07 62 13.pdf

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

SECTI ON 07 62 13

COPPER SHEET METAL FLASHI NG AND TRI M

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.

ASTM I NTERNATI ONAL ( ASTM)

ASTM B152/ B152M ( 2013) St andar d Speci f i cat i on f or Copper Sheet , St r i p, Pl at e, and Rol l ed Bar

ASTM B32 ( 2008; R 2014) St andar d Speci f i cat i on f or Sol der Met al

ASTM B370 ( 2012) St andar d Speci f i cat i on f or Copper Sheet and St r i p f or Bui l di ng Const r uct i on

ASTM C1136 ( 2017) St andar d Speci f i cat i on f or Fl exi bl e, Low Per meance Vapor Ret ar der s f or Ther mal I nsul at i on

ASTM D226/ D226M ( 2009) St andar d Speci f i cat i on f or Asphal t - Sat ur at ed Or gani c Fel t Used i n Roof i ng and Wat er pr oof i ng

ASTM D4586/ D4586M ( 2007; E 2012; R 2012) Asphal t Roof Cement , Asbest os- Fr ee

ASTM F547 ( 2006; R 2012) Nai l s f or Use wi t h Wood and Wood- Base Mat er i al s

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 , 7t h Edi t i on

U. S. GENERAL SERVI CES ADMI NI STRATI ON ( GSA)

CI D A- A- 51145 ( Rev D; Not i ce 1; Not i ce 2) Fl ux, Sol der i ng, Non- El ect r oni c, Past e and Li qui d

1. 2 SYSTEM DESCRI PTI ON

a. Per f or m sheet met al wor k t o accompl i sh weat her t i ght const r uct i on.

I nst al l t he wor k wi t hout waves, war ps, buckl es, f ast eni ng st r esses or di st or t i on, al l owi ng 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 shal l be per f or med by sheet met al mechani cs. Exposed edges shal l be hemmed. Bot t om edges of

Apr i l 2019 Page 1 SECTI ON 07 62 13 exposed ver t i cal sur f aces shal l be angl ed t o f or m dr i ps. For m f l ashi ng i nt o a 3- di mensi onal conf i gur at i on, at t he end of a r un. t o di r ect wat er t o t he out si de of t he syst em. Wei ght s and t hi cknesses of copper f l ashi ng shal l be as speci f i ed i n TABLE 1. I nst al l j oi nt s as speci f i ed i n TABLE 2. Pr ovi de accessor i es and ot her i t ems, essent i al t o compl et e t he sheet met al i nst al l at i on, t hough not speci f i cal l y i ndi cat ed or speci f i ed.

b. I nst al l at i on of sheet met al i t ems used i n conj unct i on wi t h r oof i ng shal l be coor di nat ed wi t h r oof i ng wor k t o per mi t cont i nuous r oof i ng oper at i ons. Fact or y- f abr i cat ed component s shal l be packed i n car t ons mar ked wi t h t he manuf act ur er ' s name or t r ademar k pr i nt ed or embossed at f r equent i nt er val s t o per mi t easy i dent i f i cat i on. Sheet met al wor k per t ai ni ng t o heat i ng, vent i l at i ng, and ai r condi t i oni ng i s speci f i ed i n ot her sect i ons.

c. Gal vani c act i on bet ween copper and i r on or st eel shal l be avoi ded by t he use of pr oper i nsul at i on. The copper shal l be i nsul at ed by t he f ol l owi ng: cover i ng t he st eel member wi t h i nsul at i on; pl aci ng st r i ps of sheet l ead bet ween t he t wo met al s; or by heavi l y t i nni ng t he i r on.

