02220 excavating backfilling and compacting.doc

8/16/2019 02220 Excavating Backfilling and Compacting.doc

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SECTION 02220

EXCAVATING, BACKFILLING, AND COMPACTING

PART 1 - GENERAL

1.1 DESCRIPTION

A. Scope of Work: Excavate, backfill, a! co"pact a# re$%ire! for t&e co#tr%ctio of t&e

%tilit' #'#te" co#i#ti( of pipi( a! app%rteace#, a! #tr%ct%ral co#tr%ctio a##&o) o t&e Dra)i(# a! #pecifie! &erei. T&e Cotractor #&all f%ri#& all labor,

"aterial#, e$%ip"et, a! ici!etal# ece##ar' to perfor" all excavatio, backfill,

co"pactio, (ra!i(, a! #lope protectio to co"plete t&e Work. T&e Cotractor #&all be

re#po#ible for &avi( !eter"ie! to &i# #ati#factio, prior to t&e #%b"i##io of &i# bi!,all %!er (ro%! %tilitie# locatio# a! app%rteace# #&o) o t&e co#tr%ctio

Dra)i(#.

*. Defiitio#:

1. +axi"%" De#it': +axi"%" )ei(&t i po%!# per c%bic foot of a #pecific "ateriala# !eter"ie! b' AASTO T-1/ 0AST+ D12.

3. Opti"%" +oi#t%re: Perceta(e of )ater i a #pecific "aterial at "axi"%" !e#it'.

4. Rock Excavatio: Excavatio of a' &ar! at%ral #%b#tace )&ic& re$%ire# t&e %#e of

explo#ive# a!5or #pecial i"pact tool# #%c& a# 6ack &a""er#, #le!(e#, c&i#el#, or #i"ilar !evice# #pecificall' !e#i(e! for %#e i c%tti( or breaki( rock, b%t excl%#ive

of trec& excavati( "ac&ier'.

7. S%itable: S%itable "aterial# for fill# #&all be o-co&e#ive, o-pla#tic (ra%lar local#a! a! #&all be free fro" ve(etatio, or(aic "aterial, "arl, #ilt, or "%ck. T&e

Cotractor #&all f%ri#& all a!!itioal fill "aterial re$%ire!.

. 8#%itable: 8#%itable "aterial# are &i(&l' or(aic #oil 0peat or "%ck2 cla##ifie! a#

A- i accor!ace )it& AASTO De#i(atio + 17.

C. Pla 9or Eart&)ork: T&e Cotractor #&all be re#po#ible for &avi( !eter"ie! to &i##ati#factio, prior to t&e #%b"i##io of &i# bi!, t&e cofor"atio of t&e (ro%!, t&e

c&aracter a! $%alit' of t&e #%b#trata, t&e t'pe# a! $%atitie# of "aterial# to be

eco%tere!, t&e at%re of t&e (ro%!)ater co!itio#, t&e pro#ec%tio of t&e Work, t&e(eeral a! local co!itio#, a! all ot&er "atter# )&ic& ca i a' )a' affect t&e Work

%!er t&i# Cotract. Prior to co""eci( t&e excavatio, t&e Cotractor #&all #%b"it a

pla of &i# propo#e! operatio#, icl%!i( "aiteace of traffic, to t&e Co%t' for revie). T&e Cotractor #&all co#i!er, a! &i# pla for excavatio #&all reflect, t&e

e$%ip"et a! "et&o!# to be e"plo'e! i t&e excavatio. T&e price# e#tabli#&e! i t&e

Propo#al for t&e Work to be !oe )ill reflect all co#t# pertaii( to t&e Work.

/333/ - 1 of 1/OC8 +a#ter CIP Tec&ical Specificatio# rev: A%(%#t, 3/13

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1.3 8A;IT< ASS8RANCE

A. Te#ti( laborator' e"plo'e! b' t&e Co%t' )ill "ake #%c& te#t# a# are !ee"e! a!vi#able.

T&e Cotractor #&all #c&e!%le &i# )ork to per"it a rea#oable ti"e for te#ti( before placi( #%ccee!i( lift# a! #&all keep t&e laborator' ifor"e! of &i# pro(re##. Co#t# for

iitial te#ti( #&all be pai! b' t&e Co%t'= &o)ever, te#t# )&ic& &ave to be repeate!

beca%#e of t&e fail%re of t&e te#te! "aterial to "eet #pecificatio #&all be pai! for b' t&eCotractor a! t&e co#t of re-te#ti( #&all be !e!%cte! fro" pa'"et# !%e t&e Cotractor.

