HomeMy WebLinkAboutHOAG_GENERATOR_BUILDINGi
II
1
II
II
II II II I I
*NEW FILE*
1
II
1
i
II
HOAG_GENERATOR_BUILDING
Telephone:
-110
COMMERCIAL/INDUSTRIAL
(714) 644-3200
ZONING CORRECTION.-
Plan Check No: 69/1
y Genia Garcia, Associate Planner
By:Marc MrQ� Aqsociate Planner
Date: 1/ 1/97
Districting
Corrections
Map No.
Required:
Legal Description: Lot Block
Address:
By:Christv Teague, Associate Planner
By:
Land Use Element Page No.
Section
Tract
Resubdivision required to combine lots or portions of lots when construction or
alterations are in excess of $20,000.
Covenant
document
required. Please have owner's
and return to me.
Lot Size
Zone
Proposed Use
Required Setbacks
Front /0
Rear
Right Side
Left Side
signature notarized on the attached
FAR WORKSHEET_
Lot area (site area sq.ft.): sq.ft.
Base Development Allocation (BDA): Comm sq.ft.
[0.5 x site area sq.ft., unless otherwise specified in Land Use Element]
FAR permitted, without variance: (A) comet res pkq
Square footage permitted: comm res pkq eq.ft.
[(A) x site area sq.ft.]
Maximum FAR allowed with variance: (B) comm res pkq
Maximum square footage allowed: Comm res sq.ft.
[(B) x site area sq.ft.]
•
PROPOSED DEVELOPMENT:
(C) Base FAR use sq.ft. sq.ft.
(D) Reduced FAR use sq.ft. sq.ft.
(E) Maximum FAR use sq.ft. sq.ft.
(F) TOTAL SQ.FT. [C+D+E] - sq.ft.
PROPOSED FAR: [ F + site area sq.ft. ]
PROPOSED WEIGHTED DEVELOPMENT:
FAR Use Category Weighting
(G) (H)
sq.ft. Base X
sq.ft. Reduced X
':aximum X
I, WP I :rTED :;Q.IP.:. (May not e,rc scd l .)
7
Factor
Weighted Sq.Ft.
( G x H )
1.00 sq.ft.
1.67 sq.ft.
0.50 sq.ft.
Pro•"idc tissue ove..lay of c 1culations i.1 verify provided square footage.
Required Pelrkiuq
Proposed parking (Indicate number of stalls provided)
Total On -Site Parking
Standard Compact
In -lieu Parking
flimension building .ig
of height412
i
L
as measur-d fr•mnatural g
to ape ge and maximal._
CSR)U
Show natural Me line on all elevations
—Jr
Show all rooftop mechanical equipment and dimension from grade directly below.
Indicate location of trash containers on situ plan.
&L. Number of Stories
Floor Plan fully dimensioned showing all room uses.
•
vl_ Plot Plan fully dimensioned showing location of all buildings,
relation to the property line.
Fair Share Contribution
fences, etc. in
La San Joaquin Hills Transportation Corridor Fee
SPECIAL APPROVAL REOUIRED THROUGH:
Please indicate any discretionary approval numbers on the plans and incorporate
the attached; excerpt of minutes and list of findings and
conditions into the blueline drawings
approval letter into the blueline drawings
Modifications Committee: Indicate Approval No. on Bluetines
Modification required for
plannina Commission/City Councils
Use Permits No.
Variance: No.
Resubdivision/Tracts No.
Site Plan Reviews No.
Amendm=. a No. e
Other
REMARKS:
u
Easement/Encroachment Permi
Subdivision Engineer
Traffic Engineer
Approval of Landscape Plans
Euildina Department:
Grading Engineer
parks Department:
Approval of Landscape Plans
Coastal Development
Approval In Concept
(Note: File 3 sets
Coastal Development
Waiver/Exemption:
Permits:
(AIC) No.
of plans: site, floor, and elevations)
Permits No.
Effective Dates
No.
Effective d
tes
/ / NN non
itivinnn•'1',1../
litovixna
NOTE: It is the responsibility of the applicant to cir=1.st4 ttuir plans t*d
obtain the necessary approval* fro the uepartmeent000ndokClH^ 0VO.t f you
have questions regarding your application, please
44-
3200.
FORKS\COMM-ZON.COR
Rev. 2/94
• i
DATE Ur -/ 7
0 MAYOR ❑ CITY COUNCIL
0 CITY MANAGER ❑ FIRE
0 DEPUTY CITY MGR E GENERAL SERVICES
❑ ATTORNEY ❑ LIBRARY
0 BUILDING 0 MARINE
❑ CFiY CLERK 0 PARKS & REC.
0 FINANCE - ADMIN. 0 PERSONNEL
0 ACCOUNTING 0 PLANNING
0 DATA PROCESSING 0 POLICE
0 DUPLICATING 0 PUBLIC WORKS
0 PAYROLL E TRAFFIC
PURCHASING 0 UTILITIES
0 REVENUE 0 TELECOMM.
FOR 0 ACTION & DISPOSITION
0 FILE
0 INFORMATION
REVIEW & COMMENT
RETURN
FROM:
x 3Z01
•
ATTENTION:
Gina Garcia
•
TRANSMITTAL
2220 UNIVERSITY DRIVE, SUITE 200
NEWPORT BEACH, CALIFORNIA 92660
714 574 1325 FAX 714 574 13b8
ARCHITECTURE AND INTERIOR DESIGN
1
RECEIVED B
PLANNING DEPART ENT
CITY OF NEWPORT BEACH
MAR 27 1997 PM
710110111112111213141516
4a
TAYLOR
' 8 ASSOCIATRS
ARCHITECTS
TO DATE.
CITY OF NEWPORT BEACH - PLANNING March 25, 1997 O
1 PROJECT NUMBER. 1
3300 Newport Boulevard - 1020.10
PROJECT
Newport Beach, CA 92663 - HOAG MEMORIAL HOSPITAL PRES.
EMERGENCY GENERATOR BUILDING
WE ARE SENDING YOU VIA Y THE FOLLOWING ITEMS:
U.S. Mail
PRINTS - ORIGINALS •
OTHER (SEE DESCRIPTION BELOW)
NO. OF ITEMS
DATE DESCRIPTION
12/5/95 Acoustical Report from McKay, Conant, Brook.
•
THESE ARE TRANSMITTED AS CHECKED BELOW:
•
FOR APPROVAL X FOR YOUR USE _ AS REQUESTED FOR REVIEW AND COMMENT
REMARKS:
Gina:
Here is Et copy'of the Acoustical Report for your files, as requested.
•
Thanks.
COPY To.File
FROM: Gary Simmons
•
Me KAY
CONANT
BROOK INC
Consultants in Acoustics and Media Systems
Gary E. Simmons, Architect
Taylor & Associates, Architects
2220 University Drive, Suite 200
Newport Beach, CA 92660
Ronald L McKay
David A Conant
Rollins Brook
RECEIVED 6 December 1995
DEC 0 7 1995
TAYLOR & ASSOC. ARCHITECTS
Subject: Hoag Hospital Emergency Generator Replacement: Preliminary Noise -
Control Recommendations for Inlet, Discharge and Exhaust Openings.
Dear Gary:
Further to our recent telephone discussions, we are pleased to enclose our preliminary
recommendations for noise control for the generator -building inlets and outlets. We would
comment as follows:
1. Design Noise Criterion
The design noise criterion defined in the Community Development Plan for this project
is 55dBA at any nearby property line, irrespective of the time of day.
Generator noise impacting the hospital tower is also of concern (in order that patients
are not unduly disturbed during generator testing). We recently visited the site and
measured levels of approximately 55dBA outside the facade of the hospital cower. It is
our opinion that 55dBA would be an appropriate design criterion to adopt for generator
noise incident on the exterior of the tower.
2. Discharge Shaft "Caps"
As discussed in our fax of 20 November 1995, we would strongly recommend that the
cops of the discharge shafts be "capped" as you suggested at our meeting. This
significantly reduces the silencer requirements (by directing noise away from sensitive
property lines), in addition to protecting the silencers from the elements (Detail 1,
enclosed, shows the general design intent).
3. Manufacturers' Noise Data
We received the following noise data for the proposed generators (Caterpillar 3516,
1750kW units) from your office on 30 October 1995:
Sound Pressure: Level. at Distance
Shown, dB re.'2 x 104:Pa.
Qatave BandCenter Frequency (Hz)
63 .
125
:250.'
' 500
. lk ..
.2k.
.4k
:: 8k•'
Caterpillar 3516: Exhaust @ 4.9 ft.
105
106
112
111
108
108
108
106
Mechanical @ 3.2 ft. (no fan)
100
102
98
99
101
99
95
90
5655 Lindero Canyon Road Suite 325 Westlake Village CA 91362 818 991 9300 Fax 818 991 2324
• •
HOAG Hospital Emergency Generators
5 December 1995
Page 2
M`KAY
CONANT
BROOK INC
We understand that the standard Caterpillar radiator/fan will be replaced by a Young
unit which will be exactly the same as those previously used in the Harbor UCLA .
project. Along with this Caterpillar data, we received the following noise daca for the
proposed Young fan/radiator unit:
Souad.Pressure Level at.25'•ft.•frbtn
Fan Ring Edge;. dB re.: Z x' 10's Pa.
Octave Band' Centex Frequency (fiz)
•63.
125
'250
500
1k'•
2k
44k
• 8k'
Young 7.75 ft. diameter,
55605 cfm fan, @ 1" w.g.