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 . ] [ i nf or mat i on onl y. When used, a desi gnat i on f ol l owi ng t he " G" desi gnat i on i dent i f i es t he of f i ce t hat wi l l r evi ew t he submi t t al f or t he Gover nment . ] 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 eNot 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

Sheet Met al

SD- 03 Pr oduct Dat a

Cont r act or Qual i t y Cont r ol

SD- 04 Sampl es

Materials

1. 4 DELI VERY, STORAGE, AND HANDLI NG

Mat er i al s shal l be adequat el y packaged and pr ot ect ed dur i ng shi pment and i nspect ed f or damage, dampness, and wet - st or age st ai ns upon del i ver y t o t he j obsi t e. Mat er i al s shal l be c l ear l y l abel ed as t o t ype and manuf act ur er . Sheet met al i t ems shal l be car ef ul l y handl ed t o avoi d damage. St or e mat er i al s i n dr y, weat her t i ght , vent i l at ed ar eas unt i l installation.

PART 2 PRODUCTS

2. 1 MATERIALS

Pr ovi de mat er i al s conf or mi ng t o t he r equi r ement s speci f i ed bel ow, and t hose gi ven i n TABLE 1. Mat er i al s exposed t o weat her shal l be copper .

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Recycl abl e mat er i al s ( bui l di ng paper , et c. ) shal l conf or m t o EPA r equi r ement s i n conf or mance wi t h Sect i on 01 33 29 SUSTAI NABI LI TY REPORTI NG. Submi t sampl es of mat er i al s pr oposed f or use, upon r equest .

2. 1. 1 Asphal t Roof Cement

ASTM D4586/ D4586M, Type I .

2. 1. 2 Fasteners

Fast ener s shal l conf or m t o TABLE 1. Nai l s shal l conf or m t o ASTM F547 or be as appr oved. Nai l s and r i vet s shal l be copper . Scr ews and bol t s shal l be br onze. Fast ener s shal l be t he best t ype f or t he appl i cat i on.

2. 1. 3 Felt

ASTM D226/ D226M, Type I I .

2. 1. 4 Flux

CI D A- A- 51145, Type I .

2. 1. 5 Sl i p Sheet

Bui l di ng paper meet i ng t he r equi r ement s of ASTM C1136, Type I V, st y l e optional.

2. 1. 6 Sheet Met al

Sheet met al shal l conf or m t o ASTM B152/ B152M, ASTM B370, Li ght col d- r ol l ed t emper ( H00) copper . Submi t dr awi ngs showi ng wei ght s, gauges, or t hi ckness of sheet met al ; t ype of mat er i al ; j oi ni ng, expansi on- j oi nt spaci ng, and f abr i cat i on det ai l s; and i nst al l at i on pr ocedur es. Mat er i al s shal l not be del i ver ed t o t he s i t e unt i l af t er t he appr oved det ai l dr awi ngs have been r et ur ned t o t he Cont r act or .

2. 1. 7 Solder

ASTM B32 Sn50.

2. 2 SEALANTS AND SEALI NG COMPOUNDS

Seal ant s and seal i ng compounds ar e speci f i ed i n Sect i on 07 92 00 JOI NT

SEALANTS.

PART 3 EXECUTI ON

3. 1 EXI STI NG COPPER SHEET METAL

Exi st i ng, or i gi nal , hi st or i c copper sheet met al el ement s t hat ar e i nt act and ser vi ceabl e shal l be sal vaged and r eused whenever possi bl e. Thi s may i ncl ude, but i s not l i mi t ed t o, gut t er s, hanger s, downspout s, connect or s, l eader heads, l eader st r aps, basket st r ai ner s, spl ash pans, and ot her ar chi t ect ur al sheet met al el ement s such as f i ni al s, and decor at i ve panel s. When wor k i nvol ves r epai r and r epl acement of copper sheet met al el ement s, new el ement s shal l mat ch exi st i ng or i gi nal el ement s as c l osel y as possi bl e.

