07 42 63.pdf

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

SECTI ON 07 42 63

FABRI CATED WALL PANEL ASSEMBLI ES

PART 1 GENERAL

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.

AMERI CAN ARCHI TECTURAL MANUFACTURERS ASSOCI ATI ON ( AAMA)

AAMA 501. 1 ( 2005) St andar d Test Met hod f or Wat er Penet r at i on of Wi ndows, Cur t ai n Wal l s and Door s Usi ng Dynami c Pr essur e

AMERI CAN I NSTI TUTE OF STEEL CONSTRUCTI ON ( AI SC)

AI SC 341 ( 2010) Sei smi c Pr ovi s i ons f or St r uct ur al St eel Bui l di ngs

AMERI CAN I RON AND STEEL I NSTI TUTE ( AI SI )

AI SI S100 ( 2012) Nor t h Amer i can Speci f i cat i on f or t he Desi gn of Col d- For med St eel St r uct ur al Members

AI SI SG03- 3 ( 2002; Suppl 2001- 2004; R 2008) Col d- For med St eel Desi gn Manual Set

AMERI CAN SOCI ETY OF CI VI L ENGI NEERS ( ASCE)

ASCE 7 ( 2010; Er r at a 2011; Supp 1 2013) Mi ni mum Desi gn Loads f or Bui l di ngs and Ot her Structures

AMERI CAN WELDI NG SOCI ETY ( AWS)

AWS A5. 1/ A5. 1M ( 2012) Speci f i cat i on f or Car bon St eel El ect r odes f or Shi el ded Met al Ar c Wel di ng

AWS D1. 1/ D1. 1M ( 2015; Er r at a 2015) St r uct ur al Wel di ng Code - St eel

AWS D1. 2/ D1. 2M ( 2014) St r uct ur al Wel di ng Code - Al umi num

ASTM I NTERNATI ONAL ( ASTM)

ASTM A1008/ A1008M ( 2015) St andar d Speci f i cat i on f or St eel , Sheet , Col d- Rol l ed, Car bon, St r uct ur al , Hi gh- St r engt h Low- Al l oy and Hi gh- St r engt h Low- Al l oy wi t h I mpr oved For mabi l i t y , Sol ut i on Har dened, and Bake Har dened

ASTM A123/ A123M ( 2013) St andar d Speci f i cat i on f or Zi nc

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( Hot - Di p Gal vani zed) Coat i ngs on I r on and St eel Pr oduct s

ASTM A36/ A36M ( 2014) St andar d Speci f i cat i on f or Car bon St r uct ur al St eel

ASTM A653/ A653M ( 2015) St andar d Speci f i cat i on f or St eel Sheet , Zi nc- Coat ed ( Gal vani zed) or Zi nc- I r on Al l oy- Coat ed ( Gal vanneal ed) by t he Hot - Di p Pr ocess

ASTM B117 ( 2011) St andar d Pr act i ce f or Oper at i ng Sal t Spr ay ( Fog) Appar at us

ASTM C273/ C273M ( 2011) Shear Pr oper t i es of Sandwi ch Cor e Materials

ASTM C920 ( 2014a) St andar d Speci f i cat i on f or El ast omer i c Joi nt Seal ant s

ASTM D1056 ( 2014) St andar d Speci f i cat i on f or Fl exi bl e Cel l ul ar Mat er i al s - Sponge or Expanded Rubber

ASTM D1308 ( 2013) Ef f ect of Househol d Chemi cal s on Cl ear and Pi gment ed Or gani c Fi ni shes

ASTM D1621 ( 2010) Compr essi ve Pr oper t i es of Ri gi d Cel l ul ar Pl ast i cs

ASTM D1622/ D1622M ( 2014) Appar ent Densi t y of Ri gi d Cel l ul ar Plastics

ASTM D1667 ( 2005; R 2011) Fl exi bl e Cel l ul ar Mat er i al s

- Pol y ( Vi nyl Chl or i de) Foam ( Cl osed- Cel l )

ASTM D2244 ( 2015a) Cal cul at i on of Col or Tol er ances and Col or Di f f er ences f r om I nst r ument al l y Measur ed Col or Coor di nat es

ASTM D2247 ( 2015) Test i ng Wat er Resi st ance of Coat i ngs i n 100% Rel at i ve Humi di t y

ASTM D2794 ( 1993; R 2010) Resi st ance of Or gani c Coat i ngs t o t he Ef f ect s of Rapi d Def or mat i on ( I mpact )

ASTM D3363 ( 2005; E 2011; R 2011; E 2012) Fi l m Har dness by Penci l Test

ASTM D4214 ( 2007; R 2015) St andar d Test Met hod f or Eval uat i ng t he Degr ee of Chal k i ng of Ext er i or Pai nt Fi l ms

ASTM D522/ D522M ( 2014) Mandr el Bend Test of At t ached Or gani c Coat i ngs

ASTM D523 ( 2014) St andar d Test Met hod f or Specul ar Gloss

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ASTM D6226 ( 2010) St andar d Test Met hod f or Open Cel l Cont ent of Ri gi d Cel l ul ar Pl ast i cs

ASTM D714 ( 2002; R 2009) Eval uat i ng Degr ee of Bl i st er i ng of Pai nt s

ASTM D822 ( 2001; R 2006) Fi l t er ed Open- Fl ame Car bon- Ar c Exposur es of Pai nt and Rel at ed Coatings

ASTM D968 ( 2015) Abr asi on Resi st ance of Or gani c Coat i ngs by Fal l i ng Abr asi ve

ASTM E119 ( 2014) St andar d Test Met hods f or Fi r e Test s of Bui l di ng Const r uct i on and Materials

ASTM E136 ( 2016) Behavi or of Mat er i al s i n a Ver t i cal Tube Fur nace at 750 Degr ees C

ASTM E1592 ( 2005; R 2012) St r uct ur al Per f or mance of Sheet Met al Roof and Si di ng Syst ems by Uni f or m St at i c Ai r Pr essur e Di f f er ence

ASTM E283 ( 2004; R 2012) Det er mi ni ng t he Rat e of Ai r Leakage Thr ough Ext er i or Wi ndows, Cur t ai n Wal l s, and Door s Under Speci f i ed Pr essur e Di f f er ences Acr oss t he Speci men

ASTM E331 ( 2000; R 2009) Wat er Penet r at i on of Ext er i or Wi ndows, Skyl i ght s, Door s, and Cur t ai n Wal l s by Uni f or m St at i c Ai r Pr essur e Di f f er ence

ASTM E84 ( 2015b) St andar d Test Met hod f or Sur f ace Bur ni ng Char act er i st i cs of Bui l di ng Materials

ASTM G152 ( 2013) Oper at i ng Open Fl ame Car bon Ar c Li ght Appar at us f or Exposur e of Nonmet al l i c Mat er i al s

ASTM G153 ( 2013) Oper at i ng Encl osed Car bon Ar c Li ght Appar at us f or Exposur e of Nonmet al l i c Materials

