Attachment 9 - Spec Section 05 51 33.pdf

JBC Repai r Chi l d Devel opment Cent er Bl dg. 227 S19070

WARNI NG: Text i n

SECTI ON TABLE OF CONTENTS

DI VI SI ON 05 - METALS

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METAL LADDERS

02/ 16, CHG 2: 02/ 18

PART 1 GENERAL

1. 1 REFERENCES

1. 2 SUBMI TTALS

1. 3 CERTI FI CATES

1. 4 QUALI FI CATI ON OF WELDERS

1. 5 DELI VERY, STORAGE, AND PROTECTI ON

PART 2 PRODUCTS

2. 1 MATERI ALS

2. 1. 1 St r uct ur al Car bon St eel

2. 1. 2 St r uct ur al Tubi ng

2. 1. 3 St eel Pi pe

2. 1. 4 Fi t t i ngs f or St eel Pi pe

2. 1. 5 Al umi num Al l oy Pr oduct s

2. 2 FABRI CATI ON FI NI SHES

2. 2. 1 Gal vani z i ng

2. 2. 2 Gal vani ze

2. 2. 3 Repai r of Zi nc- Coat ed Sur f aces

2. 2. 4 Shop Cl eani ng and Pai nt i ng

2. 2. 4. 1 Sur f ace Pr epar at i on

2. 2. 4. 2 Pr et r eat ment , Pr i mi ng and Pai nt i ng

2. 2. 5 Nonf er r ous Met al Sur f aces

2. 3 LADDERS

2. 3. 1 Shi p' s Ladder

2. 4 St eel St ai r s

2. 4. 1 Desi gn Loads

2. 4. 2 Mat er i al s

PART 3 EXECUTI ON

3. 1 GENERAL I NSTALLATI ON REQUI REMENTS

3. 2 WORKMANSHI P

3. 3 ANCHORAGE, FASTENI NGS, AND CONNECTI ONS

3. 4 WELDI NG

3. 5 FI NI SHES

3. 5. 1 Di ss i mi l ar Mat er i al s

3. 5. 2 Fi el d Pr epar at i on

3. 5. 3 Envi r onment al Condi t i ons

3. 6 LADDERS & STAI RS

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SECTI ON 05 51 33

METAL LADDERS

02/ 16, CHG 2: 02/ 18

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 LADDER I NSTI TUTE ( ALI )

ALI A14. 3 ( 2008; R 2018) Ladder s - Fi xed - Saf et y Requirements

AMERI CAN WELDI NG SOCI ETY ( AWS)

AWS D1. 1/ D1. 1M ( 2020) St r uct ur al Wel di ng Code - St eel

ASTM I NTERNATI ONAL ( ASTM)

ASTM A36/ A36M ( 2019) St andar d Speci f i cat i on f or Car bon St r uct ur al St eel

ASTM A47/ A47M ( 1999; R 2018; E 2018) St andar d Speci f i cat i on f or Fer r i t i c Mal l eabl e I r on Cast i ngs

ASTM A53/ A53M ( 2020) St andar d Speci f i cat i on f or Pi pe, St eel , Bl ack and Hot - Di pped, Zi nc- Coat ed, Wel ded and Seaml ess

ASTM A123/ A123M ( 2017) St andar d Speci f i cat i on f or Zi nc ( Hot - Di p Gal vani zed) Coat i ngs on I r on and St eel Pr oduct s

ASTM A153/ A153M ( 2016a) St andar d Speci f i cat i on f or Zi nc Coat i ng ( Hot - Di p) on I r on and St eel Hardware

ASTM A500/ A500M ( 2021) St andar d Speci f i cat i on f or Col d- For med Wel ded and Seaml ess Car bon St eel St r uct ur al Tubi ng i n Rounds and Shapes

ASTM A653/ A653M ( 2020) 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 A780/ A780M ( 2020) St andar d Pr act i ce f or Repai r of Damaged and Uncoat ed Ar eas of Hot - Di p Gal vani zed Coat i ngs