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3. 2 SOLDERI NG AND SEAMI NG

3. 2. 1 Soldering

Edges of sheet met al s, except l ead coat ed mat er i al , shal l be pr et i nned bef or e sol der i ng i s begun. Sol der i ng shal l be done sl owl y wi t h wel l heat ed sol der i ng i r ons t o t hor oughl y heat t he seams and compl et el y sweat t he sol der t hr ough t he f ul l wi dt h of t he seam. Edges of l ead coat ed mat er i al t o be sol der ed shal l be scr aped or wi r e- br ushed t o pr oduce a br i ght sur f ace, and seams shal l have a l i ber al amount of f l ux br ushed i n bef or e sol der i ng i s begun. Sol der i ng shal l f ol l ow i mmedi at el y af t er appl i cat i on of t he f l ux. Upon compl et i on of sol der i ng, t he aci d f l ux r esi due shal l be t hor oughl y c l eaned f r om t he sheet met al wi t h a sol ut i on of washi ng soda i n wat er and r i nsed wi t h c l ean wat er .

3. 2. 2 Seams

Fl at - l ock and sol der ed- l ap seams shal l f i ni sh not l ess t han 1 i nch wi de.

Unsol der ed pl ai n- l ap seams shal l l ap not l ess t han 3 i nches unl ess ot her wi se speci f i ed. Fl at seams shal l be made i n t he di r ect i on of t he flow.

3. 3 COVERI NG ON MI NOR FLAT, PI TCHED, OR CURVED SURFACES

Unl ess ot her wi se i ndi cat ed, mi nor f l at , pi t ched, or cur ved sur f aces, such as cr i cket s, bul kheads, dor mer s, and smal l decks, shal l be cover ed or f l ashed wi t h 18 x 24 i nch met al sheet s and shal l be secur ed wi t h c l eat s.

One pl y of f el t cover ed wi t h 1 pl y of s l i p sheet shal l be appl i ed as under l ayment on wood sur f aces. Two cl eat s shal l be pl aced on t he l ong si de and 1 c l eat shal l be pl aced on t he shor t s i de. Seams shal l be l ocked and sol der ed.

3. 4 CLEATS

Pr ovi de a cont i nuous cl eat wher e i ndi cat ed or speci f i ed t o secur e l oose edges of t he sheet met al wor k. Space but t j oi nt s appr oxi mat el y 1/ 8 i nch apar t . Fast en t he cl eat t o t he suppor t i ng const r uct i on wi t h nai l s evenl y spaced not over 12 i nches on cent er s. Wher e t he f ast eni ng i s t o be made t o concr et e or masonr y, use scr ews dr i ven i n expansi on shi el ds set i n concr et e or masonr y. The cl eat f or f asci a anchor age shal l be i nst al l ed t o ext end bel ow t he suppor t i ng const r uct i on t o f or m a dr i p and t o al l ow t he f l ashi ng t o be hooked over t he l ower edge at l east 3/ 4 i nch. The cl eat shal l be of suf f i c i ent wi dt h t o pr ovi de adequat e bear i ng ar ea t o ensur e a r i gi d i nst al l at i on. Wher e hor i zont al nai l er i s vent ed f or i nsul at i on and t he cl eat i s pl aced over masonr y or concr et e, t he c l eat shal l be i nst al l ed over 1/ 16 i nch t hi ck met al washer s pl aced at scr ews. Washer s shal l be of met al t hat i s el ect r ol yt i cal l y compat i bl e wi t h t he cont i nuous cl eat .

3. 5 EXPANSI ON JOI NTS

Pr ovi de expansi on j oi nt s at 40 f oot i nt er val s, except t hat wher e t he di st ance bet ween t he l ast expansi on j oi nt and t he end of t he cont i nuous r un i s mor e t han hal f t he r equi r ed i nt er val spaci ng, an addi t i onal j oi nt shal l be pr ovi ded. Joi nt s shal l be evenl y spaced.

