The Detroit times., 1910-12-07

J In height, and In which any moor
or part thereof above the nrst Ia
occupied or used at any time as a
workshop or salssroom. there shall
be ut loast two CD separate and
continuous inside stairways, each
10 DO not less than three CD feet
six CD inches In width. In all
cases all stairways shall extend
from the topmost iioor having any
part used or occupied as n work
shop or salesroom. to tho ground
floor
Ir the number or persons occupy
Ing or using the floors above tho
arst. shah exceed three hundred
$500. then the combined width OF
Z the stairways shall not be less
than ten Q0) feet.
II the number OF persons occupy
Ing ar using the floors above the
arst, shah exceed seven hundred
tIO0). there shall he at least three
CD stairways. having a combined
width OF al least fifteen l5) feet
In any building OF Class 7. re-
ways under the above require
ments. one less stairway WIN be
sufficient n all the stairways arc
enclosed In Fireproof shafts with
Fire Doors at each fioor level.
one Cd less stairway VIII also
, be SUFFICIENT In Mill Protected. or
u Fireproof Construction Buildings
OF Class l. requiring three CD or
more stsirways. II all the stairs
and their landings are made en-
! tirely OF Fireproof Material
Provided. that in any building oc-
) cupied by ten hundred 10000 or
more persons above the first story.
there shall be required three (3)
stairways. having combined
width OF at least fifteen u5) feet
and all stairs and their landings
must be built entirely OF Ftreproof
Materials or be enclosed In Masonry
Fireproof shafts with Fire Doors.
In store buildings having not
= more than twenty five hundred
,2500) square feet OF ground floor
5 area and not exceeding three CD
stories In height. and In which the
. number OF persons occupying the
floors above the first story does not
exceed twenty-five t25), one con
2 tinuous inside stairway al least
4 three CD feet wide Will be sui
: flcient
See. =. NUMBER AND WIDTH
. or sTAIRwAYS IN CLASS ?
3 BUILDINGS. Ia all buildings of
4 class 2 hereafter erected ar al
b tered and over two (eb stories and
3 a basement In height. there shall
: be al least two "a, separate aud
5 continuous stairways. each at least
= three 90 feet wide and there shall
? be an increase OF six 90 incheNto
the combined width OF the stair
> ways for each additional one thou
! floor area. or fractional part there
!. or. over two thousand ,.000)
; square feet. and also an additional
: increase OF nine CD Inches for
: every story above the third ts)
? story.
D should the combined width OF the
stairways exceed nine 90 feet.
: there shall be three go stalrways.
2 AL siairways shall be ut least
! three CD feet wide. and three 60
81
e access 10 three 90 or more floors
above
5 For buildings OF class . having
, a ground floor area OF more than
o one thousand rve hundred tl5Oo)
square feet. or over three 80 stor-
. les and basement In height. one CD
3 OF the stairways must he enclosed
= In tireproof shaft. For such
; buildings having ground floor
& area OF more than five thousand
: $4,000 square feet there must be
: Fire Doors al each floor level and
? In all cases the openings from the
corridors must he easily accessible
TO all parts OF the buildings.
: For all buildings OF class .. over
s Ave 90 stories IN height. one 81
1 stairway must have the stairs and
their landings built Of incombust-
g ible material and be enclosed I'm
Fireproof Shaft and for buildings
& having ground floor area OF more
9 than five thousand $4,000 square
D feat the openings for the corridors
I must have Fire Doors.
? For Firfproof or Protected Con
: strnctinn buildings of class ..
I when the steas;s ard ,helrz landings
: are made sntirels of Ffreproof
8 Construction or enclosed In Fire
: proof shaft sYith Ere Doors; the
: Combined width-7 of lths stsirways
q NAV be decreased ~ three 90 feet
. and where three t3)s stairways are
! called for. one Cd less stairway
= viii be sufficient.
3 All stairways I'm buildings Of
4 Class . must connect directly with
. the Public Corridors. having direct
& access from each apartment. and
: all stairways must he continuous
= from the top story 10 the ground
Sec. .. OUTSIDE STAIRS IN
CLASS ] AND . BUILDINGS. III
: any buildings OF Class l and 2 are
4 equipped with outside stairs and
landings. with access through
: grade OF street or lot. then one
: % less inside stairway than here
. ia called for will he sufficient. pro-
u vlded every such building have at
least one inside stairway.
The widths OF the outside stairs
must meet with the same require
ments as inside stairs.
II any building OF Glass | be IL
s vided into different parts by Fire
W ais anO Il ire iOoIs, dUu sum
& building have AT least two (2)
. Elevators enclosed In brick walls
. and also have ample outside stairs
and landings with access through
doors from every part OF the build
3 ing and such stairs extend TO grade
OF street or lot, inside stairways
NAV be omitted.
For buildings OF Glass 2 and
over three CD stories In height.
{ the outside stairs and landings
Oh ha inrOn-
o bustible material or OF Mil Con-
struction as called for in Article
2 XXVI Section 5 OF the Ordinance.
2 All such outside stairs shall have
solid treads and risers shall not
; be less than three CD feet wide
3 and the risers shall not exceed
: the width Of the run" OF the
; tread more than tive 90 inches :, es
. an iron plate
. OF sTAIRWAYs IN OFFICE
3 BUILDINGS. In once Buildings
! over two ca stories In height. not
2 OF Fireproof or Protected Construc-
Il tion, and OF a floor area not eX-
: ceedinR Ave thousand t5000) square
s feet. there shall be at least two
o (2l separate stairways, each to be
o al least three go feet wide and
9 least six (6) feet six Co. Inches.
In such Office Buildings. there
1 shall be an Increase or six (6l
; inches TO the com bined width or
4 the stairways, for each additional
I ffteen hundred $4,000 square feet
5 OF ground floor area. or fractional
Q part thereof over FIVE thousand
o 10000 square feet and also an ad
/ ditional Increase OF six co inches
. FOR each story above the third.
3 should the combined width OF the
4 stairs exceed nine 90 feet, there
: shall be three 90 stairways.
G In once Buildings Of Mil Con-
: structlon where all the stairs and
3 their landings are built OF Incom-
o bustible Material or I'm any Office
% Building where all the stairs are
/ enclosed In Fireproof Shafts with
2 Fire Doors one On less stairway
3 will be sufficient. provided there be