Plans 630 Chapter 7• Design ApprFcl E C 0 P Y
N6-A sf �
7- 9.8.1t Columns within Storage Racks of Class I through Class IV and Plastic Commodi-
ties. Where sprinkler protection of building columns within the rack structure or vertical rack
members supporting the building are required in lieu of fireproofing, sprinkler protection in
• accordance with one of the following shall be provided:
(1) Sidewall sprinklers at the 15 -ft (4.6 -m) elevation, pointed toward one side of the steel
column
(2) Provision of ceiling sprinkler density for a minimum of 2000 ft (186 m with 165 °F
(74 °C) or 286 ° F (141 °C) rated sprinklers as shown in Table 7 -9.8.1 for storage heights
above 15 ft (4.6 m), up to and including 20 ft (6.1 m)
(3) Provision of large drop or ESFR ceiling sprinkler protection in accordance with 7 -9.4 and
7 -9.5, respectively.
I ' •
Table 7 -9.8.1 Ceiling Sprinkler Densities for Protection
of Steel Building Columns
Aisle Width
'4 ft (1.2 m) 8 ft (2.4 m)
Commodity Class gpm/ft mm/min
I 0.37 15.1
j II 0.44 17.9
III 0.49 20.0
IV and plastics 0.68 27.7
Note: For aisle widths of 4 ft to 8 ft (1.2 m to 2.4 m), a direct linear
interpolation between densities can be made.
As indicated by Formal Interpretation 75 -4. which was originally issued for NFPA
231C. additional protection of steel columns is only required where the columns are
located within the rack structure.
Formal Interpretation 75-4
Reference: 7 9.8.1(1)
r
Question: Does 7- 9.8.1(1) apply when columns occur adjacent to single row racks (whether
at building wall or otherwise)?
Answer: No.
Issue Edition: 1975 of NFPA 231C
• Reference: 3- 2.3(b)
Date: November 1979
'Reprinted to correct error: January 1989
1999 Automatic Sprinkler Systems Handbook
FILE COPY
)F STORAGE
STORAGE C
or Class A fires with a minimum rating of 2A and charged and 5-2.3t For sprinklered buildings with rack storage of over 15 ft
mended inside hose lines, where provided, shall be located in (4.6 m) in height and ceiling sprinklers only installed, structural
he working area. A fire watch shall be maintained during steel components shall have a minimum 1 -hour fire resistance
hese operations and for not Tess than 30 minutes following rating.
:omptetion of open -flame operation.
Exception: Where the sprinkler installation meets the requirements of
c-4.4 Waste Disposal. Approved containers for rubbish and 7 -9.8 of NFPA 13.
ether trash materials shall be provided. Rubbish, trash, and
ether waste material shall be disposed of at regular intervals. 5-3 Storage Arrangement.
4.5 Smoking. Smoking shall be strictly prohibited. "No 5-3.1* Rack Structure. Rack configurations shall be of a
; moking" signs shall be posted in prohibited areas. generally accepted arrangement.
?xception: Smoking shall be permitted in locations prominently designated
a smoking areas. 5-3.2* Rack Loading. Racks shall not be loaded beyond their
design capacity.
4.6* Maintenance and Inspection.
5-3.3* Aisle Widths.
-4.6.1 Fire walls, fire doors, and floors shall be maintained in
ood repair at all times. 5 -3.3.1 Aisle widths and depth of racks shall be determined by
- 4.6.2* The sprinkler system and the water supplies shall be material- handling methods. The width of aisles shall be consid-
ered in the design of the protection system. (See Section 7-4 of
ispected, tested, and maintained in accordance with NFPA 25, NFPA 13)
tandard for the Inspection, Testing and Maintenance of Water -Based
ire Protection Systems. 5-3.3.2 This standard contemplates aisle widths maintained
-4.7 Refrigeration Systems. Refrigeration systems, if used, I either by fixed rack structures or control in placement of por-
iall conform to ASHRAE 15, Safety Code for Mechanical Refrigeration. table racks. Any decrease in aisle width shall require a review
of the adequacy of the protection system.
Chapter 4 Palletized, Solid Pile, Bin Box, and 5 Fire Protection — General.
On - Shelf Storage 5-4.1 High - Expansion Foam.
