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

part thereof over nve thousand
$4,000 square feet and also an ad-
ss or each stce. s q .. s.. n sSss
Should the combined width OF the
stairs exceed nine (sl feet. there
shall be three (D stairways.
In once suiidinfs OF MIN Con.
their landings are built OF Incom-
bustible Material or An any once
building whore all the stairs are
enclosed In Fireproof shafts with
viii be suficient. provided there be
each at least three ts) feet via:
I'm any such building.
In once Buildings OF Fireproof
or Protected Construction, there
shall be AT least one I'D stairway
at least four 90 feet wide and
whore the ground moor area ex-
OF the building exceeds six (s)
stories In height, there shall be
an additional stairway. increasing
the combined width OF all the
ston. o 81. 81 f .s yi ineh e.
for each two thousand (2oo0)
square feet OF fractional part over
nine thousand 10000 square feet
For Once Baildi9Es. Fire Es-
the following conditions, viz: They
must be built entirely OF Fireproof
Construction: they must have
stairs not less than two l2) feet
hand ran on each side, and the
risers shall not exceed the width
OF the tread more than two cd
inches, and they must connect
doors TO them from these corri-
In all enclosed courts the stairs
must be carried to the ground, but
Stairs srs may s stop f tMsis. ns "a, n Fee,
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
BUILDINGS Non-Fireproof Build
ings OF Class w. two CD or more
stories In height, shall have at least
two g, stairway each to be not
II the number OF persons at any
time occupying or using any or all
OF the floors above the FIRST. shall
exceed three hundred 5000 then
the width Of each Of the stairwsys.
(6) feet. Should the number OF
persons exceed eight hundred (s0o(
three cd stairways each nve CD
feet wide will be required.
For Fireproof Buildings or
buildings where the stairs are en-
closed in Fireproof Shafts. two CD
each to be at least four (O feet
The stairs In -Fireproof
Buildings over four (l) stories In
height. must either be made or
Fireproof or Incombustible Ma
terials. or be enclosed In Fire
Dr Sec, s 3. suMpER AND WIDTH
OF sTAIRvVAYS TN CLASS 8
BuILDiNGs. See, Article xxx.
Sections Il. IS. ls OF this ordin-
Sec. !. NuMsER AND WIDTH
BUILDINGS. school Buildings. OF
either Public or Private ownership.
II more than one story In height
and having three CD or more
. .Ssm' n. above ts least rs two 't ssp
arate stairways In separate halls.
No stairway shall be less than
four 90 feet wide In the clear.
should the number Of persons
frst eD story. exceed three hun
dred (soo) three CD stairways will
be required.
In School Buildings having two
tO stairways. the. width of each
inches for every one hundred uoo)
persons occupying rooms above the
In scSooi Buildings having three
or more stsi, r.s ,s,. the tsa nidt fn
teen (15) inches for every one hun
dred (100) persons occupying
rooms above the first story.
The walls enclosing stairways
Incombustible Material and have
Fire Doors at each floor level and
these walls must be carried on
Independent foundations.
Stairs In School buildings over
constructed OF Fireproof or In
combustible Materials.
Sec; g DECREASE IN WIDTHS
discretion OF the Department. or
Ss,idins r the widths Of ., s sss,T
ings. may be decreased from the
requirements herein called for. a.
such stairways approach the upper
stories and according to the occu-
yided that the number Of staivways
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. Q. BASEMENT STAIR
have at least one Cd stairway
leading directly to the street, al
ley, or to the floor above.
whensver any Basement u used
purposes. salesrooms or places OF
assembly or resort. II shall have
a stairway. leading directly to the
street or TO an open court with
All such stairways shall be not
less than three (3) feet six (O
inches I'm width. and shall be In
creased In width according TO the
number Of persons occupying such
Department OF Buildings.
Every Building in which Boilers
or Machinery requiring attention
are placed In the Basement. shall
have. At least one sro CD ,tction nary
leading directly to an ample OPEN
ing in the sidewalk or to other
ou Sec. 10. srAIRwA1s AROUND
hereafter be constructed around or
alongside OF an Elevator Shaft.
in any building over three (0
stories in height. unless such
stairway DO separated from the
Provided that in a Fireproof Build
ing the stairway may be adjacent
20 an Elevator, II the stairway and
elevator be surrounded by a Ma
sonry Ffreproof Wall with Fire
Doors.
Sec. IL. LOCATION OF STAIR
WAYS. All stairways whore prac-
teal, shall be continuous from the
topmost ioor 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 10 practical.
Where not continuous, the DIFF
ferent stairways must be con-
nected by ample corridors.
No stairway leading TO the
basement OF a building shall be