78
74
69
63
60
58
52
45
4. Mode of Operation & Testing
We understand that a maximum of four generators will be in operation at any one time,
and that the fifth generator will function only as a standby unit. If five generators run
together at any time, noise levels will increase by only 1dBA (one dBA).
5. CFM Figures
The standard Caterpillar unit with its factory -fitted radiator and fan is listed as having
an inlet airflow requirement of 81,000cfn per unit (plus 5724cfrn per unit for
combustion air ac the inlet only). We underscand, however, that when fitted with the
Young radiator units, each generator draws only 55605cfm (in addition to 5724cftn
combustion air), giving a total of 245,316cfrn inlet air for 4 units, and 55605cfm per
discharge shaft. For our analysis, we have assumed that the Young radiators/fans will
definitely be used in the design, since we understand this to be the case, and since this
option is acoustically far superior to using the Caterpillar radiator/fan option.
a. Inlet:
The proposed cross -sectional size of the bank of inlet silencers is 56 ft. x 7 fr.,
giving a face velocity of 630fpm with the Young radiators/fans.
b. Discharge:
Each discharge shaft has a proposed cross -sectional area of 100 sq. fc., thus giving
a face velocity of 560fpm with the Young radiators/fans.
HOAG Hospital Emergency Generators
5 December 1995
Page 3
6. Noise Control
M`KAY
CONANT
BROOK INC
Due to the extremely sensitive nature of this project, it is vitally important that
acoustically -inferior products are not substituted for those suggested below. Any
proposed substitutions should be submitted for our approval.
a. Inlet Duct Silencers
We recommend that the inlet silencer bank be constructed from silencers
equivalent to IAC type 5ES (see enclosed catalog cut). The published static
pressure drop figure for these silencers at a face velocity of 630fpm would be
approximately 0.07" w.g.
b. Discharge Duct Silencers
We recommend that a 10-foot silencer equivalent to IAC type 10L be installed
in each discharge shaft (see enclosed catalog cur and Detail 1). The catalog static
pressure drop figure for each of these silencers is approximately 0.05" w.g. ar a
face velocity of 560fptn.
c. Exhaust Muffler
We recommend an exhaust muffler equivalent to a 14" diameter -inlet Nelson
400. The "Maxim M-51" muffler originally proposed in your initial transmittal
would not be acoustically adequate.
d. Acoustical Lining
Inside the generator building, the walls and the underside of the roof should be
completely covered with 4"-chick acoustical lining equivalent co Schuller
Linacoustic R-300 (see catalog cur sent with our fax of 20 November 1995).
The inlet plenum between the room roof opening and the inlet silencers should
also be similarly lined, as should the discharge shafts. For the proposed location
of the lining, please see enclosed Detail 1. The lining opposite the radiator fan
at the bottom of each discharge shaft may be protected by a perforated metal
liner if this is required to stop tearing and erosion by the large incident airflow.
The liner should have a minimum 35% open area and should be no thicker than
20 gauge.
HOAG Hospital Emergency Generators
5 December 1995
Page 4
7. Building Construction
a. Walls and Roof
M`KAY
CONANT
BROOK INC
We would reiterate our recommendation that the walls and roof be constructed
from concrete with a minimum weight of 100 lb./ sq. ft.
b. Doors and Interior Walls and Windows
We will make recommendations for doors and interior walls and windows in due
course.
We crust that the above information is adequate for your current needs. We will calculate the
acoustical requirements for the items listed in section 7.b, above, and will forward our
recommendations within the next few days. If you have any questions in the meantime, please
do not hesitate to call.
Yours sincerely,
M`KAY CONANT BROOK INC
Matthew rooke, Ph.D.
Consultant
MB:sk
Enclosures
cc: Mr. Toshio Okajima, P.E. - J. L. Hengstler Associates
Mr. Russ Givens - R. E. Wall & Associates
GENERAT
GENERATOR PAD
SIMSC I2S
159wJ TD
(5'txnX 1
Al TA KZ
•
R .ROOM
1
ELECTRICAL
•
satta+4 SHct1/4•10144 teammQNDEfl Loa: S
of NOISE t4fllGA-noN1 MnStatES
':riir rc' l•:lh:(t) allil if=9 165i 71L.c)Y/ :(2111et•t--,
Type L Quiet -Duct Silencers have been rated with procedures certified
in accordance with applicable portions of ASTM E 477. All Dynamic
Insertion Loss and Self•Noise Acoustic Performance Data were ob=
tained in IAC's Aero•Acoustic Laboratory using the duct -to -room
reverberant test facility with air flowing through the silencers.
• Forward Flow (+) occurs when noise and air travel In the same
direction, as in a typical supply or fan discharge system.
• Reverse Flow (—) occurs when noise and air travel In opposite
directions, as in a typical return or fan intake system.
For other IAC Rectangular Silencers and Tubular Conic•Flow•
Silencers, see Application Manual. Use SNAP FORM for System Noise
Analysis Procedures and PRESS FORM for cost optimization and Pick-
ing the Right Energy Saving Silencer.
HOW TO DESIGNATE TYPE L
QUIET -DUCT MODELS AND SIZES
EXAMPLE:
Model
C5I 244\y 18]
Length, L Type Width, W
(Feet) L (Inches)
Ila..ae•
TABLE I DIMENSIONS AND WEIGHTS OF L SILENCER MODULES
Height, H
(Inches)
No`mirial
W; iiM
4;161
.di2y;125
#22
M23
4121
421
112i;243
(24i
.24;
'24)
,24;
243
Fa%
(363
w30
6,e
t-p-§i
_d83
748;.%48.
�48 ;
;canon,
H,Tfn,,,'`,
WI
e123
f18'
(20
fO0i
4,3 1
MJ
gm
dial524...303
:381
421
',48
)241;301.
g.2:
i48;
(303
".p98l
r42'e
48'
3 feet
Wt, lb
24
33
43
52
62
74
83
93
71
86
102
117
132
147
121
143
163
184
205
182
209
235
261
5 feet
Wt, lb
41
56
73
89
107
125
141
158
121
147
173
204
230
256
211
245
279
312
346
312
353
395
438
7 feet
Wt, lb
59
78
102
125
150
176
199
226
170
207
243
288
325
362
286
351
398
445
492
—
—
—
—
10 feet
Wt, lb
81
111
155
177
212
250
—
—
241
293
345
405
—
—
—
—
—
—
—
—
—
—
—
NOTE (—) Indicates slze not available as standard.
TABLE 1I DYNAMIC INSERTION LOSS IDIL) RATINGS: FORWARD (+)/REVERSE (-) FLOW
1.j e
4' .Acti e.
�" � v�r
Model
Nurn.er
_ Octave -Ban
- a
7
,
W2
gk3
-1,> itm:rr.'-�s`'
c5.
+' Bi4%xx'7
s 8i
nfe
s
? solIm
WOE
41<
BTCu'
/lancer ace
ern("••'1
raw
x,
. ' •
. vy z r ,.
Dynamic Inse to L ss,
::: ??'4^; t 12 .
5
ail?" t.) n
,• ,v.wr' ,
: -:_ •,
`':..
3L
5000
-2000
+2000
+5000
7
5
4
3
9
6
5
4
11
10
9
7
16
15
14
12
25
25
23
21
18
19
24
25
13
13
14
16
7
8
10
12
5L
- 5000
-2000
+2000
+5000
9
7
8
5
11
8
7
6
15
14
13
11
24
23
21
19
31
31
29
27
32
33
39
39
17
17
20
20
10
11
14
15
7 L
- 5000
- 2000
+2000
+5000
11
8
8
7
17
14
13
9
20
19
18
16
31
30
28
27
43
43
40
38
40
41
47
47
24
24
26
27
14
15
18
19
1 0 L
- 5000
-2000
4- 2000
12
10
10
22
19
18
27
26
25
41
40
38
50
49
_48_
50
50
50
34
34
35
20
21
24
+5000
10
14
• 23
38
47
50
3f
25
NOTE: All 01L and Sel •Nolae Acoustic Performance Data were obtained In IAC's R&D Laboratory using the d ct•lo•room reverberant lest facility with
a r flowing through the silencers. See reverse side for Sell•Nal:a and A rooynamlc Data.
ALSO SEE REVERSE SIDE FOR NOTE ON WHEN DILs EXCEED 50 dB
TABLE 111 AERODYNAMIC PERFORMANCE DATA OF L SILENCER MODULES
.v t• s cariD"i�t
'WId
:�r. r
.' ,•
wi.+
W
WQL•`.
alga f 'n
•r 4
4JJ
0 .0 i r. L'•_G�J�•j'IbA
5 riL
T1!83
1romne
• r':
9.4��105t:'
Igr�i Fti4.
tsoltgr?u
C'%�'t4$I'
3.1.6'
OM
MiI'.
jo
• . S12 -
glllliriJj'.
. - ✓.l -'
A 141.1
4 1,
tth
�f
b'.
•�r�•. -1_
1AT4.
'. t JP R. '.y1
09o.
-ltr IL
Lt R
aC it
`' 1 k.
Ci <.IV
t E..i.lea.
lr
(;
3'h•C,'[h'
#i5W'
.C6U
rt•.
9.541.6,'::,,tl. .t).
11^an
t
Eft
�On.
. • t
....
