Designation D] Final Backfill - SK75 Chamber Installation...
4
SK75 Chamber Installation Guideline • Upon arrival to the project site, visually inspect the chambers to ensure accurate quantities. Any damage that may have occurred during transport should also be noted at this time. • For efficient shipping and to allow ease in handling and storage, the chambers are stacked neatly upon themselves and secured to a pallet. Unloading is best accomplished via forklift. • Chambers should be stored in an area that is flat and free of debris. To avoid the potential for damage, this storage area should be isolated well away from the traveling paths used for construction vehicle traffic. • Using the project plans and the appropriate details, excavate the chamber system bed in a manner to sufficiently accommodate the chambers and manifolds. To ensure an adequate fit, and to allow for a stone border, an additional 12” of excavation is required between the trench sidewalls and the chamber system. • If standing water is present, dewatering measures should be utilized. • If a soft, unstable foundation is encountered, it should be over excavated and replaced with a suitable material as determined by the project engineer. • Upon the prepared foundation, place a 4oz. nonwoven fabric on the bed bottom and up and along the sidewalls. Maintain a 24” overlap of fabric at all seams. • Using the project plans and appropriate details, provide a level base of ¾”-2” clean crushed angular stone over the entire trench bed bottom. Foundation stone depth as indicated on the project plans (6” minimum). See Figure 1. Using a vibratory roller, compact the stone base to achieve a flat level surface. • If specified on the project plans, the perimeter underdrain piping may be laid at this point. Foundation and Bedding Preparation Handling and Storage 2 1 Prior to installation of the chamber system, adequate attention to the following guidelines is required. In addition, the chamber supplier, chamber installer (site contractor) and the design engineer may meet for a pre-construction meeting to discuss any questions relating to the installation process, and the guidelines herein. Figure 1 CHAMBER WIDTH + 24" 3/4" - 2" CLEAN CRUSHED ANGULAR STONE 4oz. NONWOVEN GEOTEXTILE WITH 24" SEAM OVERLAY 6" EXCAVATE CHAMBER SYSTEM BED
Transcript of Designation D] Final Backfill - SK75 Chamber Installation...
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SK75 Chamber Installation Guideline
•Uponarrivaltotheprojectsite,visuallyinspectthechamberstoensureaccuratequantities.Anydamagethatmayhaveoccurredduringtransportshouldalsobenotedatthistime.
•Forefficientshippingandtoalloweaseinhandlingandstorage,thechambersarestackedneatlyuponthemselvesandsecuredtoapallet.Unloadingisbestaccomplishedviaforklift.
•Chambersshouldbestoredinanareathatisflatandfreeofdebris.Toavoidthepotentialfordamage,thisstorageareashouldbeisolatedwellawayfromthetravelingpathsusedforconstructionvehicletraffic.
•Usingtheprojectplansandtheappropriatedetails,excavatethechambersystembedinamannertosufficientlyaccommodatethechambersandmanifolds.Toensureanadequatefit,andtoallowforastoneborder,anadditional12”ofexcavationisrequiredbetweenthetrenchsidewallsandthechambersystem.
• Ifstandingwaterispresent,dewateringmeasuresshouldbeutilized.
• Ifasoft,unstablefoundationisencountered,itshouldbeoverexcavatedandreplacedwithasuitablematerialasdeterminedbytheprojectengineer.
•Uponthepreparedfoundation,placea4oz.nonwovenfabriconthebedbottomandupandalongthesidewalls.Maintaina24”overlapoffabricatallseams.
•Usingtheprojectplansandappropriatedetails,providealevelbaseof¾”-2”cleancrushedangularstoneovertheentiretrenchbedbottom.Foundationstonedepthasindicatedontheprojectplans(6”minimum).See Figure 1.Usingavibratoryroller,compactthestonebasetoachieveaflatlevelsurface.
• Ifspecifiedontheprojectplans,theperimeterunderdrainpipingmaybelaidatthispoint.
FoundationandBeddingPreparation
HandlingandStorage
2
1
Priortoinstallationofthechambersystem,adequateattentiontothefollowingguidelinesisrequired.Inaddition,thechambersupplier,chamberinstaller(sitecontractor)andthedesignengineermaymeetforapre-constructionmeetingtodiscussanyquestionsrelatingtotheinstallationprocess,andtheguidelinesherein.
