Correspondence April 29, 2008
Harlow Spaan
7405 SW Beveland Rd.
Tigard, OR 97304
RE: S.M., LLC OFFICE CONVERSION
Permit: SIT2008 -00003 Construction Type: VB
Address: 7405 SW Beveland Rd. Occupancy Type: B
The Site plan review was performed under the 2005 Oregon Structural Specialty Code, and
2007 Oregon Fire Code. The submitted plans are approved subject to the following
conditions:
Site accessibility, exterior routes of travel. At least one accessible route shall be
provided within the boundary of the site from public transportation stops, accessible
parking spaces, passenger loading and drop -off zones, and public streets or sidewalks to an
accessible entry. When more than one building or facility is located on a site, at least one
accessible route shall be provided between accessible buildings and accessible site facilities.
The accessible route shall be the most practical direct route among accessible building
entries, accessible site facilities and the accessible entry to the site. ORSC 1103.1
Curb ramps. Curb ramps shall have a maximum slope of 1 unit vertical in 12 units
horizontal. Transitions from ramps to walks, gutters or vehicular ways shall be flush and
free of abrupt changes in height. Maximum slopes of adjoining gutters and road surface
immediately adjacent to the curb ramp or accessible route shall not exceed 1 unit vertical in
20 units horizontal. ORSC 1103.2.2
Width. Curb ramps shall not be less than 36 inches wide, exclusive of the required side
slopes. ORSC 1103.2.2.2
Sides slopes of curb ramps. Curb ramps located where pedestrians must walk across the
ramp, or where not protected by handrails or guardrails, shall have sloped sides. The
maximum side slope shall be 1 unit vertical in 12 units horizontal (8.33- percent slope); [see
ADAAG Figure 12(a)]. Exception: Where the width of the level walking surface at the top
of the ramp is 48 inches (1219 mm) or greater, when measured parallel to the run of the
curb ramp, the maximum side slopes may be 1 unit vertical in 10 units horizontal. Curb
. ramps with returned curbs may be used where pedestrians would not normally walk across
the ramp [see ADAAG Figure 12(b)]. ORSC 1103.2.2.3
Location. Built -up curb ramps shall be located so as not to project into vehicular ways or
be located within accessible parking spaces and aisles (see ADAAG Figure 13). ORSC
1103.2.2.4
Location at marked crosswalks. Curb ramps at marked crosswalks shall be wholly
contained within the markings; excluding any sloped sides (see ADAAG Figure 15).ORSC
1103.2.2.6
Surface. Curb ramps on accessible routes shall have a firm, stable and slip- resistant surface.
ORSC 1103.2.2.7
Detectable warnings. Curb ramps shall have detectable warnings that shall extend the full
width and depth of the curb ramp, including the flairs, complying with Section 1109.16.
ORSC 1103.2.3
Vehicular areas and passenger loading zones. Where an accessible route crosses or
adjoins a vehicular way, where passenger loading zones are provided and where there are
no curbs, railings, or other elements separating the pedestrian and vehicular areas
detectable by a person who has a severe vision impairment, the boundary between the areas
shall be defined by a continuous detectable warning prior to the vehicular way not less than
36 inches wide complying with Section 1109.16 (see ADAAG Figure 14). When
the accessible route crosses a vehicular way, only the boundary of the areas at the entrance
to and exit from the vehicular way need to have detectable warnings. ORSC 1103.2.3.2
Walks. All walks on accessible routes shall be continuous with a minimum clear width
complying with Section 1109.4.2. ORSC 1103.2.4
Height. There shall be a clear continuous minimum height complying with Section
1109.4.3. The running slope shall not exceed 1 unit vertical in 20 units horizontal. Cross
slopes shall not exceed 1 unit vertical in 50 units horizontal. Exception: Where site
infeasibility precludes a running slope of 1 unit vertical in 20 units horizontal, the least
possible running slope shall be provided. Walks with slopes in excess of 1 unit vertical in 20
units horizontal shall comply with Section 1109.7. In no case shall a walk that is part of an
accessible route have a running slope greater than 1 unit vertical in 12 units horizontal.
Handrails are not required on walks with a slope of 1 unit vertical in 20 units horizontal, or
less. ORSC 1103.2.4.2
Passing space. Walks less than 60 inches in continuous width shall provide passing space
at reasonable intervals but not to exceed every 200 feet complying with Section 1109.2.1.
Passing space may be provided at landings, at building entrances or at the intersection of
two walks. The passing space at the intersection of two walks shall have the minimum
possible running slope and a cross slope that does not exceed 1 unit vertical in 50 units
horizontal. ORSC 1103.2.4.4
Surfaces. Surfaces shall be firm, stable and slip- resistant complying with Section 1109.6.