. ::'t
. . '.f- xiO_,.,M
- •
-- ,.•.•,c
6 x 12
0.5
500
710
875
1000
1125
1235
1420
1590
1750
1950
2250
2520
12 x 12
18
1.0
1.5
04* Vii,
1000
1420,
1750
pggp 009290
•9d711
2E4D
-41Rn
1g00
Nan
4500Q
6750"-7550
son12x
Type L — Low Pressure Drop
1500
ZT3W
2525
3000
3375
3705
4260
4770
5250
5850
12x 24
2.0
2000
2840
.3500
4000
4500
4940
5680
6360
7000
7800
9000
10050
12x30
2.5
2500
3550
3875
5000
5625
8175
7100
7950
8750
9750
11250
12600
12 x36
3.0
3000
4260
5250
6000
6750
7410
8520
9540
10500
11700
13500
15100
12 x42
3.5
3500
4970
6125
7000
7875
8645
9940
11130
12250
13650
15750
17600
12x48
4.0
4000
5680
7000
8000
9000
9880
11400
12700
14000
15600
18000
20100
24x 18
MVpp, a La
000 0 0 0
3000
4260
5250
6000
6750
7410
8520
9540
10500
11700
13500
15100
24 x24
4000
5680
7000
8000
9000
9880
11400
12700
14000
15600
18000
20100
24 x30
5000
7100
8750
10000
11250
12350
14200
15900
17500
19500
22500
25200
24x36
6000
8520
10500
12000
13500
14800
17050
19100
21000
23400
27000
30200
24x42
7000
9940
12250
14000
15750
17290
19920
22240
24500
27300
31500
35200
24x48
8000
11360
14000
16000
18000
19760
22800
25400
28000
31200
36000
40200
36x 24
6.0
6000
8520
10500
12000
13500
14800
17050
19100
21000
23400
27000
30200
38x30
7.5
7500
10650
13130
15000
16880
18520
21300
23850
26250
29250
33750
37720'.
36x36
9.0
9000
12780
15760
18000
20250
22240
25560
28820
31500
35100
40500
45270
36x 42
10.5
10500
14910
18380
21000
23630
25940
29820
33400
36750
40950.
47250
52820
36 x48
12.0
12000
17040
21000
24000
27000
29640
34100
38200
42000
48800
54000
60400
48 x30
10.0
10000
14200
17500
20000
22500
24700
28400
31800
35000
39000
45000
50300
48 x38
12.0
12000
17040
21000
24000
27000
29600
34100
38200
42000
46800
54000
60400
48 x42
14.0
14000
19880
24500
28000
31500
34580
39840
44480
49000
54600
63000
70400
48 x 48
16.0
16000
22720
28000
32000
36000
39520
45600
50800
56000
62400
72000
80400
NOTE it For module availability a e Table 1.
NOTE t Airflow ratings for the 12 n. x 12 In. si e, shown with blue overprint, represent both clm per sq It and silencer face *retool les In Ipm A useful concept in selecting
multiple module silencers.
NOTE 3: me tabulated air flow is In cfm based upon tests conducted In the LAC Restate!' & Development Laboratory Facilities in accordance with applicable AMCA, ASME,
and AOC Alrllow Test Codes. These codes require specified lengths of straight duct both upstream and downstream for the test specimen. The downstream measurements
are made fu enough downstream to include "static regain". Therefore, If silencers are Installed Immediately before or alter elbows, or transitions, or at the Intake or
discharge of the system, surf Went allowance to compensate for These factors must be Included when calculating the operating static pressure loss Through the silencer.
These conditions can add from 1P2 to several velocity heads, depending on specific conditions. All acoustic and aerodynamic data obtained an 241n. x 24 In. production unl Is.
LE IV SELF -NOISE POWER LEVELS, dB re: 10-12 WATTS
.1s•
a -a
'}Made
Oc ve Band
z?f.
?=1
VS
K.4
ZAP
.6
sN
8:t}
1431;125
_2501
,5001
i1K
4g
'al
fi.gK1
llz'
7tilialtrKild
•
Sy�
•: totpow�e
iWumbg:Staocf
- 5000
74
67
67
73
65
67
73
78
- 4000
69
63
63
68
63
64
68
69
-3000
84
59
58
62
60
62
62
58
L
2000
55
52
52
53
56
56
53
43
All
- 1000
41
41
41
38
49
48
38
<20
Sizes
+ 1000
38
31
37
32
32
36
24
(20
+2000
57
51
51
49
47
50
44
35
+ 3000
68
63
59
60
56
58
56
50
+4000
76
71
65
66
62
64
64
59
+5000
82
77
70
72
67
69
71
67
TABLE V FACE AREA ADJUSTMENT FACTORS
Add or subtract from PWL values above
.QitieCDuct
'sjiriest
0.5
1
2
4
8
16
32
64
128
as.adfacia -„
-9
-6
-3
0
+3
+6
+9
+12
+15
'Far Intermediate lace areas, interpolate to nearest whole number.
THE STMOMO OF SttU CE '
WHEN DIL REQUIREMENTS EXCEED 50 dB
• Noise flanking around the silencer or along duct silencer
walls may limit actual performance to approximately 50
d8 Dynamic Insertion Loss for many systems.
• Self -Noise Interference should be checked out especially
for systems with high noise reduction requirements.
• Specially designed silencers and full-scale or scale -model
testing are available for applications requiring silencing
in excess of 50 dB or other unusual requirements.
• Call your local IAC Representative for details.
CONVERSIONS
Multiply Sy To Obtain
cfm 4.719 x 10-4 cubic meters per second (m3lsec)
Ipm 000508 meters per second (Ms)
In 25.4 millimeters (mm)
I.w.g 249.1 Newtons per square meter (NIm2)
It 0.3048 meters (m)
1l2 0.0929 square meters (m2)
lb 0.4535 kilogram (kg)
DIL, Self•Nolse, and Airflow Data CERTIFIED In accordance with ASTM E-477
We reserve the right to Improve design and specifications without notice at any time.
AVAILABLE UPON REQUEST: Specially designed silencers and full-scale or model testing for unusual applications.
NOTE: PAGES 5 THROUGH"52.OF THIS CATALOG ARE AVAILABLE
AS INDIVIDUAL:SHEETS.FROM INDUSTRIAL ACOUSTICS C_ OMPANY.
REQUEST BY NUMBER SHOWN IN UPPER RIGHT'HAND CORNER.
1l3
(
Type Es Quiet -Duct Silencers have been rated with procedures cer-
tified In accordance with applicable portions of ASTM E 477. All
Dynamic Insertion Loss and Self -Noise Acoustic Performance Data
were obtained in IAC's Aereacoustic Laboratory using the duct -to -
room reverberant test facility with air flowing through the silencers.
• Forward Flow (+) occurs when noise and air travel in the same
direction,. as in a typical supply or fan discharge system.
• Reverse Flow (—) occurs when noise and alr travel In opposite
directions, as in a typical return or fan Intake system.
For other IAC Rectangular Quiet -Duct Silencers and Tubular Conic -
Flow• Silencers, see Application Mahual. Use SNAP FORM for
System Noise Analysis Procedures and PRESS FORM for cost op-
timization and Picking the Right Energy Saving Silencer.
m 50
oeg
0
Q 30
w
20
Z 10
63 125 250 500 1K 2K 4K-
FREQUENCY, Hz
8K
ACOUSTICAL EFFICIENCY
HOW TO DESIGNATE TYPE Es
QUIET -DUCT MODELS AND SIZES
EXAMPLE:
ModeF
5Es 24 183
Length, L TypeWidth, W Height, H
(Feet) Es (Inches) (Inches)
ACOUSTICAL EFFICIENCY PLUS ENERGY SAVINGS
For many years, the IAC Type S Quiet -Duct Silencer has
been the industry standard for maximum noise reduc•
Lion with minimum silencer length. The Type Es 'Energy
Saver' Silencer provides the same high level of acoustic
performance combined with a marked decrease in energy
consumption. See additional details on reverse side of
this bulletin.
TABLE I DYNAMIC INSERTION LOSS (DILI RATINGS
..a�.
O'cteve:sa las
z
!xi
vit
to
at
li
7. a'1
jzi3
;831
,:9i;.
831f2
;250:1500'1
abc,
K
"21K2'61(i
flMoet:•ESifencera•'ce
vri,i,
am
-aertlon
Loss
B
• a
earth:
1'i11117be t�VolOd
..
,. ..
•
y,,.y�
3Es
- 2000
6
10
19
29
36
34
23
15
5Es
- 2000
11
19
24
40
52
49
27
17
7Es
-2000
11
21
40
53
54
54
38
24
10Es
- 2000
14
30
40
57
58
56
47
29
9Fs
1nnn
5
1n
tr
2R
eilB
,94�21_
1
��_
- 1000
11
17
23
39
50
49
32
�
2 '
TEs —
- T000 '
fi
• '
SIT
55-
54
! 48'
4t
10Es
- 1000
12
31
44
54
55
56
50
31
3Es
+ 1000
Ico
8
15
25
34
34
24
17
5Es
+ 1000
13
20
35
50
49
36
24
7Es
+ 1000
18
35
48
54
53
46
32
10Es
+ 1000
26
42
55
54
57
51
38
3Es
+2000
3
7
13
23
32
34
24
18
5Es
+ 2000
7
12
19
33
48
49
36
25
7Es
+2000
7
16
32
46
54
51
48
34
10Es
+ 2000
8
23
39
55
54
57
52
41
+) Forward Flow (-) Reverse Flow
NOTE Noise flanking around the s lancer or along duct walls may I mit performance to
pproximately 50 dB OIL for many systems. Specially designed silent rs and tull•scale or
sale model testing are available tor applications requiring In excess or 50 dB OIL Callus
or details.
u 10
0
30
0
m
w
w 20
i
0
w 70
a.