METAL BUI LDI NG MANUFACTURERS ASSOCI ATI ON ( MBMA)

MBMA MBSM ( 2002) Met al Bui l di ng Syst ems Manual

NATI ONAL ASSOCI ATI ON OF ARCHI TECTURAL METAL MANUFACTURERS ( NAAMM)

NAAMM AMP 500 ( 2006) Met al Fi ni shes Manual

SHEET METAL AND AI R CONDI TI ONI NG CONTRACTORS' NATI ONAL ASSOCI ATI ON

(SMACNA)

SMACNA 1793 ( 2012) Ar chi t ect ur al Sheet Met al Manual , Apr i l 2019 Page 3 SECTI ON 07 42 63

7t h Edi t i on

UNDERWRI TERS LABORATORI ES ( UL)

UL 580 ( 2006; Repr i nt Oct 2013) Test s f or Upl i f t Resi st ance of Roof Assembl i es

UL Bl d Mat Di r ( 2012) Bui l di ng Mat er i al s Di r ect or y

1. 2 DEFINITIONS

Fabr i cat ed Wal l Panel Assembl y: Met al wal l and l i ner panel s, at t achment syst em component s, mi scel l aneous met al f r ami ng, t her mal i nsul at i on, and accessor i es shop f abr i cat ed or f i el d assembl ed f or a compl et e weat her - t i ght wal l syst em.

1. 3 DESCRI PTI ON OF FABRI CATED WALL PANEL ASSEMBLY SYSTEM

Fact or y col or f i ni shed, met al wal l panel syst em wi t h conceal ed f ast eni ng at t achment . Panel pr of i l e must be embossed. I nt er i or f i ni sh of panel assembl y t o be sel ect ed by BCE.

1. 3. 1 Met al Wal l Panel Gener al Per f or mance

Compl y wi t h per f or mance r equi r ement s, conf or mi ng t o AI SI S100, wi t hout f ai l ur e due t o def ect i ve manuf act ur e, f abr i cat i on, i nst al l at i on, or ot her def ect s i n const r uct i on. Wal l panel s and accessor y component s must conf or m t o t he f ol l owi ng st andar ds:

ASTM A1008/ A1008M

ASTM A123/ A123M

ASTM A36/ A36M

ASTM D522/ D522M f or appl i ed coat i ngs UL Bl d Mat Di r

1. 3. 2 St r uct ur al Per f or mance

Maxi mum cal cul at ed f i ber st r ess must not exceed t he al l owabl e val ue i n t he AI SI or AA manual s; a one t hi r d over st r ess f or wi nd i s al l owed.

Mi dspan def l ect i on under maxi mum desi gn l oads i s l i mi t ed t o L/ 180.

Cont r act dr awi ngs show t he desi gn wi nd l oads and t he ext ent and gener al assembl y det ai l s of t he met al s i di ng. Cont r act or must pr ovi de desi gn f or member s and connect i ons not shown on t he dr awi ngs. Si di ng panel s and accessor i es must be t he pr oduct s of t he same manuf act ur er .

Pr ovi de met al wal l panel assembl i es compl yi ng wi t h t he l oad and st r ess r equi r ement s i n accor dance wi t h ASTM E1592. Wi nd Load f or ce due t o wi nd act i on gover ns t he desi gn f or panel s.

Wal l syst ems and at t achment s ar e t o r esi st t he wi nd l oads as det er mi ned by UL 580 and ASCE 7 i n t he geogr aphi c ar ea wher e t he const r uct i on wi l l t ake pl ace, i n pounds per squar e f oot . Submi t f i ve copi es of wi nd l oad t est s and sei smi c t est s t o t he Cont r act i ng Of f i cer .

Pr ovi de met al wal l panel assembl y f or sei smi c condi t i ons compl yi ng wi t h t he appl i cabl e r equi r ement s of AI SC 341.

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1. 3. 3 Ai r I nf i l t r at i on

Ai r l eakage must conf or m t o t he l i mi t s t hr ough t he wal l assembl y ar ea when t est ed accor di ng t o ASTM E283.

1. 3. 4 Wat er Penet r at i on Under St at i c Pr essur e

No wat er penet r at i on when t est ed accor di ng t o ASTM E331.

1. 3. 5 Wat er Penet r at i on Under Dynami c Pr essur e

No evi dence of wat er l eakage when t est ed accor di ng t o AAMA 501. 1.

1. 4 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 he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00

SUBMI TTAL PROCEDURES:

SD- 01 Pr econst r uct i on Submi t t al s

Qual i f i cat i on of Manuf act ur er Qual i f i cat i on of I nst al l er Qual i f i cat i ons f or Wel di ng Wor k

SD- 02 Shop Dr awi ngs

Fabr i cat i on and I nst al l at i on dr awi ngs f or t he f ol l owi ng i t ems ar e t o i ndi cat e compl et el y di mensi oned st r uct ur al f r ame and er ect i on l ayout s, openi ngs i n t he wal l , speci al f r ami ng det ai l s, and const r uct i on det ai l s at cor ner s, bui l di ng i nt er sect i ons and f l ashi ng, l ocat i on and t ype of mast i c and met al f i l l er st r i ps.

Wal l Panel Assembl i es Fl ashi ng and Accessor i es Anchor age Syst ems

SD- 03 Pr oduct Dat a

Submi t Manuf act ur er ' s dat a i ndi cat i ng per cent age of r ecycl e mat er i al i n wal l panel s t o ver i f y sust ai nabl e acqui s i t i on compliance.

Submi t Manuf act ur er ' s cat al og dat a f or t he f ol l owi ng i t ems:

Fact or y Col or Fi ni sh Sub- gi r t s and For med Shapes Cl osur e Mat er i al s Insulation Pr essur e Sensi t i ve Tape Seal ant s and Caul ki ng Rat ed Wal l Assembl y Gal vani z i ng Repai r Pai nt Enamel Repai r Pai nt Al umi ni zed St eel Repai r Pai nt

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Accessories

SD- 04 Sampl es

Submi t as r equi r ed each of t he f ol l owi ng sampl es:

Wal l Panel Assembl i es, 12 i nches l ong by act ual panel wi dt h Fasteners Met al Cl osur e St r i ps, 10 i nches l ong of each t ype I nsul at i on, appr oxi mat el y 8 by 11 i nches

Submi t manuf act ur er ' s col or char t s and chi ps, appr oxi mat el y 4 by 4 i nches, showi ng f ul l r ange of col or s, t ext ur es and pat t er ns avai l abl e f or wal l panel s wi t h f act or y appl i ed f i ni shes.

SD- 05 Desi gn Dat a wi nd desi gn anal ysi s

SD- 06 Test Repor t s

Submi t t est r epor t s f or t he f ol l owi ng i n accor dance wi t h t he r ef er enced ar t i c l es i n t hi s sect i on.