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3. 6 FLASHINGS

3. 6. 1 General

I nst al l f l ashi ngs at i nt er sect i ons of r oof wi t h ver t i cal sur f aces and at pr oj ect i ons t hr ough r oof , except t hat f l ashi ng f or heat i ng and pl umbi ng, i ncl udi ng pi pi ng, r oof , and f l oor dr ai ns, and f or el ect r i cal condui t pr oj ect i ons t hr ough r oof or wal l s i s cover ed i n appr opr i at e sect i ons f or such wor k. Cap f l ashi ngs shal l be t ur ned ar ound ext er i or cor ner s of masonr y or concr et e wal l s at l east 2 i nches, shal l be secur ed i nt o masonr y j oi nt s and i nt o concr et e wi t h expansi on anchor s and shal l be seal ed wi t h No. 2 or 4 seal i ng compound. Cor ner uni t s shal l have mi t er ed j oi nt s, shal l be i nst al l ed wi t h 3 i nch l ap j oi nt over f l ashi ngs on each si de.

Unl ess ot her wi se i ndi cat ed, t hr ough- wal l f l ashi ng shal l be t er mi nat ed 1/ 2 i nch i nsi de each exposed f ace of t he wal l . Cap f l ashi ngs shal l be pr ovi ded over base f l ashi ngs. Per f or at i ons i n f l ashi ngs made by masonr y anchor s shal l be cover ed up by an appl i cat i on of bi t umi nous pl ast i c cement at t he per f or at i on. Exposed and unf ast ened f l ashi ngs shal l have t he edge of t he st r i p t ur ned under 1/ 2 i nch. Fl ashi ng shal l be i nst al l ed on t op of j oi nt r ei nf or cement .

3. 6. 2 Base Fl ashi ngs

a. Ext end base f l ashi ngs under t he upper most r ow of t i l e t he f ul l dept h of t he t i l e or at l east 4 i nches over t he t i l e i mmedi at el y bel ow t he metal.

b. Tur n up t he ver t i cal l eg of t he met al not l ess t han 4 i nches and pr ef er abl y 8 i nches on t he abut t i ng sur f ace. Wher e a ver t i cal sur f ace but t s agai nst t he r oof s l ope, t he base f l ashi ng shal l be bui l t i nt o each cour se of t i l e as i t i s l ai d, t ur ni ng t he met al out 4 i nches on t he t i l e and at l east 8 i nches above t he r oof .

c. Wher e t he r oof st ops agai nst a st uccoed wal l , secur e a wood 2 x 4 wi t h a bevel ed t op edge t o t he wal l . Then t ur n out base f l ashi ng over t he t i l e at l east 4 i nches and bend up ver t i cal l y at l east 3 i nches on t he board.

d. Tur n out t he base f l ashi ng 4 i nches on t he r oof sur f ace and f r om 6 t o 8 i nches on t he ver t i cal sur f ace f or ei t her s l opi ng or f l at s l at e roofs.

e. Use base f l ashi ngs wher e post s, f l agpol es, or scut t l es pr oj ect t hr ough t he r oof . Vent pi pes shal l have base f l ashi ngs i n t he f or m of speci al s l eeves and/ or EPDM boot s.

3. 6. 3 Cap Fl ashi ngs ( Count er f l ashi ngs)

Wher e t he base f l ashi ng i s not cover ed by ver t i cal t i l e or s i di ng, bui l d a cap f l ashi ng i nt o t he masonr y j oi nt s l appi ng not l ess t han 2 i nches ver t i cal l y, ext endi ng down over t he base f l ashi ng 4 i nches, and t he edge bent back and up 1/ 2 i nch.