Fig
ure
1
CHAMBER WIDTH + 24"
3/4" - 2" CLEAN CRUSHED ANGULAR STONE 4oz. NONWOVEN GEOTEXTILE
WITH 24" SEAM OVERLAY
6"
EXCAVATE CHAMBERSYSTEM BED
ConstructionLoading6
Fill Material Location
[D] Final Backfill -FillmaterialforLayerDstartsatthetopoftheClayertothebottomofthepavementortothefinishedgradeofanunpavedsurface.Thepavementsubbasemaybepartofthefinalbackfill.
[C] Initial Backfill -MaterialforlayerCstartsatthetopoftheembed-mentzone(layerB)andcontinuesto18”abovethetopofthechamber.Thepavementsubbasemaybepartoftheinitialbackfilllayer
[B] Embedment Stone -Embedmentstonewillsurroundthechambersandextendsfromthetopofthebeddingstone(layerA)tothebottomofthefabriclayer.
[A] Bedding Stone -BeddingStoneextendsfromthesubgradetothefootofthechambers.
Material Description
Anybackfillwhichprovidesadequatesubgradefortheprojectpertheengineer’splans.Plansshallindicatesubgraderequirements.
Well graded granular material, <35% fines.
3/4” to 2” clean crushed angular stone.
3/4” to 2” clean crushed angular stone.
AASHTO M43Designation
N/A
AASHTO M45A-1, A-2, A-3OrM433, 357,4,467,5,56,57, 6,67,68, 7, 78,8,89, 9,10
3,357,4,467,5,56,57
3,357,4,467,5, 56,57
Compaction Requirements
Subgradewillbeplacedandcompactedtotherequirementsasshownonthesiteplans.
Compactionwillnotbeginuntilaminimumof12”ofmaterialisplacedoverthechambers.Additionallayersshallbecompactedin6”Iiftstoaminimumof95%standardproctordensityforwellgradedmaterial.Rollergrossvehiclesarenottoexceed12,000lbs.anddynamicforcenottoexceed20,000lbs.
No compaction required
Placed in 6” lifts and compacted with a vibratory roller.
Table
1
Material Location
[D] Final Fill Material
[C] Initial Fill
[B] Embedment Zone
Fill Depth above chambers
in.36”Compacted
24” Compacted
24” Dumped
18”
12”
6”
Table
2
Max Axle Loadfor Trucks
lbs.32,000
32,000
32,000
32,000
16,000
8,000
Max Wheel Loadfor Loaders
lbs.16,000
16,000
16,000
16,000
Not Allowed
Not Allowed
TrackWidth
in.12”18”24”30”36”
12”18”24”30”36”
12”18”24”30”36”
12”18”24”30”36”
12”18”24”30”36”
12”18”24”30”36”
Max GroundPressure
psf34202350185015101310
24801770143012101070
22451625132511351010
2010148012201060950
154011901010910840
1070900800760720
Max Drum WeightDynamic Force
lbs.38,000
20,000
20,000Grossweightofrollernottoexceed12,000lbs.
20,000Grossweightofrollernottoexceed12,000lbs.
20,000Grossweightofrollernottoexceed12,000lbs.
NotAllowed
Max allowable roller loads
Max Allowable Wheels Loads
Max Allowable Track Loads
Refer to Table 2formaximumallowableconstructionvehicleloads.
SK75 Chamber InstallationGuideline
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SK75 Chamber InstallationGuideline
•Usingtheprojectplansandappropriatedetails,fullyassemblethemanifoldsystem.
•Toalleviatethepotentialforscourattheinletlocations,laya15’widestripofwovengeotextile,alongtheentirelengthofthemanifoldmainline,adequatelycarpetingthebeddingbeneaththeinletlocations.See Figure 2&3.
•Positionthefirstchamberandendcapofeachrowwiththeinletpipes.Atthedesignatedlocations,coreanopeningintheendcapandinserttheinletpipe.Theinletpipesshouldpenetrate12”intotheendcap.Repeatthisprocessforeachrow.
• Maintaininga6”minimumclearspacebetweeneachrowisrequired.Theassemblyofeachrowisachievedbyovertoppingthelastriboftheinitialchamberwiththefirstribofthesucceedingchamber.Overlaplocationsarelabeledoneachchamber.Rowassemblyshouldnotexceedthereachofthebackfillplacementequipment.Thefinalchamberofeachrowshallalsobeequippedwithanendcap.
•Endcapsareplacedwiththeendcapoverlappingthetopofthereducedsizejoiningcorrugation.Theendcapshouldbeheldinplacebyscrewsduringbackfilloperations.
