Info re roof-top A/C units 817337~05@
KROGER FE/RE/SOS ~.¢&
o6r l 71gg6 ; ; I ¢ ~ '
FACILrlWf ~-Nt"-INE~.R~NG ~ liRAI. KSTAT~.
(817) 337-2050 (817) 337-20'$8 (817) 337=2300
FACSIMILE COVER PAGE
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F~c. E~qG ·
NUMB~ OF PA, OF.S: ~ (Lm:Zudin~
iO-1B-Igc_B 09: 2~ 817~37205~ K~OGE~ FE/RE/SOS P. 82
Rose & Associates
Flor Mound, ~ 7~28
(214) 53~7~0 m Fax (214) 53~139
August 12, 1
Mr. Jeff Krueger
The Kroger Co.
1 O0 Kroger Drive
Keller, TX 76248
Fax: 8 I?-337=2058
R=I~: S~dy ~ke ~ ~no ~hur - Roo~op AC Units - Noise
De~r Jeff:
To evaluate r~ucin8 the noise in the adjacent ~idential ~mmunity ~om the two roo~
mounted pac~8~ C~iet air cond~t~o~ng u~tn, we ~nited
necess~ noi~ m~urements
re~mmend the ~oiiowln~ to re~u~ the ~oi~ to the ~mmu~ ~om this equipment.
This air ~ndhio~n8 u~t is dominnt~ ~th noi~ ~om primely the reeipr~atin~
compressors and s~ond~ly the condenser ~s, both o~whi~h ~e on the open end o~ the
unit. Recomend~ ia to place an a~usti~ s~ be~e~ the unit ~d the eommuni~.
T~s is most effective if it is placed as clo~ to the ~it ~ pr~ticai. Place the acoustical
screen as close to the unit ~ m~nten~ce
suggested. I~ more th~ 4' is required For ~nte~ce, in~! the panels so they are
removable when substantial m~ntenance is require. Do not pl~ the screen neet the
edge of the roo~ or on the Ground. The screen should ~end ~ross the major f~ of the
u~t that ~aces the co--unity and ~ap the u~t on both ~ds. The back side o~ 1he unit
mGy be le~ open. Conside~ng the ~ndition that the two ~mpf~sots ~e the major
source of annoy~ce due to their r~py, tonal sound charn~er, The p~els should ~tend
1' b~ond the unit both in heist and on the ends. T~I ~ll rea~t in ~ 8.5' high screen.
This screen should go down clo~ to the roo~, ~th no more that a 1-2" gap, but it does
not need to ~ flMh~ into the roo~
T~s acoustic~ screen must have two charact~stics. It must be solid, imperious and
relatively massive to ~nction as a ba~er and block the sound ~om Going through it. It
must also have ~ sound abso~tive face on the equipm~t side to prevent the sound ~om
being reflected off the scr~n back onto the ~r ~nditionin8 u~t ~nd then rejected over
thc ~op o~the screen.
· Nolse · Acoustics · VlbrGtion · Masking
August 12 1996 (2)
Specific products a4-e in the marketplace with such characteristics for this kind of'
application. Recomended is the Industrial Acoustics Corporation product I~aown as Noise
Shield Barriers type FSS. The local representative is Baa'tos, Inc., Mr. Vv'ayne $chindter.
This is a steel product with a paint finish available. When ordering be sure to indicate that
it is For an outdoor application and require that the insulation be encapsulated in a plastic
film so it does not soak up water.
These acoustical panels can also serve a visual screen fhnction. Ifa different appearance is
desired, the acoustical panels can bc hidden behind a separate visual screen.
10-1.~-199~ 09:24 817:~72058 KRO(JER FE/RE/SO$
With such a installation we would expec~ a noticeable reduction in the sound from the two
packaged air conditioning units
Please call with any questions.
Very t2/Y y°urs' j
TR:kd
Attachment
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AU6--12--96 MON 0~ :31 ROSE
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I~ TURRINE POWE~ PgANT$ Pd.MPING .STATIONS COOuNG TCV;JER.S
~TdC N01SE C0NTROL YSTEMS .y
INDUSTRIAL ACOUSTICS COMPANY
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AUG-- '_ 2--96 ~10.'-; 09 : ~$ ROSE 214~$9G 15g P. 0
noishieidI'
TRANSPORTATION
.. SOUND BARRIERS
.
