Plans • (3, a-00 7 -Oa 57 5
15350 S.W. Sequoia Pkwy., Suite 300
PACTRUST Portland, Oregon 97224
Pacific Realty Associates, L.P. 503/624 -6300 Facsimile: 503/624 -7755
•
. MEMORANDUM
Date: October 31, 2007
To: Dan Nelson
City of Tigard Building Department
For: IBC Code Analysis
Tigard Triangle Building
Portland, OR 97223
To facilitate future tenant improvement construction work, we have decided to do a code analysis for
the four story office building in this park. This code analysis is to demonstrate how this building, which
was built under the UBC as a type II -1 Hr., will figure as an IBC type II -B.
Chapter 3 — Use and Occupancy Classification; the building will be figured as a B occupancy, with
subsidiary A -3 and S -2 uses. The A -3 by size and occupancy fits into the B group.
Chapter 4 — Special Detailed Requirements based on Use and Occupancy Classification —N /A
Chapter 5 — General Building Heights and Areas; per table 503 basic area for Type II -B, B occupancy
is 23,000 SF per floor, and four stores tall. Existing building is four -story with a lower level floor plate
of 19,929 SF and 22,937 SF for the levels two and three, and 22,088 SF on the upper level — totaling
approximately 87,890 SF. 22,937 SF in four stories is less than or equal to 23,000 SF in four stories;
allowing non - separated uses as is (no yard separations need to be figured).
Chapter 6 —Types of Construction; Type II -B.
Chapter 7 — Fire - resistance Rated Construction; N/A due to type and proximity to other buildings other
than shaft (stair towers), which can be 1 -Hr. (in lieu of 2 -Hr.) due to being fully sprinklered.
Chapter 8 — Interior Finishes — N/A
Chapter 9 — Fire Protection Systems; fully sprinklered up and down. Building has three stories above
the ground floor with an occupant load of roughly 690 (23,000/100 "3). Fire Alarm is required per
907.2.2. Existing fire alarm system in subject space is being supplemented / upgraded to meet current
IBC requirements.
Chapter 10 — Means of Egress, all spaces of a size and occupancy are served by minimum of two
distinct exit pathways emptying into the corridor system. Building exit system is served by two
required exit stair towers + non - required central stair which opens between 1 and 2 and 2 and 3 when
hold -opens close (triggered off of sprinkler system) —this also encloses elevator lobby. Corridor
system in occupancy groups A, B, F and S where present need not be rated due to fire sprinkler
system.
Chapter 11 — Accessibility; building complies as constructed.
Chapter 12 — 28; N/A
Chapter 29 — Minimum Plumbing Fixtures; 88,0001200 = 440 occupants / 2 = 220 occupants each sex
= 7 T + 4 L required each sex.. 16 T + 8 L (women), 8 T + 8 U + 8 L (men) provided. Pair accessible
DF each floor. Meets or exceeds code.
Chapter 30 — 34; N/A
End of Memorandum