Technical_Specifications,_(Revised_Section)_35_43_29.pdf

Char l er oi Locks and Dam St i l l i ng Basi n & Abut ment Pr ot ect i on Wal l

SECTI ON TABLE OF CONTENTS

DI VI SI ON 35 - WATERWAY AND MARI NE CONSTRUCTI ON

SECTI ON 35 43 29

GROUT BAG SCOUR PROTECTI ON

PART 1 GENERAL

1. 1 SUMMARY

1. 2 SUBMI TTALS

1. 3 REFERENCES

1. 4 DELI VERY, STORAGE, AND HANDLI NG

1. 5 DESI GN REQUI REMENTS

1. 5. 1 Gr out Mi xt ur e Pr opor t i ons

1. 5. 1. 1 Compr essi ve St r engt h

1. 5. 1. 2 Maxi mum Wat er - Cement ( w/ c) Rat i o

1. 5. 1. 3 Sl ump Fl ow

1. 5. 1. 4 Washout Resi st ance

1. 5. 1. 5 Bl eed

1. 5. 1. 6 Ai r Cont ent

PART 2 PRODUCTS

2. 1 MATERI ALS REQUI REMENTS

2. 1. 1 Gr out

2. 1. 1. 1 Por t l and Cement

2. 1. 1. 2 Aggr egat es

2. 1. 1. 2. 1 Aggr egat e Expansi on

2. 1. 1. 2. 2 Unf avor abl e Pr oper t i es

2. 1. 1. 2. 3 Gr out

2. 1. 1. 2. 4 Coar se Aggr egat e

2. 1. 1. 3 Wat er

2. 1. 1. 4 Admi xt ur es

2. 1. 1. 5 Fl y Ash

2. 1. 1. 6 Si l i ca Fume

2. 1. 1. 7 Fl ui di f i er

2. 1. 2 Fabr i c

2. 1. 2. 1 Gr out Bags

2. 1. 2. 2 Sel f - Seal i ng Fi l l i ng/ Vent i ng Por t s

2. 1. 2. 3 Mi l l Wi dt hs

2. 1. 2. 4 Seams

2. 1. 3 Shape Cor ds, Cabl es and Connect i ng Har dwar e

2. 1. 4 Beddi ng Mat er i al

2. 1. 5 Geogr i d Rei nf or cement

2. 1. 6 Dowel s or Rebar

2. 1. 7 For ms

2. 1. 8 PVC Pi pe

PART 3 EXECUTI ON

3. 1 EQUI PMENT

3. 1. 1 Gr out i ng Equi pment

3. 1. 1. 1 Gr out Mi xer

3. 1. 1. 2 Gr out Pump

3. 1. 1. 3 Hol di ng Tank

3. 1. 1. 4 Val ves, Gauges, Gr out Li nes, Header s and Accessor i es

SECTI ON 35 43 29 Page 1 Cer t i f i ed Fi nal Document s Revi sed by Amendment 0001

3. 1. 2 Gr out Bag Ji g

3. 1. 3 Cr anes and Fl oat i ng Pl ant

3. 2 MI X DESI GNS

3. 2. 1 Fi el d Mi x- Desi gn Test i ng

3. 2. 2 Ot her Mi x Desi gns

3. 3 CONSTRUCTI ON AND I NSTALLATI ON REQUI REMENTS

3. 3. 1 Const r uct i on Tol er ances

3. 3. 2 Si t e Pr epar at i on

3. 3. 3 Geogr i d and Empt y Gr out Bag Pl acement

3. 3. 4 Gr out Pl acement

3. 3. 5 Apr on Ti e- I n El ement

3. 3. 6 I nt er r upt ed Gr out Pl acement

3. 4 COMMUNI CATI ONS

3. 5 CONTRACTOR QUALI TY CONTROL

3. 6 ENVI RONMENTAL RESTRI CTI ONS

- - End of Sect i on Tabl e of Cont ent s - -

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SECTI ON 35 43 29

GROUT BAG SCOUR PROTECTI ON

PART 1 GENERAL

1. 1 SUMMARY

Thi s sect i on addr esses t he r equi r ement s f or i nst al l at i on of gr out f i l l ed bags and t he cast - i n- pl ace apr on t i e- i n el ement f or scour pr ot ect i on downst r eam of t he exi st i ng dam apr on and adj acent t o t he abut ment pr ot ect i on wal l , i n conf or mance wi t h t hese speci f i cat i ons and i n accor dance wi t h t he l i nes, gr ades and el evat i ons shown on t he dr awi ngs.

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" desi gnat i on;

submi t t al s not havi ng a " G" desi gnat i on ar e f or 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 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

Gr out Bag I nst al l at i on Pl an; G, DO

Submi t t o t he Cont r act i ng Of f i cer a Gr out Bag I nst al l at i on Pl an at l east 90 cal endar days pr i or t o begi nni ng gr out bag i nst al l at i on. The pl an must i ncl ude t he l ocat i on of speci f i c bags. The pl an must be subj ect t o r evi ew and comment by t he Cont r act i ng Of f i cer and shal l be modi f i ed, i f necessar y pendi ng r esul t s of t he Demonst r at i on Pr oj ect as di scussed i n Sect i on 35 43 29. 15 GROUT BAG DEMONSTRATI ON PROJECT. The Gr out Bag I nst al l at i on Pl an must i ncl ude, but not be l i mi t ed t o, t he f ol l owi ng cont ent :

a. The over al l pr oposed ar r angement of gr out bags and sequence of gr out bag pl acement .

b. Pr ocedur es f or checki ng t he l ocat i on of t he bags t o conf or m wi t h t he l i nes, gr ades, cont our s, and di mensi ons shown on t he dr awi ngs.

c. Det ai l ed pr ocedur es f or pl acement of gr out bags and t he sequence of f i l l i ng of bags wi t h gr out i ncl udi ng pr ocedur es f or i nt er r upt ed pl acement s.

d. Det ai l s of gr out f i l l ed bag i nt er nal and ext er nal r ei nf or cement and t i e- i n t o t he exi st i ng Dam apr on and abut ment pr ot ect i on wal l .

Gr out Bag Pl acement ; G, DO

Submi t Concr et e Gr out Bag Pl acement Pl an at l east 60 cal endar days pr i or t o del i ver y of gr out bags t o t he j ob s i t e.

Del i ver y, St or age, and Handl i ng; G, DO

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Submi t del i ver y, st or age, and handl i ng pl ans f or gr out bags at l east 90 cal endar days pr i or t o del i ver y of gr out bag uni t s t o t he j ob s i t e.

Beddi ng Mat er i al ; G, DO

Submi t t o t he Cont r act i ng Of f i cer f or appr oval t he beddi ng mat er i al sour ce and gr adat i on at l east 60 cal endar days pr i or t o t he st ar t of beddi ng mat er i al pl acement .

SD- 03 Pr oduct Dat a

Gr out ; G, DO Fabr i c; G, DO Shape Cor ds, Cabl es and Connect i ng Har dwar e; G, DO

SD- 05 Desi gn Dat a

Cal cul at i ons and Desi gn Det ai l s; G, DRO

Submi t cal cul at i ons and desi gn det ai l s at t est i ng t o t he sui t abi l i t y of each f abr i c- f or med concr et e gr out bag uni t f or t he pur pose cont empl at ed.

SD- 06 Test Repor t s

Gr out Mi xt ur e Pr opor t i ons; G, DO

Ni net y cal endar days pr i or t o i nst al l at i on of gr out bags, submi t t he mi xt ur e pr opor t i ons t hat wi l l pr oduce gr out of t he qual i t y r equi r ed. Appl i cabl e t est r epor t s must be submi t t ed t o ver i f y t hat t he gr out mi xt ur e pr opor t i ons sel ect ed wi l l pr oduce gr out of t he qual i t y speci f i ed.