.1 Scope and Application. This chapter shall apply to the 5 Where high - expansion foam systems are installed,
tdoor storage of materials that represent the broad range of they shall be in accordance with NFPA 1IA, Standard for
)mbustibles, including plastics, that are stored palletized, Medium- and High - Expansion Foam Systems, and they shall be
rlid- piled, in bin boxes, or on shelves. automatic in operation.
xception No. 1: Rubber tires shall be protected in accordance with Exception: Where modified by Chapter 5.
hapter 6.
xcepti 5 - 4.1.2 Where high -expansion foam systems are used in com-
on No. 2: Scrap tires shall be protected in accordance with
rcepti 11. bination with ceiling sprinklers, in -rack sprinklers shall not be
required.
eception No. 3: Baled cotton shall be protected in accordance with
hapter 8. 5 Detectors shall be listed and shall be installed in one
rception No. 4: Roll paper shall be protected in accordance with
of the following configurations:
hapter 7.
(1) At the ceiling only where installed at one-half listed linear
2* Aisles. spacing (e.g., 15 ft x 15 ft rather than at 30 ft x 30 ft)
Exception: Ceiling detectors alone shall not be used where roof —ceiling
clearance from the top of storage exceeds 10 fl (3.1 m) or the height of
Chapter 5 Rack Storage storage exceeds 25 Jt (7.6 m).
(2) At the ceiling at listed spacing and on racks at alternate levels
lt Application and Scope. This chapter shall apply to stor- (3) Where listed for rack storage installation and installed in
:e of materials representing the broad range of commodities accordance with ceiling detector listing to provide response
)red on racks. within 1 minute after ignition using an ignition source
xep;ion: Protection of rubber tires stored on racks shall be protected equivalent to that used in a rack storage testing program
accordance with Chapter 6.,
5-4.2 High - Expansion Foam Submergence.
1 Building Construction.
5 -4.2.1 The following requirements shall apply to storage of
2.lt With sprinkler systems installed in accordance with Class 1, 11, III, and IV commodities as defined in NFPA 13 up
ctton 7-4 of NFPA 13, Standard for the Installation of Sprinkler to and including 25 ft (7.6 m) in height:
stems, fire protection of roof steel shall not be required.
(1) * Where high -expansion foam systems are used without
!.2t Where ceiling sprinklers and sprinklers on racks are sprinklers, the maximum submergence time shall be 5
;tailed in accordance with Section 7-4 of NFPA 13, fire protection minutes for Class I, II, or III commodities and 4 minutes
steel building columns shall not be required. for Class IV commodities.
cel ,01 — o - o
BY G. OHANIAN RACK DESIGN & ENGINEERING CO. / -3o M Lst
5 -9 -05 412 WEST BROADWAY, SUITE #204 SHEET N0. 1
DATE.
SUBJECT 0LENDALE, CA. 91204 JOB NO. RD -9791
• .
a TEL:(818)240 -3810 FAX:(818)240 -3813
STRUCTURAL CALCULATIONS OF STORAGE
RACKS FOR:
CROWN COMMERCIAL SALES
12230 SE MAIN
TIGARD, OR. 97223
PER IBC 2003 EDITION
STORAGE RACKS CAPACITY:
3000 # / LEVEL OVER 4 BEAMS .
18445PE
OREGON
CALCS. 1 THRU 4 ,q � 14
K N � P+
DRAWINGS: RD -9791 EXP. 12 -31 -06
•
BY G. OHANIAN RACK DESIGN & ENGINEERING CO.
DATE». 5 -9 -05 412 WEST BROADWAY, SUITE #204 SHEET NO. 2
E
OLENDALE, OA. 91204 JOB NO.. RD -9791
SUBJECT t, TEL:(818)240 -3810 FAX:(818)240 -3813
120" 48" 48" 48"
r T fi r i r
2 4- \ \
•
I I+ 4
B
• EAM
v ' ' ' ' 3000 # OVER 4 BEAMS
;. �. �..,} ; •. ._._ �:} +25% IMPACT LOAD
TYPE "A" SIDE VIEW 1200 #/ BEAM
r 144" 1 i 48" I 48" I 48" i
1 1 4
I =1.73
I 1 { v \ \ N. x •___ • x S =.81
t =0.07" Fy =50 KSI.