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ASTM A924/ A924M ( 2020) St andar d Speci f i cat i on f or Gener al Requi r ement s f or St eel Sheet , Met al l i c- Coat ed by t he Hot - Di p Pr ocess

ASTM B26/ B26M ( 2018; E 2018) St andar d Speci f i cat i on f or Al umi num- Al l oy Sand Cast i ngs

ASTM B108/ B108M ( 2019) St andar d Speci f i cat i on f or Al umi num- Al l oy Per manent Mol d Cast i ngs

ASTM B209 ( 2014) St andar d Speci f i cat i on f or Al umi num and Al umi num- Al l oy Sheet and Plate

ASTM B221 ( 2020) St andar d Speci f i cat i on f or Al umi num and Al umi num- Al l oy Ext r uded Bar s, Rods, Wi r e, Pr of i l es, and Tubes

ASTM D1187/ D1187M ( 1997; E 2011; R 2011) Asphal t - Base Emul si ons f or Use as Pr ot ect i ve Coat i ngs f or Met al

MASTER PAI NTERS I NSTI TUTE ( MPI )

MPI 79 ( 2016) Pr i mer , Al kyd, Ant i - Cor r osi ve f or Met al

SOCI ETY FOR PROTECTI VE COATI NGS ( SSPC)

SSPC SP 3 ( 2018) Power Tool Cl eani ng

SSPC SP 6/ NACE No. 3 ( 2007) Commer ci al Bl ast Cl eani ng

U. S. NATI ONAL ARCHI VES AND RECORDS ADMI NI STRATI ON ( NARA)

29 CFR 1910. 23 ( Nov 2016) Ladder s

1. 2 SUBMITTALS

Gover nment appr oval i s r equi r ed f or submi t t al s wi t h a " G" or " S" c l assi f i cat i on. Submi t t al s not havi ng a " G" or " S" c l assi f i cat 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- 02 Shop Dr awi ngs

Ladders ; G

Shi p' s Ladder ; G

St eel St ai r s; G

SD- 07 Cer t i f i cat es

Fabr i cat or Cer t i f i cat i on f or Ladder and st ai r Assembly

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1. 3 CERTIFICATES

Provide f abr i cat or cer t i f i cat i on f or l adder and st ai r assembly st at i ng t hat t he l adder and associ at ed component s have been f abr i cat ed accor di ng t o t he r equi r ement s of 29 CFR 1910. 23.

1. 4 QUALI FI CATI ON OF WELDERS

Qual i f y wel der s i n accor dance wi t h AWS D1. 1/ D1. 1M. Use pr ocedur es, mat er i al s, and equi pment of t he t ype r equi r ed f or t he wor k.

1. 5 DELI VERY, STORAGE, AND PROTECTI ON

Pr ot ect f r om cor r osi on, def or mat i on, and ot her t ypes of damage. St or e i t ems i n an encl osed ar ea f r ee f r om cont act wi t h soi l and weat her .

Remove and r epl ace damaged i t ems wi t h new i t ems.

PART 2 PRODUCTS

2. 1 MATERIALS

2. 1. 1 St r uct ur al Car bon St eel

ASTM A36/ A36M.

2. 1. 2 St r uct ur al Tubi ng

ASTM A500/ A500M.

2. 1. 3 St eel Pi pe

ASTM A53/ A53M, Type E or S, Gr ade B.

2. 1. 4 Fi t t i ngs f or St eel Pi pe

St andar d mal l eabl e i r on f i t t i ngs ASTM A47/ A47M.

2. 1. 5 Al umi num Al l oy Pr oduct s

Conf or m t o ASTM B209 f or sheet pl at e, ASTM B221 f or ext r usi ons and ASTM B26/ B26M or ASTM B108/ B108M f or cast i ngs, as appl i cabl e. Pr ovi de al umi num ext r usi ons at l east 1/ 8 i nch t hi ck and al umi num pl at e or sheet at l east 0. 050 i nch t hi ck.