*. Sta!ar!#1. AASTO: A"erica A##ociatio of State i(&)a' a! Tra#portatio Official#

3. ANSI: A"erica Natioal Sta!ar!# I#tit%te

4. ASCE: A"erica Societ' of Civil E(ieer#7. AST+: A"erica Societ' for Te#ti( a! +aterial#

. AWWA: A"erica Water Work# A##ociatio

>. OSA 3? C9R S%bpart P @ Excavatio# a! Trec&e# a2 1?3>.>/, 1?3>.>1,1?3>.>3

. OSA 3? C9R S%bpart B - a2 1?1/.17> for Cofie! Space Etr'

1.4 BO* CONDITIONS

A. Exi#ti( 8tilitie#1. T&e Cotractor i# re#po#ible for #%b#%rface verificatio of exi#ti( %tilitie# prior to

co#tr%ctio. ;ocate exi#ti( %tilitie# i t&e area of )ork i accor!ace )it&

S%#&ie State Oe Call re(%latio#, C&apter >, 8!er(ro%! 9acilit' Da"a(ePrevetio a! Safet' Act, 9S.

3. S&o%l! %c&arte! or icorrectl' c&arte! pipi( or ot&er %tilit' be eco%tere! !%ri(

excavatio, otif' t&e Co%t'. eep all facilitie# i operatio a! repair !a"a(e!

%tilitie# to t&e #ati#factio of t&e Co%t'.4. Da"a(e a! repair co#t# to #%c& pipi( or %tilitie# are t&e Cotractor# re#po#ibilit'.

7. If %tilitie# are to re"ai i place, t&e Cotractor #&all provi!e a!e$%ate "ea# of protectio.

*. Te#t bori(# a! t&e #%b-#%rface exploratio !ata if previo%#l' !oe o t&e #ite )ill be"a!e available %po re$%e#t a! are for t&e Cotractor# ifor"atio ol'.

1.7 PROTECTION

A. S&eeti( a! *raci(

1. Re$%ire"et# of t&e Trec& Safet' Act #&all be a!&ere! to at all ti"e#.


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3. 9%ri#&, p%t i place, a! "aitai #%c& #&eeti( a! braci( a# "a' be re$%ire! to

#%pport t&e #i!e# of excavatio#, to prevet a' "ove"et )&ic& co%l! i a' )a'!i"ii#& t&e )i!t& of t&e excavatio belo) t&at ece##ar' for proper co#tr%ctio, to

protect a!6acet #tr%ct%re# a! po)er pole# fro" %!er"ii(, a! to protect )orker#

fro" &aFar!o%# co!itio# or ot&er !a"a(e. S%c& #%pport #&all co#i#t of brace!#teel #&eet pili(, brace! )oo! la((i( a! #ol!ier bea"# or ot&er acceptable

"et&o!#. If t&e Co%t' i# of t&e opiio t&at at a' poit #%fficiet or proper

#%pport# &ave ot bee provi!e!, t&e Co%t' "a' or!er a!!itioal #%pport# p%t i at

t&e expe#e of t&e Cotractor, a! co"pliace )it& #%c& or!er #&all ot relieve or relea#e t&e Cotractor fro" &i# re#po#ibilit' for t&e #%fficiec' of #%c& #%pport#.

Care #&all be take to prevet voi!# o%t#i!e of t&e #&eeti(, b%t if voi!# are for"e!,

t&e' #&all be i""e!iatel' fille! a! co"pacte!. W&ere #oil caot be properl'co"pacte! to fill a voi!, lea cocrete #&all be %#e! a# backfill at o a!!itioal

expe#e to t&e Co%t'.

4. T&e Cotractor #&all co#tr%ct t&e #&eeti( o%t#i!e t&e eat lie# of t&e fo%!atio%le## i!icate! ot&er)i#e for t&e "et&o! of operatio. S&eeti( #&all be pl%"b a!