Type Es Compared to
Type S with same airflow,
lace velocity, and length.
3
5 7
LENGTH, FT
ENERGY SAVINGS
10
TABLE II SELF -NOISE POWER LEVELS, dB re: 10-12 WATTS
:Oc`ta e% Err
z
Ktg
eays
ati.
is*
14
in
183$25;2561
t?I15;
?KidK;
oriel:
Lalence - ,�$�gce
v:L
'4'
-
'ga
,..
. 1 owe
11�
c�
!
1.-
um best
4VePb a}P1�ti
ES
A)(
SIZES
- 2000
- 1500
- 1000
56
47
41
54
47
41
58
52
45
60
55
47
61
57
52
65
63
60
69
64
48
64
54
38
+ 1000
+ 1500
+2000
42
50
60
35
47
57
33
44
54
32
41
50
34
43
49
33
45
53
27
43
53
22
41
50
+) Forward Flow (-) Reverse Flow
Face velocity Is determined by dividing c m by silence lace area In sq ft.
Interpolate OIL and Sell•Nolse for Interm dlate velocill s.
TABLE III FACE AREA ADJUSTMENT FACTORS
Sell -Noise Power Levels listed above are referenced to a silencer
face area of 4 sq ft. For other areas, add or subtract the following:
'Quldtlintt ';VU'i4..-
WATOSSA (
0.5
1
2
4
8
16
32
64
128
Faeor, Birdi -9
-6
-3
0
+3
+6
+9+12+15
'For Intermediate lace areas, Interpolate to nearest whole number.
SDS 12.2
.TABLE IV PHYSICAL AND AERS'IAMIC PERFORMANCE DATA OF Es SILENS MODULES
om a
oTru'C'r
-'tiR.0 -
k r'V,1-
SrI� Pr
1'sl'L?,
• rea '
;flllodel;Ntii ber
:• .• ,r.:i .,.. '^- -' • -Mt -4 =21 1Dtf+I
INKY-
„
_
d, rr
-.
1
;5Es�
IRO z-:.
FSFtDi�
✓ r
J ,
n.
7C,057C
lE a
as
ti
tta12a
1133i
M.A4n
wssa
4088a'. 4v
ft r ,
r
rats:seia'at
krtUBalY
eEELsb3
halt'
aW:aaa s
r
.t• 2 . In Jur
- . .1r.
tomsomuntarawg
111.30i
lar40.
$50S
G1�IBE!
ea
• -
rr 1991
a1!* 92
SqF .
#W.ell0128b',
,•r.;
.,:.e
_.,
.,,...
•MP-WI(d:
919
1838
2758,,
1062
2123
3184
1187
2374
,3560
-4 .la
r...12
8 x 24
8 x 38
0.50
1.00
1.50
22
35
49
40
83
lij22
55
88
77
123
71
237
475
712
336
871
411
822
1233
475
949
1424
531
1062
1592
581
1163
744
671
1343
2014
751
1501
822
1844
2.467
12 x r
a1
33
58
78
111
475
_1007
871
822
949
1062
1163
1343
1501
1644
1838
2123
2374 4
12X :
. I
.IC
I
a1
K
•..
I
..
,..1
12 x 24
2.00
52
89
125
177
949
1343
1644
1899
2123
2328
2685
3002
3289
3677
4248
4747
12 x 30
2.50
82
107
150
212
1187
1678
2056
2374
2854
2907
3357
3753
4111
4596
5307
5934
12 x 38
3.00
74
125
176
250
1424
2014
2467
2848
3184
3488
4028
4504
4933
5518
6369
7121
12 x 42
3.50
83
141
199
-
1662
2350
2878
3323
3715
4070
4899
5254
5756
6435
7430
8308
12 x 48
4.00
93
158
228
-
1899
2685
3289
3798
4248
4651
5371
6005
6578
7354
8492
9494
24 x 18
3.00
71
121
170
241
1424
2014
2467
2848
3184
3488
4028
4504
4933
5516
6369
7121
24 x 24
4.00
86
147
207
293
1899
2685
3289
3798
4246
4651
5371
8005
6578
7354
8492
9494
24 x 30
5.00
102
173
243
345
2374
3357
4112
4747
5308
5814
6714
7506
8222
9193
10615
11868
24 x 36
8.00
117
204
288
405
2848
4028
4933
5697
6369
6977
8056
9007
9867
11031
12738
14242
24 x 42
7.00
132
230
325
-
3323
4699
5756
6648
7430
8140
9399
10508
11511
12870
14861
16615
24 x 48
8.00
147
256
362
-
3798
5371
6578
7595
8492
9303
10742
12010
13156
14708
16984
18989;
38 x 30
7.50
142
249
-
-
3560
5035
6167
7121
7961
8721
10070
11259
12333
13789
15922
17802
38 x 38
9.00
162
284
-
-
4272
6042
7400
8545
9553
10465
12084
13511
14800
16547
19107.21362
36 x 42
10.50
182
319
-
-
4985
7049
8633
9969
11145
12210
14098
15762
17267
19305.
22291
24923
36 x 48
12.00
204
355
-
-
5697
8056
9887
11393
12738
13954
16112
18014
19734
22063
25476
28483
NOTE 1: Indl (duel modu es can be as ambled In mul !plea to ulld silen er 'banks' of
lees other t an those 11 fed above Airflow capacity o1 any silencer bank Is the sum of
specifies of Individual modules.
NOTE Z Alrl ow ratings for the 12 In. x 12 In. Ise, shown with blue overprint, represent
both cirri per so it and silencer face velocities In 1pm. A useful concept In selecting multi•
pro module s fencers.
NOTE 3 The abulaled airflow is In cfm based upon tests conducted in the IAC Research
a Developm nt Laboratory Facilities In accordance with applicable AMCA, ASME, and
AOC Alrllow Test Code . These codes requ re specified length of straight duct both
up beam and downstream for the lost specimen. The downstream measurements ar
made tar eno gh down tream to nciude'a allc regain.' Therefore, i1 silencers are In.
ale led limed ately before or alter elbows, or transitions, or at the Intake or discharge of
the system, s Illcient al swan@ to compensate for these factors must be Included when
calculating Ih operating static pr ssure loss Through the silencer. These conditions can
add Irons N2 o several elaclty heeds. depending on specific conditions (see IAC Oats
Sheet SOS 9). All acous lc and at odynamio data obtained on 24 In. x 24 In, production
units.
ENERGY CONSUMPTION
At a -"'en airflow, lower silencer pressure drop means lower fan horse -
port fquirements and lower system operating costs. Accordingly, sit
for air conditioning applications are usually selected for a
pressure drop of approximately 0.5 In H2O or less.
This chart can be used to determine relative differences between in-
itial cost and longterm energy consumption operating costs for any
Type Es Silencer at a specific airflow.
Example Comparing Two Es Silencers with Different Dimensions:
Size
cfm
Pressure Drop, l.w.g,
Relative Initial Cost Index
Relative Operating Cost Index
Total Relative Cost Index
Case I
24" x 42"
10,500
0.5
1.2
5
6.2
Case II
24" x 48"
10,500
0.38
1.4
3.8
5.2
In this case, it pays to use the larger silencer. Operating cost savings
more than offset higher Initial costs.
In practice, analysis of energy consumption costs should be made for
all IAC Silencers which meet DIL requirements. Pressure drop and
energy consumption can be reduced by increasing silencer face area (as
In the above example) or by using lower pressure drop IAC Silencers. For
detailed energy saving silencer selection strategies and comparison of
energy usage characteristics of Type Es Silencers with other Quiet-
Ducte Silencers, see PRESS FORM Selection Guide.
Multiply By To Obtain
CONVERSIONS
Multiply By
elm 4.719 x 10'4 cubic meters per second (m3lsec) Il
pm 0.00508 melera per second (m/s) it2 0.0929
25.4 millimeters (mm) lb 0.4535
249.1 Newtons per square meter (N1m2)
0.3048
1. USE RELATIVE COST INDEX TO COMPARE DIFFERENT MODEL OP.
TIONS AT SAME CFM. THIS CURVE VALID FOR FLOWS ABOV 4000
CFM. FOR LOWER FLOWS CONSULT PRESS FORM SELECTION GUIDE
2 RELATIVE OPERATING COSTS ARE BASED
ON 50•/. UTILIZATION RATE, 80%. FAN EFFI•
CIENCY. FOR OTHER CONDITIONS, INDEX
MUST BE ADJUSTED ACCORDINGLY.
RELATIVE COST INDEX
10
8
8
4
2
10 Es
7 Es
5 Es
/ 3 Es
10
0.2 0.4 0.8 0.0 1 0
SILENCER STATIC PRESSURE DROP - IN. H2O
Relative coal Indices are approximate and for preliminary twat anon
only. Consult IAC for exact analysis on specific applications.
To Obtain
meters (m)
square meters (m2)
kilogram (kg)
WE RESERVE THE RIONT TO IMPROVE
DESIGN ANO SPECIFICATIONS
WITHOUT NOTICE AT ANY TIME.
F,AGE
VEL
t
r
NOTE: PAGES 5 THROUGH 52 OF THiS CATALOG ARE AVAILABLE
AS INDIVIDUAL SHEETS FROM INDUSTRIAL ACOUSTICS COMPANY.
REQUEST BY NUMBER SHOWN iN UPPER RIGHT HAND CORNER.