Leakage Test s wi nd l oad t est s sei smi c t est s

Coat i ngs and base met al s of met al wal l t ype of t est as speci f i ed i n par agr aphs ent i t l ed, " St eel Sheet Mat er i al s, " and i n var i ous r ef er enced st andar ds i n t hi s sect i on.

Fact or y Col or Fi ni sh Per f or mance Requi r ement s

SD- 07 Cer t i f i cat es

Submi t cer t i f i cat es f or t he f ol l owi ng i t ems showi ng conf or mance wi t h r ef er enced st andar ds cont ai ned i n t hi s sect i on:

Fasteners Gal vani z i ng Repai r Pai nt Enamel Repai r Pai nt

Pr ovi de evi dence t hat pr oduct s used wi t hi n t hi s speci f i cat i on ar e manuf act ur ed i n t he Uni t ed St at es.

Qual i f i cat i on of Manuf act ur er

Cer t i f y t hat t he manuf act ur er of t he met al wal l panel syst em meet s r equi r ement s speci f i ed under par agr aph ent i t l ed " Qual i f i cat i on of Manuf act ur er . "

Qual i f i cat i on of I nst al l er

Cer t i f y t hat t he appl i cat or meet s r equi r ement s speci f i ed under par agr aph ent i t l ed " Qual i f i cat i on of I nst al l at i on Cont r act or . "

Submi t t he wal l syst em assembl y wi nd l oad and f i r e r at i ng c l assi f i cat i on l i s t i ngs.

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SD- 08 Manuf act ur er ' s I nst r uct i ons

I nst al l at i on of Wal l panel s

I ncl ude det ai l ed appl i cat i on i nst r uct i ons and st andar d manuf act ur er dr awi ngs al t er ed as r equi r ed by t hese speci f i cat i ons.

Expl i c i t l y i dent i f y i n wr i t i ng, di f f er ences bet ween manuf act ur er ' s i nst r uct i ons and t he speci f i ed r equi r ement s.

SD- 11 Cl oseout Submi t t al s

Warranty I nst r uct i ons To:

Gover nment and/ or Cont r act or Per sonnel I ncl ude copi es of Mat er i al Saf et y Dat a Sheet s f or mai nt enance/ r epai r mat er i al s.

Submi t 20 year " No- Dol l ar - Li mi t " war r ant y f or l abor and mat er i al s.

1. 5 QUALI TY ASSURANCE

1. 5. 1 Pr e- I nst al l at i on Conf er ence

Af t er submi t t al s ar e r ecei ved and appr oved but bef or e wal l panel and i nsul at i on wor k, i ncl udi ng associ at ed wor k, i s per f or med, t he Cont r act i ng Of f i cer wi l l hol d a pr e- si di ng conf er ence t o r evi ew t he f ol l owi ng:

a. The dr awi ngs, i ncl udi ng Fabr i cat i on and I nst al l at i on dr awi ngs, showi ng compl et e Wal l Panel Assembl i es, and speci f i cat i ons.

I ncl ude det ai l s f or t he f ol l owi ng f or r evi ew:

f l ashi ng and accessor i es anchor age syst ems manuf act ur er ' s cat al og dat a Fact or y Col or Fi ni sh

Submi t manuf act ur er ' s col or char t s and chi ps, appr oxi mat el y 4 by 4 i nches, showi ng f ul l r ange of col or s, t ext ur es and pat t er ns avai l abl e f or wal l panel s wi t h f act or y appl i ed f i ni shes.

Sub- gi r t s and For med Shapes Cl osur e Mat er i al s, i ncl udi ng met al c l osur e st r i ps.

Insulation Pr essur e Sensi t i ve Tape Rat ed Wal l Assembl y t est dat a Accessories Fasteners

b. Fi nal i ze const r uct i on schedul e and ver i f y avai l abi l i t y of mat er i al s, I nst al l er ' s per sonnel , equi pment , and f aci l i t i es needed t o make pr ogr ess and avoi d del ays.

c. Met hods and pr ocedur es r el at ed t o met al wal l panel i nst al l at i on, i ncl udi ng manuf act ur er ' s wr i t t en i nst r uct i ons f or I nst al l at i on of Wal l panel s, and ver i f i cat i on of wal l syst em assembl y wi nd l oad and f i r e r at i ng c l assi f i cat i on l i s t i ngs.

d. Suppor t condi t i ons f or compl i ance wi t h r equi r ement s, i ncl udi ng

Apr i l 2019 Page 7 SECTI ON 07 42 63 al i gnment bet ween and at t achment t o st r uct ur al member s. Pr ovi de det ai l s of wi nd desi gn anal ysi s i ncl udi ng wi nd speed, exposur e cat egor y, co- ef f i c i ent , i mpor t ance f act or , desi gnat es t ype of f aci l i t y , negat i ve pr essur es f or each zone, met hods and r equi r ement s of at t achment . Wi nd desi gn anal ysi s t o i ncl ude wal l pl an del i neat i ng di mensi ons and at t achment pat t er ns f or each zone. Wi nd desi gn anal ysi s t o be pr epar ed and seal ed by Li censed Pr oj ect Engi neer i n t he geogr aphi c ar ea wher e t he const r uct i on wi l l t ake pl ace.

e. Fl ashi ng, speci al s i di ng det ai l s, wal l penet r at i ons, openi ngs, and condi t i on of ot her const r uct i on t hat wi l l af f ect met al wal l panel s.

f . Gover ni ng r egul at i ons and r equi r ement s f or i nsur ance, cer t i f i cat es, t est s and i nspect i ons i f appl i cabl e. I ncl ude cer t i f i cat i on f or sust ai nabl e acqui s i t i on and wal l syst em assembl y wi nd l oad and f i r e r at i ng c l assi f i cat i on. Saf et y pl an r evi ew must i ncl ude appl i cabl e Mat er i al Saf et y Dat a Sheet s.

g. Tempor ar y pr ot ect i on r equi r ement s f or met al wal l panel assembl y dur i ng and af t er i nst al l at i on.

h. Wal l panel obser vat i on and r epai r pr ocedur es af t er met al wal l panel i nst al l at i on. I ncl ude r evi ew of sampl e Gal vani z i ng Repai r Pai nt Enamel Repai r Pai nt Al umi ni zed St eel Repai r Pai nt .

i . Sampl e 20 year " No- Dol l ar - Li mi t " war r ant y.

1. 5. 2 Manuf act ur er ' s Techni cal Repr esent at i ve

The r epr esent at i ve must have aut hor i zat i on f r om manuf act ur er t o appr ove f i el d changes and be t hor oughl y f ami l i ar wi t h t he pr oduct s and i nst al l at i ons i n t he geogr aphi cal ar ea wher e const r uct i on wi l l t ake pl ace.