3. 6. 4 St epped Fl ashi ng

I nst al l st epped f l ashi ng wher e sl opi ng r oof s sur f aced wi t h t i l es abut ver t i cal sur f aces. Pl ace separ at e pi eces of base f l ashi ng i n al t er nat e t i l e cour ses. Ext end each pi ece of base f l ashi ng out ont o t he r oof at l east 4 i nches and nai l t o t he deck. Ext end t he st epped base f l ashi ng up

Apr i l 2019 Page 5 SECTI ON 07 62 13 al ong t he wal l not l ess t han 4 i nches and st op beneat h t he cap f l ashi ng or anchor beneat h wood si di ng i n f r ame const r uct i on. Set cap f l ashi ngs i n a r egl et i nt o masonr y and concr et e const r uct i on, and l ap cap f l ashi ng over t he f l ashi ng bel ow not l ess t han 3 i nches. Lap t he st epped base f l ashi ng at ver t i cal j oi nt s bet ween t he sect i ons not l ess t han 3 i nches.

3. 6. 5 Val l ey Fl ashi ng

Val l ey f l ashi ng shal l be f r ee f r om l ongi t udi nal seams and shal l be of a wi dt h suf f i c i ent t o ext end not l ess t han 6 i nches under t he r oof cover i ng on each si de. Lap t he sheet s not l ess t han 8 i nches i n t he di r ect i on of f l ow and secur e t o r oof i ng const r uct i on wi t h c l eat s on each si de. Space cl eat s not mor e t han 24 i nches on cent er s. Do not punct ur e t he copper sheet wi t h nai l s at any pl ace.

3. 6. 5. 1 Open Val l ey Fl ashi ngs

a. Open val l eys shal l be not l ess t han 4 i nches wi de. The pr oper wi dt h shal l be det er mi ned by t he f ol l owi ng r ul e: St ar t i ng at t he t op wi t h a wi dt h of 4 i nches, i ncr ease t he wi dt h 1 i nch f or ever y 8 f eet of l engt h of t he val l ey. Fl ashi ng pi eces shal l be f ul l l engt h sheet s and of suf f i c i ent wi dt h t o cover t he open por t i on of t he val l ey and ext end up under t he r oof i ng not l ess t han 6 i nch on each si de.

b. Wher e t wo val l eys of unequal s i ze come t oget her ; wher e t he ar eas dr ai ned by t he val l ey ar e unequal ; wher e t he sl ope of t he val l ey i s 26 degr ees or l ess ( 6 i nches or l ess per f oot ; ) or wher e t he i nt er sect i ng r oof s ar e of di f f er ent s l opes, an i nver t ed V- j oi nt 1 i nch hi gh, shal l be pr ovi ded al ong t he cent er l i ne of t he val l ey, and t he edge of t he val l ey sheet s shal l ext end 8 i nches under t he r oof cover i ng on each si de.

3. 6. 5. 2 Cl osed Val l eys

a. Fl ashi ng pi eces f or c l osed val l eys shal l be of suf f i c i ent l engt h t o ext end 2 i nches above t he t op of t he r oof i ng pi ece and l ap t he f l ashi ng pi ece bel ow 3 i nches, and of suf f i c i ent wi dt h t o ext end up t he si des of t he val l ey f ar enough t o make t he val l ey 8 i nches deep.

b. Pl ace f l ashi ng wi t h t he r oof i ng so t hat al l pi eces ar e separ at ed by a cour se of t i l e. Set pi eces so as t o l ap at l east 3 i nches and t o be ent i r el y conceal ed by t he t i l es. Fast en f l ashi ng by nai l s at t he t op edge onl y.

3. 6. 6 Thr ough- Wal l Fl ashi ng

Thr ough- wal l f l ashi ng i ncl udes si l l , l i nt el , and spandr el f l ashi ng. The f l ashi ng shal l be l ai d wi t h a l ayer of mor t ar above and bel ow t he f l ashi ng so t hat t he t ot al t hi ckness of t he t wo l ayer s of t he mor t ar and f l ashi ng ar e t he same t hi ckness as t he r egul ar mor t ar j oi nt s. Fl ashi ng shal l be one pi ece f or l i nt el s and si l l s .