2. 2 FABRI CATI ON FI NI SHES

2. 2. 1 Galvanizing

Hot - di p gal vani ze i t ems speci f i ed t o be z i nc- coat ed, af t er f abr i cat i on wher e pr act i cabl e. Gal vani z i ng: ASTM A123/ A123M, ASTM A153/ A153M, ASTM A653/ A653M or ASTM A924/ A924M, G90, as appl i cabl e.

2. 2. 2 Galvanize

Anchor bol t s, washer s, and par t s or devi ces necessar y f or pr oper i nst al l at i on, unl ess i ndi cat ed ot her wi se.

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2. 2. 3 Repai r of Zi nc- Coat ed Sur f aces

Repai r damaged sur f aces wi t h gal vani z i ng r epai r met hod and pai nt conf or mi ng t o ASTM A780/ A780M or by appl i cat i on of st i ck or t hi ck past e mat er i al speci f i cal l y desi gned f or r epai r of gal vani z i ng, as appr oved by Cont r act i ng Of f i cer . Cl ean ar eas t o be r epai r ed and r emove sl ag f r om wel ds. Heat sur f aces t o whi ch st i ck or past e mat er i al i s appl i ed, wi t h a t or ch t o a t emper at ur e suf f i c i ent t o mel t t he met al l i cs i n st i ck or past e; spr ead mol t en mat er i al uni f or ml y over sur f aces t o be coat ed and wi pe of f excess mat er i al .

2. 2. 4 Shop Cl eani ng and Pai nt i ng

2. 2. 4. 1 Sur f ace Pr epar at i on

Bl ast c l ean sur f aces i n accor dance wi t h SSPC SP 6/ NACE No. 3. Sur f aces t hat wi l l be exposed i n spaces above cei l i ng or i n at t i c spaces, cr awl spaces, f ur r ed spaces, and chases may be c l eaned i n accor dance wi t h SSPC SP 3 i n l i eu of bei ng bl ast c l eaned. Wash cl eaned sur f aces whi ch become cont ami nat ed wi t h r ust , di r t , oi l , gr ease, or ot her cont ami nant s wi t h sol vent s unt i l t hor oughl y c l ean.

2. 2. 4. 2 Pr et r eat ment , Pr i mi ng and Pai nt i ng

Appl y pr et r eat ment , pr i mer , and pai nt i n accor dance wi t h manuf act ur er ' s pr i nt ed i nst r uct i ons.

2. 2. 5 Nonf er r ous Met al Sur f aces

Pr ot ect by pl at i ng, anodi c, or or gani c coat i ngs.

2. 3 LADDERS

Fabr i cat e ver t i cal l adder s conf or mi ng t o 29 CFR 1910. 23 and Sect i on 5 of ALI A14. 3. Ladder s shal l be capabl e of suppor t i ng t hei r maxi mum i nt ended l oad. Use 2 1/ 2 by 3/ 8 i nch st eel f l at s f or st r i nger s and 3/ 4 inch di amet er st eel r ods f or r ungs. Ladder r ungs, st ep and cl eat s must be spaced not l ess t han 10 i nches and not mor e t han 16 i nches wi de ( measur ed bef or e i nst al l at i on of l adder saf et y syst em) , spaced no mor e than 14 i nches apar t , pl ug wel ded or shoul der ed and headed i nt o st r i nger s. I nst al l l adder s so t hat t he maxi mum per pendi cul ar di st ance f r om t he cent er l i ne of t he st eps or r ungs, or gr ab bar s, or bot h, t o t he near est per manent obj ect i n t he back of t he l adder or t o t he f i ni shed wal l sur f ace wi l l not be l ess t han 7 i nches, except f or t he el evat or pi t l adder s, whi ch have a mi ni mum per pendi cul ar di st ance of 4. 5 i nches.

Pr ovi de heavy c l i p angl es r i vet ed or bol t ed t o t he st r i nger and dr i l l ed as i ndi cat ed. Pr ovi de i nt er medi at e c l i p angl es not over 48 i nches on cent er s. The t op r ung of t he l adder must be l evel wi t h t he t op of t he access l evel , par apet or l andi ng ser ved by t he l adder except f or hat ches or wel l s. Ext end t he s i de r ai l s of t hr ough or s i de st ep l adder s 42 inches above t he access l evel . Pr ovi de l adder access pr ot ect i ve swi ng gat es at t he t op of access/ egr ess l evel . The dr awi ngs must i ndi cat e l adder l ocat i ons and det ai l s of cr i t i cal di mensi ons and mat er i al s.