1. 5. 3 Qual i f i cat i on of Manuf act ur er

Met al wal l panel syst em manuf act ur er must have:

a. A mi ni mum of f i ve ( 5) year s exper i ence i n manuf act ur i ng met al wal l syst em and accessor y pr oduct s.

b. Pr ovi de engi neer i ng ser vi ces by an aut hor i zed engi neer ; cur r ent l y l i censed i n t he geogr aphi cal ar ea wher e const r uct i on wi l l t ake pl ace, havi ng a mi ni mum of f our ( 4) year s exper i ence as an engi neer knowl edgeabl e i n wi nd l oad desi gn anal ysi s, pr ot ocol s and pr ocedur es f or t he MBMA MBSM; ASCE 7, and ASTM E1592.

c. Pr ovi de cer t i f i ed engi neer i ng cal cul at i ons usi ng t he pr oduct s submi t t ed f or :

Wi nd l oad r equi r ement s i n accor dance wi t h FM Wi nd Desi gn Gui de and

ASCE 7.

1. 5. 4 Qual i f i cat i on of I nst al l er

The i nst al l at i on cont r act or must be appr oved and cer t i f i ed by t he wal l panel manuf act ur er pr i or t o begi nni ng t he i nst al l at i on of t he met al wal l system.

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1. 5. 4. 1 Qual i f i cat i ons f or Wel di ng Wor k

Wel di ng pr ocedur es must conf or m t o AWS A5. 1/ A5. 1M, AWS D1. 1/ D1. 1M f or st eel or AWS D1. 2/ D1. 2M f or al umi num.

1. 5. 5 Si ngl e Sour ce

Obt ai n each t ype of met al wal l and l i ner panel s, c l i ps, c l osur es and ot her accessor i es f r om t he st andar d pr oduct s of t he s i ngl e sour ce f r om a si ngl e manuf act ur er t o oper at e as a compl et e syst em f or t he i nt ended use.

1. 5. 6 Sur f ace- Bur ni ng Char act er i st i cs

Pr ovi de met al wal l panel s havi ng i nsul at i on cor e mat er i al wi t h t he f ol l owi ng sur f ace- bur ni ng char act er i st i cs as det er mi ned by t est i ng i dent i cal pr oduct s accor di ng t o ASTM E84 by a qual i f i ed t est i ng agency.

I dent i f y pr oduct s wi t h appr opr i at e mar ki ngs of appl i cabl e t est i ng agency.

a. Fl ame- Spr ead I ndex: 25or l ess.

b. Smoke- Devel oped I ndex: 450 or l ess.

1. 5. 7 Fi r e- Resi st ance Rat i ngs

Wher e i ndi cat ed, pr ovi de met al wal l panel s i dent i cal t o t hose of assembl i es t est ed f or f i r e r esi st ance per ASTM E119 by a qual i f i ed t est i ng agency. I dent i f y pr oduct s wi t h appr opr i at e mar ki ngs of appl i cabl e t est i ng agency.

I ndi cat e desi gn desi gnat i ons f r om UL' s " Fi r e Resi st ance Di r ect or y" or f r om t he l i s t i ngs of anot her qual i f i ed t est i ng agency.

Combust i on Char act er i st i cs: ASTM E136.

1. 5. 8 Fabrication

Fabr i cat e and f i ni sh met al wal l panel s and accessor i es at t he f act or y t o gr eat est ext ent possi bl e, by manuf act ur er ' s st andar d pr ocedur es and pr ocesses and as necessar y t o f ul f i l l i ndi cat ed per f or mance r equi r ement s.

Compl y wi t h i ndi cat ed pr of i l es and wi t h di mensi onal and st r uct ur al requirements.

Pr ovi de panel pr of i l e, i ncl udi ng maj or r i bs and i nt er medi at e st i f f eni ng r i bs, i f any, f or f ul l l engt h of panel .

Fabr i cat e met al wal l panel s i de l aps wi t h f act or y- i nst al l ed capt i ve gasket s or separ at or st r i ps t hat pr ovi de a t i ght seal and pr event met al - t o- met al cont act , i n a manner t hat wi l l seal weat her - t i ght and mi ni mi ze noi se f r om movement s wi t hi n panel assembl y.

1. 5. 8. 1 Sheet Met al Accessor i es

Fabr i cat e f l ashi ng and t r i m t o compl y wi t h r ecommendat i ons i n SMACNA 1793 t hat appl y t o t he desi gn, di mensi ons, met al , and ot her char act er i st i cs of i t em i ndi cat ed:

a. For m exposed sheet met al accessor i es t hat ar e wi t hout excessi ve oi l canni ng, buckl i ng, and t ool mar ks and t hat ar e t r ue t o l i ne and l evel s i ndi cat ed, wi t h exposed edges f ol ded back t o f or m hems.

b. End Seams: Fabr i cat e nonmovi ng seams wi t h f l at - l ock seams. For m

Apr i l 2019 Page 9 SECTI ON 07 42 63 seams and seal wi t h epoxy seam seal er . Ri vet j oi nt s f or addi t i onal strength.

c. Seal ed Joi nt s: For m non- expansi on but movabl e j oi nt s i n met al t o accommodat e el ast omer i c seal ant t o compl y wi t h SMACNA st andar ds.

d. Conceal f ast ener s and expansi on pr ovi s i ons wher e possi bl e. Exposed f ast ener s ar e not al l owed on f aces of accessor i es exposed t o v i ew.

e. Fabr i cat e c l eat s and at t achment devi ces of s i ze and met al t hi ckness r ecommended by SMACNA or by met al wal l panel manuf act ur er f or appl i cat i on, but not l ess t han t hi ckness of met al bei ng secur ed.

1. 5. 9 Finishes

Compl y wi t h NAAMM AMP 500 f or r ecommendat i ons f or appl y i ng and desi gnat i ng finishes.

Appear ance of Fi ni shed Wor k: Not i ceabl e var i at i ons i n same pi ece ar e not accept abl e. Var i at i ons i n appear ance of adj oi ni ng component s ar e accept abl e i f t hey ar e wi t hi n t he r ange of appr oved Sampl es and ar e assembl ed or i nst al l ed t o mi ni mi ze cont r ast .

1. 6 DELI VERY, HANDLI NG, AND STORAGE

Del i ver and package component s, sheet s, met al wal l panel s, and ot her manuf act ur ed i t ems so as not t o be damaged or def or med and pr ot ect ed dur i ng t r anspor t at i on and handl i ng.

Unl oad, st or e, and er ect met al wal l panel s i n a manner t o pr event bendi ng, war pi ng, t wi st i ng, and sur f ace damage.

St ack and st or e met al wal l panel s hor i zont al l y on pl at f or ms or pal l et s, cover ed wi t h sui t abl e weat her - t i ght and vent i l at ed cover i ng t o ensur e dr yness, wi t h posi t i ve s l ope f or dr ai nage of wat er . Do not st or e met al wal l panel s i n cont act wi t h ot her mat er i al s t hat mi ght cause st ai ni ng, dent i ng, or ot her sur f ace damage.

Ret ai n st r i ppabl e pr ot ect i ve cover i ng on met al wal l panel f or per i od of met al wal l panel i nst al l at i on.

