23 05 48.00 40.pdf

Ti nker AFB, OK TAFB Techni cal Spr ci f i cat i ons 2019

SECTI ON 23 05 48. 00 40

VI BRATI ON AND SEI SMI C CONTROLS FOR HVAC PI PI NG AND EQUI PMENT

PART 1 GENERAL

Sect i on 23 00 00 AI R SUPPLY, DI STRI BUTI ON, VENTI LATI ON, AND EXHAUST SYSTEMS appl i es t o wor k speci f i ed i n t hi s sect i on t o t he ext ent appl i cabl e.

Sect i on 23 05 15 COMMON PI PI NG FOR HVAC appl i es t o wor k speci f i ed i n t hi s sect i on t o t he ext ent appl i cabl e.

1. 1 REFERENCES

The publ i cat i ons l i s t ed bel ow f or m a par t of t hi s speci f i cat i on t o t he ext ent r ef er enced. The publ i cat i ons ar e r ef er r ed t o wi t hi n t he t ext by t he basi c desi gnat i on onl y.

ACOUSTI CAL SOCI ETY OF AMERI CA ( ASA)

ASA S2. 71 ( 1983; R 2006) Gui de t o t he Eval uat i on of Human Exposur e t o Vi br at i on i n Bui l di ngs

AMERI CAN SOCI ETY OF HEATI NG, REFRI GERATI NG AND AI R- CONDI TI ONI NG

ENGI NEERS ( ASHRAE)

ASHRAE HVAC APP I P HDBK ( 2011) HVAC Appl i cat i ons Handbook, I - P Edition

ASHRAE HVAC APP SI HDBK ( 2015) HVAC Appl i cat i ons Handbook, SI Edition

NATI ONAL ENVI RONMENTAL BALANCI NG BUREAU ( NEBB)

NEBB PROCEDURAL STANDARDS ( 2005) Pr ocedur al St andar ds f or TAB ( Test i ng, Adj ust i ng and Bal anci ng) Envi r onment al Syst ems

1. 2 ADMI NI STRATI VE REQUI REMENTS

Wi t hi n t en wor ki ng days of Cont r act Awar d, submi t equi pment and per f or mance dat a f or v i br at i on i sol at or syst ems i ncl udi ng equi pment base desi gn; i ner t i a- bl ock mass r el at i ve t o suppor t equi pment wei ght ; spr i ng l oads and f r ee, oper at i ng, and sol i d hei ght s of spr i ng; spr i ng di amet er s;

nonmet al l i c i sol at or l oadi ng and def l ect i on; di st ur bi ng f r equency; nat ur al f r equency of mount s; def l ect i on of wor ki ng member ; and ant i c i pat ed amount of physi cal movement at t he r ef er ence poi nt s.

Ensur e t he dat a i ncl udes i nf or mat i on on t he f ol l owi ng:

a. Mount i ngs

b. Bases

c. I sol at or s

d. Fl oor - Mount ed Pi pi ng

Apr i l 2019 Page 1 SECTI ON 23 05 48. 00 40

e. Ver t i cal Pi pi ng

Fi ve wor ki ng days pr i or t o commencement of i nst al l at i on, submi t i nst al l at i on dr awi ngs f or v i br at i on i sol at or syst ems i ncl udi ng equi pment and per f or mance r equi r ement s.

I ndi cat e wi t hi n out l i ne dr awi ngs f or v i br at i on i sol at or syst ems, over al l physi cal f eat ur es, di mensi ons, r at i ngs, ser vi ce r equi r ement s, and wei ght s of equi pment .

1. 3 SUBMITTALS

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or Cont r act or Qual i t y Cont r ol appr oval . Submi t t al s wi t h an " S" ar e f or i ncl usi on i n t he Sust ai nabi l i t y Not ebook, i n conf or mance t o Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG.

Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00 SUBMI TTAL

PROCEDURES:

SD- 02 Shop Dr awi ngs

I nst al l at i on Dr awi ngs; G

Out l i ne Dr awi ngs; G

SD- 03 Pr oduct Dat a

Equi pment and Per f or mance Dat a; G

I sol at or s; G

SD- 06 Test Repor t s

Type of I sol at or ; G

Type of Base; G

Al l owabl e Def l ect i on; G

Measur ed Def l ect i on; G

1. 4 QUALI TY CONTROL

Ensur e al l v i br at i on- cont r ol appar at us i s t he pr oduct of a s i ngl e manuf act ur i ng sour ce, wher e possi bl e. Human exposur e l evel s shoul d be consi der ed usi ng ASA S2. 71 and NEBB PROCEDURAL STANDARDS.

PART 2 PRODUCTS

2. 1 SYSTEM DESCRI PTI ON

Schedul ed i sol at i on mount i ng i s i n i nches and i s a mi ni mum st at i c deflection.

Spans r ef er r ed t o i n par agr aph EQUI PMENT, means l ongest bay di mensi on.

Det er mi ne exact mount i ng s i zes and number of i sol at or s by t he i sol at or manuf act ur er based on equi pment t hat wi l l be i nst al l ed. Check equi pment

Apr i l 2019 Page 2 SECTI ON 23 05 48. 00 40 r evol ut i ons per mi nut e ( r pm) and spr i ng def l ect i ons t o ver i f y t hat r esonance cannot occur .

2. 1. 1 Desi gn Requi r ement s

Desi gn f or v i br at i on i sol at i on usi ng ASHRAE HVAC APP I P HDBK, Chapt er 48, as appl i cabl e t o t he f ol l owi ng sect i ons.

2. 1. 1. 1 Mountings

Pr ovi de t he f ol l owi ng mount i ngs:

Type A: Composi t e pad, wi t h 0. 25- i nch t hi ck el ast omer t op and bot t om l ayer s, mol ded t o cont ai n a pat t er n wi t h nonsl i p char act er i st i cs i n al l hor i zont al di r ect i ons. El ast omer l oadi ng i s not t o exceed 40 pounds per squar e i nch ( psi ) . Ensur e mi ni mum over al l t hi ckness i s 1 i nch. Maxi mum def l ect i ons up t o 0. 25- i nch ar e al l owed. Type B: Doubl e r ubber - i n- shear or el ast omer - i n- shear wi t h mol ded- i n st eel r ei nf or cement i n t op and bot t om.

Maxi mum def l ect i ons up t o 0. 50- i nch ar e al l owed. Type C: Fr ee- st andi ng l at er al l y st abl e open- spr i ng t ype f or def l ect i ons over 0. 50- i nch, wi t h bui l t - i n bear i ng and l evel i ng pr ovi s i ons, 0. 25- i nch t hi ck Type A base el ast omer pads, and accessor i es. Ensur e out si de di amet er of each spr i ng i s equal t o or gr eat er t han 0. 9 t i mes t he oper at i ng hei ght of t he spr i ng under r at ed l oad. Type F: Combi nat i on spr i ng and r ubber - i n- shear or el ast omer - i n- shear st eel f r amed f or hanger - r od mount i ng, wi t h mi ni mum t ot al st at i c def l ect i on of 1- i nch. 2. 1. 1. 2 Bases

Pr ovi de t he f ol l owi ng bases:

Type U: Uni t i sol at or s wi t hout r ai l s, st r uct ur al - st eel bases, or i ner t i a bl ocks. Type R: Rai l s, connect ed or di sconnect ed mi l l - r ol l ed st r uct ur al st eel , of suf f i c i ent di mensi on t o pr ecl ude def l ect i on at mi dpoi nt of unsuppor t ed span i n excess of 1/ 1, 440t h of t he span bet ween i sol at or s, power t r ansmi ssi on, component mi sal i gnment , and any over hung wei ght . Wher e Type R bases ar e speci f i ed and t he equi pment pr oposed r equi r es addi t i onal base suppor t , use a Type S base. Type S: St r uct ur al - st eel bases common t o a suppor t ed assembl y, made f r om wel ded- j oi nt mi l l - r ol l ed st r uct ur al st eel wi t h c l osed- per i met er conf i gur at i on, i sol at or s at t ached t o out r i gger suppor t s.

