Specifications mST0e6 -era 3
BUIVIOING PLANNING 70 S I ,-1,J 1_,x, a-0 s + S t
2. The opening between adjacent treads is not lira- mension of at least 4 inches (102 mm) and not
ited on stairs with a total rise of 30 inches (762 greater than 6 inches (160 mm) with a maximum
mm) or less. cross section of dimension of 2 inches(57 mm).
R311.5.3.4 Steps. The rise of a step or steps exclusive of 2. Type Il. Handrails with a perimeter greater than 61/4
a threshold shall not be less than 4 inches (102 mm) or inches (160 mm) shall provide a graspable finger re-
greater than 8 inches (203 mm). cess area on both sides of the profile. The finger re-
R311.5.3.5 Slope. Where the top or bottom riser adjoins cess shall begin within a distance of 3/4 inch (19 mm)
a sloping walk, garage floor or driveway, the top or bot- measured vertically from the tallest portion of the
tom riser may be reduced to less than 4 inches (102 mm) profile and achieve a depth of at least / inch (8
in height with the variation height of the riser not to ex -) within / inch (22 mm) below the widest por
ceed 3 inches (76 mm) in every 3 feet (904 mm) of walk Lion of the profile. This required depth shall con
or stairway width. tinue for atleast 3 /8 inch (10 mm) to a level that is not
less than 11/4 inches (45 mm) below the tallest por-
R311.5.4 Landings for stairways. There shall be a floor or tion of the profile. The minimum width of the hand -
landing at the top and bottom of each stairway. rail above the recess shall be 1' / inches (32 mm) to a
Exception: A floor or landing is not required at the top of maximum of 2 inches (70 mm). Edges shall have
an interior flight of stairs, provided a door does not swing a minimum radius of 0.01 inches (0.25 mm).
over the stairs. R311.5.7 ]illumination. All stairs shall be provided with il-
A flight of stairs shall not have a vertical rise greater than lumination in accordance with Section R303.6.
12 feet (3658 mm) between floor levels or landings. R311.5.8 Special stairways. Circular stairways, spiral
The width of each landing shall not be less than the stair- stairways, winders and bulkhead enclosure stairways shall
way served. Every landing shall have a minimum dimension comply with all requirements of Section 8311.5 except as
of 36 inches (914 mm) measured in the direction of travel. specified below.
R311.5.5 Stairway walking surface. The walking surface R311.5.8.1 Spiral stairways. Spiral stairways are per -
of treads and landings of stairways shall be sloped no milted, provided the minimum width shall be 26 inches
steeper than one unit vertical in 48 inches horizontal (2-per- (660 mm) with each tread having a 7 inches (190 mm)
cent slope). minimum tread depth at 12 inches from the narrower
edge. All treads shall be identical, and the rise shall be no
R311.5.6 Handrails. Handrails shall be provided on at least more than 9 inches (241 mm). A minimum headroom
one side of each continuous run of treads or flight with four of 6 feet 6 inches (1982 mm) shall be provided.
or more risers. The continuous handrail required for wind-
ers shall be located on the side where the tread is narrower.
R311.5.8.2 Bulkhead enclosure stairways. Stairways
serving bulkhead enclosures, not part of the required
R311.5.6.1 Height. Handrail height, measured verti- building egress, providing access from the outside grade
cally from the sloped plane adjoining the tread nosing, or level to the basement shall be exempt from the require-
finish surface of ramp slope, shall be not less than 30
ments of Sections 8311.4.3 and 8311.5 where the maxi -
inches (762 mm) and not more than 38 inches (965 mm). mum height from the basement finished floor level to
R311.5.6.2 Continuity. Handrails for stairways shall be grade adjacent to the stairway does not exceed 8 feet
continuous for the full length of the flight, from a point (2438 mm), and the grade level opening to the stairway is
directly above the top riser of the flight to a point directly covered by a bulkhead enclosure with hinged doors or
above lowest riser of the flight. Handrail ends shall be re- other approved means.
turned or shall terminate in newel posts or safety termi- R311.6 Ramps.
nals. Handrails adjacent to a wall shall have a space of R311.6.1 Maximum slope. Ramps shall have a maximum
not less than 1 / inch (38 mm) between the wall and the
handrails. slope of one unit vertical in eight units horizontal (12.5 -per-
cent slope).
