HomeMy WebLinkAboutProposed Structure ,
r- r
'� /
CITY OF
BUILD:P > ; : , ,_i ,
-- i
E.I INSPECTOR _$.77---t;,y‘(..C.
r
DAT' t_:_>--- (0r U '.1
C — • :i
, .., iiT
ai oe done
-
g code.
r ,;_ rview. n\-
��llil � ,,.. _ -� ..- f
, f. l �Ei13l ..i fi ES - - 1
-
l i7x%vt12E, 1.. t�uvtZ Rexer .. 0 oe2.0. 131'(`W-ePf`-) 1S /44149 17l/F/4-6/ .
— GR(ti, e. /nl rc�o(2^u=ve ►vwsT 13 c a\( /7�
i t '1-o Z�--� �&_e_ m N L=Z t t• K I +o VL O N ,z-n/ _____i_____—_—
--i—N1,,_TL"R"R 1_Z.4„i"p s 1'ri A r,.r,...,,, 2tS e- rvIOR"--- 7ti9 /4"/ `,fX
. Tff' v ._ /4 e9 ZA/cJ O^1• L.. c..-i-f SI 10 LE z
—' F} 5I (.4)nr 5 Rs\W15 ISN ,(?,4Z.;- k•J I 71A5W 0... 6:"{-, 5-1 .-e O !=
ICC/ANSI A117.1-2003 Chapter 4.Accessible Routes
Chapter 4. Accessible Routes
401 General 402.3 Revolving Doors, Revolving Gates, and
Turnstiles. Revolving doors, revolving gates, and
401.1 Scope. Accessible routes required by the turnstiles shall not be part of an accessible route.
scoping provisions adopted by the administrative
authority shall comply with the applicable provisions 403 Walking Surfaces
of Chapter 4.
403.1 General.Walking surfaces that are a part of
402 Accessible Routes an accessible route shall comply with Section 403.
402.1 General.Accessible routes shall comply with 403.2 Floor Surface. Floor surfaces shall comply
Section 402. with Section 302.
402.2 Components. Accessible routes shall con- 403.3 Slope.The running slope of walking surfaces
sist of one or more of the following components: shall not be steeper than 1:20.The cross slope of a
Walking surfaces with a slope not steeper than 1:20, walking surface shall not be steeper than 1:48.
doors and doorways, ramps, curb ramps excluding 403.4 Changes in Level. Changes in level shall
the flared sides, elevators, and platform lifts. All comply with Section 303.
components of an accessible route shall comply
with the applicable portions of this standard. 403.5
s lael ar comply Width.
Clear
with Tab ewidth
of an accessible
routTable 403.5—Clear Width of an Accessible Route
Segment Length Minimum Segment Width
<24 inches(610 mm)
32 inches (815 mm)1
>24 inches (610 mm) 36 inches (915 mm)
1 Consecutive segments of 32 inches(815 mm)in width must be separated by a route segment 48 inches(1220 mm)minimum in length
and 36 inches(915 mm)minimum in width.
24 max / 48 min / 24 max
610 1220 610
\ \
•
I .4"11="
u
c a Eu' cu"
co
coca co
coCh co —���-1
a — ��
—
\ \
\
Fig.403.5
Clear Width of an Accessible Route
15
ICC/ANSI A117.1-2003 Chapter 4.Accessible Routes
Table 405.2—Allowable Ramp Dimensions for Construction in
Existing Sites, Buildings, and Facilities
Slope' Maximum Rise
Steeper than 1:10 but not steeper than 1:8 3 inches(75 mm)
Steeper than 1:12 but not steeper than 1:10 6 inches (150 mm)
1A slope steeper than 1:8 shall not be permitted.
405.7 Landings.Ramps shall have landings at bot- 405.9 Edge Protection. Edge protection comply-
torn and top of each ramp run.Landings shall corn- ing with Section 405.9.1 or 405.9.2 shall be pro-
ply with Section 405.7. vided on each side of ramp runs and at each side of
ramp landings.
41 . . - • • - ..din•ssha •- - - - _•- •
steeper than - • a co - • , - - ': EXCEPTIONS:
• . s-rp,T� /4r-iv.- n.)&- v/orn4,vd '1° 1. Ramps not required to have handrails
ro ?� where curb ramp flares complying with
405.7.2 Width.Clear width of landings shall be at Section 406.3 are provided.
least as wide as the widest ramp run leading to
the landing. 2. Sides of ramp landings serving an adjoin-
ing ramp run or stairway.
405.7.3 Length. Landings shall have a clear
length of 60 inches (1525 mm) minimum. 3. Sides of ramp landings having a vertical
drop-off of/z inch(13 mm)maximum within
10 inches(255 mm)horizontally of the mini-
405.7.4 Change in Direction. Ramps that mum landing area.
change direction at ramp landings shall be sized
to provide a turning space complying with Sec- 405.9.1 Extended Floor Surface.The floor sur-
tion 304.3. face of the ramp run or ramp landing shall extend
12 inches (305 mm) minimum beyond the inside
405.7.5 Doorways. Where doorways are adja- face of a railing complying with Section 505.
cent to a ramp landing, maneuvering clearances
required by Sections 404.2.3 and 404.3.2 shall 405.9.2 Curb or Barrier.A curb or barrier shall
be permitted to overlap the landing area.Where be provided that prevents the passage of a 4-inch
doors that are subject to locking are adjacent to a (100 mm) diameter sphere where any portion of
ramp landing,landings shall be sized to provide a the sphere is within 4 inches (100 mm) of the
turning space complying with Section 304.3. floor.
405.8 Handrails. Ramp runs with a rise greater 405.10 Wet Conditions. Landings subject to wet
than 6 inches (150 mm) shall have handrails com- conditions shall be designed to prevent the accu-
plying with Section 505. mulation of water.
60 min 60 min
60 min i / 1525
1525 1525
l'
landing ramp run landing ii ramp run landing F
co
�
at least as wide as ramp run
(a)
ramp
run
(b)
Fig.405.7
Ramp Landings
23