Pr ot ect f oam- pl ast i c i nsul at i on as f ol l ows:

a. Do not expose t o sunl i ght , except t o ext ent necessar y f or per i od of i nst al l at i on and conceal ment .

b. Pr ot ect agai nst i gni t i on at al l t i mes. Do not del i ver f oam- pl ast i c i nsul at i on mat er i al s t o Pr oj ect s i t e bef or e i nst al l at i on t i me.

Compl et e i nst al l at i on and conceal ment of pl ast i c mat er i al s as r api dl y as possi bl e i n each ar ea of const r uct i on.

1. 7 PROJECT CONDI TI ONS

Weat her Li mi t at i ons: Pr oceed wi t h i nst al l at i on pr epar at i on onl y when exi st i ng and f or ecast ed weat her condi t i ons per mi t Wor k t o pr oceed wi t hout wat er ent er i ng i nt o exi st i ng wal l i ng syst em or bui l di ng.

Fi el d Measur ement s: Ver i f y l ocat i ons of wal l f r ami ng and openi ng

Apr i l 2019 Page 10 SECTI ON 07 42 63 di mensi ons by f i el d measur ement s bef or e met al wal l panel f abr i cat i on and i ndi cat e measur ement s on Shop Dr awi ngs.

1. 8 WARRANTY

Fur ni sh manuf act ur er ' s no- dol l ar - l i mi t war r ant y f or t he met al wal l panel syst em. The war r ant y per i od i s t o be no l ess t han t went y ( 20) year s f r om t he dat e of Gover nment accept ance of t he wor k. The war r ant y i s t o be i ssued di r ect l y t o t he Gover nment . The war r ant y i s t o pr ovi de t hat i f wi t hi n t he war r ant y per i od t he met al wal l panel syst em shows evi dence of cor r osi on, per f or at i on, r upt ur e or excess weat her i ng due t o det er i or at i on of t he wal l panel syst em r esul t i ng f r om def ect i ve mat er i al s and cor r ect i on of t he def ect i ve wor kmanshi p i s t o be t he r esponsi bi l i t y of t he met al wal l panel syst em manuf act ur er . Repai r s t hat become necessar y because of def ect i ve mat er i al s and wor kmanshi p whi l e met al wal l panel syst em i s under war r ant y ar e t o be per f or med wi t hi n 24 hour s af t er not i f i cat i on, unl ess addi t i onal t i me i s appr oved by t he Cont r act i ng Of f i cer . Fai l ur e t o per f or m r epai r s wi t hi n 24 hour s of not i f i cat i on wi l l const i t ut e gr ounds f or havi ng emer gency r epai r s per f or med by ot her s and not voi d t he war r ant y.

PART 2 PRODUCTS

2. 1 PANEL MATERI ALS

2. 1. 1 St eel Sheet

Rol l - f or m st eel wal l and l i ner panel s t o t he speci f i ed pr of i l e, wi t h f y = 24 gauge and dept h as i ndi cat ed. Mat er i al must be pl umb and t r ue, and wi t hi n t he t ol er ances l i s t ed:

a. Gal vani zed St eel Sheet conf or mi ng t o ASTM A653/ A653M and AI SI SG03- 3.

c. I ndi v i dual panel s t o have cont i nuous l engt h t o cover t he ent i r e l engt h of any unbr oken wal l ar ea wi t h no j oi nt s or seams and f or med wi t hout war pi ng, wavi ness, or r i ppl es t hat ar e not par t of t he panel pr of i l e and f r ee of damage t o t he f i ni sh coat i ng syst em.

e. Pr ovi de panel s wi t h t her mal expansi on and cont r act i on consi st ent wi t h t he t ype of syst em speci f i ed.

1. Pr of i l e and cover age t o be a mi ni mum hei ght and wi dt h f r om manuf act ur er ' s st andar d f or t he i ndi cat ed wal l ar ea.

9. Embossedsur f ace t ext ur e.

2. 1. 2 Foam- I nsul at i on Cor e Wal l Panel

Pr ovi de f act or y- f or med st eel wal l panel assembl y f abr i cat ed f r om t wo sheet s of met al wi t h modi f i ed pol y i socyanur at e or pol yur et hane f oam i nsul at i on cor ef oamed- i n- pl ac dur i ng f abr i cat i on wi t h j oi nt s bet ween panel s desi gned t o f or m weat her - t i ght seal s. I ncl ude accessor i es r equi r ed f or weat her - t i ght i nst al l at i on.

a. Cl osed- Cel l Cont ent : 90 per cent when t est ed accor di ng t o ASTM D6226.

b. Densi t y: 2. 0 t o 2. 6 l b/ cu. f t . when t est ed accor di ng t o

ASTM D1622/ D1622M.

Apr i l 2019 Page 11 SECTI ON 07 42 63

c. Compr essi ve St r engt h: Mi ni mum 20 psi when t est ed accor di ng t o

ASTM D1621.

d. Shear St r engt h: 26 psi when t est ed accor di ng t o ASTM C273/ C273

2. 1. 3 Finish

Al l panel s ar e t o r ecei ve a f act or y- appl i ed Pol yvi nyl i debe Fl uor i de, Kynar 500/ Hyl ar 5000 f i ni sh consi st i ng of a baked- on t op- coat wi t h a manuf act ur er ' s r ecommended pr i me coat conf or mi ng t o t he f ol l owi ng:

a. Met al Pr epar at i on: Al l met al i s t o have t he sur f aces car ef ul l y pr epar ed f or pai nt i ng on a cont i nuous pr ocess coi l coat i ng l i ne by al kal i c l eani ng, hot wat er r i nsi ng, appl i cat i on of chemi cal conver si on coat i ng, col d wat er r i nsi ng, seal i ng wi t h aci d r i nse, and t hor ough drying.

b. Pr i me Coat i ng: A base coat of epoxy pai nt , speci f i cal l y f or mul at ed t o i nt er act wi t h t he t op- coat , i s t o be appl i ed t o t he pr epar ed sur f aces by r ol l coat i ng t o a dr y f i l m t hi ckness of 0. 20 pl us 0. 05 mi l s. Thi s pr i me coat must be oven cur ed pr i or t o appl i cat i on of f i ni sh coat .

c. Ext er i or Fi ni sh Coat i ng: Appl y t he f i ni sh coat i ng over t he pr i mer by r ol l coat i ng t o dr y f i l m t hi ckness of 0. 80 pl us 5 mi l s ( 3. 80 pl us 0. 50 mi l s f or Vi nyl Pl ast i sol ) f or a t ot al dr y f i l m t hi ckness of 1. 00 pl us

0. 10 mi l s ( 4. 00 pl us 0. 10 mi l s f or Vi nyl Pl ast i sol ) . Thi s f i ni sh coat must be oven- cur ed.

d. I nt er i or Fi ni sh Coat i ng: Appl y a wash- coat on t he r ever se si de over t he pr i mer by r ol l coat i ng t o a dr y f i l m t hi ckness of 0. 30 pl us 0. 05 mi l s f or a t ot al dr y f i l m t hi ckness of 0. 50 pl us 0. 10 mi l s. The wash- coat must be oven- cur ed.