SD- 07 Cer t i f i cat es

Fabr i c For ms; G, RO

Submi t cer t i f i cat es at t est i ng t hat t he suppl i ed f abr i c f or ms meet t he cr i t er i a of t hese speci f i cat i ons, as measur ed i n f ul l accor dance wi t h t he t est met hods and st andar ds r ef er enced her ei n.

Cer t i f i cat es must i ncl ude t he f ol l owi ng i nf or mat i on about each f abr i c f or m del i ver ed:

a. Manuf act ur er ' s name and cur r ent addr ess.

b. Ful l pr oduct name.

c. St y l e and pr oduct code number .

d. For m number ( s) .

e. Composi t i on of yar ns.

f . Manuf act ur er ' s cer t i f i cat i on st at ement .

1. 3 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 i n t he t ext by basi c desi gnat i on onl y.

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AMERI CAN CONCRETE I NSTI TUTE I NTERNATI ONAL ( ACI )

ACI 211. 1 ( 1991; R 2009) St andar d Pr act i ce f or Sel ect i ng Pr opor t i ons f or Nor mal , Heavywei ght and Mass Concr et e

ACI 237R ( 2007) Sel f - Consol i dat i ng Concr et e

ASTM I NTERNATI ONAL ( ASTM)

ASTM C117 ( 2017) St andar d Test Met hod f or Mat er i al s Fi ner t han 75- um ( No. 200) Si eve i n Mi ner al Aggr egat es by Washi ng

ASTM C136/ C136M ( 2014) St andar d Test Met hod f or Si eve Anal ysi s of Fi ne and Coar se Aggr egat es

ASTM C150/ C150M ( 2017) St andar d Speci f i cat i on f or Por t l and Cement

ASTM C1240 ( 2014) St andar d Speci f i cat i on f or Si l i ca Fume Used i n Cement i t i ous Mi xt ur es

ASTM C1260 ( 2014) St andar d Test Met hod f or Pot ent i al Al kal i React i v i t y of Aggr egat es ( Mor t ar - Bar Met hod)

ASTM C1567 ( 2013) St andar d Test Met hod f or Pot ent i al Al kal i - Si l i ca React i v i t y of Combi nat i ons of Cement i t i ous Mat er i al s and Aggr egat e ( Accel er at ed Mor t ar - Bar Met hod)

ASTM C1611/ C1611M ( 2014) St andar d Test Met hod f or Sl ump Fl ow of Sel f - Consol i dat i ng Concr et e

ASTM C295/ C295M ( 2012) Pet r ogr aphi c Exami nat i on of Aggr egat es f or Concr et e

ASTM C31/ C31M ( 2018) St andar d Pr act i ce f or Maki ng and Cur i ng Concr et e Test Speci mens i n t he Fi el d

ASTM C39/ C39M ( 2018) St andar d Test Met hod f or Compr essi ve St r engt h of Cyl i ndr i cal Concr et e Speci mens

ASTM C494/ C494M ( 2017) St andar d Speci f i cat i on f or Chemi cal Admi xt ur es f or Concr et e

ASTM C618 ( 2017a) St andar d Speci f i cat i on f or Coal Fl y Ash and Raw or Cal c i ned Nat ur al Pozzol an f or Use i n Concr et e

ASTM C91/ C91M ( 2012) St andar d Speci f i cat i on f or Masonr y Cement

ASTM C937 ( 2016) Gr out Fl ui di f i er f or Pr epl aced- Aggr egat e Concr et e

ASTM D1784 ( 2011) St andar d Speci f i cat i on f or Ri gi d

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Pol y( Vi nyl Chl or i de) ( PVC) Compounds and Chl or i nat ed Pol y( Vi nyl Chl or i de) ( CPVC) Compounds

ASTM D1785 ( 2015; E 2018) St andar d Speci f i cat i on f or Pol y( Vi nyl Chl or i de) ( PVC) , Pl ast i c Pi pe, Schedul es 40, 80, and 120

ASTM D2256/ D2256M ( 2010; R 2015) St andar d Test Met hod f or Tensi l e Pr oper t i es of Yar ns by t he Si ngl e- St r and Met hod

ASTM D4354 ( 2012) Sampl i ng of Geosynt het i cs f or Testing

ASTM D448 ( 2012; R 2017) St andar d Cl assi f i cat i on f or Si zes of Aggr egat e f or Road and Br i dge Construction

ASTM D4491/ D4491M ( 2015) St andar d Test Met hods f or Wat er Per meabi l i t y of Geot ext i l es by Per mi t t i v i t y

ASTM D4595 ( 2017) St andar d Test Met hod f or Tensi l e Pr oper t i es of Geot ext i l es by t he Wi de- Wi dt h St r i p Met hod

ASTM D4751 ( 2016) St andar d Test Met hod f or Det er mi ni ng Appar ent Openi ng Si ze of a Geotextile

ASTM D4759 ( 2011; R 2018) St andar d Pr act i ce f or Det er mi ni ng t he Speci f i cat i on Conf or mance of Geosynt het i cs

ASTM D4873/ D4873M ( 2017) St andar d Gui de f or I dent i f i cat i on, St or age, and Handl i ng of Geosynt het i c Rol l s and Sampl es

ASTM D4884/ D4884M ( 2014a) St r engt h of Sewn or Ther mal l y Bonded Seams of Geot ext i l es

ASTM D5199 ( 2012) Measur i ng Nomi nal Thi ckness of Geosynthetics

ASTM D5262 ( 2007; R 2016) St andar d Test Met hod f or Eval uat i ng t he Unconf i ned Tensi on Cr eep Behavi or of Geosynt het i cs

U. S. ARMY CORPS OF ENGI NEERS ( USACE)

COE CRD- C 61 ( 1989A) Test Met hod f or Det er mi ni ng t he Resi st ance of Fr eshl y Mi xed Concr et e t o Washi ng Out i n Wat er

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

FS RR- W- 410 ( Rev H) Wi r e Rope and St r and

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1. 4 DELI VERY, STORAGE, AND HANDLI NG

Del i ver y, st or age, and handl i ng of mat er i al s must conf or m t o t he r equi r ement s speci f i ed her ei n. Pl ans f or t he del i ver y, st or age, and handl i ng of gr out bags must be devel oped and submi t t ed i n accor dance wi t h par agr aph SUBMI TTALS.

The gr out f i l l ed bags must be kept dr y and wr apped such t hat t hey ar e pr ot ect ed f r om t he el ement s dur i ng del i ver y and st or age. I f st or ed out door s, t hey must be el evat ed and pr ot ect ed wi t h a wat er pr oof cover t hat i s opaque t o ul t r avi ol et l i ght . The bags must be l abel ed as per ASTM D4873/ D4873M. The bags must be l abel ed wi t h t he l engt h, wi dt h and t hi ckness di mensi ons of t he bag, and t he bag number , i f appl i cabl e.

Upon del i ver y of gr out bags t o t he s i t e, t he gr out bag cover or box must be i nspect ed f or damage. Cover s t hat ar e r i pped or boxes t hat ar e damaged must be i nspect ed i n det ai l t o det er mi ne t he ext ent of damage t o t he gr out bag. I f i n t he opi ni on of t he Cont r act i ng Of f i cer , t he gr out bag i s damaged and can not be r epai r ed by sewi ng, i t shal l be r ej ect ed and r emoved f r om t he si t e.