S d
. I 2 /4"
• I ] // //
M= 144 "x1.2 = 22 K
I 1 $ 22"K=
/\
S R = 30 .72<.73
0 = 5xWxL = .77" < 144 = .80"
TYPE "8" SIDE VIEW 384x1, xE 180
SEISMIC DESIGN
V= 1 i xS XWXI IBC 2003 LONGIT. SELSMIC
R -4 .12K 2.K
L _ -
1 =1 M
.09K 2 4•K
S =.5
0
W= D.L.+ 2 L
. L. v
3 .06K 4 _ K 5
LOAD PER COLUMN(
TYPE "A" ° v
P= 4x3 K = 4 K .03K 5 • K 11 •K
3 COL
C
W=.1 +- 2 x4 3 x 4 LL =2.8K N
V= 1 . x 5 4 ' = . K BASE SHEAR PER COL. 3 K 11
TYPE "B"
P= = 5 K V= .36 K M co: 7 "K
3 coL
BY G. OHANIAN RACK DESIGN & ENGINEERING CO.
5 -9 -05 412 WEST BROADWAY, SUITE #204 SHEET NO 3
DATE"
dLENDALE, CA. 91204 JOB NO. RD -9791 .
SUBJECT, ,( 6 TEL:(818)240 -3810 FAX:(818)240 -3813
COLUMN ANALYSIS
3 " X < = Z = 65 Fe= ti = 6 8
_ I FF y =50 KSt rx 1.2 (1) 2
r
A =.62
KI _ 44 _ 40 Fy Ksi
S =.68 r y 1.1 Fn =Fy(1— 4F8 )= 40
r., x- - x
r =1.2 _
P
t =.o�' p F xA = 25 K
, J r =1.1 Max =Sx •Fb = K n= n
P P"
° 1 =13
COMBINED STRESS RATIO
.11+ = 13 + 20 = . <1.33
Pa ax
4.1 K
BASE PLATE $ 11"1(
11—(2.8x3") = K r
ANCH. TENSION =
6"
.43
ANCHOR SHEAR = •2 = .15 K 8 "x5 "x3/8"
BASE PLATE
(2) -1/2 "0 HILTI KWIK BOLT 3
ESR -1385 OR EQUAL. (NO INSPECTION REQ'D) !! '.' !! .. M
DESIGNED FOR 1/2 STRESS
6"
MOMENT AT BEAM CONNECTION
5 °K 9 4 p : . :
�
t/8 r TYP
I 1. len ",
8 -K I �
1, ii
, , STD. WEDGELOCK CONNECTION
TAB AREA =.14 Fy =62 KSI
1 'K Va TAB = .14x.4x62 =3.5 K
°
Ma = 3.5 "x1.33 =14.0 K
CONN.
BY G. OHANIAN RACK DESIGN & ENGINEERING CO.
SHEET NO. 4
DATE . 5 -9 -05 412 WEST BROADWAY, SUITE #204 RD -9791
SUBJECT dLENDALE, CA. 91204 JOB NO.
• 1 _ • r TEL:(818)240 -3810 FAX:(818)240 -3813
TRANSVERSE SEISMIC
(OVERTURNING) TOP LEVEL LOADING
M = .3 Kx4 COL 92 "x.5x 1 . 1 5 = 132 M OT = . Kx4 x192"= 61 K
MR = 2.8 K4x72" = 806 - K M R =.8 Kx4x72 "= 230 "K
NO UPLIFT
;W•
1 6GA
"X" BRACING 1/8 "1" m
2'/
T = .3x2 x 60 = .75 K
co �cot- 48 �� 1 1 6GA Y
T = 2.25 "x.06 "x36x.6 = 2.9 K SEC. A — A �
- 1/8 r1-
T P 1/8 1"
CHECK WELDS
1/8" WELD 1.5" LONG EACH SIDE (3" TOTAL)
SEC. B —
3x.125x.707x70x.3 = 5.7
CHECK SLAB
6100# 51 00 00 = 5.1 °' 5.1 x144=734
6" CONCRETE SLAB •/ 3 =27"
2000 PSI. CONC.
1000 PSF. SOIL
ed ..
M= ( ) 2 x12 = 1500
s.
• ° � Qd. 'd • ..
7.5" 6" s = 12x 2 = 72
•
13.5"
1500 = 21 < 1.6 20 =72
27" 72
•