ManifoldAssemblyandChamberPlacement3
•Eachchambercrownisequippedwithonecircularcutoutpointtoaccommodatetheverticalinspectionportriser.Usingtheprojectplans,identifywhichchambersshouldbefittedwithinspectionports.Usingareciprocatingsaw,cutoutthe4”diameteropeningattheappropriatelocation.InsertaUni-Teeorequalintotheopening.
•Utilizing4”PVCSch.40pipeandfittings,buildtheinspectionportasshowninFigure 4.
InspectionPortPlacement4
Fig
ure
4
Fig
ure
2
SCOUR PROTECTION GEOTEXTILE
15'-0" MIN. IN
LET
MAN
IFOL
D
SCOUR PROTECTION - WOVEN GEOTEXTILE
ASSEMBLY DIRECTION
Fig
ure
3
15'-0" MIN. WOVEN GEOTEXTILE2'-0"
MIN.
END CAPINLET MANIFOLD
INSPECTION PORT
4” ø PVC or Dual Wall HDPE
4" ø SCHEDULE 40SCREW IN CAP
CONCRETE RING REQUIREDFOR TRAFFIC LOADING
TRAFFIC RATED BOX
FRATCO TAP TEE OR
EQUIVALENT
18"MIN.
96"MAX
4oz. NONWOVENGEOTEXTILE
STORMKEEPERCHAMBER
3/4" - 2" CLEAN CRUSHEDANGULAR STONE
6"
2
•Backfillmaterialusedforembedment/anchoringandforsurroundingareaswillbe¾”-2”particlesize,clean,crushedangularstone.
•Placementofbackfillmaterialforembedmentandsurroundingareasisbestaccomplishedbyusingthelongreachofanexcavatororstoneshooter/conveyorsystem.No construction equipment shall be situated atop of the chamber system.
• Inordertopreventchambershiftingandtomaintainrowspacing,carefullydepositthestoneevenlyalongthecenterlineofthechamber,allowingthestonedepthbetweentherowstoriseequally.Duringthisphase,stoneheightbetweenrowsshouldnotdifferbymorethan12”atanytime.
•Afterthisinitialanchoringphaseiscomplete,stoneplacementmaycontinuetosurroundthechambersandaroundtheperimeter.Stoneshouldfullyencompassthechambersandshouldcoverthetopofthechambercrowntoaminimumheightof6”.
•Smalllightweighttrackeddozerswithgroundpressurelessthan1100lbs/sfmaybeusedatthispointtofinalizethegradingofcoverstone.Stonemustbepushedparalleltorowsatalltimes.Wheel and Roller Loads Not Allowed.
•Covertheentiretopofthestonebedwithalayerof4oz.nonwovenfabric.Overlapallseams24”.Utilizingexcavatorpositionedoffbed,placeinitialbackfill.Begincompactionat12”.Rollertotravelparallelwithrows.Note: See Figure 5 and Table 1
ChamberBackfillProcess5
Figure 5
30" CHAMBER
4oz. NONWOVENGEOTEXTILE ALL AROUND
PAVEMENT PERENGINEER’S DRAWINGS
6” MIN.
30"
6" MIN.
18"MIN.
8'MAX
SUITABLE FOUNDATION
BEDDINGA
EMBEDMENT BACKFILLB
INITIAL BACKFILLC
FINAL BACKFILLD
6" MIN. 51" 12" MIN.
TheSK75canstore75cubicfeetperchamber.
SK75 Chamber InstallationGuideline
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SK75 Chamber InstallationGuideline
•Usingtheprojectplansandappropriatedetails,fullyassemblethemanifoldsystem.
•Toalleviatethepotentialforscourattheinletlocations,laya15’widestripofwovengeotextile,alongtheentirelengthofthemanifoldmainline,adequatelycarpetingthebeddingbeneaththeinletlocations.See Figure 2&3.
•Positionthefirstchamberandendcapofeachrowwiththeinletpipes.Atthedesignatedlocations,coreanopeningintheendcapandinserttheinletpipe.Theinletpipesshouldpenetrate12”intotheendcap.Repeatthisprocessforeachrow.
• Maintaininga6”minimumclearspacebetweeneachrowisrequired.Theassemblyofeachrowisachievedbyovertoppingthelastriboftheinitialchamberwiththefirstribofthesucceedingchamber.Overlaplocationsarelabeledoneachchamber.Rowassemblyshouldnotexceedthereachofthebackfillplacementequipment.Thefinalchamberofeachrowshallalsobeequippedwithanendcap.
•Endcapsareplacedwiththeendcapoverlappingthetopofthereducedsizejoiningcorrugation.Theendcapshouldbeheldinplacebyscrewsduringbackfilloperations.