Ensur e hei ght of st eel member s i s suf f i c i ent t o pr ovi de st i f f ness r equi r ed t o mai nt ai n equi pment manuf act ur er ' s r ecommended al i gnment and dut y ef f i c i ency of power - t r ansmi ssi on component s. Ensur e hei ght of st eel member does not r esul t i n member def l ect i on at mi dpoi nt of unsuppor t ed span of mor e t han 1/ 1, 440t h of t he span bet ween i sol at or s. Mi ni mum hei ght i s 5- i nches.

Type CI B: Pr ovi de concr et e i ner t i a bl ocks common t o t he ent i r e assembl y, wi t h wel ded- j oi nt const r uct i on, mi l l - r ol l ed st r uct ur al - st eel per i met er s, wel ded- i n No. 4 r ei nf or ci ng bar s 8- i nches on cent er each way near t he bot t om of t he bl ock, out r i gger - i sol at or mount i ng pr ovi s i ons, anchor bol t s. Fi l l wi t h 3, 000 psi cur ed- st r engt h concr et e.

Conf i gur e r ect angul ar i ner t i a bases t o accommodat e equi pment suppor t ed.

Ensur e mi ni mum t hi ckness of i ner t i a base, i n addi t i on t o pr ovi di ng sui t abl e mass, i s suf f i c i ent t o pr ovi de st i f f ness t o mai nt ai n equi pment manuf act ur er ' s r ecommended al i gnment and dut y ef f i c i ency of power - t r ansmi ssi on component s, and i s suf f i c i ent t o r esul t i n base def l ect i on at mi dpoi nt of unsuppor t ed span of not mor e t han 1/ 1, 440t h of t he span bet ween i sol at or s. Ver i f y mi ni mum t hi ckness, t he

Apr i l 2019 Page 3 SECTI ON 23 05 48. 00 40 pr ecedi ng r equi r ement s not wi t hst andi ng, i s 8 per cent of t he l ongest base di mensi on.

Ensur e pumps wi t h f l exi bl e coupl i ngs do not have i ner t i a base l ess t han 8- i nches t hi ck, and t he mi ni mum mass of concr et e i ner t i a bl ock i s equal i n wei ght t o suppor t ed equi pment .

2. 2 EQUIPMENT

Vi br at i on i sol at i on desi gn per ASHRAE HVAC APP I P HDBK, Chapt er 37, .

2. 2. 1 Cent r i f ugal Wat er Chi l l er Package Locat i ons

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

Hermetic A-U-0.25 B-U-0.50 D-S-1.75 D-S-2.5

Open Type B-U-0.38 D-U-1.0 D-CIB-1.75 D-CIB-2.5

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 2 Reci pr ocat i ng Wat er Chi l l er Package Locat i ons

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

500 t o 750 r pm D-U-1.0 D-U-1.5 D-S-2.5 D-CIB-2.75

750 r pm and Over D-U-1.0 D-U-1.0 D-R-2.0 D-CIB-2.5

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 3 Absor pt i on Wat er Chi l l er Package Locat i ons

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

Standard A-U-0.25 D-U-1.0 D-U-1.5 D-U-2.75

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

Apr i l 2019 Page 4 SECTI ON 23 05 48. 00 40

2. 2. 4 Reci pr ocat i ng Compr essor / Condenser Locat i ons

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

500 t o 750 r pm D-U-1.0 D-U-1.5 D-U-2.5 D-CIB-2.75

750 r pm and Over D-U-1.0 D-U-1.0 D-U-2.0 D-CIB-2.5

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 5 Reci pr ocat i ng Ref r i ger at i on Compr essor Locat i ons

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

500 t o 750 r pm C-U-1.0 C-U-1.5 C-S-2.5 C-CIB-2.75

750 r pm and Over C-U-1.0 C-U-1.0 C-R-2.0 C-CIB-2.5

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 6 Cent r i f ugal Pump Locat i ons

