HomeMy WebLinkAboutSprinkler Plan Review - MIS Letters / Memos - 2/19/1998 International Conference of Building Officials
REGIONAL OFFICE: 2122-112th AVENUE, N.E.,SUITE B-300 • BELLEVUE,WASHINGTON 98004 • (206)451-9541
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BOARD OF DIRECTORS OFFICES OF
CHAIRMAN February 19, 1998 JERRY J.BARBERA.P.E.
SENIOR MANAGER
THOMAS R.THOMPSON,C.B.O.
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BRBUILDINGlOLORADO Plan Review No.: 7928 SENIOR ENGINEER
FIRST VICE-CHAIRMAN Project: Bisyak Office Building FAX(206)637-8939
�STA�NVELOPMEN• Address: E. 24160 N H 3/Belfair
llbarber®Ix.netcom.com
SERVICESPNIX,ARZONA SPRINKLER PLAN REVIEW
SECOND VICE-CHAIRMAN
KENNETH O.LARSEN,C.B.O. Dave Salzer
DIRECTOR OF BUILDING AND HOUSING
CHULA VISTA,CAUFORNIA Fire Marshal
IMMEDIATE PAST CHAIRMAN Mason County
RON PERKEREWKZ,C.B.O.
DIRECTOR OF COMMUNITY P.O. Box 186
DEVELOPMENT
COUNTY OFKITSAP Shelton, WA 98584
PORT ORCHARD,WASHINGTON
THOMAS C.ANDERSON
BUILDING OFFICIAL Dear Mr. Salzer:
HOPKINS,MINNESOTA
FRED B.BUILDING OFFICIAL We have reviewed the automatic sprinkler system plans and calculations submitted by
BURLINGAME,CAUFORNIA Trinity Fire Prevention, Inc. and stamped/sealed by Keith Hillstrom for the above named
MANAGER,BUILDINGR AND CODE facility. The plan set consists of sheets 1 through 2 of 2. The system has been designed to
ENFORCENT
VANCOUVER.WAS ME
provide a density of.10/3,000. The plans appear to conform with the requirements of the
ROGER R.EVANS,C.B.O. Uniform Building Code Standard 9-1 and NFPA 13 1991 when the following items are
DIRECTOR OF BUILDING SERVICES
SALT LAKE CITY,UTAH corrected. Our comments are:
FRED HERMAN
CHIEFBUILDINGOFFICIAL The type AH hangers noted for use on the Ist floor branch lines should be U.L.
PALO ALTO,CAUFORNIA yp g
DAN R.NICKLE,C.B.O. listed or F.M. approved and meet the truss manufacturers approval.
CODES ADMINISTRATOR
LAKEWOOD,COLORADO
RONALDL.NIENABER,C.B.O. Verification should be made that no handling or storage of combustible materials
DIRECTOR OF INSPECTIONS will take canopies.
lace below uns rinklered exterior
MAPLE GROVE,MINNESOTA p p
JOHN E.PIERCE,C.B.O.
BUILDING OFFICIAL '' Clarification and details should be provided as to the location and depth of all
PLANO,TEXAS
LARRY W.RICHARDS,C.B.O. areas containing composite wood joists. All areas with composite wood joists 16" or
BUILDING SAFETY DIRECTOR greater in depth are required to be protected in accordance with UBC Standard 9-1 4-
GLENDALE,ARIZONA 4.1.4.2 Exception 93. Protection shall be provided by using one or more of the following
RAIMAR W.SCHULLER,C.B.O.
DIRECTOR,BUILDING DEPARTMENT methods:
NEWPORT BEACH,CALIFORNIA a. Provide a sprinkler in each joist channel. The distance between sprinklers
RON K.WATTS,C.B.O.
CHIEF OF BUILDING INSPECTIONS within the joist channel shall not exceed 15 feet.
i,
BUILDING SAFETY DIVISION
ANCHORAGE,ALASKA f
DONALD L.WOLFF,P.E. b. Protect the composite wood joist with 5/8-inch Type X gypsum wallboard
DEPUTY DIRECTOR OF NGEL WORKS attached directlyto the bottom of the composite wood joist. Joist channels `
COUNTY OF LOS ANGELES, p
ALHAMBRA,CAUFORNIA shall be fire-stopped the full depth of the joist with a material equivalent to
PRESIDENT the web construction so that the volume of individual channels do not
JON S.TRAW.P.E. exceed 160 cubic feet.
Completely fill the channel with non-combustible insulation. The insulation shall
be secured to prevent the insulation from falling. Joist channels shall be fire-stopped the
Home Page:http:/Avww.icbo.org Main Office: 5360 Workman Mill Road 0 Whittier,California 90601-2298 0 (310)699-0541
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Plan Review No.: 7928
Dave Salzer, Mason County
February 19, 1998
Page 2
full depth of the joist with a material equivalent to the web construction so that the volume of individual
channels does not exceed 160 cubic feet.
Seismic bracing connected to light structural members should be approved by structural engineer.
5 Details should be provided to show how vertical and lateral sway braces are connected to the
structure and the type and size of connection device. In accordance with U.B.C. 9-1 (NFPA 13 , 1991)
both lateral and longitudinal sway braces shall be sized and fastened to the structure such that the horizontal
loads assigned to the braces in Table 4-5.4.3.5.1(a)do not exceed the allowable loads on the braces as
shown in Table 4-5.4.3.5.1(b)and the allowable loads on fasteners as shown in Table 4-5.4.3.5.1(c). The
structural component shall be capable of carrying the added applied loads. Calculations of the loads for
sizing, and details of the sway bracing are required to be included in the submittal per U.B.C. 9-1 6-1.1.1
(mm).
In accordance with NFPA 13 (1991)7-2.1 verification should be made that the water flow test
utilized for these hydraulic calculations has taken into account seasonal fluctuations and peak demands that
could adversely affect the system performance. The flow test utilized in these hydraulic calculations is a
static pressure of 52 PSI with 740 gallons flowing at 25 PSI. The date that this flow test was taken is not
noted on the plans as is required by NFPA 13 (1991). The supporting hydraulic calculations have left an
approximate 4 PSI safety margin below the water flow test data. Verification should be made with the
Mason County Fire Marshal that a greater safety margin should not be utilized to insure system
performance during periods of low water and high usage.
In accordance with NFPA 24 the galvanized piping supplying the Fire Department Connection
should be coated and wrapped after field assembly.
Our headquarters accounting department in Whittier, California will send you an invoice for this plan
reviewing service based on 2 hours of professional time ($150).
Per your request, we are returning all copies of check prints to the designer. The designer should
revise the plans as advised above, include a separate response sheet, and return the revised plans to you
for a final check.
Sincerely,
i
aig Mt tevenson
Plan Review Services
�-Seaattle Conference Services
cc: Ross Bell,Trinity Fire Protection w/Enclosure