1
TRANSMITTED
FROM
RMW
Palco Associates
97-1074
21 May 1997
714 574 11E8
REIVED
MAY 2 2 1997
TAYLOR & ASSOC- ARCHITECTS
Mr. Neal Rinello
Taylor and Associates Architects
2220 University Drive, Suite 200
Newport Beach, California 92660
07.15.97
10:58 P.03 *TAYLOR ASSOC
Paleontology
Archaeology
History
23392 Madero, Suite L
Mission Viejo, CA 92691
(714) 770-8042
FAX (714) 458-9058
COPY
RE: Hoag Generator Addition, Paleontological Monitoring and Mitigation
Architect Project #1020.10
Dear Mr. Rinello:
Thank you calling RMW Paleo Associates, Incorporated. We are pleased to offer this proposal
for the paleontological mitigation at the Hoag Generator Addition. The Hoag Hospital is
underlain by Pleistocene (10,000+ years ago) marine terrace deposits and the Miocene age(10-5
million years ago) Monterey Formation. Both of these geologic units have produced a variety of
both terrestrial and marine fossils from the Newport Beach area. In 1989, BMW Paleo
Associates collected a well-preserved right femur of an extinct bison in addition to fossil snake
vertebrae, rodent teeth, turtle plates, and bird remains. Marine fossils are represented by oyster,
snails, clams, and abalone.
Paleontological services will consist of attendance at the preconstruction conference, preparation
of required documents, visits to the site during grading operations, the salvage of significant
fossils exposed by grading, a final report, and distribution of fossils to the Orange County
designated repository. All services will be charged at $37.00 per hour.
It is our understanding that the duration of this project is expected to be two weeks. This
proposal is based on 10 days of observations. If the project is extended and additional monitoring
is required, an augment to this contract may be necessary.
TRANSMITTED FROM 714 574 1.8 07.15.97 10:581P.04 *TAYLOR ASSOC
97-1074•
Hoag Generator Addition
page 2
Task:
Attendance at the pre -construction conference and preparation of required
documents $296.00
Monitoring, 4 hours per day x 10 days $1480.00
Project Management, 5 hours $185.00
Laboratory.Analysis, includes preparation of fossils to the point of
identification, and distribution of fossils to the designated repository
(estimate only, as we do not know what fossils will be collected)
10 hours $370.00
Final Report (estimate only) 24 hours $888.00
Total Costs for 10 days of Grading $3219:00
The salvage of significant fossils which cannot be removed during the.time allotted to monitoring
is not included in this proposal. That type of salvage will be handled on an item by item basis, and
will be coordinated with the project manager. Cost estimates can be supplied at the time of
discovery. Supplies will be billed at cost plus 5%.
RMW Paleo Associates, Incorporated carries Commercial General Liability with $2,000,000
limits, Automobile Liability for hired and non -owned autos with $1,000,000 limits, Workmen's
Compensation, and $250,000 Professional Liability Insurance.
We are looking forward to working with you on this interesting project. Ifyou•have any
questions about this proposal, please contact us. Ifyou find the services and costs outlined
acceptable, please sign the work authorization below and return a copy to our office.
Respectfully,
Marilyn Mo g Prin p
Work Authorization
Authorized Signature Date
mmmmmmmmmmmmm
TRANSMITTED FROM 714 574 108 07. 15. 97 10:58 P.02 *TAYLOR ASSOC
Hoag Memorial Hospital Presbyterian
One Hon Drive PO Bac 6100
Ntrpon Muth Cn,a0a-6100
Phan 714/6454600
June 30,1997
EMW PalaoAseoaiates, fae
21392 Madero, Suite L
Mission Vino, California 92691
Attention Msrilyr Morgan
Reference: Hoag Project 1251.68 Central Plant Upgrade Generators
Subject: Authorization to Proceed
Dear Ms. Morgan:
Thin latter will carve as your tinsel Anthmisetto i to Proceed, as of June 30,1997, with the
paleontological mitigation service. for the Central Plant Upgrade Geaarattaa project.
Al work shall be completed In accordance with your proposal dated May 21,1997. Compensation for
aervices shall be billed far time at scheduled rates not to exceed Three Thousand Two Hundred
Nineteen Dollars (19,219.00). Matrtiala and reimbursable. shall be invoiced separately at cost. We
will send you a copy of the purchase order number and invoicing instructions within tan working days
of acquiring appropriate administrative approval signatures.
We look forward to working with your company towards successful completion of this project. If you
have any questions, please contact me at (714) 848.8901.
Sincerely,
HOAG MEMORIAL HOSPITAL
Leif N. Thompson, AIA
Via President
Pactlittes Design & Conatruaiion
LNT: gl
itt usLeart.ttioanv!imam
tONJIOrtr COUYtJNITY IIOWITA' ACORzOtnu MY TIM JOLvt te4N7tstON ON ACGIIOMATTOR OF utsLn[GNt etaANtzATIONs
IEMEI
IMailt
TO: iye
s❑ MAYOR
0 CITY MANAGER
Q DEPUTY CITY MGR.
❑ ATTORNEY
0 BUILDING
❑ CITY CLERK D PARKS & REC.
❑ FINANCE - ADMIN. 0 PERSONNEL
0 ACCOUNTING ❑ PLANNING
❑ DATA PROCESSING 0 POLICE
Q DUPLICATING ❑ PUBLIC WORKS
❑ PAYROLL Q TRAFFIC
D PURCHASING 0 UTILITIES
0 REVENUE ❑ TELECOMM.
DATE 40-7-/ 7
❑ CITY COUNCIL
0 FIRE
❑ GENERAL SERVICES
0 LIBRARY
Q MARINE
FOR Q ACTION & DISPOSITION
Q FILE
Q INFORMATION
❑ REVIEW & COMMENT
NI RETURN
•
"Err
J/. �i�/«/..
FROM:
Ihi0.
a ewed } ,
Aaa° a
ce441( Mad
,elf5jtvitd
ak
TRANSMITTAL
2220 UNIVERSITY DRIVE, SUITE 200
NCWPORT BEACH, CALIFORNIA 92660
714 574 1325 %Ax 714 574 1338
ARCHIIEC LURE AND INTERIOR DESION
RECEIVED BY
PLANNING DEPAR NT
CITY OF NEWPORT BEACH
• MAR 27 1997
Al/ 8jb3Wd1112i112121415t6
4a
TAYLOR
& ASSOCIATES
ARCH' I ECIS
TO• DATE
CITY OF NEWPORT BEACH -.PLANNING
3300 Newport Boulevard
Newport Beach, CA 92663 -
ATTENTION:
Gina Garcia
WE ARE SENDING -YOU VIA
U.S. Mail
_PRINTS ORIGINALS OTHER !SEE DESCRIPTION BELOW)
March 25, 1997 0
PROJECT NUMBER
- 1020.10
PROJECT
HOAG MEMORIAL HOSPITAL PRES.
• EMERGENCY GENERATOR BUILDING
THE FOLLOWING ITEMS
NO OF ITEMS DATE.. DESCRIPTION
1
•
12/5/95 AcousticalReport from McKay, Conant, Brook.
THESE ARE TRANSMITTED AS CHECKED BELOW:
FOR APPROVAL X FOR YOUR USE AS REQUESTED __FOR REVIEW AND COMMENT
REMARKS.
Gina:
• Here is a copyof the Acoustical Report for your fites, as requested.
Thanks.
•
•
COPY TO:File
FROM:
•
Gary Simmons
• •
McKAY
CONANT
BROOK INC
Consultants in Acoustics and Media Systems
Gary E. Simmons, Architect
Taylor & Associates, Architects
2220 University Drive, Suite 200
Newport Beach, CA 92660
Subject: Hoag Hospital Emergency Generator Replacement: Preliminary Noise -
Control Recommendations for Inlet, Disrharge and Exhaust Openings.
Ronald L MCKay
David A Conant
Rollins Brook
RECEIVED 6 December 1995
DEC 0 7 1995
TAYLOR & ASSOC. ARCHITECTS
Dear Gary:
Further to our recent telephone discussions, we are pleased to enclose our preliminary
recommendations for noise control for the generator -building inlets and outlets. We would
comment as follows:
1. Design Noise Criterion
The design noise criterion defined in the Community Development Plan for this project
is 55dBA at any nearby property line, irrespective of the time of day.
Generator noise impacting the hospital tower is also of concern (in order that patients
are not unduly disturbed during generator testing). We recently visited the site and
measured levels of approximately 55dBA outside the facade of the hospital tower. It is
our opinion that 55dBA would be an appropriate design criterion to adopt for generator
noise incident on the exterior of the tower.
2. Discharge Shaft "Caps"
As discussed in our fax of 20 November 1995, we would strongly recommend that the
cops of the discharge shafts be "capped" as you suggested at our meeting. This
significantly reduces the silencer requirements (by directing noise away from sensitive
property lines), in addition co protecting the silencers front the elements (Derail 1,
enclosed, shows the general design intent)'.
3. Manufacturers' Noise Daca
We received the following noise data for the proposed. generators (Caterpillar 3516,
1750kW units) from your office on 30 October 1995:
:"'• Shand Pressure•I:etteI. at Distance. :
•::; Shown, d$• re:'Z %x:•10's Pa.• "
•.. ,.....;.�..� ... • ;:•: ,•:- •:: ........... ...:::63,.
' - :, ; Octave Ban l: Center Frequency. (Hz); • :::
225:250;
.500
:Ik�:2k.'.:.4k:.