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

Close-couple t hr ough 5 hp

None -R-0.35 C-S-1.0 C-S-1.0

Bedplate-mounted t hr ough 5 hp

None C-CIB-1.0 C-CIB-1.5 C-CIB-1.75

7- 1/ 2 hp None C-CIB-1.0 C-CIB-1.75 C-CIB-2.5

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 7 Ai r - Cool ed Condensi ng Uni t Locat i ons

TYPE

EQUIPMENT

20- FOOT ROOF- SPAN

PROVISIONS*

30- FOOT ROOF- SPAN

PROVISIONS*

40- FOOT ROOF- SPAN

PROVISIONS*

Thr ough 5 hp over 900 rpm

B-U-0.5 D-U-1.0 D-U-1.75

Over 5 hp t o 500 r pm B-U-0.5 D-U-1.75 D-U-2.5

500 r pm and over B-U-0.5 D-U-1.0 D-U-1.75

Apr i l 2019 Page 5 SECTI ON 23 05 48. 00 40

TYPE

EQUIPMENT

20- FOOT ROOF- SPAN

PROVISIONS*

30- FOOT ROOF- SPAN

PROVISIONS*

40- FOOT ROOF- SPAN

PROVISIONS*

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 8 Low- Pr essur e Suspended Ai r - Handl i ng Uni t ( AHU) Locat i ons

Vi br at i on- i sol at i on pr ovi s i ons appl y t o cei l i ng- suspended Ai r Movi ng and Condi t i oni ng Associ at i on Cl ass A packaged cent r al - st at i on uni t s.

TYPE

EQUIPMENT

20- FOOT ROOF- SPAN

PROVISIONS*

30-FOOT

ROOF-SPAN

PROVISIONS*

40-FOOT

ROOF-SPAN

PROVISIONS*

Thr ough 5 hp F-U-1.0 F-U-1.0 F-U-1.0

7- 1/ 2 hp and over 250 t o 500 r pm

F-U-1.75 F-U-1.75 F-U-1.75

500 r pm and over F-U-1.0 F-U-1.25 F-U-1.55

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 9 Low- Pr essur e AHU Locat i ons

Vi br at i on- i sol at i on pr ovi s i ons appl y t o f l oor - mount ed Ai r Movi ng and Condi t i oni ng Associ at i on Cl ass A packaged cent r al - st at i on uni t s.

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

Thr ough 5 hp B-U-0.35 C-U-1.0 C-U-1.0 C-U-1.0

7- 1/ 2 hp and over 250 t o 500 r pm

B-U-0.35 C-U-1.75 C-U-1.75 C-U-1.75

500 r pm B-U-0.35 C-U-1.0 C-U-1.5

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 10 Medi um- and Hi gh- Pr essur e AHU Locat i ons

Vi br at i on- i sol at i on pr ovi s i ons appl y t o f l oor - mount ed Ai r Movi ng and Condi t i oni ng Associ at i on Cl asses B and C packaged cent r al - st at i on uni t s.

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

Thr ough 20 hp 250 t o 300 r pm

B-U-0.35 C-U-2.5 C-U-2.5 C-U-3.5

Apr i l 2019 Page 6 SECTI ON 23 05 48. 00 40

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

300 t o 500 r pm B-U-0.35 C-U-1.75 C-U-1.75 C-U-2.5

500 r pm and over B-U-0.35 C-U-1.0 C-U-1.0 C-U-1.75

Over 20 hp 250 t o 300 r pm

B-U-0.35 C-U-2.5 C-CIB-3.5 C-CIB-3.5

300 t o 500 r pm B-U-0.35 C-U-2.5 C-CIB-2.5 C-CIB-3.5

500 r pm and over B-U-0.35 C-U-1.0 C-CIB-1.75 C-CIB-2.5

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 11 Ai r - Movi ng Devi ce Locat i ons

Vi br at i on- i sol at i on pr ovi s i ons appl y t o housed or unhoused f r ee- st andi ng f ans of any pr essur e r at i ng, l ocat ed i n f i el d- er ect ed, f i el d- or f act or y- f abr i cat ed cent r al - st at i on uni t s, and unhoused r et ur n- ai r suppl y- ai r ser vi ce.