ManifoldAssemblyandChamberPlacement3
•Eachchambercrownisequippedwithonecircularcutoutpointtoaccommodatetheverticalinspectionportriser.Usingtheprojectplans,identifywhichchambersshouldbefittedwithinspectionports.Usingareciprocatingsaw,cutoutthe4”diameteropeningattheappropriatelocation.InsertaUni-Teeorequalintotheopening.
•Utilizing4”PVCSch.40pipeandfittings,buildtheinspectionportasshowninFigure 4.
InspectionPortPlacement4
Fig
ure
4
Fig
ure
2
SCOUR PROTECTION GEOTEXTILE
15'-0" MIN.
INLE
T M
ANIF
OLD
SCOUR PROTECTION - WOVEN GEOTEXTILE
ASSEMBLY DIRECTION
Fig
ure
3
15'-0" MIN. WOVEN GEOTEXTILE2'-0"
MIN.
END CAPINLET MANIFOLD
INSPECTION PORT
4” ø PVC or Dual Wall HDPE
4" ø SCHEDULE 40SCREW IN CAP
CONCRETE RING REQUIREDFOR TRAFFIC LOADING
TRAFFIC RATED BOX
FRATCO TAP TEE OR
EQUIVALENT
18"MIN.
96"MAX
4oz. NONWOVENGEOTEXTILE
STORMKEEPERCHAMBER
3/4" - 2" CLEAN CRUSHEDANGULAR STONE
6"
2
•Backfillmaterialusedforembedment/anchoringandforsurroundingareaswillbe¾”-2”particlesize,clean,crushedangularstone.
•Placementofbackfillmaterialforembedmentandsurroundingareasisbestaccomplishedbyusingthelongreachofanexcavatororstoneshooter/conveyorsystem.No construction equipment shall be situated atop of the chamber system.
• Inordertopreventchambershiftingandtomaintainrowspacing,carefullydepositthestoneevenlyalongthecenterlineofthechamber,allowingthestonedepthbetweentherowstoriseequally.Duringthisphase,stoneheightbetweenrowsshouldnotdifferbymorethan12”atanytime.
•Afterthisinitialanchoringphaseiscomplete,stoneplacementmaycontinuetosurroundthechambersandaroundtheperimeter.Stoneshouldfullyencompassthechambersandshouldcoverthetopofthechambercrowntoaminimumheightof6”.
•Smalllightweighttrackeddozerswithgroundpressurelessthan1100lbs/sfmaybeusedatthispointtofinalizethegradingofcoverstone.Stonemustbepushedparalleltorowsatalltimes.Wheel and Roller Loads Not Allowed.
•Covertheentiretopofthestonebedwithalayerof4oz.nonwovenfabric.Overlapallseams24”.Utilizingexcavatorpositionedoffbed,placeinitialbackfill.Begincompactionat12”.Rollertotravelparallelwithrows.Note: See Figure 5 and Table 1
ChamberBackfillProcess5
Figure 5
30" CHAMBER
4oz. NONWOVENGEOTEXTILE ALL AROUND
PAVEMENT PERENGINEER’S DRAWINGS
6” MIN.
30"
6" MIN.
18"MIN.
8'MAX
SUITABLE FOUNDATION
BEDDINGA
EMBEDMENT BACKFILLB
INITIAL BACKFILLC
FINAL BACKFILLD
6" MIN. 51" 12" MIN.
TheSK75canstore75cubicfeetperchamber.
SK75 Chamber InstallationGuideline
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SK75 Chamber Installation Guideline
•Uponarrivaltotheprojectsite,visuallyinspectthechamberstoensureaccuratequantities.Anydamagethatmayhaveoccurredduringtransportshouldalsobenotedatthistime.
•Forefficientshippingandtoalloweaseinhandlingandstorage,thechambersarestackedneatlyuponthemselvesandsecuredtoapallet.Unloadingisbestaccomplishedviaforklift.
•Chambersshouldbestoredinanareathatisflatandfreeofdebris.Toavoidthepotentialfordamage,thisstorageareashouldbeisolatedwellawayfromthetravelingpathsusedforconstructionvehicletraffic.
•Usingtheprojectplansandtheappropriatedetails,excavatethechambersystembedinamannertosufficientlyaccommodatethechambersandmanifolds.Toensureanadequatefit,andtoallowforastoneborder,anadditional12”ofexcavationisrequiredbetweenthetrenchsidewallsandthechambersystem.
• Ifstandingwaterispresent,dewateringmeasuresshouldbeutilized.
