Correspondence April 9, 2008
John Westfall and Bill Scotsman
7933 N. Upland Dr.
Portland, OR 97203
RE: Moved Modular.
Project Information
Permits: SIT2008 -00008 & BUP2008 -00087
Construction Type: VB
Address: 14650 SW 97 Ave.
Occupancy Type: E
The Site and Building plan reviews were performed under the Oregon Structural Specialty
Code (OSSC) 2005 edition and 2007 Oregon Fire Code. The submitted plans are approved
subject to the following conditions:
1103.1 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.
1103.2 Design and construction. Accessibility required by this section shall be designed
and constructed in accordance with this section and Sections 1107, 1108 and 1109.
1103.2.4 Walks. All walks on accessible routes shall be continuous with a minimum clear
width complying with Section 1109.4.2.
1103.2.4.2 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
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(5- percent slope).Cross slopes shall not exceed 1 unit vertical in 50 units horizontal (2-
percent slope).
Exception: Where site infeasibility precludes a running slope of 1 unit vertical in 20 units
horizontal (5- percent slope), the least possible running slope shall be provided. Walks with
slopes in excess of 1 unit vertical in 20 units horizontal (5- percent slope) 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 (8.33- percent slope).
Handrails are not required on walks with a slope of 1 unit vertical in 20 units horizontal (5-
percent slope), or less.
1108.1.1 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. Except within an adaptable dwelling unit, 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.
1108.1.1.4 Stairways. Interior and exterior stairways connecting levels that are not
connected by an elevator, ramp or other accessible means of vertical access shall comply
with Section 1109.8.
1109.2.2 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 (1524 mm) in diameter [see ADAAG Figure (a)];
or
2. A T- shaped space where the width is not less than 36 inches (914 mm). Each segment of
the T shall be clear of obstructions for not less than 12 inches (305 mm) in each direction
[see ADAAG Figure 3(b)]
1109.3 Controls and hardware. Where other sections of Section 1109 specifically require
controls and hardware to be accessible, such controls and hardware shall comply with this
section.
1109.3.2 Operation. Handles, pulls, latches, locks and other operating devices on doors,
cabinets, plumbing fixtures and storage facilities shall have lever or other shape permitting
operation by wrist or arm pressure and not requiring tight grasping, pinching or twisting to
operate. The force required to activate such equipment, other than exterior doors, shall be
no greater than 5 pounds -force (2.22 N). Doors shall comply with Section 1109.9
1109.4 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.
1109.4.2Width. The minimum clear width of an accessible route shall be 36 inches (914
mm) 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 (1219 mm) wide, the clear
width of the accessible route around the obstruction shall be 42 inches (1067 mm)
minimum [see ADAAG Figures 1, 7(a) and 7(b)]. Where an accessible route is less than 60
inches (1524 mm) wide, passing spaces at least 60 inches by 60 inches (1524 mm by 1524
mm) shall be located at intervals not to exceed 200 feet (60 960 mm). 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 (813 mm)
for a maximum distance of 24 inches (610 mm).
1109.4.3 Height. Accessible routes shall have a clear height of not less than 80 inches
(2032 mm). Where the vertical clearance of an area adjoining an accessible route is less
than 80 inches (2032 mm), but more than 27 inches (686 mm), a continuous permanent
barrier shall be installed to prevent traffic into such areas of reduced clearance [see
ADAAG Figure 8(c -1)].
1109.4.4 Slope. An accessible route shall have a running slope not greater than 1 unit
vertical in 12 units horizontal (8.33- percent slope). An accessible route with a running slope
greater than 1 unit vertical in 20 units horizontal (5- percent slope) shall comply with
Section 1109.7. Cross slopes of an accessible route shall not exceed 1 unit vertical in 50
units horizontal (2- percent slope).
1109.4.5 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 (6.4 mm)
shall be beveled with a slope no greater than 1 unit vertical in 2 units horizontal (50- percent
slope). Changes in level greater than 1/2-inch (12.7 mm) shall be accomplished by means
of a ramp meeting the requirements of Section 1109.7 [see ADAAG Figures 7(c) and (d)].
1109.7.8 Exterior ramps. Exposed ramps and their approaches shall be constructed to
prevent the accumulation of water on walking surfaces.
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).
1109.8.2 Open risers. Open risers shall not be permitted.
1109.8.3 Nosings. Stair nosings shall be flush and rounded to a radius of 1/2-inch (12.7
mm) 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 (38 mm) (see ADAAG Figure 18).
1109.8.4 Slip resistance. Stair nosings and treads shall have a slip- resistant surface.
1109.8.5 Exterior stairways. 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 (305 mm) beyond the
top riser and at least 12 inches (305 mm) 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 (38 mm).
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 (864 mm) and
38 inches (965 mm) above stair nosings.
6. Ends of handrails shall be returned to the floor, wall or post.
7. Handrails shall not rotate within their fittings.
Respectfully,
Loraine Sellers
Plans Examiner
loraine @tigard - or.gov
Phone: 503.718.2708
Fax: 503.624.3681