e. Col or : The ext er i or f i ni sh chosen f r om t he manuf act ur er ' s st andar d col or char t .

f . Physi cal Pr oper t i es: Coat i ng must conf or m t o t he i ndust r y and manuf act ur er ' s st andar d per f or mance cr i t er i a as l i s t ed by t he f ol l owi ng cer t i f i ed t est r epor t s:

Chalking: ASTM D4214

Col or Change and Conf or mi t y: ASTM D2244

Weatherometer: ASTM G152, ASTM G153 and ASTM D822

Humidity: ASTM D2247 and ASTM D714

Sal t Spr ay: ASTM B117

Chemi cal Pol l ut i on: ASTM D1308

Gl oss at 60: ASTM D523

Apr i l 2019 Page 12 SECTI ON 07 42 63

Penci l Har dness: ASTM D3363

Rever se I mpact : ASTM D2794

Flexibility: ASTM D522/ D522M

Abrasion: ASTM D968

Fl ame Spr ead: ASTM E84

2. 2 MI SCELLANEOUS METAL FRAMI NG

2. 2. 1 General

Col d- f or med met al l i c- coat ed st eel sheet conf or mi ng t o ASTM A653/ A653M and speci f i ed i n Di v i s i on 05 Sect i on 05 40 00 " Col d- For med Met al Fr ami ng" unl ess ot her wi se i ndi cat ed.

2. 2. 2 Fast ener s f or Mi scel l aneous Met al Fr ami ng

Type, mat er i al , cor r osi on r esi st ance, s i ze and suf f i c i ent l engt h t o penet r at e t he suppor t i ng member a mi ni mum of 1 i nch wi t h ot her pr oper t i es r equi r ed t o f ast en mi scel l aneous met al f r ami ng member s t o subst r at es i n accor dance wi t h t he wal l panel manuf act ur er ' s and ASCE 7 r equi r ement s.

2. 3 FASTENERS

2. 3. 1 General

Type, mat er i al , cor r osi on r esi st ance, s i ze and suf f i c i ent l engt h t o penet r at e t he suppor t i ng member a mi ni mum of 1 i nch wi t h ot her pr oper t i es r equi r ed t o f ast en mi scel l aneous met al f r ami ng member s t o subst r at es i n accor dance wi t h t he wal l panel manuf act ur er ' s and ASCE 7 r equi r ement s.

2. 3. 2 Screws

Scr ews t o be cor r osi on r esi st ant coat edst ai nl ess st eel bei ng t he t ype and si ze r ecommended by t he manuf act ur er t o meet t he per f or mance r equi r ement s.

2. 3. 3 Rivets

Ri vet s t o be cl osed- end t ype, cor r osi on r esi st ant coat ed st eel , al umi num or st ai nl ess st eel wher e wat er t i ght connect i ons ar e r equi r ed.

2. 3. 4 At t achment Cl i ps

Fabr i cat e c l i ps f r om st eel hot - di pped gal vani zed i n accor dance wi t h ASTM A653/ A653M, or Ser i es 305 st ai nl ess st eel . Si ze, shape, t hi ckness and capaci t y as r equi r ed meet i ng t he i nsul at i on t hi ckness and desi gn l oad cr i t er i a speci f i ed.

2. 4 ACCESSORIES

2. 4. 1 General

Al l accessor i es t o be compat i bl e wi t h t he met al wal l panel s. Sheet met al

Apr i l 2019 Page 13 SECTI ON 07 42 63 f l ashi ng, t r i m, met al c l osur e st r i ps, caps and si mi l ar met al accessor i es must not be l ess t han t he mi ni mum t hi ckness speci f i ed f or t he wal l panel s.

Exposed met al accessor i es/ f i ni shes t o mat ch t he panel s f ur ni shed, except as ot her wi se i ndi cat ed. Mol ded f oam r i b, r i dge and ot her c l osur e st r i ps t o be non- absor bent c l osed- cel l or sol i d- cel l synt het i c r ubber or pr e- mol ded neopr ene t o mat ch conf i gur at i on of t he panel s.

2. 4. 2 Rubber Cl osur e St r i ps

Cl osed- cel l , expanded cel l ul ar r ubber conf or mi ng t o ASTM D1056 and ASTM D1667; ext r uded or mol ded t o t he conf i gur at i on of t he speci f i ed wal l panel and i n l engt hs suppl i ed by t he wal l panel manuf act ur er .

2. 4. 3 Met al Cl osur e St r i ps

Fact or y f abr i cat ed al umi num or st eel c l osur e st r i ps t o be t he same gauge, col or , f i ni sh and pr of i l e of t he speci f i ed wal l panel .

2. 4. 4 Joi nt Seal ant s

2. 4. 4. 1 Seal ant s and Caul ki ng

Seal ant s ar e t o be an appr oved gun t ype f or use i n hand- or ai r - pr essur e caul k i ng guns at t emper at ur es above 40 degr ees F ( or f r ost - f r ee appl i cat i on at t emper at ur es above 10 degr ees F) wi t h mi ni mum sol i d cont ent of 85 per cent of t he t ot al vol ume. Seal ant i s t o dr y wi t h a t ough, dur abl e sur f ace ski n whi ch per mi t s i t t o r emai n sof t and pl i abl e under neat h, pr ovi di ng a weat her - t i ght j oi nt . No mi gr at or y st ai ni ng i s per mi t t ed on pai nt ed or unpai nt ed met al , st one, gl ass, v i nyl , or wood.

Pr i me al l j oi nt s t o r ecei ve seal ant s wi t h a compat i bl e one- component or t wo- component pr i mer as r ecommended by t he wal l panel manuf act ur er .

2. 4. 4. 2 Shop-Applied

Seal ant f or shop- appl i ed caul k i ng must be an appr oved gun gr ade, non- sag one component pol ysul f i de or s i l i cone conf or mi ng t o ASTM C920, Type I I , and wi t h a cur i ng t i me t o ensur e t he seal ant ' s pl ast i c i t y at t he t i me of f i el d er ect i on.

2. 4. 4. 3 Field-Applied

Seal ant f or f i el d- appl i ed caul k i ng must be an appr oved gun gr ade, non- sag one component pol ysul f i de or t wo- component pol yur et hane wi t h an i ni t i al maxi mum Shor e A dur omet er har dness of 25, and conf or mi ng t o ASTM C920, Type I I . Col or t o mat ch panel col or s.

2. 4. 4. 4 Tape Seal ant

Pr essur e sensi t i ve, 100 per cent sol i d wi t h a r el ease paper backi ng;

per manent l y el ast i c, non- saggi ng, non- t oxi c and non- st ai ni ng as appr oved by t he wal l panel manuf act ur er .