#ec%rel' brace! a! tie! i po#itio. S&eeti( a! braci( #&all be a!e$%ate to

)itta! all pre##%re to )&ic& t&e #tr%ct%re or trec& )ill be #%b6ecte!. A'"ove"et or b%l(i( )&ic& "a' occ%r #&all be correcte! b' t&e Cotractor at t&eir

o) expe#e #o a# to provi!e t&e ece##ar' clearace# a! !i"e#io#.7. W&ere #&eeti( a! braci( i# re$%ire! to #%pport t&e #i!e# of excavatio# for

#tr%ct%re#, t&e Cotractor #&all e(a(e a Profe##ioal Geotec&ical E(ieer,re(i#tere! i t&e State of 9lori!a, to !e#i( t&e #&eeti( a! braci(. T&e #&eeti(

a! braci( i#talle! #&all be i cofor"it' )it& t&e !e#i(, a! t&e Profe##ioal

E(ieer #&all provi!e certificatio of t&i#.. T&e i#tallatio of #&eeti(, partic%larl' b' !rivi( or vibrati(, "a' ca%#e !i#tre## to

exi#ti( #tr%ct%re#. T&e Cotractor #&all eval%ate t&e potetial for #%c& !i#tre## a!,

if ece##ar', take all preca%tio# to prevet !i#tre## of exi#ti( #tr%ct%re# beca%#e of #&eeti( i#tallatio.

>. T&e Cotractor #&all leave i place to be e"be!!e! i t&e backfill all #&eeti( a!

braci( ot #&o) o t&e Dra)i(# b%t )&ic& t&e Co%t' "a' !irect &i" i )riti(to leave i place at a' ti"e !%ri( t&e pro(re## of t&e Work for t&e p%rpo#e of

preveti( !a"a(e to #tr%ct%re#, %tilitie#, or propert', )&et&er p%blic or private. T&e

Co%t' "a' !irect t&at ti"ber %#e! for #&eeti( a! braci( be c%t off at a'

#pecifie! elevatio.. All #&eeti( a! braci( ot left i place #&all be caref%ll' re"ove! i #%c& "aer

a# ot to e!a(er t&e co#tr%ctio or ot&er #tr%ct%re#, %tilitie#, or propert'. All voi!#

left or ca%#e! b' )it&!ra)al of #&eeti( #&all be i""e!iatel' refille! )it& #a! b'ra""i( )it& tool# e#peciall' a!apte! to t&at p%rpo#e, or ot&er)i#e a# "a' be

!irecte! b' t&e Co%t'.

. T&e ri(&t of t&e Co%t' to or!er #&eeti( a! braci( left i place #&all ot be

co#tr%e! a# creati( a' obli(atio o t&e Co%t'H# part to i##%e #%c& or!er#, a!t&eir fail%re to exerci#e t&i# ri(&t #&all ot relieve t&e Cotractor fro" liabilit' for

!a"a(e# to per#o# or propert' occ%rri( fro" or %po t&e Work occa#ioe! b'

e(li(ece or ot&er)i#e, (ro)i( o%t of a fail%re o t&e part of t&e Cotractor toleave i place #%fficiet #&eeti( a! braci( to prevet a' cavi( or "ovi( of t&e

(ro%!.


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?. No )oo! #&eeti( i# to be )it&!ra) if !rive belo) "i!-!ia"eter of a' pipe, a!

%!er o circ%"#tace# #&all a' )oo! #&eeti( be c%t off at a level lo)er t&a 1-footabove t&e top of a' pipe.

*. P%"pi( a! Draia(e:

1. T&e Cotractor #&all at all ti"e# !%ri( co#tr%ctio provi!e a! "aitai proper

e$%ip"et a! facilitie# to re"ove all )ater eteri( excavatio#, a! #&all keep #%c&excavatio# !r' #o a# to obtai a #ati#factor' %!i#t%rbe! #%b(ra!e fo%!atio

co!itio %til t&e fill#, #tr%ct%re#, or pipe# to be b%ilt t&ereo &ave bee co"plete! to#%c& extet t&at t&e' )ill ot be floate! or ot&er)i#e !a"a(e! b' allo)i( t&e )ater

level to ret%r to t&e at%ral level a# #tip%late! i Sectio /317/ De)ateri(. T&eCotractor #&all e(a(e a Profe##ioal Geotec&ical E(ieer re(i#tere! i t&e State

of 9lori!a to !e#i( t&e !e)ateri( #'#te"#. T&e Cotractor #&all #%b"it to t&e

Co%t' for a pla for !e)ateri( #'#te"# prior to co""eci( )ork. T&e !e)ateri(#'#te" i#talle! #&all be i cofor"it' )it& t&e overall co#tr%ctio pla, a! t&e

Profe##ioal E(ieer #&all provi!e certificatio of t&i#. T&e Profe##ioal E(ieer

#&all be re$%ire! to "oitor t&e perfor"ace of t&e !e)ateri( #'#te"# !%ri( t&e pro(re## of t&e Work a! re$%ire #%c& "o!ificatio# a# "a' be re$%ire! to a##%re t&at

t&e #'#te"# are perfor"i( #ati#factoril'.

