HomeMy WebLinkAbout04092009 ZPC Agenda Item 4
Regulation of
basements and other
"below-grade spaces"
Alternate approaches, 3-19-09
Issue Blue Approach Green Approach Yellow Approach
Definition of "below Floor more than 12 Floor more than 3 ft. Floor more than 3 ft.
grade space" inches below standard below standard base below standard base
base level level level
Size limit Yes: 100SF No No
Counts as framed area Yes Only if >100SF No
Counts as a story Only if >100SF Only if >100SF No
Height limit 7 ft. 7 ft. No limit
Plumbing fixtures Not allowed Not allowed Not allowed
(does not apply to
lines)
Use restriction Storage or mechanical Storage or mechanical Storage or mechanical
only only, unless there are only, unless there are
two EEP's two EEP's?
Number of emergency Only one required Two if >100SF Two if >200SF
egress paths (EEP's)
EEP directly to Not required ? ?
outdoors
Indoor swimming pool Not allowed Not allowed Allowed?
in below grade space
Excavation limits 1 :1 1.5: 1 1.5: 1
(ratio of distance from (45-degree angle of (greater setback; (greater setback;
property line to depth repose) shallower angle of shallower angle of
of hole) repose) repose)
Excavations limited Deeper than 12 inches, Deeper than 12 inches, Deeper than 12 inches,
volume larger than _ wider or longer than _ wider or longer than _
cu. ft. inches? inches?
Location in "footprint" Not required Not required Required, except for
of principal building EEP directly to
(below other building outdoors?
space)