Exceptions:
R311.6.2 Landings required. A minimum 3- foot -by -3 -foot
1. Handrails shall be permitted to be interrupted (914 mm by 914 mm) landing shall be provided:
by a newel post at the turn. 1. At the top and bottom of ramps,
2. The use of a volute, turnout, starting easing or
starting newel shall be allowed over the lowest 2. Where doors open onto ramps,
tread. 3. Where ramps change direction.
R311.5.6.3 Handrail grip size. All required handrails R311.6.3 Handrails required. Handrails shall be provided
' shall be of one of the following types or provide equiva- on at least one side of all ramps exceeding a slope of one unit
- lent graspability. vertical in 12 units horizontal (8.33- percent slope).
1. Type I. Handrails with a circular cross section shall R311.6.3.1 Height. Handrail height, measured above
have an outside diameter of at least 1' / inches (32 the finished surface of the ramp slope, shall be not less
mm) and not greater than 2 inches (51 mm). If the than 30 inches (762 mm) and not more than 38 inches I
handrail is not circular it shall have a perimeter di- (965 mm).
3 - 2005 OREGON RESIDENTIAL SPECIALTY CODE
' ' '' r i -,•-•-OFF:',1-•'':';,-' `'''''.-'.-,•-:.-'''• . , .-v-1 -, - .--, ' -- !
. ., .., ; . :L.. Td.,„'' ' ,' ii-„..- . ' , :-.-:-,-:-;%• . ..--. L , ; ' ',
. .
i. ,. - ',:i•I', .:,.:,,,,,..rti,. : '' .; , ' ' , ' ' . ,.
i .
''' - ' WZ'"'
.'.". ' _ , . . '4' '.'*.. ,,!*-■ . it ' ' 4 ' , '''' ,,,.„: i ,,,, - ',,T, ' .....,L ,.,:.,-.}7.„. .,,,,,...y......:Ht:,,..,-,-,-
.,:.,-,' .1'4.. -..;;,,.*, a , .,
:-.'' - i' ';';: : ••-'• , ,f-r,', ; \.; 4 . .:,',• . -',.. --• '• ',- - . . • - T ... !
>
. - ' - ."'...,'. , -lick •-...' .
. .
. _ .
- -
4.-
., , . . _...:, „4.. .;,4,,, -:,,, ,•.., „ -.--,.,';';'-14"-'1. t - .'''• . _.;".,''.. : - .' ', . * 4 0,, ',,, . ,....
..-
.,,
.,...,....„..
0411500tiorauw ..,...,:,..-. 4 ,. . :,:_.•.,_:.__.,,,.,..— . . .
, .
. .:,..
. 4
...
co
. , .. . , ...
' '. ..............,..
. _ ..,
0 0 0
„ .
. „
,„ .. . _
— _ ,.., . ,, i
. . ..
.. .,
•Zt - 0 0 CT
' ..- .
:._
- t '; ' '' — '''''''.-- --..,'._ _ „, y _
,._
E 0
------...
a..)
..i-7
A -
71) QC. Cl) -o
- ... ... . .. ,. .
L.._
It
1-',l'..:'..4,-..,,T''' ;',•-•-• '' ,-,...,. ,
„ .
.• • _„.. . . . .
..., ,.
N v cts
' i• '-';'..7-''''''' -__ • amippeir 1 ....
..0 • c
t ' ''' • ''r7
1
co
,AIIIIIIIEirZ, ''', - -•- ' '- -.,- .. r .11 , , • •
. , ... . ,
'..,rr.',,',..;.',.-:;';':-•t''''j;I:i- .. -.....1'4'7' .' : 111.1.11111111:tt_Hz'ii'illi..1 '::.,,..1'..i,1,.,..',..,,.',,..i't,'•,4:;'."-''-: 4 '' .. ..
- 'IfMI • '
MIIIIPII .
-:: -.........,..... r .: -.......- r,.
: .......„ . .., .. , . . ..
.... . . .....,
• • ' i..".""„ • , • 0 ". ' ___.., i
CO
• , • .., •
,,,,,:„. . .,
...,
4-.
,- 4,'
CD
I..1
• .
1
.:....,..........
- _ . • , ..,,,,..- ."-,N,,,,,•--:,-,:i. ,,,„.. ,,,, , ,
,- 1111111111111110111 _ -
CV r---
- '
U li
i. • ! +it '.: , '''.., '..,': 5 ,.7A., •P ]. .
