Specifications FILE COPY
ECE1VED J Engineering, Inc.
4660 NE Belknap Court, Suite 115, Hillsboro, Oregon 97124
MAR 2 3 2005 (503) 640 -6808 FAX (503) 693 -9738 www.j2keng.com
March 2 34T '04' TIGARD Page 1 of 2
_BUILDING DIVISION FH-E COPY
Mr. Brian Blalock
Plans Examiner Supervisor
City of Tigard, Building Division
13125 SW Hall Blvd.
Tigard, OR 97223
•
euPxoo5 00 Og ( 1 - •
PROJECT: Ashbrook Condominiums
10390 & 10420 & 10450 & 10480 SW 90 Avenue, Tigard
RE: Building Design Review
JOB No.: 04 - 022 - B
Dear Brian,
On March 2, 2005, we submitted to the City of Tigard, Building Division, four
(4) sets of plans and their respective Permit Applications, for the above
listed building sites. These plans sets contain a hand - written note stating:
"Plans Utilize "Alternated Construction Method ": "2005 Oregon Residential
Specialty Code "." Outlined below is a little more information, on the intent
of this statement.
1. The current Oregon One- and -Two Family Dwelling Specialty Code, Section
R104.11, allows the approval of alternate materials, design and method
of construction. We are requesting that these buildings be reviewed
under the Code provisions of the "2005 Oregon Residential Specialty
Code" (2003 IRC) which has been approved and will be effective April 1,
2005.
2. The provisions of 2005 ORSC enable us to design, permit and construct
these buildings in a fashion similar to the current Oregon "Rowhouse
Construction" Interpretive Ruling No. 01 -010.
3. Each of these building will be constructed with 2 -hour fire separation
walls. This construction method also allows the buildings to be
structurally dependent (2003 IRC R317.2.1, Exception #5) as presented in
our design calculations. The detail 2 -hour separation walls are the
same these utilized for the current rowhouse construction method
(drawing sheets D3 and D4).
4. We intend to design the buildings per the "Townhouse" definition in
Chapter 2, 2003 IRC /2005 ORSC. As these buildings are townhouses
"condominiums" neither the provisions of Appendix "N" or "0" are
applicable.
Ashbrook Condominiums Page 2 of 2
Building Design Review
JOB No.: 04 - 022 - B
5. Per Section R317.2, "Exception "....the common 2 -hour wall will not have
plumbing, mechanical or venting within the wall cavity.
6. The common walls extend from the foundation to the underside of the roof
construction. This framing also contains the 2 -hour separation wall
construction
In conclusion, our request to use the 2005 ORSc was made considering that the
actual "approval" of the requested permits would not be issued until after
April 1, 2005 when the referenced Code would be adopted. We are just trying
to be ahead of the design curve with the new Code.
We hope this satisfactorily addresses your questions and clarified the Code
applications selected for these buildings. Please contact us if you have
further questions.
Sincerely,
J Engineering, Inc.
Kevin N. Clemo, P.E.
President
Encl.
i . ti
04 /0
CONDOMINIUM. Condominiums not built as [B-} DECORATIVE GLASS. (No Change to the
townhouses or row- houses see Appendix N. text)
CONFINED SPACE. (No Change) DESIGN PROFESSIONAL. (No Change)
-[B} CONSTRUCTION DOCUMENTS. (No ! -. _ _ ! ' _ ! _ _ . - • • .
•a
Change to the text) pipeline measured along the center line of the pipe
and fittings.
• . • •
\ • . _..
jingle trap. "diameter" is the nominal diameter as designated
... ' .... .. [-B} DIAPHRAGM. (No Change to the text)
- "
-0 • ' ' " ° ` DILUTION AIR. (No Change)
• s .: - DIRECT -VENT APPLIANCE. (No Change)
CONTROL, LIMIT. (No Change) DRAFT. (No Change)
CONTROL, PRIMARY SAFETY. (No Change) Induced draft. (No Change)
CONVECTOR. (No Change) Natural draft. (No Change)
fB•} CORROSION RESISTANCE. (No Change DRAFT HOOD. (No Change)
to the text) DRAFT REGULATOR. (No Change)
{B} COURT. (No Change to the text) [$} DRAFT STOP. (No Change to the text)
CRIPPLE WALL. ^ fr ed wall e..tendin.-
fie: A framed stud wall that is less than 96 !..• • • - - - - • ' • -
• a a
inches (2438 mm) in height extending from the to provide connections in the drainage system that
top of a concrete or masonry foundation to the have provisions for establishing the desired slope
underside of floor framing for the lowest occupied in the system. These fittings are made from a
floor level or from the top of a daylight basement - - - - • ' - - -
concrete or masonry foundation wall to the - • .: • a :. : - - • -
underside of the framing above. c •
CROSS CONNECTION. Any connection DUCT SYSTEM. (No Change)
rtiv --vc icr b _ • . .
in which the joints arc made with recessed and
DALLE GLASS. (No Change)
DAMPER, VOLUME. (No Change) _
• DEAD END. A branch leading from a DWV degrees) to provide for proper slope-in-otherwise
system terminating at a developed length of 2 feet rigid connections. -
(610 mm)or more. Dead ends shall be prohibited
6.-. . - _ _ _
except as an approved part of a rough in for future -
eenneetienr - - - • 'J -
[$} DEAD LOADS. (No Change to the text) construction using recessed drainage fittings to
[-B4 DECK. (No Change to the text) correspond to the types of piping.