ORSC 1103.2.4.5
Separation. Walks paralleling vehicular ways shall be separated from vehicular ways by
curbs, planted areas, railings, or other barriers between the pedestrian area and vehicular
areas. Walks not separated shall be defined by a continuous detectable warning that is 36
inches wide. Separations shall comply with Section 1109.7.7 ORSC 1103.2.4.7
Protruding objects. Protruding objects shall not reduce the minimum clear width of the
walk and shall comply with Section 1109.5. ORSC 1103.2.4.8
Parking Facilities. Where parking is provided accessory to an affected building, accessible
parking shall be provided, constructed, striped, signed and maintained as required by ORS
447.233, by this section, and by Sections 1104.2, 1104.4 and 1108.4.12. ORSC 1104
Design and construction. In addition to the requirements of Sections ORSC 1104.4
1104.1, 1104.2 and 1104.3, all accessible parking spaces shall be designed and constructed
in accordance with this section.
Vertical clearance. Where accessible parking spaces are required for vans, the vertical
clearance shall not be less than 98 inches at the parking space and along at least one vehicle
access route to such spaces from site entries and exits. ORSC 1104.4.2
Slope. Accessible parking spaces and access aisles shall be located on a surface with a slope
not to exceed 1 unit vertical in 50 units horizontal in all directions. ORSC 1104.4.3
Surface. Parking spaces and access aisles shall be firm, stable, smooth and slip resistant.
ORSC 1104.4.4
Shortest accessible route. Accessible parking spaces shall be located on the shortest
practical accessible route to an accessible building entry. In facilities with multiple
accessible building entries with adjacent parking, accessible parking spaces shall be
dispersed and located near the accessible entries. Except as provided in Section 1104.3,
where there are multiple parking facilities accessory to the same building, the accessible
parking spaces required for all the parking facilities shall be located in the parking facility
that provides the shortest practical accessible route. This requirement shall be met even
where parking facilities are designated for different uses or users. Wherever practical, the
accessible route shall not cross lanes of vehicular traffic. Where crossing traffic lanes is
necessary, the route shall be a designated marked crossing with detectable warnings at each
entrance to the crossing of vehicular traffic lanes. ORSC 1104.4.5
• Circulation path. Where a building or a portion of a building is required to be accessible,
an accessible route shall be provided to all portions of the building, to accessible building
entries, to accessible building facilities and elements, and connecting to exterior accessible
routes. An accessible route to areas of primary function may serve, but not pass through,
kitchens, storage rooms, toilet rooms, bathrooms, closets or other similar spaces.
Accessible routes serving any accessible portion of a building, facility or element shall also
serve as a means of egress or connect to an area of rescue assistance. Accessible routes shall
be designed and constructed in accordance with Section 1109.4. ORSC 1108.1.1
Accessible entries. Each building or structure, and each separate tenancy within a building
or structure, shall be provided with at least one public entry that is accessible. Where the
number of planned entries is equal to or less than the number of required means of egress,
all public entries shall be accessible. Where the number of planned public entries exceeds
the number of required means of egress, the number of accessible public entries shall equal
the number of required means of egress or at least 50 percent of all planned public entries,
whichever is greater. One of the accessible public entries shall be the primary entry to the
building. At least one accessible entry must be a ground floor entry. ORSC 1108.1.1.2
Detectable warnings. Detectable warnings complying with Section 1109.16 shall be
provided at hazardous vehicular areas, and where access routes cross vehicular ways.
ORSC 1108.4.13
Wheelchair turning spaces. Wheelchair turning spaces shall be designed and constructed
to satisfy one of the following requirements:
1. A turning space not less than 60 inches in diameter [see ADAAG Figure (a)]; or
2. A T- shaped space where the width is not less than 36 inches. Each segment of the T
shall be clear of obstructions for not less than 12 inches in each direction [see ADAAG
Figure 3(b)1.