...*
(/) :
,' i .'!:1,:,<Tig 1100.ihr,,7, i ,i' . ".■„.;;;z , ...
al A—
4 ,., . A --t“ ' '
...........
‘,..)
E ,..
. - ... _
': '. .. — Itit. .. ............A,_, .. _
,Nr.... .>7
.. „ ....
, ..„ ,... ....
CV 0
, .
- 'PY:'''' ''' ''' ', •"' ' ' t C.
. ' 0......, ,
• .:, . '::' ',"):::::,:-... .. • • . ,— ,, 1.Wg;;.' :..-,.
....,
\4
0
' ' '' - - -- - , •-•• ,,,,,,, ..0.4.'. , 2=',„ ..: arn.
.,' • , ';',• ,:...1.--:".-*!....104,04.,H'‘ii.!'"; ".;...;74-4.''''.41.i. r ...
, ,
. kr p r'r,,,,,A4,..44,44",,,,e-r,'[..141.-. i.,..."„")...--r•-•.."..;:r
ri 1 ,,,, --
kV
1..±...,..0 •
. . .. 1 ,.. -,4,' i. ;,..$,,,, .,,-,
. - .-.•
a At _
• ,
....›.., .. .
, .
i' i'll 11. 41111111MMONOXIC
l • yfr
, .
. .. , ..
. . ...
.,,„,,,...,
.. . ,. ..
lai . •' ..,,,
' , • ', ' ' ' '''.. , • 1. -.11 .: lir '
-:'','.::-. N 4, ' ) . ' ....: ' '..4....' 7. ..m". 4' '` + ' • . ,,.. -
'■ . ':, '.41 - . ''-'...• '
. .
. ,
j
a + Spiral Stair Notes:
•1.5 revolutions to ground sur- A -3 -1: Plan View •
`ace (approximately 17.5 feet
top rail to ground surface).
• • Last step entrance to yard
parole!! to orientation south - - -- 1 2.00 -
side of house. I 1 e
• e \ t1 _
• Preference for Tree' tread- 0.58
2.52
4Iy
f ..
3oltom step _.. AI ►�+ Q' -
orientation /
lir �
5.04 » X , 0 511 . r 4CP FLUSH tU• tE'
`$ Flooring to match first Tai roof lights to
floor deck pattern existing electrical g
I
if l.
U1
fi.
'• vAULTE✓ '(
LIYkNCB /DINING
, . 4 •. r qt 14 ` 1r 25r 0 x i »no
/ ., >r f f /1. I
+'/ '`..:////".2./7////':.::
fi / f UP 14 R.
Im R ": 1 : 4 ::: „.1: > j - / / .� // / �... ' ,, E ✓GE OF UPPER PLR I ♦ ,,,b _
f ,/'' f, . ''� ,�� , \ \ T Y. . I ..
,// _ R i5 - - ; - .7 .,(rj
/ 4 7 / - '-/!f � j / ^ .}aj
A -3-3: Conceptual Platform Support
•
NOTE: Sypp project engineer.
e
A -3-2: Conceptual Framing Plan r.
4 ti�t0. y project design eng(neer-
NOTE: Framing concepts require *value- 5 ‘L i I Notes: �, 7 :
don by protect design engineer. f 6 1 1" . rt
(jN • Tie a•.a cross.ingnlber
12.00 to joist :'- erAfoard y At
Sdrple embaf` - . �
wl oils `� - or � �r., 11111111 a
be ;- metal? "� fir/ 4'' See A -3-3 3 d�.
4 00r
10.58 ,„
//' 4 ' ' r v.,.
..?„,,,, _,,,,
,,,
,,: . /7 . i ., or
,, P ./ ..
t I % 1 r . I
/ /1 joist hanger
r ouble -joist to support overlying /~ . 0 2
otes:
•eck •herringbone° pattern
see A -3-1 i
— _
Cut existing joists at house and tie-in ledger Approximate Scale in Feet
card. 1 /2 " =1 '
Hanger joists to ledger board and structural •
earn to provide one floor' without visible under.
tins beam. Sheet A -3
Carry out ledger board to spiral stair center for Plan View Detail
upport-
0 2 4 8
Add structural cross member as designed and
f required by design engineer; conceptual sup- I -! Tanz Remodel
rt design Approximate Scale in Feet 7081 SW Locust Street
nA -3-3). 1/4 " =1' Tigard, Oregon