:;,8k.;
Caterpillar 3516: Exhaust @ 4.9 ft.
105
106
112
111
108
108
108
106
Mechanical @ 3.2 ft. (no fan)
100
102
98
99
101
99
95
90
5655 Lindero Canyon Road Suite 325 Westlake Village CA 91362 313 991 93C0 Fax S1S 991 2324
HOAG Hospital Emergency Generators
5 December 1995
Page 2
M`KAY
CONANT
BROOK INC
We understand that the standard Caterpillar radiator/fan will be replaced by a Young
unit which will be exactly the same as those previously used in the Harbor UCLA
project. Along with this Caterpillar data, we received the following noise data for the
proposed Young fan/radiator unit:
'S6iind:Pressure tetel at 25'ft:.f 6m2
Fan.B ng Edge•,,'ti re. Z: (i0 Pa:
OctavkBaci& Center •Fregtiericy
250
;5'00
8
Young 7.75 ft. diameter,
55605 cfm fan, @ 1" w.g.
78
74
69
63
60
58
52
45
4. Mode of Operation & Testing
We understand chat a maximum of four generators will be in operation at any one time,
and that the fifth generator will function only as a standby unit. If five generators run
together ac any time, noise levels will increase by only 1dBA (one dBA).
5. CFM Figures
The standard Caterpillar unit with its factory -fitted radiator and fan is listed as having
an inlet airflow requirement of 81,000cfm per unit (plus 5724cfm per unit for
combustion air at the inlet only). We understand, however, char when fitted with the
Young radiator units, each generator draws only 55605cfm (in addition to 5724cfm
combustion air), giving a total of 245,316cfm inlet air for 4 units, and 55605cfm per
discharge shaft. For our analysis, we have assumed chac the Young radiators/fans will
definitely be used in the design, since we understand this co be the case, and since this
option is acoustically far superior to using the Caterpillar radiator/fan option.
a. Inlet:
The proposed cross -sectional size of the bank of inlet silencers is 56 ft. x 7 fc.,
giving a face velocity of 630fpm with the Young radiators/fans.
b. Discharge:
Each discharge shaft has a proposed cross -sectional area of 100 sq. fc., thus giving
a face velocity of 560fpm with the Young radiators/fans.
• •
HOAG Hospital Emergency Generators
5 December 1995
Page 3
6. Noise Control
M`KAY
CONANT
BROOK INC
Due to the extremely sensitive nature of this project, it is vitally important that
•acoustically -inferior products are not substituted for those suggested below. Any
proposed substitutions should be submitted for our approval.
a. Inter Duct Silencers
We recommend that the inlet silencer bank be constructed from silencers
equivalent to IAC type 5ES (see enclosed catalog cut). The published scacic
pressure drop figure for these silencers at a face velocity of 630fpm would be
approximately 0.07" w.g.
b. Discharge Duct Silencers
We recommend chat a 10-foot silencer equivalenc co IAC type 10L be installed
in each discharge shafc (see enclosed catalog cut and Detail 1). The cacalog scacic
pressure drop figure for each of these silencers is approximacely 0.05" w.g. at a
face velocity of 560fptn.
c. Exhaust Muffler
We recommend an exhaust muffler equivalent co a 14" diameter-inlec Nelson
400. The "Maxim M-51" muffler originally proposed in your initial cransmictal
would nor be acoustically adequate.
d. Acoustical Lining
Inside the generator building, the walls and the underside of the roof should be
completely covered with 4"-chick acoustical lining equivalent to Schuller •
Linacoustic R-300 (see catalog cuc senc with our fax of 20 November 1995).
The inlet plenum between the room roof opening and che inlet silencers should
also be similarly lined, as should the discharge shafts. For the proposed location
of the lining, please see enclosed Detail 1. The lining opposite the radiator fan
ac the bottom of each discharge shafc may be procecced by a perforated mecal
liner if this is required co scop tearing and erosion by che large incident airflow.
The liner should have a minimum 35% open area and should be no thicker than
20 gauge.
• •
HOAG Hospital Emergency Generators
5 December 1995
Page 4
7. Building Construction
a. Walls and Roof
M`KAY
CONANT
BROOK Inc
We would reiterate our recommendation that the walls and roof be constructed
from concrete with a minimum weight of 100 lb./ sq. fr.
b. Doors and Interior Walls and Windows
We will make recommendations for doors and interior walls and windows in due
course.
We trust chat the above information is adequate for your current needs. We will calculate the
acoustical requirements for the items listed in section 7.b, above, and will forward our
recommendations within the next few days. If you have arty questions in the meantime, please
do nor hesitate to call.
Yours sincerely,
M`KAY CONANT BROOK INC
Matthew rooke, Ph.D.
Consultant
MB:sk
Enclosures
cc: Mr. Toshio Okajima, P.E. - J. L. Hengsder Associates
Mr. Russ Givens - R. E. Wall & Associates
':till. r
HOW TO DESIGNATE TYPE L
Type L Oulet•Duct Silencers have been rated with procedures certified
in accordance with applicable portions of ASTM E 477. All Dynamic
Insertion Loss and Self -Noise Acoustic Performance Data were ob
tained in IAC's Aero•Acoustic Laboratory using the duct-to•room
reverberant test facility with air flowing through the silencers.
• Forward Flow (+) occurs when noise and air travel In the same
direction, as In a typical supply or fan discharge system.
• Reverse Flow (—) occurs when noise and air travel in opposite
directions, as In a typical return or fan Intake system.
For other IAC Rectangular Silencers and Tubular Conic•Flowe
Silencers, see Application Manual. Use SNAP FORM for System Noise
Analysis Procedures and PRESS FORM for cost optimization and Pick-
ing the Right Energy Saving Silencer.
OUIET-DUCT MODELS AND SIZES
EXAMPLE:
Length; L
(Feet)
Model
ESL 24\y 18]—\\
Type Width, W Height, H
L (Inches) (Inches)
TABLE I DIMENSIONS AND WEIGHTS OF L SILENCER MODULES
Nankai
iL•ep,•gthvi
Vain;Y1
61421
#23
ji al
k23
Sh,?]
jig!t241
12-4..;
24;
•243
;24;
:36
24:
;
(363
1863
r3QA,
011481,c'•4_8?
-IC_q8:1
H, fitt2I
if?)
tie'
al..
F30j
(38i
,4211
BM
118`'.
i24j
;30
;3e2
•'42s
;48a
441
:'.1o3
i e
g2;
i i3
i$03
"n9e!
,42}
,•',48a
3 feet
Wt, lb
24
33
43
52
62
74
83
93
71
86
102
117
132
147
121
143
163
184
205
182
209
235
261
5 feet
Wt, Ib
41
56
73
89
107
125
141
158
121
147
173
204
230
256
211
245
279
312
348
312
353
395
438
7 feet
Wt, Ib
59
78
102
125
150
176
199
226
170
207
243
288
325
362
286
351
398
445
492
—
—
—
—
10 feet
Wt, lb
81
111
155
177
212
250
—
—
241
293
345
405
—
—
—
—
—
—
—
—
—
—
—
NOTE (—) Indicates size not available as standard.
TABLE 11 DYNAMIC INSERTION LOSS (DILI RATINGS: FORWARD (+1IREVERSE (-1 FLOW
tar c;R-.7• x-_i
' Oc et" ve4Band
Z
ZETA
M2•?
*it*
«4 1
Mt
WAR
ns8
weal
gil
g.4
118615
MUM
IWRIA
MIMI
SEMI
4
z '
-Ilene ace.
` 61ocl ,;::.:
• , ` yf�
'` .Dynamtohtse
;
to •as,dB'
i°
"`_ 4
- 5000
7
9
11
16
25
18
13
7
3 L
- 2000
+2000
5
4
8
5
10
9
15
14
25
23
19
24
13
14
8
10
+5000
3
4
7
12
21
25
16
12
- 5000
9
11
15
24
31
32
17
10
5L
- 2000
+2000
7
8
8
7
14
13
23
21
31
29
33
39
17
20
11
14
+5000
5
6
11
19
27
39
20
15
-5000
11
17
20
31
43
40
24
14
%L
- 2000
+2000
8
8
14
13
19
18
30
28
43
40
41
47
24
26
15
18
+5000
7
9
16
27
38
47
27
19
-5000
12
22
27
41
50
50
34
20
10 L
- 2000
+2000
10
10
19
18
26
25
40
38
49
48_
50
50
34
35
21
24
+ 5000
10
14
23
,
38
47
50
37
25-
NOTE: All OIL and5M •NOIsa Acoustic Performance Data w re obtained In JACS R&O Laboratory using Ned oleo -roam reverberant l st facility with
sH Ilowmg Through tiro silencers. Sea nnna Ide for SelI•Naise and Aerodynamic Data.
ALSO SEE REVERSE S DE FOR NOTE ON WHEN DILs EXCEED 50 d8
TABLE III AERODYNAMIC PERFORMANCE DATA OF L SILENCER MODULES
lo'd
.. :• .err r
- esau' Die
: 9.
:.:::
. - :_
:-._:
.'X4einD"t.S�
I;Crltri'
ell;
r ,..
(s
Ft'j <:
re-:-d.:
c',�21fSti4
' ...�:
1.Q,$4t
,,
..• ,dn;
.'• •
allelic
'
...
Erin
S t
}' •:F•f
',_
' -i q' A
�r7,2 -.
i
o ab
31f.
