in geropsychiatric areas with 8 mm (5/16")
thick laminated glass.
b.
If laminated glass is required for double-glazed windows,
provide it for interior panes only, except for windows facing
a courtyard with sill/stools less than 2000 mm (6'6") above
the ground. Where this occurs, laminated glass is required
for both panes.
13.
SCREENS:
13.1
WINDOW SCREENS: Provide insect screens only on operable windows
in spaces which are not air conditioned.
13.2
VENTILATION SYSTEM SCREENS: Provide bird screens on mechanical
ventilation system air supply and exhaust openings in exterior
walls. Provide insect screens on the inside of wall openings and
louvered openings in exterior walls where there are no duct
connections.
14.
SHADES, BLINDS, DRAPERIES, AND CURTAINS:
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