1. 5 DESI GN REQUI REMENTS

The physi cal char act er i st i cs of each gr out bag ( aver age t hi ckness, wei ght per uni t ar ea and hydr aul i c r esi st ance) have been desi gned t o wi t hst and t he hydr aul i c l oadi ngs ( vel oci t y, dept h, dur at i on, shear st r ess, pr essur e, and f r equency of i mmer si on) f or t he desi gn di schar ges pr esent .

The Cont r act or must pr ovi de t o t he Cont r act i ng Of f i cer document at i on i n t he f or m of cal cul at i ons and desi gn det ai l s, devel oped by t he gr out bag manuf act ur er and si gned by a Regi st er ed Pr of essi onal Engi neer l i censed i n t he Uni t ed St at es, ver i f y i ng t hat each gr out bag meet s t he physi cal char act er i st i cs pr esent ed f or t he pur pose cont empl at ed, i n accor dance wi t h par agr aph SUBMI TTALS. Each gr out bag must be accept ed onl y when accompani ed by t hi s document at i on.

1. 5. 1 Gr out Mi xt ur e Pr opor t i ons

Gr out mi xt ur e pr opor t i ons must be t he r esponsi bi l i t y of t he Cont r act or .

Mi xt ur e pr opor t i ons must i ncl ude t he dr y wei ght s of cement i t i ous mat er i al ( s) , t he nomi nal s i ze of t he aggr egat e, t he speci f i c gr avi t i es, absor pt i ons, and sat ur at ed sur f ace- dr y wei ght s of aggr egat es, t he quant i t i es, t ypes, and names of admi xt ur es, and quant i t y of wat er per cubi c yar d of concr et e. Al l mat er i al s i ncl uded i n t he mi xt ur e pr opor t i ons must be of t he same t ype and f r om t he same sour ce as wi l l be used on t he pr oj ect .

The gr out shal l be pr opor t i oned t o be sel f - consol i dat i ng i n accor dance with ACI 237RACI 237R. Submi t mi xt ur e desi gns wi t h t he f ol l owi ng properties.

1. 5. 1. 1 Compr essi ve St r engt h

The mi x f or t he gr out bags and apr on t i e- i n el ement must exhi bi t a compr essi ve st r engt h of 6000 psi at 28 days when made and t est ed i n accor dance wi t h ASTM C31/ C31M and ASTM C39/ C39M.

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1. 5. 1. 2 Maxi mum Wat er - Cement ( w/ c) Rat i o

The maxi mum wat er - cement r at i o f or t he gr out shal l be 0. 45. Thi s w/ c may cause l ower st r engt h t han t hat r equi r ed f or compr essi ve st r engt h, and shal l be adj ust ed as necessar y t o achi eve t he r equi r ed st r engt h, subj ect t o t he appr oval of t he Cont r act i ng Of f i cer . The maxi mum w/ c r equi r ed wi l l be t he equi val ent w/ c as det er mi ned by conver si on f r om t he wei ght r at i o of wat er t o cement pl us pozzol an, and si l i ca f ume by t he vol ume equi val ency met hod as descr i bed i n ACI 211. 1. I n t he case wher e si l i ca f ume i s used, t he wei ght of t he s i l i ca f ume shal l be i ncl uded i n t he equat i ons of ACI 211. 1 f or t he t er m P whi ch i s used t o denot e t he wei ght of pozzol an.

The t ot al wei ght of wat er shal l be used, and shal l i ncl ude t he wat er bat ched aggr egat e f r ee moi st ur e, and t he wat er i n t he admi xt ur es.

1. 5. 1. 3 Sl ump Fl ow

Sl ump f l ow as del i ver ed t o t he poi nt of pl acement must be wi t hi n t he l i mi t s of 26 ±2 i nches. Sl ump f l ow must be det er mi ned i n accor dance wi t h

ASTM C1611/ C1611M.

1. 5. 1. 4 Washout Resi st ance

Washout f or t he gr out must be no gr eat er t han 8 per cent and shal l be det er mi ned i n accor dance wi t h COE CRD- C 61.

1. 5. 1. 5 Bleed

Bl eed wat er shal l be r est r i ct ed t o a maxi mum of 2 per cent when t est ed over a per i od of 8- hour s. Test i ng f or bl eed wat er shal l be per f or med as par t of mi xt ur e desi gn and i s not r equi r ed as a per i odi c QC check.

1. 5. 1. 6 Ai r Cont ent

No ai r cont ent i s speci f i ed f or gr out pl aced under wat er and not subj ect t o f r eeze- t haw cycl es.

PART 2 PRODUCTS

2. 1 MATERI ALS REQUI REMENTS

2. 1. 1 Grout

Gr out f or bot h t he gr out bags and t he cast - i n- pl ace apr on t i e- i n el ement must consi st of a mi xt ur e of Por t l and cement , aggr egat e and wat er so pr opor t i oned and mi xed as t o pr ovi de a pumpabl e gr out . Gr out mi x pr opor t i oni ng must be t he r esponsi bi l i t y of t he Cont r act or . Pozzol an, f l y ash, f l ui di f i er or pumpi ng ai d conf or mi ng t o t hi s speci f i cat i on may be used at t he opt i on of t he Cont r act or at no addi t i onal cost t o t he Gover nment , pr ovi ded t he addi t i on of t hese addi t i ves does not i mpact t he compr essi ve st r engt h and f l owabi l i t y r equi r ement s st at ed her ei n.

2. 1. 1. 1 Por t l and Cement

Cement used i n gr out must conf or m t o t he r equi r ement s of ASTM C91/ C91M, ASTM C150/ C150M, Por t l and cement Type I I . St or age of cement must be as di r ect ed by t he Cont r act i ng Of f i cer . Empl oy met hods of handl i ng, t r anspor t i ng, and st or age t hat ar e sat i sf act or y t o t he Cont r act i ng Of f i cer . Onl y cement f ur ni shed i n c l ot h or paper bags wi l l be accept ed f or use i n t he wor k unl ess bul k cement i s appr oved. A suf f i c i ent quant i t y

SECTI ON 35 43 29 Page 8 of cement must be st or ed at or near t he s i t e of t he wor k t o ensur e t hat gr out i ng oper at i ons wi l l not be del ayed due t o shor t age of cement . Car e must be t aken i n st or age and handl i ng t o pr ot ect t he cement f r om cont ami nat i on and moi st ur e. I n t he event t he cement cont ai ns l umps or f or ei gn mat t er t hat wi l l not pass t hr ough a st andar d #100 mesh scr een, t he cement must be r emoved f r om t he wor k s i t e and r epl aced at no cost t o t he Government.

2. 1. 1. 2 Aggregates

2. 1. 1. 2. 1 Aggr egat e Expansi on

Pr ovi de f i ne and coar se aggr egat es wi t h expansi ons l ess t han 0. 08 per cent at 28 days af t er cast i ng when t est i ng i n accor dance wi t h ASTM C1260.

Shoul d t he t est dat a i ndi cat e an expansi on of 0. 08 per cent or gr eat er , r ej ect t he aggr egat e( s) or per f or m addi t i onal t est i ng usi ng ASTM C1567 and usi ng t he pr oposed mi x desi gn. I n t hi s case, i ncl ude t he mi x desi gn l ow al kal i por t l and cement and one of t he f ol l owi ng suppl ement ar y cement i t i ous materials:

a. GGBF sl ag at a mi ni mum of 40 per cent of t ot al cement i t i ous

b. Fl y ash or nat ur al pozzol an at a mi ni mum of t ot al cement i t i ous of

( 1) 30 per cent i f ( Si O2 pl us Al 2O3 pl us Fe2O3) i s 65 per cent or mor e, ( 2) 25 per cent i f ( Si O2 pl us Al 2O3 pl us Fe2O3) i s 70 per cent or mor e, ( 3) 20 per cent i f ( Si O2 pl us Al 2O3 pl us Fe2O3) i s 80 per cent or mor e, ( 4) 15 per cent i f ( Si O2 pl us Al 2O3 pl us Fe2O3) i s 90 per cent or mor e.