3. De)ateri( #&all at all ti"e# be co!%cte! i #%c& a "aer a# to pre#erve t&e%!i#t%rbe! beari( capacit' of t&e #%b(ra!e #oil# at t&e propo#e! botto" of excavatio a! to pre#erve t&e ite(rit' of a!6acet #tr%ct%re#. De)ateri( b' trec&

p%"pi( )ill ot be per"itte! if "i(ratio of fie (raie! at%ral "aterial fro"

botto", #i!e)all#, or be!!i( "aterial )ill occ%r.4. Water eteri( t&e excavatio fro" #%rface r%off #&all be collecte! i #&allo)

!itc&e# aro%! t&e peri"eter of t&e excavatio, !raie! to #%"p#, a! p%"pe! fro"

t&e excavatio to "aitai a botto" free fro" #ta!i( )ater.7. T&e Cotractor #&all take all a!!itioal preca%tio# to prevet %plift of a' #tr%ct%re

!%ri( co#tr%ctio.

. Per"i##io to %#e a' #tor" #e)er# or !rai# for )ater !i#po#al p%rpo#e# #&all be

obtaie! fro" t&e a%t&orit' &avi( 6%ri#!ictio. A' re$%ire"et# a! co#t# for #%c&%#e #&all be t&e re#po#ibilit' of t&e Cotractor. o)ever, t&e Cotractor #&all ot

ca%#e floo!i( b' overloa!i( or blocki( %p t&e flo) i t&e !raia(e facilitie#, a!

&e #&all leave t&e facilitie# %re#tricte! a! a# clea a# ori(iall' fo%!. A' !a"a(eto facilitie# #&all be repaire! or re#tore! a# !irecte! b' t&e Co%t' or t&e a%t&orit'

&avi( 6%ri#!ictio, at o co#t to t&e Co%t'.

>. T&e Cotractor #&all prevet flotatio b' "aitaii( a po#itive a! coti%o%#operatio of t&e !e)ateri( #'#te". T&e Cotractor #&all be f%ll' re#po#ible a!

liable for all !a"a(e# )&ic& "a' re#%lt fro" fail%re of t&i# #'#te".

. Re"oval of !e)ateri( e$%ip"et #&all be acco"pli#&e! after co"pactio5!e#it'te#ti( &a# bee co"plete! a! t&e #'#te" i# o lo(er re$%ire!. T&e Cotractor #&all

re"ove t&e "aterial a! e$%ip"et co#tit%ti( t&e #'#te".. T&e Cotractor #&all take all ece##ar' preca%tio# to precl%!e t&e acci!etal

!i#c&ar(e of f%el, oil, or ot&er cota"iate# i or!er to prevet a!ver#e effect# o(ro%!)ater $%alit'.


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1. TESTING AND INSPECTION SERICE

A. T&e Co%t' )ill provi!e a (eotec&ical te#ti( a! i#pectio #ervice. T&e #ervice#

icl%!e te#ti( #oil "aterial# a! $%alit' cotrol te#ti( !%ri( filli( a! backfilli(operatio#. Sa"ple# of #oil "aterial# #&all be f%ri#&e! to t&e te#ti( #ervice b' t&e

Cotractor. T&e Co%t' #&all pa' co#t# of iitial (eotec&ical te#ti(. T&e Cotractor

#&all pa' for a' #%b#e$%et te#ti( re$%ire! !%e to fail%re a! laborator' #ta!-b'c&ar(e# ic%rre!.

*. T&e Cotractor #&all provi!e "ot&l' !e#it' te#ti( report# to t&e Co%t' !%ri( backfilli( activitie#. De#it' te#ti( report# ot #%b"itte! i a ti"el' "aer #&all

re#%lt i re6ectio of t&e pipe i#talle! a! re6ectio of t&e !e#it' te#ti( report# %til

#%c& ti"e t&at !e#it' re-te#ti( i# coor!iate! a! repeate! at t&e Cotractor# expe#e.

C. De#it' te#ti( #c&e!%le! #%b#e$%et to backfilli( activitie# #&all be coor!iate! )it&,

a! )ite##e! b' t&e Co%t'. 9ail%re b' t&e Cotractor to coor!iate or &ave t&e Co%t' pre#et #&all re#%lt i re6ectio of t&e #%b"itte! !e#it' te#ti( report# a! re-te#ti( at

t&e CotractorH# expe#e.