TYPE

EQUIPMENT

BASEMENT

BELOW-GRADE

PROVISIONS*

ON/ABOVE

GRADE

20-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

30-FOOT

FLOOR-SPAN

PROVISIONS*

ON/ABOVE

GRADE

40-FOOT

FLOOR-SPAN

PROVISIONS*

Thr ough 20 hp 250 t o 300 r pm

B-U-0.35 C-S-2.5 C-S-2.5 C-S-3.5

300 t o 500 r pm B-U-0.35 C-S-1.75 C-S-1.75 C-S-2.5

500 r pm and over B-U-0.35 C-S-1.0 C-S-1.5 C-S-1.75

Over 20 hp 250 t o 300 r pm

B-U-0.35 C-S-2.75 C-CIB-3.5 C-CIB-5.0

300 t o 500 r pm B-U-0.35 C-S-1.75 C-CIB-2.5 C-CIB-3.5

500 r pm and over B-U-0.35 C-S-1.0 C-CIB-1.75 C-CIB-2.5

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 12 Cr oss- Fl ow Cool i ng Tower Locat i ons

TYPE

EQUIPMENT

20- FOOT ROOF- SPAN

PROVISIONS*

30-FOOT

ROOF-SPAN

PROVISIONS*

40-FOOT

ROOF-SPAN

PROVISIONS*

Package under t ower base t o 500 r pm

B-U-0.35 D-U-2.0 D-U-2.5

Apr i l 2019 Page 7 SECTI ON 23 05 48. 00 40

EQUIPMENT

20- FOOT ROOF- SPAN

PROVISIONS*

30-FOOT

ROOF-SPAN

PROVISIONS*

40-FOOT

ROOF-SPAN

PROVISIONS*

500 r pm and over B-U-0.35 D-U-1.0 D-U-1.75

Fi el d er ect ed under t ower base; al l r pm

Under mechani cal equi pment suppor t i ng f r ame t o 500 r pm

500 r pm and over

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 13 Bl ow- Thr ough Cool i ng Tower Locat i ons

TYPE

EQUIPMENT

20- FOOT ROOF- SPAN

PROVISIONS*

30-FOOT

ROOF-SPAN

PROVISIONS*

40-FOOT

ROOF-SPAN

PROVISIONS*

Under t ower base t o 500 r pm

B-U-0.35 C-S-2.5 C-S-3.5

500 r pm and over B-U-0.35 C-S-1.0 C-S-1.75

* TYPE OF MOUNTI NG, BASE, AND MI NI MUM DEFLECTI ON I N I NCHES

2. 2. 14 Pi pe And Duct Vi br at i on I sol at i on

Type G: Pr ovi de i sol at or s wi t h i n- ser i es cont ai ned st eel spr i ngs and pr ef or med f i br ous- gl ass or chl or opr ene- el ast omer el ement s f or connect i ng t o bui l di ng- st r uct ur e at t achment s. Load devi ces by suppor t ed syst em dur i ng oper at i ng condi t i ons t o pr oduce a mi ni mum spr i ng and el ast omer st at i c def l ect i on of 1- i nch and 3/ 8- i nch, respectively.

Type H: Pr ovi de i sol at or s wi t h cont ai ned chl or opr ene- el ast omer el ement s f or connect i ng t o bui l di ng- st r uct ur e at t achment s. Load devi ces by suppor t ed syst em dur i ng oper at i ng condi t i ons t o pr oduce a mi ni mum el ast omer st at i c def l ect i on of 3/ 8- i nch.

Type J: Pr ovi de i sol at or s wi t h el ast omer s mount ed on f l oor - suppor t ed col umns or di r ect l y on t he f l oor . Load devi ces by suppor t ed syst em dur i ng oper at i ng condi t i ons t o pr oduce a mi ni mum el ast omer st at i c def l ect i on of 3/ 8- i nch.

