The Detroit times. [volume] (Detroit, Mich.) 1903-1920, 1911-02-21


OF ground moor area. or fractional
ts0Oo) square feet and also an adj
ditional Increase OF six (e) Inches
for each story above the third.
should the combined width Of the
shall be three (s) stairways.
In once Buildings OF Mill Con-
struction. whore all the stairs and
their landings are built OF Incom-
Building where all the stairs are
enclosed In Fireproof Shafts with
will be SUFFICIENT. provided there be
sSs s at l sasn , iwS ca i fs.t ~id:
In any such building
In once buildings OF FIreproof
or Protected Construction, there
at least four ca feet wide and
where the ground floor area ex-
ceeds fve thousand (5000) So. n.
OF the building exceeds six ts)
the combined width OF all the
stairways TO six t6) feet. with an
additional Increase OF six (6) Inches
for each two thousand (200o)
nine thousand 10000 square feet.
For once Buildings. Fire Es-
capes may be counted as stairs, on
the following conditions. viz: They
must be built entirely OF Fireproof
stairs not less than two (2) feet
wide with solid treads, and with
a hand rail on each side. and the
risers shall not exceed the width
OF the tread more than two CD
inches, and they must connect
with Public Corridors and have
doors to them from these corri-
doris.
In all enclosed courts the stairs
must be carried TO the ground. but
on streets and alleys. the fixed
stairs may stop twelve u2) feet
above the street or alley level. and
have the lower run pfvoted on one
end and balanced under the plat
Sec. 6. NUMBER AND WIDTH
OF STAIRWAYS IN CLASS
BUILDINGS Non-Fireproof Build
saS ss 81 in c height IT, :h sM0 have S or at
two CD stairways. each to be not
less than four (4) feet wide.
III the number or persons at any
time occupying or using any or all
exceed three hundred 5000 then
the width OF each OF the stairways,
shall be increased TO at least hve
(5) feet. Should the number OF
persons exceed eight hundred (soo)
feet wide will be required.
For Fireproof buildings or
buildings where the stairs are en-
closed In Fireproof Shafts. two Cd
stairways only will be required,
wide.
The stairs in Non Fireproof
Buildings over four 90 stories In
height, must either be made or
terials. or be enclosed In Fire
Sec. 8. NUMBER AND WIDTH
OF sTAIRWAYS IN CLASS
Sections IA. 10. 10 OF this ordin-
OF sTAIRWAYS IN SCHOOL
BUILDINGS. School Buildings OF
either Public or Private ownership,
and having three (s) or more
rooms above the nrst (p story,
shall have at least two CD sep
arate stairways I'm separate nails
No stairway shall be less than
Should the number OF persons
occupying the rooms above the
first Cd story exceed three hum
dred (3oo) three (O stairways will
In School Buildings having two
CD stairways, the width OF each
must not be less than twenty (20D
inches for every one hundred (100)
persons occupying rooms above the
In schpol Buildings having three
CD or more stairways. the width
OF each must be not less than fif-
teen u5l inches for every one hun
dred (i0o) persons occupying
The walls enclosing stairways
and stair halls must be built OF
Incombustible Material and have
Fire Doors at each door level and
t these walls must be carried on
Stairs I'm School Buildings over
two CD stories in height must be
constructed OF Fireproof or In
combustible Materials.
Sec. s. DECREASE IN WIDTHS
Sscr 9hPER 81 sT IA te Of
Buildings, the widths OF stair
ways in different Glasses OF Build
ings. may be decreased from the
requirements herein called for. an
stories and according to the occu-
pancy OF these upper stories. pro-
vided that the number OF stairways
be maintained TO- the top story,
the aggregate widths conform to
the requirements Of the occupany
and no single stairway be less In
width than the minimum require
ments OF each class.
~ Sec; 2; BASEMENT sTA AIR;
have at least one I'd stairway
leading directly to the street. al
Whenever any Basement 10 used
for living rooms, manufacturing
purposes. salesrooms or places or
assembly or resort. II shall have
,r ssrwsy leading sns d,rs Sapy, TO Win fns
direct access to the street.
All such stairways shall be not
less than three CD feet six lO
inches in width. and shall be in
number OF persons occupying such
Basement, and as required by the
Department of Buildings.
Every Building In which Boilers
or Machinery requiring attention
have at least one (D stationary
ladder or stair from such floor
leading directly to an ample OPEN
ing in the sidewalk or to other
Sec. 10. sTAIRwAYs AROUND
ELEVATORS. No stairway shall
hereafter be constructed around or
in any building over three (s)
stairway be separated from the
Elevator by a Flreproof Wall.
Provided that in a Fireproof Build
ing the stairway may be adjacent
to an Elevator, II the stairway and
elevator be surrounded by a Ma
sonry Fireproof Wall with Fire
Doors.
Sec. IL. LOCATION OF STAIR
WAYS. All stairways where prac-
tical, shall be continuous from the
topmost floor down to the ground
floor and when two CD or more
stairways are required. they shall
be located at as great q distance
from each other as IL practical.
Where not continuous, the DIFF
ferent stairyays must be con-
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