2. 5 SHEET METAL FLASHI NG AND TRI M

2. 5. 1 Fabrication

Shop f abr i cat e sheet met al f l ashi ng and t r i m wher e pr act i cabl e t o compl y wi t h r ecommendat i ons i n SMACNA 1793 t hat appl y t o desi gn, di mensi ons, Apr i l 2019 Page 14 SECTI ON 07 42 63 met al , and ot her char act er i st i cs of i t em i ndi cat ed. Obt ai n f i el d measur ement s f or accur at e f i t bef or e shop f abr i cat i on.

Fabr i cat e sheet met al f l ashi ng and t r i m wi t hout excessi ve oi l canni ng, buckl i ng, and t ool mar ks and t r ue t o l i ne and l evel s i ndi cat ed, wi t h exposed edges f ol ded back t o f or m hems.

2. 6 REPAI R OF FI NI SH PROTECTI ON

Repai r pai nt f or col or f i ni sh enamel ed wal l panel must be compat i bl e pai nt of t he same f or mul a and col or as t he speci f i ed f i ni sh f ur ni shed by t he wal l panel manuf act ur er .

PART 3 EXECUTI ON

3. 1 EXAMINATION

A. Exami ne subst r at es, ar eas, and condi t i ons, wi t h I nst al l er pr esent , f or compl i ance wi t h r equi r ement s f or i nst al l at i on t ol er ances, met al wal l panel suppor t s, and ot her condi t i ons af f ect i ng per f or mance of t he Wor k.

B. Exami ne pr i mar y and secondar y wal l f r ami ng t o ver i f y t hat r af t er s, pur l i ns, angl es, channel s, and ot her st r uct ur al panel suppor t member s and anchor ages have been i nst al l ed wi t hi n al i gnment t ol er ances r equi r ed by met al wal l panel manuf act ur er , UL, ASTM, ASCE 7 and as r equi r ed f or t he geogr aphi cal ar ea wher e const r uct i on wi l l t ake pl ace.

C. Exami ne sol i d wal l sheat hi ng t o ver i f y t hat sheat hi ng j oi nt s ar e suppor t ed by f r ami ng or bl ocki ng and t hat i nst al l at i on i s wi t hi n f l at ness t ol er ances r equi r ed by met al wal l panel manuf act ur er .

D. Exami ne r oughi ng- i n f or component s and syst ems penet r at i ng met al wal l panel s t o ver i f y act ual l ocat i ons of penet r at i ons r el at i ve t o seam l ocat i ons of met al wal l panel s bef or e met al wal l panel i nst al l at i on.

E. Submi t t o t he Cont r act i ng Of f i cer a wr i t t en r epor t , endor sed by I nst al l er , l i s t i ng condi t i ons det r i ment al t o per f or mance of t he Wor k.

F. Pr oceed wi t h i nst al l at i on onl y af t er unsat i sf act or y condi t i ons have been cor r ect ed.

3. 2 PREPARATION

A. Cl ean subst r at es of subst ances har mf ul t o i nsul at i on, i ncl udi ng r emovi ng pr oj ect i ons capabl e of i nt er f er i ng wi t h i nsul at i on at t achment .

B. Mi scel l aneous Fr ami ng: I nst al l sub- pur l i ns, gi r t s, angl es, f ur r i ng, and ot her mi scel l aneous wal l panel suppor t member s and anchor age accor di ng t o met al wal l panel manuf act ur er ' s wr i t t en i nst r uct i ons.

3. 3 WALL PANEL I NSTALLATI ON

Pr ovi de met al wal l panel s of f ul l l engt h f r om si l l t o eave as i ndi cat ed, unl ess ot her wi se i ndi cat ed or r est r i ct ed by shi ppi ng l i mi t at i ons. Anchor met al wal l panel s and ot her component s of t he Wor k secur el y i n pl ace, wi t h pr ovi s i ons f or t her mal and st r uct ur al movement i n accor dance wi t h MBMA Met al Bui l di ng Syst ems Manual .

a. St eel Wal l Panel s: Use st ai nl ess- st eel f ast ener s f or ext er i or

Apr i l 2019 Page 15 SECTI ON 07 42 63 sur f aces and gal vani zed st eel f ast ener s f or i nt er i or sur f aces.

c. Anchor Cl i ps: Anchor met al wal l panel s and ot her component s of t he Wor k secur el y i n pl ace, usi ng manuf act ur er ' s appr oved f ast ener s accor di ng t o manuf act ur er ' s wr i t t en i nst r uct i ons.

d. Met al Pr ot ect i on: Wher e di ssi mi l ar met al s wi l l cont act each ot her or cor r osi ve subst r at es, pr ot ect agai nst gal vani c act i on by pai nt i ng cont act sur f aces wi t h bi t umi nous coat i ng, by appl y i ng r ubber i zed- asphal t under l ayment t o each cont act sur f ace, or by ot her per manent separ at i on as r ecommended by met al wal l panel manuf act ur er .

e. Joi nt Seal er s: I nst al l gasket s, j oi nt f i l l er s, and seal ant s wher e i ndi cat ed and wher e r equi r ed f or weat her pr oof per f or mance of met al wal l panel assembl i es. Pr ovi de t ypes of gasket s, f i l l er s, and seal ant s i ndi cat ed or , i f not i ndi cat ed, t ypes r ecommended by met al wal l panel manuf act ur er .

Er ect wal l panel syst em i n accor dance wi t h t he appr oved er ect i on dr awi ngs, t he pr i nt ed i nst r uct i ons and saf et y pr ecaut i ons of t he manuf act ur er .

Sheet s ar e not t o be subj ect ed t o over l oadi ng, abuse, or undue i mpact .

Bent , chi pped, or def ect i ve sheet s shal l not be appl i ed.

Sheet s must be er ect ed t r ue and pl umb and i n exact al i gnment wi t h t he hor i zont al and ver t i cal edges of t he bui l di ng, secur el y anchor ed, and wi t h t he i ndi cat ed eave, and si l l .

Wor k i s t o al l ow f or t her mal movement of t he wal l panel , movement of t he bui l di ng st r uct ur e, and t o pr ovi de per manent f r eedom f r om noi se due t o wi nd pr essur e.

Fi el d cut t i ng met al wal l panel s by t or ch i s not per mi t t ed.

3. 4 FASTENER I NSTALLATI ON

Anchor met al wal l panel s and ot her component s of t he Wor k secur el y i n pl ace, usi ng manuf act ur er ' s appr oved f ast ener s accor di ng t o manuf act ur er ' s wr i t t en i nst r uct i ons.

3. 5 FLASHI NG, TRI M AND CLOSURE I NSTALLATI ON

3. 5. 1 Gener al Requi r ement s

Compl y wi t h per f or mance r equi r ement s, manuf act ur er ' s wr i t t en i nst al l at i on i nst r uct i ons, and SMACNA 1793. Pr ovi de conceal ed f ast ener s wher e possi bl e, and set uni t s t r ue t o l i ne and l evel as i ndi cat ed. I nst al l wor k wi t h l aps, j oi nt s, and seams t hat wi l l be per manent l y wat er t i ght and weat her r esi st ant .