• Ifasoft,unstablefoundationisencountered,itshouldbeoverexcavatedandreplacedwithasuitablematerialasdeterminedbytheprojectengineer.
•Uponthepreparedfoundation,placea4oz.nonwovenfabriconthebedbottomandupandalongthesidewalls.Maintaina24”overlapoffabricatallseams.
•Usingtheprojectplansandappropriatedetails,providealevelbaseof¾”-2”cleancrushedangularstoneovertheentiretrenchbedbottom.Foundationstonedepthasindicatedontheprojectplans(6”minimum).See Figure 1.Usingavibratoryroller,compactthestonebasetoachieveaflatlevelsurface.
• Ifspecifiedontheprojectplans,theperimeterunderdrainpipingmaybelaidatthispoint.
FoundationandBeddingPreparation
HandlingandStorage
2
1
Priortoinstallationofthechambersystem,adequateattentiontothefollowingguidelinesisrequired.Inaddition,thechambersupplier,chamberinstaller(sitecontractor)andthedesignengineermaymeetforapre-constructionmeetingtodiscussanyquestionsrelatingtotheinstallationprocess,andtheguidelinesherein.
Fig
ure
1
CHAMBER WIDTH + 24"
3/4" - 2" CLEAN CRUSHED ANGULAR STONE 4oz. NONWOVEN GEOTEXTILE
WITH 24" SEAM OVERLAY
6"
EXCAVATE CHAMBERSYSTEM BED
ConstructionLoading6
Fill Material Location
[D] Final Backfill -FillmaterialforLayerDstartsatthetopoftheClayertothebottomofthepavementortothefinishedgradeofanunpavedsurface.Thepavementsubbasemaybepartofthefinalbackfill.
[C] Initial Backfill -MaterialforlayerCstartsatthetopoftheembed-mentzone(layerB)andcontinuesto18”abovethetopofthechamber.Thepavementsubbasemaybepartoftheinitialbackfilllayer
[B] Embedment Stone -Embedmentstonewillsurroundthechambersandextendsfromthetopofthebeddingstone(layerA)tothebottomofthefabriclayer.
[A] Bedding Stone -BeddingStoneextendsfromthesubgradetothefootofthechambers.
Material Description
Anybackfillwhichprovidesadequatesubgradefortheprojectpertheengineer’splans.Plansshallindicatesubgraderequirements.
Well graded granular material, <35% fines.
3/4” to 2” clean crushed angular stone.
3/4” to 2” clean crushed angular stone.
AASHTO M43Designation
N/A
AASHTO M45A-1, A-2, A-3OrM433, 357,4,467,5,56,57, 6,67,68, 7, 78,8,89, 9,10
3,357,4,467,5,56,57
3,357,4,467,5, 56,57
Compaction Requirements
Subgradewillbeplacedandcompactedtotherequirementsasshownonthesiteplans.
Compactionwillnotbeginuntilaminimumof12”ofmaterialisplacedoverthechambers.Additionallayersshallbecompactedin6”Iiftstoaminimumof95%standardproctordensityforwellgradedmaterial.Rollergrossvehiclesarenottoexceed12,000lbs.anddynamicforcenottoexceed20,000lbs.
No compaction required
Placed in 6” lifts and compacted with a vibratory roller.
Table
1
Material Location
[D] Final Fill Material
[C] Initial Fill
[B] Embedment Zone
Fill Depth above chambers
in.36”Compacted
24” Compacted
24” Dumped
18”
12”
6”
Table
2
Max Axle Loadfor Trucks
lbs.32,000
32,000
32,000
32,000
16,000
8,000
Max Wheel Loadfor Loaders
lbs.16,000
16,000
16,000
16,000
Not Allowed
Not Allowed
TrackWidth
in.12”18”24”30”36”
12”18”24”30”36”
12”18”24”30”36”
12”18”24”30”36”
12”18”24”30”36”
12”18”24”30”36”
Max GroundPressure
psf34202350185015101310
24801770143012101070
22451625132511351010
2010148012201060950
154011901010910840
1070900800760720
Max Drum WeightDynamic Force
lbs.38,000
20,000
20,000Grossweightofrollernottoexceed12,000lbs.
20,000Grossweightofrollernottoexceed12,000lbs.
20,000Grossweightofrollernottoexceed12,000lbs.
NotAllowed
Max allowable roller loads
Max Allowable Wheels Loads
Max Allowable Track Loads
Refer to Table 2formaximumallowableconstructionvehicleloads.
SK75 Chamber InstallationGuideline
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