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- .,'1~
S~UND -~'! ; ~.; f £ .
OR. ALUMINUM "
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AUG--12--.96 MOH ~'9:41 ROSE :214~$~1~1~9 Po le~5
NOISHIELD° TRANSPORTATION SOUND BAR
highways · railroads · buses ° airports s
Freestanding Barriers ~'~.~
Nolahleld Type FS and iFS. barriers, sound absorptive on one side and
two sides respectively, combine sound transmission toss and sound absorb-
Ir~g properties in a single wall system.
- Excellent Iow-frequency absorption tot truck and bus noise roflectlons
~RI~ .--- _ _ - Laboratory-rated sound absorption on one or both sides NRC 1.0
. - t.ow weight rugged construction - ideal for highway/bridge conslruclion
..... '['''' [ - - - - 5-inch-thick (127mm) modular metal panel system
· ' -:.--~ ..]: - - Abuse resistent steel or aluminum constr~ction
, "-~.~' : - - Withstands wind loads of 110 mph (177km/hr) in accordance with The
"i%~. ~ American Association of State Highway and Transpo~lation Officials,
" -. ~,~.. -- AAHSTO, Design Standards - designs for higher wind loads are available.
~ '~'~:,~...,,~ - Readily relocated in the event ut highway widening protects
8o.ton, Mllsachu~ettl l
.... CON FIGURATION
"' I s,.,
I~/II~ {kg/m~) ! ~unl~m T~-p~8/A 4.5 (22.0) T_~_F_S/A
Freestanding Fr~l~t~ncling
USE alongside highwayS, b,~l~ n highways__ ~ ~1~
rall~, eubwayI, &l~:)o~s Mhd Ironleg.e. rossi
Milwaukee, Wisconsin
.. , . ., ~ ::/:~'~."~-..,"'"'~
.~ '.":' ; . ....~- . .'-' .
. . . · ~ .... .,. :....:.; ;...~ Noishleld Tran~poTlatlon Barriers are rated iTC
'~ '~'"";'~ "(~i 31 (aluminum) and. STC 38 (steel) with sound
transmission 10M values fully compatible with
:':'.'.'J~:': . "- typical barrier ped0h~ance.
"'"~" ?~' "" . A(~oMsti(~ All Noishleid Barriers Incorporate sound ab-
sorblng materials to prevent noise reflections
. j.. Performance which degrade sound barrier performance.
· · Type C panels are used to clad new or existing
Characteristics non-absorbing barriers while Type FS and SFS
are freestanding walls which combine sound
transmission loss and high sound absorption
· ~'~' ratings.
Frldley, Mlnne.ota
Nolshield Barriers are ~inished with a tough, thermosetting, polyester powder coating which
is not damaged by the harsh cleaning chemicals used to remove spray paint graffiti. A wide
variety of standard colors allow~ complementary decorative schemes and attractive
Noishleld designs ~o reduce apparent wall height as perceived by community and motorists.
Barrier - Accelerated weathering per ASTM G 23 for 2,400 hours with chalking less than No. 8
Finiohes rating (ASTM D 659) and color change~ lees than 5 NBS u~its (ASTM D 2244).
-Sett spray tested for checking, blistering, loss of adhesion, or evidence ol corrosion per
ASTM B 117 for more than 4,000 houll without coating failure.
~U~--1:~--96 Pit_iH 89:47 ROSE 21457~159~ - P- 01
;RS TECT COMMUNITIES AGAINST NOISE
rail ,, ;les · subways · elevated systems...
~ So~nd Absoq3tlve Treatment for Reflective Barriers .~.:.
