[HISTORY: Adopted New Canaan Board of Selectmen 11-15-61;
effective 12-16-61. Amendments noted where applicable.]
The minimum area for fallout shelters shall be 80 square feet
for one to six persons. For each person over six, an additional 10
square feet shall be added. The minimum height of shelters shall be
six feet six inches.
All passages giving access shall be constructed so that any
nearby falling objects will not crush them. All exits shall be at
ground level and be so arranged that occupants can get out without
outside assistance. An approved emergency exit shall be provided.
A hand-operated blower system shall be provided to supply filtered
outside fresh air at a minimum rate of six cubic feet per person per
minute. The intake system shall be of rigid metal pipe with approved
tight joints terminating at least three feet above the surrounding
surfaces, shall include an approved system to filter dust from the
incoming air, and shall include an approved outside screening cap.
The associated exhaust system for expelling stale air shall be of
equal construction, and equally approved screening. Caps shall be
provided to close the exhaust and inlet vents from the inside shelter.
Ceiling shall be of sufficient thickness at all points to provide
the radiation shielding effectiveness equal to eight inches of concrete
of 1.2.3 proportions of portland cement, clean sharp sand and washed
gravel plus two feet of earth or the equivalent. The walls of below-ground
shelters shall be a minimum of 12 inch block or equivalent. Aboveground
shelters shall provide equivalent protection. All walls, ceiling and
floor must be of sufficient thickness to provide a protection factor
of 1,000.
All shelters shall be so constructed that an excess load of
300 pounds per square foot will be carried without damage to the structure.
All shelters shall be provided with a four inch metal trap and
Orangeburg, tile or cast-iron pipe to carry off all fluid material
which may accumulate in the shelter and deposit it at a level below
the floor of the shelter.
It is recommended that hand-operated fire-fighting equipment
be available in all shelters. Chemical extinguishers or compounds
which employ or can produce toxic or suffocating gases, such as carbon
dioxide extinguishers and bomb- or pump-type extinguishers employing
carbon tetrachloride, shall not be used.
[Amended 3-19-68; effective 4-19-68]
Before any building construction of fallout shelters is commenced
there shall be issued, upon proper application and payment of the
fee required by the Town Building Code, a permit therefor by the Town
of New Canaan Building Inspector.
All shelters shall comply with the requirements set forth by
the Office of Civilian Defense. Where not otherwise specifically approved,
all shelters shall in all respects comply with the requirements of
the Building Code of the Town of New Canaan. All outside shelters
shall comply with the Zoning Regulations of the Town of New Canaan.[1]
|
A shielded or rubber-covered antenna lead
shall be installed in an approved manner at the time of construction
of the shelter.
|