2. 3. 1 Shi p' s Ladder

Fabr i cat e st r i nger s and f r ami ng of st eel pl at e or shapes. Bol t , r i vet or wel d connect i ons and anchor t o suppor t i ng const r uct i on. Pr ovi de t r eads wi t h non- sl i p sur f ace as speci f i ed f or saf et y t r eads. Desi gn

SECTI ON 05 51 33 Page 5 assembl y, i ncl udi ng t r ead connect i ons and met hods of at t achment , t o suppor t a l i ve l oad of 300 pounds per t r ead. Pr ovi de r ai l i ngs as speci f i ed f or met al handr ai l s .

2. 4 St eel St ai r s

Pr ovi de st eel st ai r s compl et e wi t h st r i nger s, st eel - pl at e t r eads and r i ser s, l andi ngs, col umns, handr ai l s , and necessar y bol t s and ot her f ast eni ngs. Shop pr i me st eel st ai r s and accessor i es.

2. 4. 1 Desi gn Loads

Desi gn st ai r s t o sust ai n a l i ve l oad of not l ess t han 100 pounds per squar e f oot , or a concent r at ed l oad of 300 l bs appl i ed wher e i t i s most cr i t i cal . Except f or a commer ci al pr oduct , desi gn and f abr i cat e st eel st ai r s t o conf or m t o AI SC 360.

2. 4. 2 Materials

Pr ovi de st eel st ai r s of wel ded const r uct i on except t hat bol t s may be used wher e wel di ng i s not pr act i cabl e. Do not use scr ew or scr ew- t ype connections.

a. St r uct ur al St eel : ASTM A36/ A36M.

b. Suppor t st eel f l oor pl at e on angl e c l eat s wel ded t o st r i nger s or t r eads wi t h i nt egr al c l eat s, wel ded or bol t ed t o t he st r i nger .

Cl ose exposed ends.

e. Bef or e f abr i cat i on, obt ai n necessar y f i el d measur ement s and ver i f y dr awi ng di mensi ons.

f . Cl ean met al sur f aces f r ee of mi l l scal e, f l ake r ust , and r ust pi t t i ng bef or e shop f i ni shi ng. Wel d per manent connect i ons. Fi ni sh wel ds f l ush and smoot h on sur f aces t hat wi l l be exposed af t er installation.

PART 3 EXECUTI ON

3. 1 GENERAL I NSTALLATI ON REQUI REMENTS

I nst al l i t ems at l ocat i ons i ndi cat ed, accor di ng t o manuf act ur er ' s i nst r uct i ons. Ver i f y al l measur ement s and t ake al l f i el d measur ement s necessar y bef or e f abr i cat i on. Pr ovi de Exposed f ast eni ngs of compat i bl e mat er i al s, gener al l y mat chi ng i n col or and f i ni sh, and har moni ze wi t h t he mat er i al t o whi ch f ast eni ngs ar e appl i ed. I nc l ude mat er i al s and par t s necessar y t o compl et e each i t em, even t hough such wor k i s not def i ni t el y shown or speci f i ed. Poor mat chi ng of hol es f or f ast ener s wi l l be cause f or r ej ect i on. Conceal f ast eni ngs wher e pr act i cabl e.

Thi ckness of met al and det ai l s of assembl y and suppor t s must pr ovi de st r engt h and st i f f ness. For med j oi nt s exposed t o t he weat her t o excl ude wat er . I t ems l i s t ed bel ow r equi r e addi t i onal pr ocedur es.