Noi!
leld Type C cladding panels are sound absorptive to control retlecf~ons
A ~ new wood, concrete, or steel barriers to control reflected noise ';: ~-~.-"-":-'!~.'". ~-"'"~
In the munity
Retrofit barriers to eliminate or miligale noise corn
- Low weight ed construction - ideal for relroflt
- Noise NRC 1,0 '
- 21/2 in, ,elal panel system
- Abuse resistant ,lumlnum constructi
. Individual panels easily
~I-,
Apply Io new or retrofit emsling
) ~ USE : brick, conceals, siena. Or olher non-ab$0~.tlYewall~ X
&
Chicago, III1m345
.%
S<~und Ablerl),,o~ Coetliclenla
Type~ C and SFS 10.24 10.95 '1.~3l 0.~9 O.94 ~0.861 1.0 _ ~' '
Ail data in acco~lance vN~h ~$0 Standa~l 3~4, ASTM C 423, and E 4f3 w~ 1~0 ft~
(lt.15~1) test sample In tO, O00 A0 (2~3m~) reverberahon room. Type A mounting. ':
Coefflclenta gr~aler th~l f.O resufl f~om edge diffraction alf~cf.~. O0 J301 use sound
absorption values g~eeter then.O 95, ~ .... ·
East SI. Louis. ;lllno'$
Existing rellectNe barrier 7 ~ ....... ' '
Noishield Barriers can be tale- ..~,...?
cared In the event of highway
widening pmjecls without loss ! ~ ."" :' ,
Barrier easily changed with simple ad- --.-
lO-t~-igG~ 09:29 817~'~20~8 KR,i.G~:~ FF/C.'.E/SO$
Nolshleld' Transpo~ation Sound Banisr
A, GeNiAL D. MAT~IAL
1. Noishmld Barrier parleys shall be manufactured ~y 1, Ail exte~ ~ ~a~a ~all ~ prot~ed f(om a~-
Industn31 ~ouslicS C~panT, I~., 1160 ~merce Avenue, ~er~ ~, ~a~, e~sure to m~d ~lis, and
Bronx, N~ YO~ 10462-5599. f heDamer $na~ oelaDnca~eoa~ v~ml ~u~ ~udm~ ~y .~..~ vi. II.,,,,.~.U~ ~, ~1~1~
~n~tall~d in s~h a ;~nner AS I0 provMe the ac~st~l ~dor- powder
;;qd;~v. du, ub,lily, .,,d d.~;~,, ,'~uh~mente ~e=ificd below. 2. All p:~ co~l~ ~all ~ ;~I;H fnr
B. COM~NENT ACOUSTICAL P~FORMANC~ weglh~Jno in ~~ ~lh ASTM G 23 in a NVLAP-~iti~
~. Manulaclurer shall ;umish ce~di~ sound Iransmiss~on inde~nO~( te.~ la~. After 2.4~ hou~ ex.sure
loss and abs~ion coMficient ~la taken I~ barn~ panels in a ~mples ~ n~ e~it c~lki~ greater ~an No. 8 ral~ ~r
revo~erahon r~m of at least 10.~ fi3 (283m~) volume a~ ASTM D 659 or co~ ~ange~ ~ter than 5 N8S units ~r
satisyng ap~icable ~io~ of ASTM ~ciflcet~ons E 90 a~ ASTM D 2244.
~. All ~1 ~F~fal~ ~h~ll ~ I,,t~ f~ ~r~n rffi~-
C 423. Barrier ~nels s~ll meal or exceed the tOl~OW~ng ac~s,c
~nce in ~e w~ ASTM B 117 ~ a NV~P~edili~
~at~ s~m ~U ~t faa ~e to ch~t~, bRstering. ~s of
S~nd Transmilston Lois Dali, dB adhes~. ~ e~e~ ol C~mSi~ al~g t~ ~ges ot the
OctaveBe~mer ~125 2~5~ 1K~ 2K [ ~K STC
~m~ea. ~re li~8, or ~r ~f~.
~.~Ueflcy, HZ
T~es F~ and SFS/S" ~ 18 ~ 40 37 44 42 ~ 1. Acoua~alN ab~l~e materials Shall ~ in~l,
~11 ~ta in ~a~ ~h ASTM E.~ ~D E 413. r~t~l, ve~f. ~d hy~i~
2. The abso~t~e ~t~a~ ~all be M a t~ wht~ s~s
s~niF~nt Nm~m~ ~te~mb~ or ~ ~ ac~st~al
~und Abeo~flllon C~leme due ~o ~-te~ outd~r ex,sum.