I f a combi nat i on of t hese mat er i al s i s chosen, t he mi ni mum amount must be a l i near combi nat i on of t he mi ni mum amount s above. I ncl ude t hese mat er i al s i n suf f i c i ent pr opor t i on t o show l ess t han 0. 08 per cent expansi on at 16 days af t er cast i ng when t est ed i n accor dance wi t h

ASTM C1567.

2. 1. 1. 2. 2 Unf avor abl e Pr oper t i es

Do not pr ovi de aggr egat es possessi ng pr oper t i es or const i t uent s t hat ar e known t o have speci f i c unf avor abl e ef f ect s i n concr et e when t est ed i n accor dance wi t h ASTM C295/ C295M.

2. 1. 1. 2. 3 Grout

Sand f or gr out must consi st of har d, t ough, dur abl e, uncoat ed par t i c l es.

I t may be composed of nat ur al sand, manuf act ur ed sand, or a combi nat i on of nat ur al and manuf act ur ed sand. The shape of t he par t i c l es must be gener al l y r ounded or cubi cal and must not cont ai n mor e t han 5 per cent of f l at or el ongat ed pi eces havi ng a maxi mum di mensi on i n excess of f i ve t i mes t he mi ni mum di mensi on. I f t he sand i s a combi nat i on of separ at el y pr ocessed si zes, c l assi f i cat i on, or a combi nat i on of nat ur al and manuf act ur ed sands, t he di f f er ent component s must be bat ched separ at el y, or , subj ect t o wr i t t en appr oval , bl ended pr i or t o del i ver y t o t he mi xi ng pl ant . The sand must be wel l - gr aded f r om f i ne t o coar se, and t he gr adat i on, as det er mi ned i n accor dance wi t h ASTM C136/ C136M and ASTM C117, must conf or m t o t he f ol l owi ng r equi r ement s:

SI EVE DESI GNATI ON CUMULATI VE PERCENTAGE BY WEI GHT

( U. S. STANDARD SQUARE MESH) PASSI NG RETAI NED

8 100 0

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16 95- 100 0- 5 30 60- 85 15- 40 50 20- 50 50- 80 100 10- 30 70- 90 200 0- 5 95- 100

I n addi t i on t o t he gr adi ng l i mi t s shown, al l sand used i n t he wor k must have a f i neness modul us wi t hi n t he r ange of 1. 50 t o 2. 00. The gr adi ng of t he sand as del i ver ed t o t he mi xes, dur i ng any 24 hour per i od of oper at i on, must be cont r ol l ed so t hat t he f i neness modul us of sampl es t aken wi l l not var y mor e t han 0. 10 f r om t he aver age f i neness modul us. The r esul t s of pr evi ous t est s and t he ser vi ce r ecor d may be used t o det er mi ne t he accept abi l i t y of t he sand. Sand must be st or ed i n a manner t o f aci l i t at e dr ai nage and avoi d t he i ncl usi on of any f or ei gn mat er i al s i n t he gr out .

2. 1. 1. 2. 4 Coar se Aggr egat e

Coar se aggr egat e may be used i n t he gr out mi x, pr ovi ded t hat t he r esul t i ng mi x i s pumpabl e and meet s t he s l ump f l ow cr i t er i a out l i ned i n t hi s Speci f i cat i on wi t hout segr egat i ng. I f coar se aggr egat e i s used, t he nomi nal maxi mum aggr egat e s i ze shal l not exceed 1/ 2” or one t hi r d of t he i nsi de di amet er of t he pi pe used f or pumpi ng, whi chever i s smal l er .

2. 1. 1. 3 Water

Wat er f or mi xi ng must be cl ean and f r ee f r om i nj ur i ous amount s of oi l , aci d, sal t , al kal i , or gani c mat t er or ot her del et er i ous subst ances. The Cont r act or must conduct appl i cabl e wat er t est i ng and cer t i f i cat i on t hat t he wat er i s sui t abl e f or use i n t he gr out . Wat er f or t he gr out must come f r om t he same sour ce used i n t he f i el d t est mi xes.

2. 1. 1. 4 Admixtures

An admi xt ur e i s any mat er i al ot her t han wat er , aggr egat e, and cement added t o t he gr out i mmedi at el y bef or e or dur i ng i t s mi xi ng t o al t er i t s chemi cal or physi cal pr oper t i es t o a desi r ed char act er i st i c dur i ng i t s f l ui d or pl ast i c st at e. Admi xt ur es must conf or m t o ASTM C494/ C494M at t he t i me of accept ance t est i ng sampl e submi t t al , and t he Cont r act or must f ur ni sh cer t i f i cat i on f r om t he manuf act ur er t hat t he mat er i al meet s al l t he r equi r ement s of t hese speci f i cat i ons. Al l admi xt ur es t o be used i n each bat ch of gr out must be separ at el y packaged and wei ghed pr i or t o use.

2. 1. 1. 5 Fl y Ash

ASTM C618, Type F, except t hat t he maxi mum cal c i um oxi de cont ent must be

8. 0 per cent , t he maxi mum avai l abl e al kal i s must be 1. 5 per cent , and t he maxi mum al l owabl e l oss on i gni t i on must be 6 per cent f or Type F. The sour ce, t ype and qual i t y of t he f l y ash r equi r es t he Cont r act i ng Of f i cer ' s appr oval bef or e i ncor por at i on i nt o t he gr out mi x. The maxi mum amount of f l y ash shoul d not exceed 30 per cent of t he cement by wei ght .

2. 1. 1. 6 Si l i ca Fume

Si l i ca f ume may be used i n t he gr out mi xt ur e t o i mpr ove r esi st ance t o washout . I f used, s i l i ca f ume shal l conf or m t o ASTM C1240.

SECTI ON 35 43 29 Page 10

2. 1. 1. 7 Fluidifier

Fl ui di f i er must be a compound possessi ng char act er i st i cs whi ch wi l l i ncr ease t he f l owabi l i t y of t he mi xt ur e, assi st i n di sper sal of t he cement gr ai ns, and neut r al i ze t he set t i ng shr i nkage of t he gr out . The qual i t y of t he mat er i al must meet t he r equi r ement s speci f i ed i n ASTM C937. Sampl i ng of f l ui di f i er must be done by an aut hor i zed r epr esent at i ve of t he Cont r act i ng Of f i cer . Tr i al mi xt ur es shoul d be t est ed pr i or t o usi ng t he mat er i al s i n f i el d wor k. Al l t est s wi l l be made by and at t he expense of t he Gover nment .

2. 1. 2 Fabric

The f abr i c used i n t he manuf act ur i ng of gr out bags must be composed of synt het i c yar ns f or med i nt o a woven f abr i c. Yar ns used i n t he manuf act ur e of t he f abr i c must be hi gh st r engt h mul t i f i l ament pol yest er . The f abr i c must be woven wi t h a mi ni mum of 50 per cent t ext ur ed yar ns ( by wei ght ) t o i mpr ove adhesi on t o gr out and t o i mpr ove f i l t r at i on. Par t i al l y- or i ent ed ( POY) , dr aw- t ext ur ed, and/ or st apl e yar ns must not be used i n t he manuf act ur e of t he f abr i c. Each l ayer of f abr i c must conf or m t o t he physi cal , mechani cal and hydr aul i c r equi r ement s r ef er enced her ei n. The f abr i c must be f r ee of def ect s or f l aws whi ch si gni f i cant l y af f ect t hei r physi cal , mechani cal , or hydr aul i c pr oper t i es. The f ol l owi ng Mi ni mum Aver age Rol l Val ues ( MARV) must be met .