', O�i
ti~5� -
ac jx 1
p.. `loi
eaj
l ..�
ua?Tw
.
d_0_2 0,54
.
1
Sag.
,
8x 12
0.5
500
710
875
1000
1125
1235
1420
1590
1750
1950
2250
2520
12 X 12
aaoNN+.+
oinoutotab
9. CE WI
1000
1420.
175Q
2020
2250
•2a7n
Iran_
ql gn
95n0
3900
45n(vo�
5�4Q,9,n
12 x 18
Type L — Low Pressure Drop
15Uu
27:t1T
2625
3C00
3375
3705
4260
4770
5250
5850
675T-7550
12x24
2000
2840
. 3500
4000
4500
4940
5680
6360
7000
7800
9000
10050
12 x 30 1
2500
3550
3875
5000
5625
8175
7100
7950
8750
9750
11250
12600
12 x 38
3000
4260
5250
6000
6750
7410
8520
9540
10500
11700
13500
15100
12 x 42
3500
4970
8125
7000
7875
8645
9940
11130
12250
13650
15750
17600
12 x 48
4000
5680
7000
8000
9000
9880
11400
12700
14000
15600
18000
20100•
24 x 18
e)VWte041
GOO O GO
3000
4260
5250
6000
6750
7410
8520
9540
10500
11700
13500
15100
24x24
4000
5680
7000
8000
9000
9880
11400
12700
14000
15600
18000
20100
24 x 30
5000
7100
8750
10000
11250
12350
14200
15900
17500
19500
22500
25200
24 x 36
6000
8520
10500
12000
13500
14800
17050
19100
21000
23400
27000
30200
24 x 42
7000
9940
12250
14000
15750
17290
19920
22240
24500
27300
31500
35200
24x 48
8000
11360
14000
16000
18000
19760
22800
25400
28000
31200
36000
40200
38 x 24
6.0
6000
8520
10500'
12000
13500
14800
17050
19100
21000
23400
27000
30200
38 x 30
7.5
7500
10650
13130
15000
18880
18520
21300
23850
26250
29250
33750
37720'.
36x 38
9.0
9000
12780
15760
18000
20250
22240
25560
28620
31500
35100
40500
45270
38 x 42
10.5
10500
14910
18380
21000
23630
25940
29820
33400
36750
40950
47250
52820
38 x 48
12.0
12000
17040
21000
24000
27000
29640
34100
38200
42000
46800
54000
60400
48 x30
10.0
10000
14200
17500
20000
22500
24700
28400
31800
35000
39000
45000
50300
48 x38
12.0
12000
17040
21000
24000
27000
29600
34100
38200
42000
46800
54000
60400
48 x 42
14.0
14000
19880
24500
28000
31500
34580
39840
44480
49000
54600
63000
70400
48 x 48
16.0
16000
22720
28000
32000
36000
39520
45600
50800
56000
62400
72000
80400
NOTE 1: For nodule availability s • Table I.
NOTE t Airflow ratings for the 12 n.xItin.size, shown wllh blue overprint, represent both clm per sq It and silencer face retool es in Ipm. A useful concept I selecting
multiple module silencer.
NOTE 3 The tabulated aN NOW is In clm tfued upon tests conducted In the IAC Research 1 Development Laboratory Facilities in a cbrdance wllh applicable AMCA, ASME,
and AOC Airflow Tut Codes. Thu codes require specified lengths of straight duct both upstream and downstream for the tut specimen. Ma downstream measurements
ate made far enough downstream to Include "static regain". Therefore, II silencers are Installed immediately before or after elbows, or transitions, or at the Intake or
discharge of the system, suflicten allowance to compensate far Ines11 factors must be Included when calculating the operating static pressure loss through the silencer.
These conditions can add/rom H2lo seven velocity Made, depending on specillecondlllona. All acoustic and aerodynamic data obtained on 24 in. x 24In. production units.
LE IV SELF -NOISE POWER LEVELS, dB re: 10-t2 WATTS
2"L
3.Oc64ve. Bind
Mt1.2
3
E Z
F.4113?�r
if
$$toil i•
Na"`
s7Sibndet
uz
Aa.1;125
:2601
500;
it li
'2fa
ggi10.1C.
Ec
P-4*. slit gad
,
..
r, .!
- 5000
74
87
67
73
85
87
73
78
- 4000
89
63
63
88
63
64
68
69
-3000
64
59
58
62
60
62
62
58
- 2000
55
52
52
53
56
56
53
43
All
- 1000
41
41
41
38
49
48
38
<20
SIZES
+1000
38
31
37
32
32
36
24
<20
+2000
57
51
51
49
47
50
44
35
+3000
68
63
59
80
56
58
56
50
+4000
76
71
85
88
62
84
84
59
+5000
82
77
70
72
87
69
71
67
TABLE V FACE AREA ADJUSTMENT FACTORS
Add or subtract from PWL values above
.Q1.11e0Dl7ct-.: • ...;_
Tw., I1Y:•-able-
0.5
1
2
4
8
16
32
,64
128
.-.�..r�
-9
-8
-3
.
0
+3
+8
+9
+12
+15
' ' ;B sr`j•
'far Weimedlm lace tress, Interpol le td nareat whole number.
WHEN DIL REQUIREMENTS EXCEED 50 dB
• Noise flanking around the silencer or along duct silencer
walls may limit actual performance to approximately 50
d8 Dynamic Insertion Loss for many systems.
• Self -Noise interference should be checked out especially
for systems with high noise reduction requirements.
• Specially designed silencers and full-scale or scale -model
testing are available for applications requiring silencing
In excess of 50 dB or other unusual requirements.
• Call your local IAC Representative for details.
CONVERSIONS
Multiply By To Ob1s1n
elm 4.719 x 10"4 cubic meters per second (m31sen)
Ipm 0.00508 meters per second (Ms)
In. 25.4 mllllrn.lers (mm)
I.w.g 249.1 Newtons per square meter(Nlm2)
It 0.3048 meers (m)
n2 0.0929 square meters (m2)
lb , 0.4535 kilogram (kg)
OIL, SdFNolee, and Airflow Dan CERTIFIED In accordance with ASTM E477
We reserve Me right to Improve design and specifications without nonce at any Irma.
AVAILAELE UPON REQUEST: Specially designed silencers and lult•scsle or model testing for unusual applications.
NOTE: PAGES 5 THROUGH.52 OF THIS CATALOG ARE AVAILABLE
AS INDIVIDUAL"SHEETS:PROM INDUSTRIAL ACOUSTICS COMPANY.
REQUEST BY NUMBER SHOWN IN UPPER RIGHT'HAND CORNER.
-, _ ••
(
Type Es Qulet•Duct Silencers have been rated with procedures cer-
tified In accordance with applicable portions of ASTM E 477. All
Dynamic Insertion Loss and Self -Noise Acoustic Performance Data
were obtained in IAC's Aeroacoustic Laboratory using the duct -to -
room reverberant test facility with air flowing through the silencers.
• Forward Flow (+) occurs when noise and air travel In the same
dlrection,,as In a typical supply or fan discharge system.
• Reverse Flow (—) occurs when noise and air travel in opposite
directions, as In a typical return or fan intake system.
For other IAC Rectangular Quiet -Duct Silencers and Tubular Conic -
Floe Silencers, see Application Mahual. Use SNAP FORM for
System Noise Analysis Procedures and PRESS FORM for cost op-
timization and Picking the Right Energy Saving Silencer.
63 125 250 500 1K 2K 4K
FREQUENCY, Hz
ACOUSTICAL EFFICIENCY
HOW TO DESIGNATE TYPE Es
QUIET•DUCT MODELS AND SIZES
EXAMPLE:
Model
/—C SEs 24 18
Length, L Type Width, W Height, H
(Feet) Es (Inches) (Inches)
ACOUSTICAL EFFICIENCY PLUS ENERGY SAVINGS
For many years, the IAC Type S Qulet•Duct Silencer has
been the Industry standard for maximum noise reduc-
tion with minimum silencer length. The Type Es 'Energy
Saver' Silencer provides the same high level of acoustic
performance combined with a marked decrease In energy
consumption. See additional details an reverse side of
this bulletin.
TABLE I DYNAMIC INSERTION LOSS (DIL1 RATINGS
..-0-:7.....-.
0cteve:BG do
.41
�(b,',18
Oa3
;8�y
MO •
' e ce a
,7
; eertion
L as ' B
.i.r.
3Es
- 2000
6
10
19
29
36
34
23
15
SEs
- 2000
11
19
24
40
52
49
27
17
7Es
-2000
11
21
40
53
54
54
38
24
10Es
- 2000
14
30
40
57
58
58
47
29
'We
mill/_
5
1n
17
aa__u_
14,
p'1
;IL
IC ¢Fe_
— 1000
11
17
23
39
50
49
32
2r
7Es
- 1000
11
22
36
50
•bb
b4
4J
Zr.
10Es
- 1000
12
31
44
54
55
56
50
31
3Es
+1000
4
8
15
25
34
34
24
17
5Es
+1000
8
13
20
35
50
49
36
24
7Es
+1000
8
18
35
48
54
53
46
32
10Es
+1000
10
26
42
55
54
57
51
38
3Es
+2000
3
7
13
23
32
34
24
18
SEs
+2000
7
12
19
33
48
49
36
25
7Es
+2000
7
18
32
48
54
51
48
34
10Es
+2000
8
23
39
55
54
57
52
41
(+) Ferward Flow (.) Reverse Flow
NOTC Noise flanking around the silencer or along due walls may limit performance to
preaimaley 50 dO OIL for many systems. Specially de toned silencers and lull•scale Of
KIN MOM testing are available lot applications requiring In aacasa dl50 dB OIL Call us
let details.