3. 6. 6. 1 Li nt el Fl ashi ng

Ext end l i nt el f l ashi ng t he f ul l l engt h of l i nt el . Ext end i t t hr ough t he wal l one masonr y cour se above t he l i nt el s and bend down over t he t op of masonr y and pr ecast concr et e l i nt el s. Under l ay bedj oi nt s of l i nt el s at cont r ol j oi nt s wi t h sheet met al bond br eaker .

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3. 6. 6. 2 Si l l Fl ashi ng

Ext end si l l f l ashi ng t he f ul l wi dt h of t he s i l l and not l ess t han 4 i nches beyond ends of s i l l except at a cont r ol j oi nt wher e t he f l ashi ng i s t er mi nat ed at t he end of t he s i l l .

3. 6. 7 Eave and Rake Fl ashi ngs

Pl ace eave and r ake f l ashi ngs i n accor dance wi t h SMACNA 1793.

3. 7 REGLETS

Regl et s shal l be a f act or y f abr i cat ed pr oduct , compl et e wi t h f i t t i ngs and speci al shapes as may be r equi r ed. Open- t ype r egl et s shal l be f i l l ed wi t h f i ber boar d or ot her sui t abl e separ at or t o pr event cr ushi ng of t he s l ot dur i ng i nst al l at i on. Regl et s shal l be l ocat ed not l ess t han 8 i nches nor mor e t han 16 i nches above r oof i ng not havi ng cant st r i ps or shal l be l ocat ed not l ess t han 5 i nches nor mor e t han 13 i nches above cant st r i p.

Regl et pl ugs shal l be spaced not over 12 i nches on cent er s and r egl et gr ooves shal l be f i l l ed wi t h seal ant . Fr i ct i on or s l ot - t ype r egl et s shal l have met al f l ashi ngs i nser t ed t he f ul l dept h of s l ot and shal l be l i ght l y punched ever y 12 i nches t o cr i mp t he r egl et and cap f l ashi ng t oget her .

3. 8 GRAVEL STOPS AND FASCI A

Fabr i cat e sheet s wi t hout l ongi t udi nal j oi nt s except wher e 2- pi ece f asci ae ar e used when f asci a dept h exceeds 7 i nches. Pr ovi de pr ovi s i on f or expansi on at j oi nt s. Fact or y f abr i cat ed i nt er nal and ext er nal cor ner uni t s wi t h mi t er ed j oi nt s shal l be pr ovi ded. Roof f l ange and spl i ce pl at e of t he gr avel st op and f asci a shal l ext end out on t he r oof not l ess t han 4 i nches, and shal l be set i n bi t umi nous cement over t he r oof i ng f el t . Roof f l ange shal l be secur ed wi t h nai l s spaced not gr eat er t han 3 i nches on cent er s l ocat ed wi t hi n 1 i nch of t he out er edge of t he f l ange. The f asci a sect i on shal l not be f ace nai l ed except as speci f i ed f or 2- pi ece f asci ae.

The upper pi ece of t wo- pi ece f asci a shal l be t he same as speci f i ed above except t hat t he f asci a dept h shal l be at l east 3- 1/ 2 i nches, and shal l over l ap t he l ower f asci a not l ess t han 2 i nches. The l ower pi ece shal l be hooked 1/ 2 i nch over edge st r i p and spl i ce pl at e and f ace nai l ed on 12 i nch cent er s 1 i nch bel ow t op of sheet . The upper f asci a shal l be hemmed 1/ 2 i nch at l ower edge and shal l be f or med t o f i t t i ght agai nst l ower f asci a.

3. 9 DOWNSPOUTS

Downspout s shal l be set pl umb and not l ess t han 1 i nch f r om t he wal l .