D. De)ateri( #'#te"# #&all ot be re"ove! %til co"pactio5!e#it' te#ti( &a# bee

co"plete!.

PART 2 - PRODUCTS

3.1 +ATERIA;S

A. Geeral:

1. All fill "aterial #&all be #%b6ect to t&e revie) a! acceptace of t&e Co%t'.3. All fill "aterial #&all be free of or(aic "aterial, tra#&, or ot&er ob6ectioable

"aterial. T&e Cotractor #&all re"ove exce## or %#%itable "aterial fro" t&e 6ob #ite.

*. Co""o 9ill +aterial: Co""o fill #&all co#i#t of "ieral #oil, #%b#tatiall' free of

cla', or(aic "aterial, "%ck, loa", )oo!, tra#&, a! ot&er ob6ectioable "aterial )&ic&

"a' be co"pre##ible or )&ic& caot be co"pacte! properl'. Co""o fill #&all otcotai #toe# lar(er t&a 4-153-ic&e# i a' !i"e#io i t&e top 13-ic&e# or >-ic&e#

i a' !i"e#io i t&e balace of fill area. Co""o fill #&all ot cotai a#p&alt,

broke cocrete, "a#or', r%bble or ot&er #i"ilar "aterial#. It #&all &ave p&'#ical propertie# t&at allo) it to be ea#il' #prea! a! co"pacte! !%ri( filli(. A!!itioal

co""o fill #&all be o "ore t&a 13 J b' )ei(&t fier t&a t&e No. 3// "e#& #ieve,

%le## fier "aterial i# approve! for %#e i a #pecific locatio b' t&e Co%t'. Select

Co""o 9ill #&all be a# #pecifie! a# above fro" co""o fill, except t&at t&e "aterial

#&all cotai o #toe# lar(er t&a 153-ic&e# i lar(e#t !i"e#io, a! #&all be o "oret&a J b' )ei(&t fier t&a t&e No. 3// "e#& #ieve.

/333/ - of 1/OC8 +a#ter CIP Tec&ical Specificatio# rev: A%(%#t, 3/13

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C. Str%ct%ral 9ill: Str%ct%ral fill #&all be rea#oabl' )ell (ra!e! #a! to (ravell' #a!

&avi( t&e follo)i( (ra!atio:

8S Sieve SiFe Percet Pa##i( *' Wei(&t

No. 1 1// No. 7 - 1//

No. 7/ 1 - /

No. 1// / - 4/

No. 3// / - 13

D. Cla## 1 Soil#K: +a%fact%re! a(%lar, (ra%lar "aterial, 157 to 1-153-ic&e# 0> to 7 ""2#iFe, icl%!i( "aterial# &avi( #i(ificace #%c& a# cr%#&e! #toe or rock, broke coral,

cr%#&e! #la(, ci!er#, or cr%#&e! #&ell#. Sieve aal'#i# for cr%#&e! #toe i# (ive belo)

#eparatel'.

Cr%#&e! Stoe: Cr%#&e! #toe #&all co#i#t of clea "ieral a((re(ate free fro" cla',loa" or or(aic "atter, cofor"i( to AST+ C44 #toe #iFe No. ? a! )it& particle

#iFe li"it# a# follo)#:

8.S. Sieve SiFe J Pa##i( *' Wei(&tL 1//

45 1//

No. 7 3/ @ 3 No. @ 4/

No. 1> / - 1/

No. / / - 3

E. Cla## II Soil#KK:

1. GW: Well (ra!e! (ravel# a! (ravel-#a! "ixt%re#, little or o fie#. 9ift' percet or "ore retaie! o No. 7 #ieve. +ore t&a ? J retaie! o No. 3// #ieve. Clea.

3. GP: Poorl' (ra!e! (ravel# a! (ravel-#a! "ixt%re#, little or o fie#. 9ift' percet

or "ore retaie! o No. 7 #ieve. +ore t&a ? J retaie! o No. 3// #ieve. Clea.4. SW: Well (ra!e! #a!# a! (ravell' #a!#, little or o fie#. +ore t&a pa##e# No. 7

#ieve. +ore t&a ? J retaie! o No. 3// #ieve. Clea.

7. SP: Poorl' (ra!e! #a!# a! (ravell' #a!#, little or o fie#. +ore t&a / J pa##e# No. 7 #ieve. +ore t&a ? J retaie! o No. 3// #ieve. Clea.

KSoil# !efie! a# Cla## I "aterial# are ot !efie! i AST+ D37.

KKI accor!ace )it& AST+ D37, le## t&a J pa## No. 3// #ieve.