Typo ES Compared to
Type 5 wlln San airflow,
face "/Dolly, and I.ngILL
r ,
3 5 7
LENGTH, FT
ENERGYSAVINGS
10
TABLE I1 SELF -NOISE POWER LEVELS, dB re: 10-12 WATTS
%;
ode
umbe
oata'e ••ire-vcti
L ;mis
51: ,
aEx, WI 182
•1-
CEEM.1itK°EM
1''i
11 '
o ee
'
owe 1
.
�
r W:
- 2000
56
54
58
60 61
65 69
64
ES
- 1500
47
47
52
55 57
63
64
54
A((
- woo
41
41
45
47 52
60
48
38
Sizes
+1000
+1500
42
50
35
47
33
44
32 34
41 43
33
45
27
43
22
41
+2000
80
57
54
50 49
53
53
50
+) Forward Flow (-) Revers Flow
Face velocity Is determined by dividing c m by Ilencer lace area In se It.
Interpolate OIL and sel5Noise for Intermediate Cecilia'.
TABLE III FACE AREA ADJUSTMENT FACTORS
Sell -Noise Power Levels listed above are referenced to a s fencer
face area of 4 sq ft. For other areas, add or subtract the lot owing:
aitaftivis
,ace rgg— ..
0.5
1
2
4
8
18
32
84
128
., 1
i1c(7f•r•(':..'
-9
-6
-3
0
+3
+6
+9+42+15
'For Intermediate lace arias, Interpolate to nest, I whole number.
SOS 12.2 ,
•TABLE IV PHYSICAL AND AERNAMIC PERFORMANCE DATA OF Es SILENQ MODULES
vSI1
•14t^
1'"r"i.1-
t 1t
NodeCNyrn6"erg
,•.:CCC^!_!?1DL`of
'4
w127a
.
'Miff,-'..
. Jr•+'
r
•
•
828
-•
i 1 IN
_`R rT
red
SR F
116
NeitltlaYeE49
z05at
BILI S
atfi1•
1k33#
e'.5
�.:or r
f.•.e
'S112osrail
.:
its.twoo541a['7R801i_
.-.n,:!
.' e'•...I
•r'
um
t !re
191s*m9s>I�K9
,t•io
to
1r
-oilman
.74.;
('LOEM
too
w.itopt ¢t,
laatc-,'
Afi1w
it c�-
N
.
,,.12
0.50
22
40
55
77
237
336
411
475
531
581
871
751
822
919
1062
1187
8 x 24
1.00
35
63
88
123
475
671
822
949
1082
1183
1343
1501
1844
1838
2123
2374
6 x 38
1.50
49
87
122
712
1007
1233
1424
1592
1744
2014
2252
467
275_8
3184
3560
�12 x 1
%QQQ
33
56
78
1,171
111
475
871
822
949
1062
1163
1343
1501
1844
1838
2123
23/4
12 x T8
1.b0
41.-
(4
lu[
'DO
nt
tuu/
14J3
1444
1592
TI44-
YUT4
• •
'•
'
• 1
12 x 24
2.00
52
89
125
177
949
1343
1644
1899
2123
2328
2685
3002
3289
3677
4246
4747
12 x 30
2.50
82
107
150
212
1187
1878
2056
2374
2654
2907
3357
3753
4111
4596
5307
5934
12 x 38
3.00
74
125
176
280
1424
2014
2467
2848
3184
3488
4028
4504
4933
5516
6369
7121•
12 x 42
3.50
83
141
199
-
1682
2350
2878
3323
3715
4070
4899
5254
5758
6435
7430
8308
12 x 48
4.00
93
158
226
-
1899
2685
3289
3798
4246
4651
5371
6005
6578
7354
8492
9494
24 x 18
3.00
71
121
170
241
1424
2014
2467
2848
3184
3488
4028
4504
4933
5518
6369
7121
24 x 24
4.00
86
147
207
293
1899
2685
3289
3798
4246
4651
5371
6005
6578
7354
8492
9494
24 x 30
5.00
102
173
243
345
2374
3357
4112
4747
5308
5814
8714
7506
8222
9193
10615
11868
24 x 38
6.00
117
204
288
405
2848
4028
4933
5697
6369
6977
8056
9007
9867
11031
12738
14242
24 x 42
7.00
132
230
325
-
3323
4699
5756
6648
7430
8140
9399
10508
11511
12870
14861
16615
24 x 48
8.00
147
256
382
-
3798
5371
6578
7595
8492
9303
10742
12010
13156
14708
16984
18983
38 x 30
7.50
142
249
-
-
3560
5035
6167
7121
7961
8721
10070
11259
12333
13789
15922
17802
36 x 38
9.00
182
284
-
-
4272
6042
7400
8545
9553
10465
12084
13511
14800
16547
19107
21362
38 x 42
10.50
182
319
-
-
4985
7049
8633
9969
11145
12210
14098
15762
17267
19305.
22291
24923
38 x 48
12.00
204
355
-
-
5697
8056
9867
11393
12738
13954
16112
18014
19734
22063
25476
28483
NOTE 1: Ind' 'dual madu es can be as ambled in mul (pies to build silen er 'bank ' of
Wee other Than those II led above. Airflow c paalty of any sit ncer bank Is the sum of
capacities of Individual modules,
NOTE t Mellow ratings for the 12 in. x 12 in. lee, shown wan blue overprint, ',peasant
Oath clerk per sq It and silencer face velocities in 1pm.A useful concept In selecting multi.
pie module silencers.
NOTE t TM tabulated airflow Is in cfm based upon tests conducted In the IAC Research
a Development Liberator), Facilities In accerdsnce with applicable AMCA, ASME, and
?NERDY CONSUMPTION
ADC Airflow Test Code . These odes nqu re specified length of sirsht duct bom
upstream and downstream log th test specimen. The downstr am measurements are
made far enough down Ireanl to Include 's 'tic regain.' Therefore. If silencers are In-
stalled Immediately before or al lee Chows, ar transitions* or at Ih intake or discharge of
the system. sufficient al (wane to compensate lot Lhasa factors must be included when
calculating the operating static pressure Ion through the silence . These conditions can
add from 1/2 to several docity nn0. Oepanding on specific conditions des IAC Dare
Sheaf SOS 9). All acous la and aerodynamic data obtained on 2 in, x 24 In. production
units,
\t a ^I gen airflow, lower silencer pressure drop means lower tan horse -
En. squirements and lower system operating costs. Accordingly, sl•
enc�,d for air conditioning applications are usually selected for a
)res5ure drop of approximately 0.5 in H2O or less.
This chart can be used to determine relative differences between in.
tial cost and longterm energy consumption operating costs for any
•ype Es Silencer at a specific airflow.
Sxample Comparing Two Es Silencers with Different Dimensions:
Size
cfm
Pressure Drop,i,w.g,
Relative Initial Cost Index
Relative Operating Cost Index
Total Relative Cost Index
Case I Case II
24" x 42" 24" x 48"
10,500 10,500
0.5 0.38
1.2 1.4
5 • 3.8
6.2 5.2
this case, it pays to use the larger silencer. Operating cost savings
lore than offset higher Initial costs.
In practice, analysis of energy consumption costs should be made for
all IAC Silencers which meet OIL requirements. Pressure drop and
dnergy consumption can be reduced by increasing silencer face area (as
n the above example) or by using lower pressure drop IAC Silencers. For
!stalled energy saving silencer selection strategies and comparison of
'nergy usage characteristics of Type Es Silencers with other Quiet.
)ucte Silencers, see PRESS FORM Selection Guide.
CONVERSIONS
Multiply By To Obtain Multiply Sy
dim 4.719 x 10-4 Sulk miters per second (mitotic) It 0.3045
fpfir 0.00505 rulers per second (m/s) 112 0.0929
25.4 rllilmetefslmm) lb 0.4535
249.1 Newtons per square meter (0m2)
r
t. USE RELATIVE COST INDEX TO COMPARE DIFFERENT MODEL OP-
TIONS AT SAME CFM. THIS CURVE VALID FOR FLOWS ABOV 4010
CFM. FOR LOWER FLOWS CONSULT PRESS FORM SELECTION GUIDE.
2. RELATIVE OPERATING COSTS ARE BASED
ON 50% IJTIUZATION RATE, BOY, FAN EFFI-
CIENCY.MUSTBEAOJUSTE0 ACCORDINGLY.
10
10 Es
c
z
0
W 6 .
F 7 Es
5 Es
2
3Es
INITIAL
COST
0
8
6
4
RELATIVE COST INDEX
I t 1 r
02 0.4 0.8 0.5 10
SILENCER STATIC PRESSURE DROP - IN. H2O
Relativegory. Consult Indices UC for exact analysite s o spfor.cllicmappli teal Alton
To Obtain
matte (m)
squat* meters Im2)
kilogram (kg)
WE RESERVE THE RIGHT TO IMPROVE
OESION AND SPECIFICATIONS
WITHOUT NOTICE AT ANY TIME.
NOTE: PAGES 5 THROUGH 52 OF THIS CATALOG ARE AVAILABLE
AS INDIVIDUAL SHEETS FROM INDUSTRIAL ACOUSTICS COMPANY
REQUEST BY NUMBER SHOWN IN UPPER RIGHT HAND CORNER.
1)
I
1