15
•
DEFINITIONS
I SMOKE - DEVELOPED RATING A numerical index indi- STRUCTURE. That which is built or constructed. 1
cating the relative density of smoke produced by burning as SUMP. A tank or pit that receives sewage or waste, located be
signed to a material tested in accordance with ASTM E 84. low the normal grade of the gravity system and that must be
SOIL STACK OR PIPE. A pipe that conveys sewage contain- emptied by mechanical means.
ing fecal material. SUMP PUMP. A pump installed to empty a sump. These
SOLAR HEAT GAIN COEFFICIENT (SHGC). The solar pumps are used for removing storm water only. The pump is se-
heat gain through a fenestration or glazing assembly relative to lected for the specific head and volume of the load and is usual -
the incident solar radiation (Btu/h • ft2 - °F). ly operated by level controllers.
SOLID MASONRY. Load - bearing or nonload- bearing SUNROOM ADDITION. A one -story structure added to an
construction using masonry units where the net cross - sectional existing dwelling with a glazing area in excess of 40 percent of
area of each unit in any plane parallel to the bearing surface is the gross area of the structure's exterior walls and roof.
not less than 75 percent of its gross cross-sectional area. Solid SUPPLY AIR. Air delivered to a conditioned space through
masonry units shall conform to ASTM C 55, C 62, C 73, C 145 ducts or plenums from the heat exchanger of a heating, cooling
or C 216. or ventilating system.
STACK. Any main vertical DWV line, including offsets, that SUPPORTS. Devices for supporting, hanging and securing
extends one or more stories as directly as possible to its vent ter pipes, fixtures and equipment.
minal.
SWEEP. A drainage fitting designed to provide a change in Di-
[B] STACK BOND. The placement of masonry units in a bond rection of a drain pipe of less than the angle specified by the
pattern is such that head joints in successive courses are verti- amount necessary to establish the desired slope of the line.
cally aligned. For the purpose of this code, requirements for Sweeps provide a longer turning radius than bends and a less
stack bond shall apply to all masonry laid in other than running turbulent flow pattern (see "Bend" and "Elbow ").
bond.
TEMPERATURE - AND PRESSURE - RELIEF (T AND P)
STACK VENT. The extension of soil or waste stack above the VALVE. A combination relief valve designed to function as
highest horizontal drain connected. both a temperature- relief and pressure - relief valve.
STACK VENTING A method of venting a fixture or fixtures TEMPERATURE - RELIEF VALVE. A temperature-actu-
through the soil or waste stack without individual fixture vents. ated valve designed to discharge automatically at the tempera -
STANDARD TRUSS. Any construction that does not permit ture at which it is set. .
the roof /ceiling insulation to achieve the required R -value over THERMAL ISOLATION. A separation of conditioned
the exterior walls. spaces, between a sunroom addition and a dwelling unit, con -
STATIONARY FUEL CELL POWER PLANT. A self -con sisting of existing or new wall(s), doors, and /or windows.
tained package or factory- matched packages which constitute THERMAL RESISTANCE, R- VALUE. The inverse of the
an automatically- operated assembly of integrated systems for time rate of heat flow through a body from one of its bounding
generating useful electrical energy and recoverable thermal en- surfaces to the other for a unit temperature difference between
ergy that is permanently connected and fixed in place. the two surfaces, under. steady state conditions, per unit area
STORM SEWER, DRAIN. A pipe used for conveying rain (h • ftz °F/Btu). 1 water, surface water, subsurface water and similar liquid waste. THERMAL TRANSMITTANCE, U- FACTOR. The coeffi-
cient of heat transmission (air to air) through a building enve-
[B] STORY. That portion of a building included between the lope component or assembly, equal to the time rate of heat flow
upper surface of a floor and the upper surface of the floor or per unit area and unit temperature difference between the warm
roof next above. side and cold side air films (Btu/h • ft • 'F).
[B] STORY ABOVE GRADE. Any story having its finished TOWNHOUSE. A single - family dwelling unit constructed in
floor surface entirely above grade, except that a basement shall a group of three or more attached units in which each unit ex
be considered as a story above grade where the finished surface tends from foundation to roof and with open space on at least
of the floor above the basement is: two sides.
1. More than 6 feet (1829 mm) above grade plane.
2. More than 6 feet (1829 mm) above the finished ground TRAP. A fitting, either separate or built into a fixture, that pro -
level for more than 50 percent of the total building pe vides a liquid seal to prevent the emission of sewer gases with -
rimeter. out materially affecting the flow of sewage or waste water
through it.
3. More than 12 feet (3658 mm) above the finished ground
level at any point. TRAP ARM. That portion of a fixture drain between a trap
weir and the vent fitting.
STRUCTURAL. INSULATED PANELS (SIPS). Factory
fabricated panels of solid core insulation with structural skins TRAP PRIMER. A device or system of piping to maintain a
of oriented strand board (OSB) or plywood. water seal in a trap, typically installed where infrequent use of
2003 INTERNATIONAL RESIDENTIAL CODEe 19