9. Coar#e Sa!: Sa! #&all co#i#t of clea "ieral a((re(ate )it& particle #iFe li"it# a#follo)#:

8.S. Sieve SiFe Percet Pa##i( *' Wei(&t45 1//

No. 1/ @ 1//

No. 7/ 3/ @ 7/

No. 3// / - 13

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G. Ot&er +aterial: All ot&er "aterial, ot #pecificall' !e#cribe!, b%t re$%ire! for proper

co"pletio of t&e Work #&all be #electe! b' t&e Cotractor a! acceptable b' t&e Co%t'.

PART 3 - EXECUTION

4.1 PREPARATION

A. Cleari(:1. T&e co#tr%ctio area# #&all be cleare! of all ob#tr%ctio# a! ve(etatio icl%!i(lar(e root# a! %!er(ro)t& )it&i 1/-feet of t&e lie# of t&e excavatio.

3. Strip a! #tockpile top#oil o t&e #ite at t&e locatio to be !eter"ie! b' t&e Co%t'.

4.3 EMCAATION

A. Geeral: Excavatio# for roa!)a'#, #tr%ct%re#, a! %tilitie# "%#t be caref%ll' exec%te! i

or!er to avoi! iterr%ptio of %tilit' #ervice.

*. Excavati( for Roa!)a'#5Str%ct%re#58tilitie#:

1. Excavatio #&all be "a!e to #%c& !i"e#io# a# )ill (ive #%itable roo" for b%il!i(

t&e fo%!atio# a! t&e #tr%ct%re#, for braci( a! #%pporti(, for p%"pi( a!!raii(, a! for all ot&er )ork re$%ire!.

a. Excavatio for preca#t or prefabricate! #tr%ct%re# #&all be carrie! to a elevatio

3-feet lo)er t&a t&e propo#e! o%t#i!e botto" of t&e #tr%ct%re to provi!e #pace for t&e #elect backfill "aterial. Prior to placi( t&e #elect backfill, t&e excavatio

#&all be "ea#%re! b' t&e Co%t' to verif' t&at t&e excavatio &a# bee carrie! to

t&e proper !ept& a! i# rea#oabl' %ifor" over t&e area to be occ%pie! b' t&e

#tr%ct%re. b. Excavatio for #tr%ct%re# co#tr%cte! or ca#t i place i !e)atere! excavatio#

#&all be carrie! !o) to t&e botto" of t&e #tr%ct%re )&ere !e)ateri( "et&o!# are

#%c& t&at a !r' excavatio botto" i# expo#e! a! t&e at%rall' occ%rri( "aterialat t&i# elevatio levele! a! left rea!' to receive co#tr%ctio. +aterial !i#t%rbe!

belo) t&e fo%!i( elevatio i !e)atere! excavatio# #&all be replace! )it&

Cla## * cocrete.c. 9ooti(#: Ca#t-i-place cocrete footi( #i!e# #&all be for"e! i""e!iatel' after

excavatio.

3. I""e!iatel' !oc%"et t&e locatio, elevatio, #iFe, "aterial t'pe a! f%ctio of alle) #%b#%rface i#tallatio#, a! %tilitie# eco%tere! !%ri( t&e co%r#e of

co#tr%ctio.

4. Excavatio e$%ip"et operator# a! ot&er cocere! partie# #&all be fa"iliar )it&

#%b#%rface ob#tr%ctio# a# #&o) o t&e Dra)i(# a! #&o%l! aticipate t&eeco%ter of %ko) ob#tr%ctio# !%ri( t&e co%r#e of t&e Work.

7. Eco%ter# )it& #%b#%rface ob#tr%ctio# #&all be &a! excavate!.

. Excavatio a! !e)ateri( #&all be acco"pli#&e! b' "et&o!# t&at pre#erve t&e%!i#t%rbe! #tate of #%b(ra!e #oil#. S%b(ra!e #oil# )&ic& beco"e #oft, loo#e, $%ick

or ot&er)i#e %#ati#factor' for #%pport of #tr%ct%re# a# a re#%lt of ia!e$%ate

!e)ateri( or ot&er co#tr%ctio "et&o!# #&all be re"ove! a! replace! b' cr%#&e!


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#toe a# re$%ire! b' t&e Co%t' at t&e Cotractor# expe#e.

>. T&e botto" of excavatio# #&all be re!ere! fir" a! !r' before placi( a' pipi(or #tr%ct%re.

. All pave"et# #&all be c%t )it& #a)# or approve! po)er tool# prior to re"oval.