Pr oper t y Requi r ement s - Gr out Bag Fabr i cs 1, 2

Pr oper t y Test Met hod Uni t s Val ues

Wi de Wi dt h Tensi l e St r engt h- Mach ASTM D4595 l bf . / i n. 650 Wi de Wi dt h Tensi l e St r engt h- Cr oss ASTM D4595 l bf . / i n. 600 El ongat i on at Br eak- Machi ne ASTM D4595 % 15 El ongat i on at Br eak- Cr oss ASTM D4595 % 10 Mass Per Uni t Ar ea ASTM D5262 oz. / sy 10 Thi ckness ASTM D5199 mi l s 25 Appar ent Openi ng Si ze ASTM D4751 US St d. Si eve 200

Per mi t t i v i t y or Fl ow Rat e ASTM D4491/ D4491M gal / mi n/ f t 2 1. 85

Not es:

1. Conf or mance of f i l t er f abr i cs t o speci f i cat i on pr oper t y r equi r ement s must be based on ASTM D4759.

2. To meet MARV, t he aver age of t est r esul t s f r om any sampl e r ol l i n a l ot must meet or exceed t he mi ni mum val ues. Lot s shal l be sampl ed accor di ng t o ASTM D4354.

2. 1. 2. 1 Gr out Bags

Gr out bags must consi st of t wo or mor e l ayer s of woven f abr i c sewn t oget her t o f or m a s i x s i ded bag wi t h a cr oss- sect i on shown i n t he dr awi ngs. The upper and l ower s i des of t he f or m must be j oi ned t oget her by spaced st r aps of uni f or m l engt h t o f or m a concr et e ar mor uni t wi t h an aver age t hi ckness of 4. 0 f eet and a nomi nal mass per uni t ar ea of 140 pounds per cubi c f oot . The st r aps must be at t ached t o cor ds i nt er woven i nt o t he upper and l ower s i des of t he ar mor uni t f or ms and must have a mi ni mum br eaki ng st r engt h of 1000 pound- f eet when t est ed i n accor dance with ASTM D2256/ D2256M. Af t er t he ar mor uni t f or m has been f i l l ed wi t h gr out t he st r aps must be on appr oxi mat el y 8. 0 i nch by 8. 0 i nch cent er spaci ng. Tthe The act ual spaci ng of st r aps shal l be det er mi ned by t he bag

SECTI ON 35 43 29 Page 11 manuf act ur er and appr oved by t he Cont r act i ng Of f i cer . The st r aps must connect t he upper and l ower s i des of t he ar mor uni t f or m t o f or m a compar at i vel y uni f or m sur f ace appear ance.

When f i l l ed wi t h gr out t he ar mor uni t f or m must f or m a concr et e ar mor uni t wi t h f i ni shed aver age uni t di mensi ons of 18. 0 f eet by 23. 0 f eet by 4. 0 f eet i n t hi ckness and a nomi nal uni t vol ume of 61. 3 cubi c yar ds, as shown on t he dr awi ngs. Wi der or cust om shaped gr out bags wi l l be needed near t he l ock wal l , abut ment pr ot ect i on wal l and apr on ar ea.

2. 1. 2. 2 Sel f - Seal i ng Fi l l i ng/ Vent i ng Por t s

Each i ndi v i dual gr out bag must be equi pped wi t h at l east t wo sel f - seal i ng f i l l i ng por t s; one vent i ng por t sui t abl e f or t he out f l ow of wat er dur i ng t he concr et e f i l l i ng and one f i l l i ng por t sui t abl e f or use wi t h an i nj ect i on pi pe at t he end of a pump hose f or gr out f i l l i ng. Each f i l l i ng por t must be const r uct ed wi t h t wo f l anges; one epoxi ed t o each si de of t he upper l ayer of f abr i c. The exposed f abr i c at t he cent er of t he por t must be cr oss s l i t t o al l ow t he i nser t i on of a concr et e f i l l i ng pi pe. Each f i l l i ng por t f l ange must be pol ypr opyl ene wi t h a 4. 0 i nch i nsi de di amet er and a 10. 0 i nch out si de di amet er and a mi ni mum t hi ckness of 0. 25 i nches.

The por t s must be i nst al l ed at pr edet er mi ned l ocat i ons; t hese l ocat i ons must cor r espond t o t he hi gher el evat i on ( upst r eam) end of t he gr out bag when i nst al l ed on t he pr oposed 3H: 1V sl ope. Addi t i onal por t s may be added t o t he bags t o f aci l i t at e bag pl acement and f i l l i ng. The l ocat i on of addi t i onal por t s i s subj ect t o appr oval of t he Cont r act i ng Of f i cer .

2. 1. 2. 3 Mi l l Wi dt hs

Mi l l wi dt hs of f abr i c must be a mi ni mum of 76 i nches. Each sel vage edge of t he t op and bot t om l ayer s of f abr i c must be r ei nf or ced f or a wi dt h of not l ess t han 1. 5 i nches by addi ng a mi ni mum of 10 war p yar ns t o each sel vage const r uct i on. Mi l l wi dt h r ol l s must be cut t o t he l engt h r equi r ed, and t he t wo l ayer s of f abr i c separ at el y j oi ned, bot t om l ayer t o bot t om l ayer and t op l ayer t o t op l ayer , by means of sewi ng t hr ead, t o f or m mul t i pl e mi l l wi dt h panel s.

2. 1. 2. 4 Seams

Al l seams sewn i n t he f act or y must not be l ess t han 400 pound- f eet per i nch when t est ed i n accor dance wi t h ASTM D4884/ D4884M. Al l sewn seams and zi pper at t achment s must be made usi ng a doubl e l i ne of U. S. Feder al St andar d Type 401 st i t ch. Al l st i t ches must be sewn si mul t aneousl y and be par al l el t o each ot her , spaced bet ween 0. 25 i nches t o 0. 75 i nches apar t .

Each r ow of st i t chi ng must consi st of 4 t o 7 st i t ches per i nch. Thr ead used f or seami ng must be pol yest er .

2. 1. 3 Shape Cor ds, Cabl es and Connect i ng Har dwar e

Shape cor ds must consi st of st r i ps of f abr i c meet i ng t he mat er i al r equi r ement s of par agr aph " Fabr i c" . The st r aps must be posi t i oned at t he l ocat i ons shown on t he dr awi ngs t o mai nt ai n t he t hi ckness of t he gr out bag at t he desi gned di st ance, wi t h a t ol er ance i n t hi ckness not t o exceed one and one- hal f i nches. The connect i on of t he st r aps t o t he f abr i c must be secur e and pr ovi de a st r engt h capabl e of sust ai ni ng t he pr essur e cr eat ed by t he gr out i n t he bag.

Cabl es f or connect i ng i ndi v i dual gr out bags must be 7 x 19 gal vani zed st eel cabl es l ocat ed as shown on t he dr awi ngs. The cabl es must meet t he

SECTI ON 35 43 29 Page 12 r equi r ement s of FS RR- W- 410. The t ensi l e st r engt h of t he cabl es must be at l east 12, 000 pounds. St eel gr ommet s must be pr ovi ded i n t he s i dewal l s of t he gr out bags t o al l ow t he cabl es t o connect adj acent bags. Any openi ngs ( st eel gr ommet s or f i l l i ng por t s) or seams i n t he f abr i c must be l ocat ed a mi ni mum of one ( 1) f oot f r om hypocycl oi d openi ngs on bot h t he s i de wal l and t he end wal l s of t he gr out bags.