Leader s shal l connect gut t er s on over hangi ng eaves t o downspout s. Leader s shal l be set wi t h a s l ope not l ess t han 0. 3 degr ees, 1/ 16 i nch per f oot or mor e t han 30 degr ees bel ow a hor i zont al l i ne. Leader s shal l f i t over t he out l et t ube i n gut t er bot t om and shal l f i t i nt o and be r i vet ed t o t he downspout . Ri vet spaci ng shal l be not mor e t han 2 i nches. St r ai ner s shal l be set l oosel y i n t he eave t ube openi ng i n gut t er . Joi nt s bet ween l engt hs of downspout s shal l be made by t el escopi ng t he end of t he upper l engt hs at l east 3/ 4 i nch i nt o t he l ower l engt h. Downspout s t er mi nat i ng i n dr ai nage l i nes shal l be neat l y f i t t ed i nt o downspout boot s and t he j oi nt f i l l ed wi t h a por t l and cement mor t ar cap sl oped away f r om downspout . Downspout s t er mi nat i ng at spl ash bl ocks or spl ash pans shal l be pr ovi ded wi t h st ock el bow- t ype f i t t i ngs. Downspout hanger s shal l be pr ovi ded adj acent t o t he j oi nt at t he t op of each sect i on of downspout , except t hat t he bot t om sect i on shal l have an addi t i onal st r ap adj acent t o t he bot t om j oi nt when spl ash bl ocks or spl ash pans ar e r equi r ed. Hanger s

Apr i l 2019 Page 7 SECTI ON 07 62 13 shal l be 1/ 16 x 1 i nch f l at st ock of t he same mat er i al as t he downspout .

3. 10 GUTTERS

Ter mi nat e gut t er s at l east 1/ 2 i nch away f r om ver t i cal sur f aces. [ Anchor suppor t i ng c l eat s t o t he st r uct ur e at spaci ngs not exceedi ng 16 i nches. ] [ Fast en gut t er br acket s and spacer st o r oof nai l er by scr ews or def or med shank- t ype nai l s and i nt er l ock wi t h or f ast en t o t he l eadi ng edge of gut t er . Gut t er spacer s shal l be 1/ 16 x 1 i nch f l at - st ock of t he same mat er i al as t he gut t er . Al t er nat e br acket s and spacer s at not mor e t han 36 i nches on cent er s. ] hang gut t er s wi t h hi gh poi nt s at ends or equi di st ant f r om downspout s and [ l evel ] [ s l ope not l ess t han 0. 3 degr ees 1/ 16 i nch per f oot ] .

3. 11 SCUPPER LI NI NGS

Li ne t he i nt er i or of scupper openi ngs wi t h sheet met al . For m t he l i ni ng t o r et ur n not l ess t han 1 i nch agai nst bot h f aces of t he wal l or par apet wi t h t he out si de edges f ol ded under 1/ 2 i nch l ess on t he t op and si des.

The per i met er of t he l i ni ng shal l be appr oxi mat el y 1/ 2 i nch l ess t han t he per i met er of t he scupper . Joi n t he t op and si des of scupper s on t he r oof - deck si de t o base f l ashi ng by a l ocked and sol der ed j oi nt . Joi n t he bot t om edge by a l ocked and sol der ed j oi nt t o t he base f l ashi ng and wher e r equi r ed, f or m wi t h a r i dge t o act as a gr avel st op ar ound t he scupper i nl et . Coat sur f aces t o r ecei ve t he l i ni ng wi t h bi t umi nous cement .

3. 12 SPLASH PANS

I nst al l spl ash pans wher e downspout s di schar ge on r oof sur f aces and at ot her l ocat i ons as i ndi cat ed. Pans shal l be of s i ze i ndi cat ed. Pans and r oof f l anges shal l be bedded i n pl ast i c bi t umi nous cement and st r i p flashed.