ORSC 1109.2.2
Accessible route. Accessible routes shall be designed and constructed according to this
section. Ramps in an accessible route shall comply with Section 1109.7. Elevators and
platform lifts in an accessible route shall comply with Section 1108.3. Doors in an
accessible route shall comply with Section 1109.9. Protruding objects along an accessible
route shall comply with Section 1109.5. Floor coverings and surface treatments of an
accessible route shall comply with Section 1109.6. ORSC 1109.4
Width. The minimum clear width of an accessible route shall be 36 inches except at doors
(see Section 1109.9.2). Where an accessible route includes a 180 - degree turn around an
obstruction that is less than 48 inches wide, the clear width of the accessible route around
the obstruction shall be 42 inches minimum [see ADAAG Figures 1, 7(a) and 7(b)]. Where
an accessible route is less than 60 inches wide, passing spaces at least 60 inches by 60
inches shall be located at intervals not to exceed 200 feet. A T- shaped intersection of two
corridors or walks may be used as a passing space. Exception: The minimum width for
single wheelchair passage may be 32 inches for a maximum distance of 24 inches. ORSC
1109.4.2
Height. Accessible routes shall have a clear height of not less than 80 inches. Where the
vertical clearance of an area adjoining an accessible route is less than 80 inches, but more
than 27 inches, a continuous permanent barrier shall be installed to prevent traffic into
such areas of reduced clearance [see ADAAG Figure 8(c -1)]. ORSC 1109.4.3
Slope. An accessible route shall have a running slope not greater than 1 unit vertical in 12
units horizontal. An accessible route with a running slope greater than 1 unit vertical in 20
units horizontal shall comply with Section 1109.7. Cross slopes of an accessible route shall
not exceed 1 unit vertical in 50 units horizontal. 1109.4.4
Changes in level. Accessible routes and accessible spaces shall have continuous common
floor or ramp surfaces. Abrupt changes in height greater than 1/4-inch shall be beveled
with a slope no greater than 1 unit vertical in 2 units horizontal. Changes in level greater
than 1/2-inch shall be accomplished by means of a ramp meeting the requirements of
Section 1109.7 [see ADAAG Figures 7(c) and (d)]. 1109.4.5
1109.7.9 Slip resistance. Ramps on accessible routes shall have a slip- resistant surface.
1109.8 Stairways. Stairways required to be accessible shall comply with Section 1009 and
the provisions of this section. See Section 1013 for guardrail requirements (see ADAAG
Figure 19). Open risers shall not be permitted. Stair nosings shall be flush and rounded to a
radius of 1/2-inch maximum. Risers shall be sloped, or the underside of the nosing shall
have an angle of not less than 60 degrees from the horizontal. Nosings shall project no
more than 1 1/2 inches (see ADAAG Figure 18).
Stair nosings and treads shall have a slip- resistant surface. Exposed stairways and their
approaches shall be constructed to prevent the accumulation of water on walking surfaces.
1109.8.6 Stairway handrails. Stairways shall have handrails on both sides of the stairs.
Handrails shall comply with Section 1109.10.11 and shall have the following features:
1. Handrails shall be continuous along both sides of the stairs. The inside handrail on
switchback or dogleg stairs shall always be continuous [see ADAAG Figures 19(a) and (b)].
2. If handrails are not continuous, they shall extend at least 12 inches beyond the top riser
and at least 12 inches plus the depth of one tread beyond the bottom riser. At the top, the
extension shall be parallel with the floor or ground surface. At the bottom, the handrail
shall continue to slope for a distance of the width of one tread from the bottom riser. The
remainder of the extension shall be horizontal [see ADAAG Figures 19(c) and (d)].
Handrail extensions shall comply with ADAAG Figure 19.
3. The clear space between the handrails and the wall shall be 11/2 inches.
•
4. Gripping surfaces shall be uninterrupted by newel posts, other construction elements or
obstructions.
5. The top of handrail gripping surface shall be mounted between 34 inches and 38 inches
above stair nosings.
6. Ends of handrails shall be returned to the floor, wall or post.
7. Handrails shall not rotate within their fittings.
1109.9.5 Thresholds at doors. Thresholds at doors shall comply with Section 1109.4.5.
Thresholds at doorways shall not exceed 3/4 -inch in height for exterior sliding doors or
1/2-inch for other types of doors. Raised thresholds and floor level changes at accessible
doorways shall be beveled with a slope no greater than 1 unit vertical in 2 units horizontal.
1113.3.2 Ramps. Curb ramps and ramps constructed on existing sites, or in existing
buildings or facilities, may have slopes and rises not as specified in this chapter, where
space limitations prohibit the use of 1 unit vertical in 12 units horizontal or less, provided
that:
1. A slope not greater than 1 unit vertical in 10 units horizontal is allowed for a maximum
rise of 6 inches.
2. A slope not greater than 1 unit vertical in 8 units horizontal is allowed for a maximum
rise of 3 inches.
3. Slopes greater than 1 unit vertical in 8 units horizontal are prohibited.
Exposed ramps and their approaches shall be constructed to prevent the accumulation of
water on walking surfaces.
When submitting revised drawings or additional information, please attach a copy of the
enclosed City of Tigard, Letter of Transmittal. The letter of transmittal assists the City
of Tigard in tracking and processing the documents.
Respectfully,
Loraine Sellers
Plans Examiner
loraine @tigard - or.gov
Phone: 503.718.2708
Fax: 503.624.3681