Connect i ng har dwar e f or at t achi ng cabl es of adj acent bags must be gal vani zed swages, cabl e f i t t i ngs or ot her gal vani zed connect i ng devi ces t hat pr ovi de a mi ni mum of 80% of t he r at ed br eaki ng st r engt h of t he cabl e. Cabl e over l ap must be a mi ni mum of s i x ( 6) i nches.

2. 1. 4 Beddi ng Mat er i al

The beddi ng mat er i al beneat h t he gr out f i l l ed bags pl aced on 3H t o 1V si de sl ope must be a cohesi onl ess, har d, dur abl e, wel l - gr aded, f r ee dr ai ni ng angul ar mat er i al . Beddi ng mat er i al i s not r equi r ed under t he gr out bags pl aced over bedr ock. The beddi ng mat er i al st one may be a bl end of common aggr egat e s i zed t hat ar e i n accor dance wi t h ASTM D448, wi t h t he f ol l owi ng gr adat i on l i mi t s:

Si eve Desi gnat i on Per cent age Passi ng by Wei ght 3 i nch 100% 2 i nch Mi n 90%

1. 3 i nch Max 50%

0. 375 i nch Mi n 15% No. 4 < 10%

The qual i t y of t he mat er i al must be subj ect t o t he appr oval of t he Cont r act i ng Of f i cer , i ncl udi ng t he sour ce of t he mat er i al . The Cont r act or must pr ovi de document at i on f r om a USACE val i dat ed geot echni cal l abor at or y t hat t he mat er i al meet s t he subj ect r equi r ement s.

2. 1. 5 Geogr i d Rei nf or cement

The geogr i d soi l r ei nf or cement t o be used must meet t he r equi r ement s of Sect i on 31 05 19. 19 GEOGRI D REI NFORCEMENT.

2. 1. 6 Dowel s or Rebar

Dowel s, r ebar , or coupl er s used i n t he apr on t i e- i n el ement must meet t he r equi r ement s of Sect i on 03 20 00. 00 10 CONCRETE REI NFORCI NG. Rei nf or ci ng st eel coupl er s f or t he gr out bag t i e- i n shal l be met al of pr oven cor r osi on r esi st ance and compat i bl e wi t h t he r ebar . Coupl er shal l have f l anges f or at t achment t o t he gr out bags and shal l devel op at l east 125 per cent of t he mi ni mum speci f i ed y i el d st r engt h of t he r ebar .

2. 1. 7 Forms

For ms f or const r uct i ng t he cast - i n- pl ace apr on t i e- i n el ement at t he dam apr on ( i ncl udi ng t he l evel i ng pl at e) must meet t he r equi r ement s of Sect i on

03 11 13. 00 10 STRUCTURAL CAST- I N- PLACE CONCRETE FORMI NG.

2. 1. 8 PVC Pi pe

PVC pi pe must be manuf act ur ed f r om a Type I , Gr ade 1, pol yvi nyl chl or i de ( PVC) compound wi t h a cel l c l assi f i cat i on of R454 per ASTM D1784. The pi pe must be manuf act ur ed i n st r i ct compl i ance t o ASTM D1785.

SECTI ON 35 43 29 Page 13

PART 3 EXECUTI ON

3. 1 EQUIPMENT

3. 1. 1 Gr out i ng Equi pment

3. 1. 1. 1 Gr out Mi xer

The gr out mi xer must be a hi gh- speed, hi gh- shear , col l oi dal t ype gr out mixer capabl e of cont i nuous mechani cal mi xi ng t hat wi l l pr oduce uni f or m and t hor oughl y mi xed gr out whi ch i s f r ee of l umps and undi sper sed cement .

The mi xer must be equi pped wi t h a sui t abl e wat er and admi xt ur e measur i ng devi ces cal i br at ed t o r ead i n cubi c f eet t o t he near est t ent h and so desi gned t hat af t er each del i ver y t he hands can be conveni ent l y set back t o zer o. The wat er met er must have a cer t i f i cat e of cal i br at i on f r om an i ndependent l abor at or y. Pr i or t o each use, t he wat er met er must be checked f or accur acy and, i f necessar y, r ecal i br at ed. Vol umet r i c gr out mi xer s shal l not be used.

3. 1. 1. 2 Gr out Pump

The gr out pump must be of t he posi t i ve di spl acement t ype, and must be capabl e of pumpi ng at al l f l ow r at es bel ow 20 gal l ons per mi nut e ( gpm) a f l ow r at e of at l east 10 cubi c yar ds per hour , and must be capabl e of pumpi ng at t he pr essur e of at l east 50 psi at zer o f l ow r at e. The pumpi ng equi pment t o be used must be capabl e of pr ovi di ng t he necessar y head t o meet t he maxi mum di st ance and el evat i on bet ween t he gr out del i ver y t r uck and t he l ocat i on of gr out bags t o be f i l l ed, whi l e al so accommodat i ng t he physi cal f l ow char act er i st i cs of t he gr out and i t s addi t i ves. The pumpi ng equi pment must possess var i abl e st r oke and speed cont r ol s.

For neat cement gr out , t he pump must have a scr een wi t h 0. 125 i nch maxi mum cl ear ance t o s i eve t he gr out bef or e bei ng i nt r oduced i nt o t he pump.

Scr eens ar e not r equi r ed f or shear t ype mi xer s. A pump must al so be avai l abl e whi ch i s capabl e of pumpi ng bot h neat cement gr out mi xes and sanded gr out mi xes. The pumpi ng equi pment must have a pr essur e gage capabl e of measur i ng pr essur es of at l east 150 psi or t wi ce t he r equi r ed gr out pr essur e, whi chever i s gr eat er .

3. 1. 1. 3 Hol di ng Tank

Hol di ng t ank( s) or sump( s) must be of t he mechani cal l y agi t at ed t ype and pr ovi de a hi gh vol ume and cont i nuous i nj ect i on of gr out . The sump must be capabl e of hol di ng t he sol i ds of t he mi x i n suspensi on and have a capaci t y of at l east 12 cubi c f eet of gr out or t hr ee t i mes t he capaci t y of t he mi xi ng syst em. Vol ume of gr out used f r om t he agi t at or hol di ng t ank( s) or sump( s) must be measur ed by a ver t i cal gr aduat ed st i ck or mar ks at di f f er ent l evel s i n t he t ank( s) / sump( s) .

3. 1. 1. 4 Val ves, Gauges, Gr out Li nes, Header s and Accessor i es

Val ves, pr essur e gauges, gr out l i nes, header ar r angement s, and accessor i es must pr ovi de a cont i nuous suppl y of gr out and accur at e pr essur e cont r ol .

Gr out must be conveyed bet ween t he pump and t he hol e usi ng a s i ngl e- l i ne syst em consi st i ng of a pi pe or hose or combi nat i on of bot h ext endi ng f r om t he pump di schar ge t o t he header at t he hol e col l ar wi t h gr out i nj ect i on r at e cont r ol l ed by t he pump speed or c i r cul at i ng doubl e- l i ne syst em composed of a suppl y l i ne t o t he header at t he hol e col l ar and a r et ur n

SECTI ON 35 43 29 Page 14 l i ne f r om t he header t o t he gr out pump, sump, or hol di ng t ank. Gr out l i nes must consi st of ei t her bl ack st eel pi pe or r ei nf or ced r ubber or pl ast i c hose or a combi nat i on of bot h. The maxi mum i nsi de di amet er of al l gr out l i nes must be 2 i nch. The gr out i nj ect i on r at e f or t he s i ngl e- l i ne syst em must be cont r ol l ed by t he pump speed so t hat set t l ement of sol i ds wi t hi n t he l i nes wi l l not occur when pumpi ng at or above t he mi ni mum di schar ge capaci t y of t he pump. The pr essur e i n t he doubl e- l i ne syst em must be cont r ol l ed by one or mor e val ves on t he cont r ol l i ne. The di st ance bet ween t he hol e and t he pump or hol di ng t anks must be as shor t as possi bl e t o mi ni mi ze t he accumul at i on of sol i ds and possi bl e c l oggi ng.

