The Detroit times. [volume] (Detroit, Mich.) 1903-1920, 1911-02-23

or ground moor area. or fractional
pert thereof over ave thousand
ditionsi incrsass OF SIX ls) inches
for each story above the third.
Should the combined width OF the
stairs exceed nine (s) feet. there
In Once Buildings OF Mill Con-
struction. where all the stairs and
their landings are built OF Incom-
bustible Material or In any once
enclosed In Firsproof shafts with
will be sufiicient. provided there be
not less than two CD stairwsys.
In once buildings OF Fireproof
or Protected Construction, there
shall be At least one Cd stairway
Mh.r least the four sroSaa s oSr w sss :ad
ceeds ave thousand (50o0) SO. n.
or the building exceeds six (O
stories In height; there shall be
th. eobinsd Width Of n, si ~.
stairways to six co. feet. with an
additional Increase OF six CD inches
for each two thousand (2O00)
square feet or fractional part over
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
hand rail on each side. and the
risers shall not exceed the width
r the t aes t %sys 1naa two soDn
with Public Corridors and have
doors to them from these corri-
In all enclosed courts the stairs
m "a "a ri al hA o. hnk
on streets and alleys the fixed
stairs may stop twelve (12) feet
above the street or alley level, and
have the lower run pivoted on one
end and balanced under the plat
Sec. s. NUMBER AND WIDTH
OF STAIRWAYS IN CLASS 4
BUILDINGS. Non-Fireproof Build
inEs OF Glass Nv. two CD OF more
two CD stairways. each to be. not
less than four 60 feet wide.
III the number OF persons at any
time occupying or using any or all
exceed three hundred tsooS then
the width OF each Of the stairways.
shall be increased TO at least hve
(5) feet. Should the number or
persons exceed eight hundred (soo)
feet wide viii 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 -Fireproof
Buildings over four co stories In
height. must either be made OF
Fireproof or Incombustible Ma
S ssraalsI sb or be enclosed In s'r'-
Sec. 9. NUMBER AND WIDTH
3 ar .S sTAaswA sY IN CLASS 1S
Sections IL. IL. 10 OF this ordin-
Sec. .. NUMBER AND WIDTH
OF STAIRWAYS IN SCHOOL
BUILDINGS. School Buildings OF
either Public or Private ownership.
and having three as or more
rooms above the frst C) story.
shall have at least two CD sep
arate stairways In separate halls.
No stairway shall be les. than
should the number OF persons
occupying the rooms above the
FIRST Cd story exceed three hun
dred 5000 three (a) stairways will
In School Buildings having two
, ca stairways. the width Of each
must not be less than twenty (20)
inches for every one hundred (100)
persons occupying rooms above the
In school Buildings having three
CD or more stairways. the width
OF each must be not less than ff-
teen (16l inches for every one hun
dred Qool persons occupying
The wallis enclosing statrways
and stair halls must be built OF
Incombustible Material and have
Fire Doors at each moor level and
these walls must be carried on
Independent foundations.
Stairs In School Buildings over
two CD stories I'm height must be
constructed OF Fireproof or In
combustible Materials.
Sec; 9. DECREASE IN WIDTHS
discretion of the Department OF
Buildings, the widths OF stair
ways in different Classes OF Build
ings. may be decreased from the
Requirement SS herein called AZ d. for
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 reauirements Of the occupany
and no single stairway be less In
width than the minimum require
ments OF each class.
sec.. 0. BASEMENT STAIR
WAYS. Every Basement shall
have at least one (D stairwsy
ley, or to the noor above.
Whenever any Basement 10 used
for living rooms, manufacturing
purposes. salesrooms or places OF
': :esy.y Or . s:iGrs di. sas to si x:
street or to an open court with
direct access to the street
All such stairways shall be not
less than three 60 feet six 90
creased in width according TO the
number or persons occupying such
Basement. and as required by the
Department of Buildings.
Every Building In which Boilers
are placed in the Basement. shall
have az least one Cd stationary
ladder or stair from such moor
leading directly to an ample OPEN
ing In the sidewalk or to other
Sec. 10. srArRwAYs AROUND
ELEVATORS. No stairway shall
hereafter be constructed around or
alongside OF an Elevator Shaft,
stories In height. unless such
stairway be separated from the
Elevator by a Fireproof Wall.
Provided that In a Fireproof Build
Ing the stairway may be adjacent
elevator be surrounded by Ma
sonry Ffreproof Wall with Fire
Doors.
Sec. II. LOCATION OF STAIR
WAYS. All stairways where prac-
teal, shall be continuous from the
topmost floor down to the ground
floor and when two ca or more
stairways are required. they shall
be located at as great a distance
from each other as Is practical.
Where not continuous, the DIFF