. Excavate! "aterial #&all be #tockpile! i #%c& a "aer a# to prevet %i#aceco!itio#. S%rface !raia(e #&all ot be &i!ere!. Excavate! "aterial ot #%itable

for backfill #&all be re"ove! fro" t&e #ite a! !i#po#e! of b' t&e Cotractor.

4.4 DRAINAGE

A. T&e Cotractor #&all at all ti"e# !%ri( co#tr%ctio provi!e a! "aitai proper e$%ip"et a! facilitie# to re"ove pro"ptl' a! !i#po#e of properl' all )ater eteri(

excavatio#, a! keep #%c& excavatio# !r' #o a# to obtai a #ati#factor' %!i#t%rbe!

#%b(ra!e fo%!atio co!itio. T&e !e)ateri( "et&o! %#e! #&all prevet !i#t%rbace of eart& belo) (ra!e.

*. All )ater p%"pe! or !raie! fro" t&e Work #&all be !i#po#e! of i a #%itable "aer

)it&o%t %!%e iterferece )it& ot&er )ork, )it&o%t !a"a(e to #%rro%!i( propert', a!

i accor!ace )it& pertiet r%le# a! re(%latio#.

C. No co#tr%ctio, icl%!i( pipe la'i(, #&all be allo)e! i )ater. No )ater #&all be

allo)e! to cotact "a#or' or cocrete )it&i 37-&o%r# after bei( place!. T&eCotractor #&all co#tatl' (%ar! a(ai#t !a"a(e !%e to )ater a! take f%ll re#po#ibilit'

for all !a"a(e re#%lti( fro" &i# fail%re to !o #o.

D. T&e Cotractor )ill be re$%ire! at &i# expe#e to excavate belo) (ra!e a! refill )it&

cr%#&e! #toe 0(ra!atio or ?2 or ot&er acceptable fill "aterial if t&e Co%t'

!eter"ie# t&at a!e$%ate !e)ateri( &a# ot bee provi!e!.

4.7 8NDERC8T

A. If t&e botto" of a' excavatio i# belo) t&at #&o) o t&e Dra)i(# or #pecifie!

beca%#e of Cotractor error, coveiece, or %#%itable #%b(ra!e !%e t&e Cotractor#excavatio "et&o!#, &e #&all refill to or"al (ra!e )it& fill at &i# o) co#t. 9ill "aterial

a! co"pactio "et&o! #&all be approve! b' t&e Co%t'.

4. 9I;; AND CO+PACTION

A. Co"pact a! backfill excavatio# a! co#tr%ct e"bak"et accor!i( to t&e follo)i(#c&e!%le. 0+o!ifie! Proctor #ta!ar! #&all be AST+ D-12:

STR8CT8RES AND ROADWOR

Area +aterial Co"pactio

*eeat&Str%ct%re#

Str%ct%ral9ill

13-ic& lift#, co"pacte! to ?J "axi"%" !e#it' a#!eter"ie! b' AASTO T-1/.

9ill S&o%l! ot be place! over a' i-place #oil# %til t&o#e


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!epo#it# &ave bee co"pacte! to ?J +o!ifie! Proctor.

Aro%!Str%ct%re#

Str%ct%ral9ill

13-ic& lift#, ?J of "axi"%" !e#it' a# !eter"ie! b'AASTO T-1/.

R%bber Tire or vibrator' plate co"pactor# #&all be %#e!

*eeat&Pave!

S%rface#

Co""o9ill

13-ic& lift#, ?J b' "axi"%" !e#it' a# !eter"ie! b'AASTO T-1/ or a# re$%ire! b' t&e 9DOT Sta!ar!#.

Ope Area# Co""o

9ill

13-ic& lift#, ?J b' "axi"%" !e#it' a# !eter"ie! b'

AASTO T-1/.

*. Pipe #&all be lai! i ope trec&e# %le## ot&er)i#e i!icate! o t&e Dra)i(# or el#e)&ere i t&e Cotract Doc%"et#.

C. Excavatio# #&all be backfille! to t&e ori(ial (ra!e or a# i!icate! o t&e Dra)i(#.

Deviatio fro" t&i# (ra!e beca%#e of #ettli( #&all be correcte!. T&e backfill operatio

#&all be perfor"e! to co"pl' )it& all r%le# a! re(%latio# a! i #%c& a "aer t&at it!oe# ot create a %i#ace or #afet' &aFar!.