Pr essur e gauges must be hi gh pr eci s i on, gr aduat ed wi t h di v i s i ons not gr eat er t han 2 psi on t he di al f ace, cal i br at ed and cer t i f i ed cor r ect pr i or t o use. Gauges must be t est ed f or accur acy as di r ect ed by t he Cont r act i ng Of f i cer dur i ng t he wor k by cr oss compar i son wi t h a st andar d set of oi l - f i l l ed gauges. The movi ng par t s of al l gauges must be pr ot ect ed f r om dust , gr i t , and di r ect cont act wi t h gr out .

3. 1. 2 Gr out Bag Ji g

The j i g f or set t i ng gr out bags must be const r uct ed by t he Cont r act or and be capabl e of handl i ng t he f or ces expect ed t o be encount er ed dur i ng t ypi cal oper at i ons. The j i g must be of a s i ze t hat can accommodat e t he bag si ze shown on t he dr awi ngs and must cont ai n f r ami ng t o al l ow connect i on and subsequent movement of t he j i g usi ng a cr ane l ocat ed on a f l oat i ng pl ant . The j i g may be out f i t t ed wi t h gl obal posi t i oni ng syst em har dwar e f or use i n est abl i shi ng l ocat i on of bags. Pl acement of t he j i g must be car ef ul l y per f or med by t he Cont r act or as t o pr event damage t o t he geogr i d r ei nf or cement and any damaged geogr i d r ei nf or cement must be r emoved and r epl aced at t he expense of t he Cont r act or .

3. 1. 3 Cr anes and Fl oat i ng Pl ant

The cr anes and f l oat i ng pl ant t o be used i n gr out bag i nst al l at i on must meet t he r equi r ement s of Sect i on 01 35 00. 00 08 SPECI AL PROCEDURES.

3. 2 MI X DESI GNS

3. 2. 1 Fi el d Mi x- Desi gn Test i ng

Conduct f i el d mi x- desi gn t est i ng f or al l pr oposed gr out mi xes. Conduct t hese t est s onsi t e, under condi t i ons s i mi l ar t o act ual gr out i ng condi t i ons. For each gr out mi x, t he f ol l owi ng char act er i st i cs must be determined:

a. Speci f i c Gr avi t y

b. Vi scosi t y

c. Sl ump and Sl ump Fl ow

d. Per cent Bl eedi ng

e. Pr essur e Fi l t r at i on Coef f i c i ent f . I ni t i al Set Ti me

g. Fi nal Set Ti me

h. Compr essi ve St r engt h ( at 3- . 7- , 14- , and 28- day i nt er val s) i . Sl ump af t er 30, 60, 90, and 120 mi nut es

Make compr essi ve st r engt h t est speci mens, a mi ni mum of once per shi f t per mi x, not i ng t hat t he speci mens ar e r epr esent at i ve of t he amount of cement i t i ous mi x pl aced dur i ng t he shi f t . Addi t i onal speci mens may be made at t he opt i on of t he Cont r act or t o mi ni mi ze t he amount of cement i t i ous mi x r epr esent ed by each set of compr essi ve st r engt h speci mens.

SECTI ON 35 43 29 Page 15

3. 2. 2 Ot her Mi x Desi gns

Ot her mi x desi gns may be devel oped af t er t he st ar t of t he gr out i ng pr ogr am, i f f i el d mi x- desi gn t est r esul t s or ot her s i t e condi t i ons i ndi cat e i t t o be necessar y. Test al l such gr out mi xes t o det er mi ne t he char act er i st i cs l i s t ed above.

3. 3 CONSTRUCTI ON AND I NSTALLATI ON REQUI REMENTS

3. 3. 1 Const r uct i on Tol er ances

Compl y wi t h t he f ol l owi ng t ol er ances i n const r uct i ng t he gr out bag scour protection:

Feat ur e, Di mensi on, Desi gn Al l owabl e Var i at i on or Pr oper t y Val ue Mi ni mum Maxi mum

Subgr ade el evat i on Per Dr awi ngs - 6 i nch 0 i nch Beddi ng Thi ckness 18 i nches - 4 i nch NA Gr out Bag el evat i on Per Dr awi ngs - 6 i nch 0 i nch Gr out Bag t hi ckness 48 i nches 46 i nch NA Gr out Bag t o Gr out 0 i nches 0 i nch 1 i nch Bag Separ at i on Adj acent Gr out Bags 0 i nches +3 i nch - 3 i nch ( Tr ansver se t o f l ow) Adj acent Gr out Bags 0 i nches 0 i nch +3 i nch ( Par al l el t o f l ow) ( Upst r eam above Downst r eam) Gr out Bag t o Exi st i ng 0 i nches 0 i nch +4 i nch Feat ur e Separ at i on Hypocycl oi d Openi ngs 0. 5 SF - 10% +20% Gr out Bag Uni t Wt . 140 pcf 135 pcf NA Gr out Bag Vol ume Per Dr awi ngs - 5% NA ( St andar d Gr out Bag)

The edge of t he downst r eam gr out bag shal l not pr oj ect ver t i cal l y above t he t op sur f ace of t he upst r eam gr out bag. The upst r eam gr out bag may pr oj ect a maxi mum of 3 i nches above t he t op sur f ace of t he downst r eam bag. Obt ai n measur ement s on adj acent gr out bags al ong t he per i met er i n sever al l ocat i ons al ong each si de of t he gr out bag. Conduct al l measur ement s, soundi ngs, di v i ng i nspect i ons, and t est s of gr out bag uni t wei ght and vol ume necessar y t o show compl i ance wi t h t he r equi r ed tolerances.

Pr oceed wi t h t he dr edgi ng, beddi ng mat er i al , geogr i d and gr out bag pl acement i n a t i mel y manner , t o avoi d changes i n t he pr oposed gr ades const r uct ed or movement of t he mat er i al s by r i ver f l ow or ot her di spl acement . Take t he necessar y st eps t o mi ni mi ze t hese changes, so t hat gr out bag const r uct i on can meet t he necessar y hydr aul i c r equi r ement s and const r uct i on t ol er ances speci f i ed.

3. 3. 2 Si t e Pr epar at i on

Const r uct ar eas on whi ch gr out bags ar e t o be pl aced t o t he l i nes, gr ades, cont our s, and di mensi ons shown on t he dr awi ngs and t o t he t ol er ances l i s t ed i n par agr aph " Const r uct i on Tol er ances" . Remove al l obst r uct i ons, such as r oot s, debr i s and pr oj ect i ng st ones, except i f r emoval of t hese obst r uct i ons endanger s t he st abi l i t y of an adj acent st r uct ur e. Not i f y t he

SECTI ON 35 43 29 Page 16

Cont r act i ng Of f i cer i f a s i t uat i on i s encount er ed wher e t hi s may occur .