Sheet met al wor k i s t o be accompl i shed t o f or m weat her - t i ght const r uct i on wi t hout waves, war ps, buckl es, f ast eni ng st r esses or di st or t i on, and al l ow f or expansi on and cont r act i on. Cut t i ng, f i t t i ng, dr i l l i ng, and ot her oper at i ons i n connect i on wi t h sheet met al r equi r ed t o accommodat e t he wor k of ot her t r ades i s t o be per f or med by sheet met al mechani cs.

3. 5. 2 Met al Fl ashi ng

Exposed met al f l ashi ng i s t o be i nst al l ed at bui l di ng cor ner s, s i l l s and

Apr i l 2019 Page 16 SECTI ON 07 42 63 eaves, j unct i ons bet ween met al s i di ng and wal l i ng.

Exposed met al f l ashi ng i s t o be t he same mat er i al , col or , and f i ni sh as t he speci f i ed met al wal l panel .

Fl ashi ng i s t o be f ast ened at not mor e t han 8 i nches on cent er , except wher e f l ashi ng ar e hel d i n pl ace by t he same scr ews t hat secur e cover i ng sheets.

Fl ashi ng i s t o be f ur ni shed i n at l east 8 f oot l engt hs. Exposed f l ashi ng i s t o have 1 i nch l ocked and bl i nd- sol der ed end j oi nt s, and expansi on j oi nt s at i nt er val s of not mor e t han 16 f eet .

Exposed f l ashi ng and f l ashi ng subj ect t o r ai n penet r at i on t o be bedded i n t he speci f i ed j oi nt seal ant .

Fl ashi ng whi ch i s i n cont act wi t h di ssi mi l ar met al s t o be i sol at ed by means of t he speci f i ed asphal t mast i c mat er i al t o pr event el ect r ol yt i c deterioration.

Dr i ps t o be f or med t o t he pr of i l e i ndi cat ed, wi t h t he edge f ol ded back 1/ 2 i nch t o f or m a r ei nf or ced dr i p edge.

3. 5. 3 Closures

I nst al l met al c l osur e st r i ps at open ends of cor r ugat ed or r i bbed pat t er n wal l s, and at i nt er sect i on of wal l and wal l unl ess open ends ar e conceal ed wi t h f or med eave f l ashi ng; and i n ot her r equi r ed ar eas.

I nst al l mast i c c l osur e st r i ps at i nt er sect i on of t he wal l wi t h met al wal l i ng; t op and bot t om of met al s i di ng; heads of wal l openi ngs; and i n ot her r equi r ed l ocat i ons.

3. 6 WORKMANSHIP

Make l i nes, ar i ses, and angl es shar p and t r ue. Fr ee exposed sur f aces f r om vi s i bl e wave, war p, buckl e, and t ool mar ks. Fol d back exposed edges neat l y t o f or m a 1/ 2 i nch hem on t he conceal ed si de. Make sheet met al exposed t o t he weat her wat er t i ght wi t h pr ovi s i ons f or expansi on and contraction.

Make sur f aces t o r ecei ve sheet met al pl umb and t r ue, c l ean, even, smoot h, dr y, and f r ee of def ect s and pr oj ect i ons whi ch mi ght af f ect t he appl i cat i on. For i nst al l at i on of i t ems not shown i n det ai l or not cover ed by speci f i cat i ons conf or m t o t he appl i cabl e r equi r ement s of SMACNA 1793.

Pr ovi de sheet met al f l ashi ng i n t he angl es f or med wher e r oof decks abut wal l s, cur bs, vent i l at or s, pi pes, or ot her ver t i cal sur f aces and wher ever i ndi cat ed and necessar y t o make t he wor k wat er t i ght .

3. 7 ACCEPTANCE PROVI SI ONS

3. 7. 1 Er ect i on Tol er ances

Er ect met al wal l panel s st r ai ght and t r ue wi t h pl umb ver t i cal l i nes cor r ect l y l apped and secur ed i n accor dance wi t h t he manuf act ur er ' s wr i t t en i nst r uct i ons. Hor i zont al l i nes must not var y mor e t han 1/ 8 i nch i n 40 feet.

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3. 7. 2 Leakage Test s

Fi ni shed appl i cat i on of met al wal l panel s ar e t o be subj ect t o i nspect i on and t est f or l eakage by t he Cont r act i ng Of f i cer , Ar chi t ect / Engi neer .

I nspect i on and t est s wi l l be conduct ed wi t hout cost t o t he Gover nment .

I nspect i on and t est i ng i s t o be made pr ompt l y af t er er ect i on t o per mi t cor r ect i on of def ect s and t he r emoval and r epl acement of def ect i ve materials.

3. 7. 3 Repai r s t o Fi ni sh

Scr at ches, abr asi ons, and mi nor sur f ace def ect s of f i ni sh may be r epai r ed wi t h t he speci f i ed r epai r mat er i al s. Fi ni shed r epai r ed sur f aces must be uni f or m and f r ee f r om var i at i ons of col or and sur f ace t ext ur e.

Repai r ed met al sur f aces t hat ar e not accept abl e t o t he pr oj ect r equi r ement s ar e t o be i mmedi at el y r emoved and r epl aced wi t h new mat er i al .

3. 7. 4 Pai nt - Fi ni sh Met al Si di ng

Pai nt - f i ni sh met al s i di ng wi l l be t est ed f or col or st abi l i t y by t he Cont r act i ng Of f i cer dur i ng t he manuf act ur er ' s speci f i ed guar ant ee per i od.

Panel s t hat i ndi cat e col or changes, f adi ng, or sur f ace degr adat i on, det er mi ned by v i sual exami nat i on, must be r emoved and r epl aced wi t h new panel s at no expense t o t he Gover nment .

New panel s wi l l be subj ect t o t he speci f i ed t est s f or an addi t i onal year f r om t he dat e of t hei r i nst al l at i on.

3. 8 CLEAN- UP AND DI SPOSAL

Cl ean al l exposed sheet met al wor k at compl et i on of i nst al l at i on. Remove met al shavi ngs, f i l i ngs, nai l s, bol t s, and wi r es f r om wor k ar ea. Remove gr ease and oi l f i l ms, excess seal ant s, handl i ng mar ks, cont ami nat i on f r om st eel wool , f i t t i ngs and dr i l l i ng debr i s and scr ub t he wor k c l ean.

Exposed met al sur f aces t o be f r ee of dent s, cr eases, waves, scr at ch mar ks, sol der or wel d mar ks, and damage t o t he f i ni sh coat i ng.

Col l ect and pl ace scr ap/ wast e mat er i al s i n cont ai ner s. Pr ompt l y di spose of demol i shed mat er i al s. Do not al l ow demol i shed mat er i al s t o accumul at e on- si t e; t r anspor t demol i shed mat er i al s f r om gover nment pr oper t y and l egal l y di spose of t hem.

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