D. E"bak"et# #&all be co#tr%cte! tr%e to lie#, (ra!e#, a! cro## #ectio# #&o) o t&e

pla# or or!ere! b' t&e Co%t'. E"bak"et# #&all be place! i #%cce##ive la'er# of ot"ore t&a -ic&e# i t&icke##, loo#e "ea#%re, for t&e f%ll )i!t& of t&e e"bak"et. A#

far a# practicable, traffic over t&e Work !%ri( t&e co#tr%ctio p&a#e #&all be !i#trib%te!#o a# to cover t&e "axi"%" #%rface area of eac& la'er.

E. If t&e Cotractor re$%e#t# approval to backfill "aterial %tiliFi( lift# a!5or "et&o!# ot&er t&a t&o#e #pecifie! &erei, #%c& re$%e#t #&all be i )riti( to t&e Co%t'. Acceptace

)ill be co#i!ere! ol' after t&e Cotractor &a# perfor"e! te#t#, at t&e Cotractor#

expe#e, to i!etif' t&e "aterial %#e! a! !e#it' ac&ieve! t&ro%(&o%t t&e backfill area%tiliFi( t&e "et&o! of backfill re$%e#te!. T&e Co%t'# acceptace #&all be i )riti(.

9. Oe co"pactio te#t locatio #&all be re$%ire! for eac& 4// liear feet of pipe a! for

ever' 1// #$%are feet of backfill aro%! #tr%ct%re# a# a "ii"%". T&e Co%t' "a'!eter"ie t&at "ore co"pactio te#t# are re$%ire! to certif' t&e i#tallatio !epe!i( o

fiel! co!itio#. T&e locatio# of t&e co"pactio te#t# )it&i t&e trec& #&all be icofor"ace )it& t&e follo)i( #c&e!%le:

1. At lea#t oe te#t at t&e #pri( lie of t&e pipe.

3. At lea#t oe te#t for eac& 13-ic& la'er of backfill )it&i t&e pipe be!!i( Foe for pipe# 37-ic&e# a! lar(er.

4. Oe te#t at a elevatio of 1-foot above t&e top of pipe.

7. Oe te#t for eac& 3-feet of backfill place! fro" 1-foot above t&e top of t&e pipe tofii#&e! (ra!e elevatio.

. De#it' te#ti( i# re$%ire! for #aitar' #e)er "a&ole#. Te#t# #&all be #ta((ere!

aro%! t&e "a&ole )it&i 4-feet of t&e #tr%ct%reH# o%t#i!e !ia"eter.a. 9ir#t te#t #&all be 1-foot above t&e #tr%ct%re ba#e.

b. Seco! te#t #&all be 3-feet above t&e fir#t te#t a! #%b#e$%et te#t# ever' 3-feet %p

t&e fii#&e! (ra!e.

>. T&e Cotractor #&all provi!e a!!itioal co"pactio a! te#ti( prior to co""eci(f%rt&er co#tr%ctio if t&e Co%t'H# te#ti( report# a! i#pectio i!icate t&at t&e fill

/333/ - ? of 1/OC8 +a#ter CIP Tec&ical Specificatio# rev: A%(%#t, 3/13

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&a# bee place! belo) #pecifie! !e#it'.

. T&e Cotractor #&all coor!iate te#ti( )it& t&e Co%t' approve! te#ti( laborator'a! #&all provi!e "ot&l' te#t re#%lt# to t&e Co%t' i a ti"el' "aer !%ri(

co#tr%ctio activitie#. De#it' te#ti( #c&e!%le! #%b#e$%et to backfilli( activitie#

#&all be coor!iate! )it& t&e Co%t' a! )ite##e! b' t&e Co%t' repre#etative.9ail%re b' t&e Cotractor to coor!iate or &ave t&e Co%t' repre#etative pre#et

#&all re#%lt i re6ectio of t&e #%b"itte! !e#it' te#ti( report# a! re-te#ti( at t&e

Cotractor# expe#e. De#it' te#ti( report# ot #%b"itte! i a ti"el' "aer #&all

re#%lt i re6ectio of t&e pipe i#talle! a! re6ectio of t&e !e#it' te#ti( report# %til#%c& ti"e t&at !e#it' re-te#ti( i# coor!iate! a! repeate! at t&e Cotractor#

expe#e a# !ee"e! ece##ar' b' t&e Co%t'H# repre#etative.

. De)ateri( #'#te"# #&all ot be re"ove! %til co"pactio5!e#it' te#ti( &a# beeco"plete!.

END O9 SECTION

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02220 excavating backfilling and compacting.doc

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