3. 2 WORKMANSHIP

Met al wor k must be wel l f or med t o shape and si ze, wi t h shar p l i nes and angl es and t r ue cur ves. Dr i l l i ng and punchi ng must pr oduce cl ean t r ue l i nes and sur f aces. Cont i nuousl y wel d al ong t he ent i r e ar ea of cont act . Do not t ack wel d exposed connect i ons of wor k i n pl ace. Gr i d

SECTI ON 05 51 33 Page 6 smoot h exposed wel ds. Pr ovi de smoot h f i ni sh on exposed sur f aces of wor k i n pl ace, unl ess ot her wi se appr oved. Wher e t i ght f i t s ar e r equi r ed, mi l l j oi nt s. Cope or mi t er cor ner j oi nt s, wel l f or med, and i n t r ue al i gnment . I nst al l i n accor dance wi t h manuf act ur er ' s i nst al l at i on i nst r uct i ons and appr oved dr awi ngs, cut s, and det ai l s .

3. 3 ANCHORAGE, FASTENI NGS, AND CONNECTI ONS

Pr ovi de anchor age wher e necessar y f or f ast eni ng met al i t ems secur el y i n pl ace. I ncl ude f or anchor age not ot her wi se speci f i ed or i ndi cat ed s l ot t ed i nser t s, expansi on anchor s, and powder - act uat ed f ast ener s, when appr oved f or concr et e; t oggl e bol t s and t hr ough bol t s f or masonr y;

machi ne bol t s, car r i age bol t s and powder - act uat ed t hr eaded st uds f or st eel ; t hr ough bol t s, l ag bol t s, and scr ews f or wood. Do not use wood pl ugs i n any mat er i al . Pr ovi de non- f er r ous at t achment s f or non- f er r ous met al . Make exposed f ast eni ngs of compat i bl e mat er i al s, gener al l y mat chi ng i n col or and f i ni sh, t o whi ch f ast eni ngs ar e appl i ed. Conceal f ast eni ngs wher e pr act i cabl e.

3. 4 WELDING

Per f or m wel di ng, wel di ng i nspect i on, and cor r ect i ve wel di ng, i n accor dance wi t h AWS D1. 1/ D1. 1M. Use cont i nuous wel ds on al l exposed connect i ons. Gr i nd v i s i bl e wel ds smoot h i n t he f i ni shed i nst al l at i on.

3. 5 FINISHES

3. 5. 1 Di ssi mi l ar Mat er i al s

Wher e di ssi mi l ar met al s ar e i n cont act , pr ot ect sur f aces wi t h a coat conf or mi ng t o MPI 79 t o pr event gal vani c or cor r osi ve act i on. Wher e al umi num i s i n cont act wi t h concr et e, pl ast er , mor t ar , masonr y, wood, or absor pt i ve mat er i al s subj ect t o wet t i ng, pr ot ect wi t h ASTM D1187/ D1187M, asphal t - base emul si on.

3. 5. 2 Fi el d Pr epar at i on

Remove r ust pr event i ve coat i ng j ust pr i or t o f i el d er ect i on, usi ng a r emover appr oved by t he r ust pr event i ve manuf act ur er . Sur f aces, when assembl ed, must be f r ee of r ust , gr ease, di r t and ot her f or ei gn mat t er .

3. 5. 3 Envi r onment al Condi t i ons

Do not c l ean or pai nt sur f ace when damp or exposed t o f oggy or r ai ny weat her , when met al l i c sur f ace t emper at ur e i s l ess t han 5 degr ees F above t he dew poi nt of t he sur r oundi ng ai r , or when sur f ace t emper at ur e i s bel ow 45 degr ees F or over 95 degr ees F, unl ess appr oved by t he Cont r act i ng Of f i cer .

3. 6 LADDERS & STAI RS

Secur e t o t he adj acent const r uct i on wi t h t he c l i p angl es at t ached t o t he st r i nger . I nst al l i nt er medi at e c l i p angl es not over 48 i nches on cent er . I nst al l br acket s as r equi r ed f or secur i ng of l adder s & st ai r s wel ded or bol t ed t o st r uct ur al st eel or bui l t i nt o t he masonr y or concrete.

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2.2.5 Nonferrous Metal Surfaces

3.6 LADDERS & STAIRS