Post on 15-Mar-2020
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Sliplining and Other Culvert Repair OptionsKen Moulds, Subsurface, Inc.
October 5, 2016
A partnership with MDT, NDDOT, SDDOT, WYDOT and the Mountain‐Plains Consortium Universities TOPICS
• Slip Lining
• RCP Joint Repair
• CIPP (Cured In Place Pipe)
• UV Cure vs. Steam, Hot Water
• Soil Stabilization / Void Filling
• High Density Polyethylene (HDPE)• Polyvinyl Chloride (PVC)• Screw or Snap connections between pipe sections, depending on manufacturer
• Corrosion and Chemical resistant• Easy Installation• Smooth interior usually yields lower Manning’s number than host pipe
• High Flow characteristics• Cost Effective 3 4
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• What is the most common problem with RCP?– Broken joints– Separated joints
• What have we always done?– Dig it up, reset it or replace it.
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• A Separated joint is a RCP structure that has pulled apart as a result of freeze thaw cycles, vibration, piping, weakened bedding, poor installation, and decomposing filter cloths.
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• New technologies have created more options at less cost using a three step process.– Seal the joint from the inside with a combination of oakum rope and a highly adhesive, flexible polyurethane resin.
– Then seal the outside of the joint from the inside of the pipe with another flexible, adhesive, long lasting polyurethane resin.
– Replace lost soils and fill voids with yet another polyurethane product that is light weight, load bearing, highly expansive.
– All of which have a life expectancy of over 100 years.• This process can be done on structures 36” and above.
• What about box culverts that have sheared?18
• Recognize that you have options other than open cutting.
• You are not the first. Trenchless No‐Dig technology in surface transportation has come a long way.
• Time has shown us that most drainage structures that have been fully treated have a renewed life expectancy.
• Avoid Detours.19
• The spec must be understood by the engineer, the inspector, and the contractor.
• Each step must be performed in order.• Polyurethane resins have unique characteristics and are designed to function accordingly.
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Polyurethane ResinsIf cost does matter, then the temperature of the grout or resin matters!Controlling the temperature is important from storage to the point of injection.
Heated storageHeated drumsHeated hoses
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• Winter is a good time to work in wetlands and hard to get at sites.
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CIPP is a trenchless rehabilitation method used to repair existing pipelines. CIPP is a jointless, seamless, pipe‐within‐a‐pipe. It has the capability to rehabilitate pipes ranging in diameter from very small to very large (4”‐110”).• Each CIPP liner is specifically designed for each individual host pipe and location.
• Starts out as raw felt or fiberglass depending on cure type.
• Made to the thickness and diameter required by ASTM standards.
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• Sent to a wet‐out facility where it is impregnated with the resins needed for curing.
• The liner is either refrigerated if steam cured, or crated if UV cured to prevent premature curing.
• Shipped to site in appropriate trailer/reefer.• Installed and cured on site.• Does not bond to host pipe.• Designed to be a load bearing pipe if the host pipe completely degrades.
• Life expectancy of over 50 years. 40
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Questions to be answered in deciding on a solution:
• What is the “host?” RCP or CMP?• Is the current pipe properly sized for the drainage area?• How will this decision affect the hydraulics of the culvert?• What is the depth to the invert?• What is the length and grade?• What kind of surface is above?• What is the traffic count?• How will the public be affected by the replace vs.
rehabilitate decision?• How much will a detour cost?• How much right of way is there on each side?• Does cost matter?
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• Good option when hydraulics are important in the decision.
• In a RCP host you can maintain 100% of the existing flow rate, and in most cases gain a few points.
• Good for small diameter culverts.• Farming and Ranching community like it because of flow characteristics.
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• Liner must be kept refrigerated to prevent premature curing.
• Shelf life is approximately 30 days if wet‐out liner has been kept at the proper temperature.
• Insert liner into pipe and pressurize to obtain snug fit with host pipe.