Oct~v, Band Center 12~ I 2~ ~ 1K 2K [ 4K NRC 3. Ab~tNe ~le~le ~all in no way be mech~lca~ fas-
~$. 1.31 ~-~ 1 ~ t .~ 0.ffi0,~ 0.~ 1.0 ' len~ to a~ ~dl~ of the ~rrier pa~ls and In no way ~v~r~
~es C and SFS c0.24 5 1.13 ~0.99 0.94}0~' ~ or ta~d wilhin Ihe panel stem in ~ a manner t~t woul~
__ result in ~y d~r~al~n of aCouMi~l ~Uon.
A8 oata in a~o~a~ ~ ASTM C 4~3 ANO E 4 t3.
F. PBEL i~EB~LY AND IN$TAL~TIO~
2. Burner ~nels instal]~ on only one stale of a r~d shall ~ 1. The ~arrier wall s~ ~ as~mDted by Iowe~ng cons~u-
~es~ed ID prevenl sou~ mfl~tions from t~ Darner Irom bye pan~s ~en ~ng~ steel beam ~s with ~ aD-
so~tive su~a~ f~ r~way. C~s~live panels ~11 nest
increas;ng no,se in Ihe ~mmun~ abuili~ the r~dway op~sde into o~ ~er in s~ a ~nner As to precise 'line~f-s~ht'
Ihe Darrier.
3. Barrier pa~ls inslall~ ~p~ile each ~lher Shall be sou~ ge~ ot ~nin~ t~ the ~rrier.
;bsorbin9 to mimmize degradation in b~rier e~tivene~ 2. I~ual ba~ ~els ~all not ~ bored, weM~.
caused by acouslical reve;~rafion baleen the ~rriers. othe~se fastened to e~h olh~ or to the slruclural
4. Barrier panels installed ~ highways end fron/a~
roads shall ~ sou~ abso;plive ~ ~th siOes. 3. I~ivMual ba~i~ ~els shall ~ removable and
5. All hamer panels s~ll ~ ~und 8bs~ to minimize able. Pane~ ~811 ~ desig~ to De in,ailed, re~ved, or
degradation in hamer effeclNeness caused by ~usl~cal raver- mplac~ by ~o ~re t~n l~e ~le using no s~al [~ls.
~ration between the baf~rs and other stalio~ or mo~ shall De s~wn t~t. ~u~ ~fe~ ~ other c~;idcmt~o man
date [he use of m~am~l equipment to rai~ ancot Dwer
sudaces on or near the roadway, indlV~Ual ~a~18 into ~il~. lhe I~ capacity of that eq~ent
C. MATERIAL SPECIFICATIONS ne~ nOI exc~d 200 ID (91~g).
~. Panels weighls shall ~t exce~ (~l~t one): 4. The ~m wall shNI be desig~ to withstand s~ifi~
wind
5. 8arriem S~II ~
~ypp. ~ .Wqigh~,]~m~ Ty~ . .~9~ ~_(k~[. t~tell~ ~/hal panel sudaces faang
- _ .-. .............. ~th t~ hi, way a~ the ~nily are ~d
$r~ ~ 7.5 {~.~ SF~A ~2 (25.4) ~th ~ ~gm~d~
submiBed to ved~ ~al ba~er panels ~d sire/mai
~ Pnn~l ~.dn~P.q nhn~ hn mndn nf Aluminum A~ 5052 or ~ m~t Ih~ w~d-~d ~J~l~n~ In ;~mda~e ~th
shall be shown IO have ~en u~d in outdo~ ~ise control 7. St~ural su~o~ ~ts shell be ~al~ with a c0r~osion
systems in su~ a manner as to successfully ~ot~l and main- res~iant finish. Weathemblllly, ~d ~lor slability shall ~ corn-
tarn Ihe sou~ abstain ~pabi~ly ot acOUStic-hll malenals, palible wilh Ihe r~ish on the ~r ~1 sud~es.
INDUS IAL lCOUSi
~e~ ,~, , INCORPORA ~O
SINCE 1949 -- LEADERS IN NOISE CONTR~ ~ Wayne Schindler
UNI~D ~TATe~ ~O KI~
11~ COhErE AVEN~ CENTR~ ~