2. 2. 14. 1 Fl oor - Mount ed Pi pi ng

Type K: Pr ovi de i sol at or s wi t h spr i ngs mount ed on f l oor - suppor t ed col umns or di r ect l y on t he f l oor . Load devi ces by suppor t ed syst em dur i ng oper at i ng condi t i ons t o pr oduce a mi ni mum spr i ng st at i c def l ect i on of 1- i nch.

Apr i l 2019 Page 8 SECTI ON 23 05 48. 00 40

2. 2. 14. 2 Ver t i cal Pi pi ng

Type L: Pr ovi de i sol at or s whi ch ar e pi pe base- suppor t devi ces wi t h one or mor e cont ai ned st eel spr i ngs. Load devi ces by suppor t ed syst em dur i ng oper at i ng condi t i ons t o pr oduce a mi ni mum st at i c def l ect i on of 1- i nch. Equi p devi ces wi t h pr ecompr essi on and ver t i cal - l i mi t f eat ur es, as wel l as a mi ni mum 1/ 4- i nch t hi ck el ast omer sound pad and i sol at i on washer s, f or mount i ng t o f l oor .

Type M: Pr ovi de i sol at or s whi ch ar e el ast omer mount ed basepl at e and r i ser pi pe- gui de devi ces, wi t h cont ai ned doubl e act i ng el ast omer el ement s whi ch under r at ed l oad have a mi ni mum st at i c def l ect i on of 3/ 8- i nch. Si ze i sol at or t o accommodat e t her mal i nsul at i on wi t hi n t he st at i onar y gui de r i ng.

2. 3 MATERIALS

Ensur e r ubber i s nat ur al r ubber and el ast omer i s chl or opr ene. Shor e A dur omet er measur ement of bot h mat er i al s and r ange bet ween 40 and 60.

I nor gani c mat er i al s such as pr ecompr essed, hi gh- densi t y, f i br ous gl ass encased i n a r esi l i ent moi st ur e- i mper vi ous membr ane may be used i n l i eu of speci f i ed nat ur al r ubber and el ast omer s. Wher e t hi s subst i t ut i on i s made, ensur e speci f i ed def l ect i ons ar e modi f i ed by t he manuf act ur i ng sour ce t o accommodat e physi cal char act er i st i cs of i nor gani c mat er i al s and t o pr ovi de equal or bet t er v i br at i on i sol at i on.

Ensur e weat her - exposed met al v i br at i on- i sol at or par t s ar e cor r osi on pr ot ect ed. Chl or opr ene coat spr i ngs.

2. 4 TESTS, I NSPECTI ONS, AND VERI FI CATI ONS

Submi t t est r epor t s f or t est i ng v i br at i on i sol at i on f or each t ype of i sol at or and each t ype of base. Meet r ef er enced st andar ds cont ai ned wi t hi n t hi s sect i on. I ncl ude i n t est r epor t s al l owabl e def l ect i on and measur ed def l ect i on al so meet i ng r ef er enced st andar ds wi t hi n t hi s sect i on.

PART 3 EXECUTI ON

3. 1 INSTALLATION

I nst al l equi pment i n accor dance wi t h manuf act ur er ' s r ecommendat i ons.

Ensur e r ai l s, st r uct ur al st eel bases, and concr et e i ner t i a bl ocks ar e r ai sed not l ess t han 1- i nch above t he f l oor and ar e l evel when equi pment suppor t ed i s under oper at i ng l oad.

Ensur e v i br at i on- i sol at i on i nst al l at i on and def l ect i on t est i ng af t er equi pment st ar t - up i s di r ect ed by a compet ent r epr esent at i ve of t he manufacturer.

3. 2 FI ELD QUALI TY CONTROL

3. 2. 1 Test s and Repor t s

Ensur e v i br at i on- i sol at i on devi ces ar e def l ect i on t est ed. Submi t t est r epor t s subst ant i at i ng t hat al l equi pment has been i sol at ed as speci f i ed

Apr i l 2019 Page 9 SECTI ON 23 05 48. 00 40 and t hat mi ni mum speci f i ed def l ect i ons have been met . Make al l measur ement s i n t he pr esence of t he Cont r act i ng Of f i cer .

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