• Cured by blowing steam into liner43 44
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Desig
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tice
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uits
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ace
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allat
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ass
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astic
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erm
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1.Scope*
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ispra
ctice
cove
rsthe
proce
dures
fort
herec
onstr
uc-
tion
ofpip
eline
sand
cond
uits(
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ares
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xible
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onstr
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2.ReferencedDocuments
2.1AS
TMSta
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valua
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Plasti
csto
Chem
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forGl
assF
iberS
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38Te
stM
ethod
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ensil
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perti
esof
Plasti
csD7
90Te
stM
ethod
sfor
Flexu
ralPr
opert
iesof
Unrei
nfor
ced
and
Reinf
orced
Plasti
csan
dEl
ectri
calI
nsula
ting
Mate
ri-als
D160
0Term
inolog
yfor
Abbr
eviat
edTe
rmsR
elatin
gtoP
las-
tics
D303
9/D30
39M
Test
Meth
odfor
Tens
ilePr
opert
iesof
Poly-
merM
atrix
Comp
osite
Mate
rials
D356
7Prac
ticef
orDe
termi
ningD
imen
sions
of“F
iberg
lass”
(Glas
s-Fibe
r-Rein
force
dTh
ermos
etting
Resin
)Pipe
and
Fittin
gsD5
813S
pecifi
catio
nfo
rCu
red-In
-Plac
eTh
ermos
ettin
gRe
sinSe
werP
iping
Syste
msF4
12Te
rmino
logy
Relat
ingto
Plasti
cPipi
ngSy
stems
F121
6Prac
ticef
orRe
habil
itatio
nof
Exist
ingPip
eline
sand
Cond
uits
bythe
Inve
rsion
and
Curin
gof
aRe
sin-
Impr
egna
tedTu
beF1
417P
ractic
efo
rIns
tallat
ionAc
cepta
nce
ofPla
stic
Non-
pres
sure
Sewe
rLine
sUsin
gLo
w-Pr
essu
reAi
r2.2
AWWA
Stand
ard:
Man
ualo
nCl
eanin
gan
dLi
ning
Wate
rMain
s,M
283
2.3NA
SSCO
Stand
ard:
Reco
mmen
ded
Spec
ificati
ons
forSe
werC
ollec
tion
Syste
mRe
habil
itatio
n4
3.Terminology
3.1Ge
nera
l:3.1
.1De
finiti
onsa
rein
acco
rdanc
ewith
Term
inolog
yF41
2.Ab
brev
iation
sare
inac
cord
ance
with
Abbr
eviat
ions
D160
0,un
lesso
therw
iseind
icated
.3.2
Defin
ition
sofT
erms
Spec
ificto
This
Stand
ard:
3.2.1
calib
ratio
nho
se—
anim
perm
eable
bladd
erins
talled
inside
thefab
rictub
e,an
dinfl
atedw
ithair
orste
am,o
rboth
topr
esst
hetub
efirm
lyag
ainst
thewa
llof
theex
isting
pipeu
ntil
theres
inis
cured
with
airan
dste
amor
ultrav
iolet
light.
The
calib
ration
hose
shall
berem
oved
when
theins
tallat
ionis
finish
ed.
1Th
ispr
actic
eis
unde
rthe
jurisd
iction
ofAS
TMCo
mmitte
eF1
7on
Plas
ticPi
ping
Syste
msan
dis
thedir
ect
respo
nsibi
lityof
Subc
ommi
ttee
F17.6
7on
Tren
chles
sPlas
ticPi
pelin
eTe
chno
logy.
Curre
nted
ition
appro
ved
Sept.
1,20
11.P
ublis
hed
Septe
mber
2011
.Orig
inally
appr
oved
in20
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astp
reviou
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prov
edin
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9.DO
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Forr
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ASTM
stand
ards,
visit
theAS
TMwe
bsite
,www
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.org,
orco
ntact
ASTM
Custo
merS
ervice
atse
rvice
@as
tm.or
g.Fo
rAnn
ualB
ooko
fAST
MSta
ndar
dsvo
lumei
nfor
matio
n,ref
erto
thesta
ndard
’sDo
cume
ntSu
mmary
page
onthe
ASTM
webs
ite.
3Av
ailab
lefro
mAm
erica
nWate
rWor
ksAs
socia
tion
(AW
WA)
,666
6W.Q
uincy
Ave.,
Denv
er,CO
8023
5,htt
p://w
ww.aw
wa.or
g.4
Avail
able
from
Natio
nalA
ssocia
tiono
fSew
erSe
rvice
Comp
anies
,423
W.K
ingSt
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Suite
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burg
,PA
1720
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*ASummaryofChangessectionappearsattheendofthisstandard
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TMIn
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STM
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55
• Liner must be kept out of the light, natural or artificial, to prevent premature curing.
• Can be stored at room temperature for up to 12 months.
• Wall thickness can be standardized.• Cured by pulling a “light train” with special UV light bulbs through pressurized liner.
• Temperature can be monitored and controlled throughout entire curing process.
• Extra material on the ends cut off with diamond tipped blade.
56
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• Host pipe needs to be cleaned, CCTV’d, and glide foil installed.
57
• Liner is then pulled through the host pipe.
58
• Liner is then pulled through the host pipe.
59
• Carbon footprint is approx. 90% less compared to steam cured.
60
16
61 62
• Liner inflated and UV Light Train inserted.
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17
65 66
Kenny@subsurface‐inc.com119 4th St. S
P.O. Box 37, Moorhead, MN 56561Office: 218‐227‐5963Cell: 605‐838‐8384
Ken Moulds
67
Transportation Learning Network
Contact InformationProgram Director
Tim Horner, P.E.Office: (701) 328-9859
Cell: (701) 391-9787timothy.horner@ndsu.edu
Technical Training SpecialistChris Padilla
Office: (701) 328-9867Cell: (701) 202-5730
chris.padilla@ndsu.edu
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