The Cont r act i ng Of f i cer may r educe t he pr oposed beddi ng t hi ckness r equi r ement i f he det er mi nes t hat t he obst r uct i on wi l l not i mpact t he i nst al l at i on of t he gr out bags. I f r emoval of such obst r uct i ons r esul t s i n ar eas t hat ar e bel ow desi gn gr ades, br i ng t he ar eas t o gr ade by pl aci ng compact ed l ayer s of sel ect mat er i al meet i ng t he r equi r ement s of par agr aph Beddi ng Mat er i al . The t hi ckness of l ayer s and t he amount of compact i on must be as speci f i ed by t he Cont r act i ng Of f i cer . Wher e r equi r ed by t he speci f i cat i ons, i dent i f y sof t and ot her wi se unsui t abl e subgr ade soi l s, excavat e, and r epl ace wi t h sel ect mat er i al s i n accor dance wi t h t he specifications.

I mmedi at el y pr i or t o pl aci ng t he gr out bag, t he pr epar ed ar ea must be i nspect ed by t he Cont r act i ng Of f i cer , and no gr out bags must be pl aced t her eon unt i l t he ar ea has been appr oved.

3. 3. 3 Geogr i d and Empt y Gr out Bag Pl acement

Upon appr oval of t he gr aded sur f ace by t he Cont r act i ng Of f i cer , i nst al l t he geogr i d. Per f or m i nst al l at i on i n accor dance wi t h Sect i on 31 05 19. 19 GEOGRI D REI NFORCEMENT, par agr aph I NSTALLATI ON. I f necessar y, secur e t he geogr i d t o t he beddi ng mat er i al , t o avoi d f l ot at i on or movement dur i ng empt y gr out bag pl acement . I nspect t he geogr i d t o ver i f y t hat adj acent pi eces abut . The met hod t o secur e t he geogr i d must be r ecommended by t he Cont r act or and appr oved by t he Cont r act i ng Of f i cer

Fol l owi ng pl acement of t he geogr i d and accept ance by t he Cont r act i ng Of f i cer , pl ace gr out bags di r ect l y on t he pr epar ed subgr ade t o t he l i mi t s shown on t he dr awi ngs. I nst al l gr out bags i n st ages as shown on dr awi ngs, wi t h t he f i l l i ng por t s l ocat ed at t he hi gher el evat i on ( upst r eam) end of t he gr out bag. Pr ogr ess t he gr out bag i nst al l at i on f r om l ef t t o r i ght ( l ooki ng downst r eam) and f r om downst r eam end of t he gr out bag scour pr ot ect i on t owar ds t he exi st i ng dam apr on. The pr ocedur e f or set t i ng t he bags must be as document ed i n t he Gr out Bag I nst al l at i on Pl an, as di scussed i n par agr aph SUBMI TTALS of t hi s speci f i cat i on sect i on. Posi t i on t he j i g f or set t i ng gr out bags over t he pr oposed l ocat i on usi ng a cr ane sui t abl e f or t hi s appl i cat i on.

I mmedi at el y pr i or t o f i l l i ng wi t h gr out , t he assembl ed gr out bags shal l be i nspect ed by t he Cont r act i ng Of f i cer , and no gr out shal l be pumped t her ei n unt i l t he pl acement and l ocat i on have been appr oved. At no t i me shal l t he gr out bags be exposed t o ul t r avi ol et l i ght ( i ncl udi ng di r ect sunl i ght ) f or a per i od exceedi ng f i ve cal endar days.

3. 3. 4 Gr out Pl acement

Fol l owi ng t he pl acement of t he f abr i c f or m, i nser t t he f i l l i ng pi pe at t he end of t he gr out pump hose t hr ough one of t he sel f - seal i ng f i l l i ng val ves/ por t s at t he hi gher el evat i on ( upst r eam) end of t he bag. Pump gr out bet ween t he t op and bot t om l ayer s of f abr i c, f i l l i ng t he f or ms t o t he r ecommended t hi ckness and conf i gur at i on. Ref er ence and f ol l ow t he Gr out Bag I nst al l at i on Pl an f or t hi s component of wor k. Pumpi ng must pr oceed f r om t he l ow el evat i on poi nt i n t he gr out bag t o t he hi gh el evat i on poi nt and at a pumpi ng r at e t hat mai nt ai ns t he l ocat i on and or i ent at i on of t he bag, t o t he ext ent possi bl e. Sever al Fi l l i ng val ves may be used t o accompl i sh t hi s pur pose. Pump gr out i n such a way t hat excessi ve pr essur e on t he f abr i c f or ms i s avoi ded.

Rest r i ct f oot t r af f i c on t he f i l l ed concr et e gr out bag uni t s t o an

SECTI ON 35 43 29 Page 17 absol ut e mi ni mum f or t he f i r st hour af t er f i l l i ng, except t o i nst al l dowel s or r ebar , as speci f i ed her ei n.

Abut t i ng or l at er al concr et e gr out bags may be i nst al l ed i mmedi at el y af t er pl acement of t he pr ecedi ng gr out bag( s) . Gr out bags shal l bear f ul l y agai nst adj acent gr out bags. I f a concr et e gr out bag i s t o bear on a pr evi ousl y i nst al l ed gr out bag ( i . e. , i nst al l ed at a hi gher el evat i on up t he sl ope, al l ot a mi ni mum of f our hour s of cur e t i me f or t he l ower gr out bag bef or e begi nni ng i nst al l at i on of a hi gher el evat i on, ver t i cal l y adj acent gr out bag( s) .

Gr out bags must r equi r e connect i on of t he cabl es. Connect t he cabl es usi ng a swage, or an equi val ent met hod sel ect ed by t he Cont r act or and appr oved by t he Cont r act i ng Of f i cer . Per f or m t he connect i on af t er gr out bags have been f i l l ed wi t h wat er and pr i or t o any gr out pl aced i nt o and adj acent gr out bag. Af t er secur i ng t he cabl es t aut , compr ess t he connect i on bet ween t he adj acent gr out bags.

No sooner t han 24 hour but no l at er t han one hour af t er gr out has been pl aced i n a gr out bag, i nser t dowel s or r ebar at t he r ebar coupl er l ocat i ons, as shown on t he dr awi ngs. . Tempor ar i l y cap t he exposed end of dowel s and r ebar t o r educe r i sk of i mpal ement and t o r educe shar p edge exposur e unt i l t he gr out f or t he t i e- i n el ement i s r eady f or pl acement .

Not mor e t han t wo cal endar days af t er gr out i ng i s compl et ed f or a gr out , per f or m measur ement s t o ver i f y t hat t he gr out bag scour pr ot ect i on i nst al l at i on meet s t he t ol er ances out l i ned i n par agr aph " Const r uct i on Tol er ances" . These measur ement s must be per f or med f or each gr out bag installed.

3. 3. 5 Apr on Ti e- I n El ement

Const r uct t he apr on t i e- i n el ement no sooner t han 24 hour s af t er t he gr out bag base has been i nst al l ed. I nst al l f or mwor k f or t he cast - i n- pl ace apr on t i e- i n el ement t o meet t he l i nes and gr ades of t he el ement shown on t he dr awi ngs and i n accor dance wi t h par agr aph " I nst al l at i on" of Sect i on 03 11 13. 00 10 STRUCTURAL CAST- I N- PLACE CONCRETE FORMI NG. Commence f or mwor k no sooner t han one hour af t er t he gr out bag base has been compl et ed. Pr i or t o i nst al l at i on of any f or ms, i nst al l a l evel i ng pl at e on t he gr out bag base, t o whi ch t he f or m can be secur ed and l evel ed.

I nst al l t he l evel i ng pl at e no l at er t han one hour af t er t he f i l l i ng of t he gr out bag base, so as t o per mi t hor i zont al and ver t i cal adj ust ment or " l evel i ng" of t he pl at e whi l e t he gr out i s st i l l f l ui d i n t he bag.

Per f or m any ot her pr epar at or y wor k associ at ed wi t h t he i nst al l at i on of f or ms f or const r uct i ng t he t i e- i n…