3. 13 CONTRACTOR QUALI TY CONTROL

Est abl i sh and mai nt ai n a qual i t y cont r ol pr ocedur e f or sheet met al used i n conj unct i on wi t h r oof i ng t o assur e compl i ance of t he i nst al l ed sheet met al wor k wi t h t he cont r act r equi r ement s. Pr ompt l y r emove and r epl ace or cor r ect any wor k f ound not t o be i n compl i ance wi t h t he cont r act i n an appr oved manner . Submi t a Qual i t y Assur ance Pl an, i ncl udi ng a checkl i st of poi nt s t o be obser ved, pr i or t o st ar t of r oof i ng wor k. Qual i t y cont r ol shal l i ncl ude, but not be l i mi t ed t o, t he f ol l owi ng:

a. Obser vat i on of envi r onment al condi t i ons; number and ski l l l evel of sheet met al wor ker s; condi t i on of subst r at e.

b. Ver i f i cat i on of compl i ance of mat er i al s bef or e, dur i ng, and af t er installation.

c. I nspect i on of sheet met al wor k, f or pr oper s i ze and t hi ckness, f ast eni ng and j oi ni ng, and pr oper i nst al l at i on.

The act ual qual i t y cont r ol obser vat i ons and i nspect i ons shal l be document ed and a copy of t he document at i on f ur ni shed t o t he Cont r act i ng Of f i cer at t he end of each day.

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TABLE 1 - COPPER SHEET METAL WEI GHTS AND THI CKNESSES

I t em Descr i pt i on Copper ( oz/ squar e f oot )

Bui l di ng expansi on j oi nt s: Cap 16

Bui l di ng expansi on j oi nt s: Wat er st op -bel l ows or f l anged- U- t ype

Cl eat s ( Cont i nuous) 24

Cover i ng on mi nor f l at , pi t ched or cur ved sur f aces

Downspout s, heads and l eader s 16

Fl ashi ngs: Base 20

Fl ashi ngs: Cap, st epped or val l ey 16

Gr avel st ops and f asci ae: Sheet s, corrugated

Gut t er s ( gi r t h) : Up t o15 i nches 16

Gut t er s ( gi r t h) : 15 t o 20 i nches 16

Gut t er s ( gi r t h) : 20 t o 25 i nches 20

Gut t er s ( gi r t h) : 25 t o 30 i nches 24

Gut t er br acket s ( gi r t h) : Up t o15 i nches 1/ 8 x 1 i nch

Gut t er br acket s ( gi r t h) : 15 t o 20 i nches 1/ 4 x 1 i nch

Gut t er br acket s ( gi r t h) : 20 t o 24 i nches 1/ 4 x 1 1/ 2 i nch

Gut t er c l eat s and cover pl at es 16

Scupper l i ni ng 20

St r ai ner s ( wi r e gauge) No. 9

Regl et s ( 1) 10

Spl ash pans 16

Copings 16

Pi t ch pocket s 16

Thr ough- wal l , f l ashi ngs above r oof l i ne 16

Thr ough- wal l , bel ow r oof l i ne, except as ot her wi se speci f i ed i n par agr aph

MATERIALS

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TABLE 2 - COPPER SHEET METAL JOI NTS

I t em Desi gnat i on Type of Joi nt

Bui l di ng expansi on j oi nt at r oof 1- 1/ 4 i nch si ngl e l ock st andi ng seam, cleated

Cl eat s ( Cont i nuous) Butt

Fl ashi ngs: Base 1 i nch f l at l ocked, sol der ed 3 i nch l ap f or expansi on j oi nt

Cap - i n r egl et 3 i nch l ap

Cap - t wo - pi ece Recei ver 3 i nch l ap Cap pi ece 3 i nch l ap

Stepped 3 i nch l ap

Thr ough- wal l spandr el f l ashi ng ( met al 1- 1/ 2 i nch mechani cal i nt er l ock

Valley 6 i nch l ap, c l eat ed

Sheet , cor r ugat ed But t wi t h 1/ 4 i nch

Sheet , smoot h But t wi t h 1/ 4 i nch space

Gutters 1- 1/ 2 i nch l ap, r i vet ed and sol der ed

Pi t ch pocket s 1 i nch sol der ed l ap

Reglets But t j oi nt

- - End of Sect i on - -

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