2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing...
Transcript of 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing...
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www.concretepipe.org June 2007
© 2007
CONCRETE PIPE 101
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Agenda
o Terminologyo Manufacturing
Methodso ASTM
Specificationso Pipe Joints
o Pipe Testingo Fittingso Manholeso Sizingo Flotation
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Manufacturing Methods
Wet CastDry Cast
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Manufacturing Methods
Wet Cast- Uses a concrete mix that is wetrelative to the mixes used in otherprocesses. Usually contains a slump lessthan 4 inches and used for production oflarge diameter pipe.Dry Cast- Uses a concrete mix with zeroslump. The method has several variationsbut all use low frequency-high amplitudevibration to distribute and densely compactdry mix in the form.
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Two Methods of Dry Cast Manufacturing
Vibratory
Sources
o InternalHydraulic
o ExternalPneumaticElectricHydraulic
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Dry Cast 84”x 16’
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Dry Cast Box Culvert
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3 Types of ASTM Standards
ManufacturingTestingInstallation
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Manufacturing Specifications
o C-14 – Non-reinforced ConcretePipe
o C-76 – Reinforced Concrete Pipeo C-361 – Low Pressure RCPo C-443 – Rubber Gasket Joints for
RCPo C-478 – Manholeso C-506 – Arch RCPo C-507 – Elliptical RCPo C-1433 – Precast Box Culverts
• Replaced C-789 & C-850
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Pipe Design Considers Installation
Note from ASTM C76: This specification is a
manufacturing and purchase specification only, and does
not include requirements for bedding, backfill, or the
relationship between field load condition and the strength
classification of pipe. However, experience has shown
that the successful performance of this product depends
upon the proper selection of the class of pipe, type of
bedding and backfill, and care that installation conforms to
the construction specifications. The owner of the
reinforced concrete pipe specified herein is cautioned that
he must correlate the field requirements with the class of
pipe specified and provide inspection at the construction
site.
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Test Specifications
o C-497 – Test Methods for RCP & MHo 3 Edge Bearingo Core & Cylinder Strengtho Hydrostatic Test
o C-924 – Low Pressure Air Testing, upto 24”
o C-969 – Infiltration/Exfiltration Testof Installed Concrete Pipe
o C-1214 – Vacuum Testing of InstalledPipe
o C-1244 – Vacuum Testing of InstalledMH
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Installation Specifications
o C-1479 – Installation of RCPUsing Standard Installationso Companion Design Spec w/ ASCE 15
o Section 27 of AASHTO LRFDBridge ConstructionSpecifications
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www.concrete-pipe.orgJune 2007
© 2007
Joints
The links that make thesystem whole
Additional Info in the Concrete Design Manual - click here
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Bell & Spigot or Tongue & GrooveWhat’s the Deal?
Female end of pipe (bell, groove) – portion of the end of the pipe, regardless
of shape, which overlaps a portion of the end of the adjoining pipe
Male end of pipe (spigot, tongue) - portion of the end of the pipe, regardless
of shape, which is overlapped by portion of the end of the adjoining pipe
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Arch & Elliptical Shapes
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Define the Service Requirements
Soil TightSilt TightWatertight gravityWatertight pressure
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Soil Tight/ Silt Tight
Storm drains and culverts only!Intended to preclude soil / silttransfer through jointNon-precision joint
Mastic sealant Preformed butyl sealant Mortar Joint Fabric External Wrap
ASTM C990
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Soil Tight Joint
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Soil Tight Joint with Fabric
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Pushing Box Joint Home
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Soil Tight/Silt Tight Joint with External Wrap
ASTM C877
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Soil/ Silt Tight Joint
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Soil Tight Joint
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Watertight – Gravity*
Precision Joint O-Ring gasket Profile gasket
ASTM C443ASTM C1628
* Tested to zero leakage in the manufacturing plant
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Watertight - Gravity Joint
Confined Gasket - O-Ring or Profile
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Watertight - Gravity Joint
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Watertight - Gravity Joint
Offset Spigot - Profile Gasket
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Watertight - Gravity Joint
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Watertight - Pressure
Precision Joint O-Ring gasket
ASTM C361
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Steel Joint Ring Pipe
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Gasket materials
Polyisoprene - standard useChloroprene - moderatehydrocarbon resistanceNitrile / Viton - highhydrocarbon resistance
o-ring gasket profile gasket
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Joint Testing
Ensures joint
integrity after
installation
ASTM C497
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Fittings
Bevels / Radius, notalways availableBendsTees
NOTE: Check supplier for availability
Additional Info in the Concrete Design Manual - click here
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Bevels / Radius Pipe or
Boxes
Additional Info. – Click Here
Curved Alignment
Design Data 21
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Fittings
BendsTees/WyesReducers/
IncreasersAdapters
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Fittings
BendsTees/WyesReducers/IncreasersAdapters
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Manholes
TestingSizingFlotationConnectors & Joint SealantsDepth – Round or Square
Additional Info in the Concrete Design Manual - click here
Additional Design Data – Click Here
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Vacuum Testing Manholes
ASTM C-1244
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Vacuum Testing Manholes
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Additional Design Data – Click Here
Manhole Flotation
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Manhole Sizing
FlexibilityHandlingWeight
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SIZING MANHOLES
MULTIPLE HOLES AT SAME ELEVATION
0.41890.52360.62830.73300.8378
48”60”72”84”96”
M, in/degMH Dia. M x Angle = YY - Pipe #1 Opening/2 - Pipe #2 Opening/2 = aA = Distance between the two openingsMinimum “a” is 6” for 48” - 72” Dia. MH and 8” for *4” Dia. MH
M= Circumference/360º
Example:Pipe #1 = 36” RCP “B” Wall @ 6:00Pipe #2 = 36” RCP “B” Wall @ 3:00Angle = 90ºTry 72” Dia. MHY = 0.6283 x 90º = 56.55A = 56.55” - 53/2 - 53/2 = 3.55” < 6”; too smallTherefore, try 84” Dia. MH:Y = 0.7330 x 90º = 65.97”A = 65.97” - 51/2 - 51/2 = 14.97” > 8”; OK
a
90°
C L
C L
Pipe #1
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105856691786080847154
67/7070/72.575/7962/644859/6160/6363/6670/7555/574250/5351/53.55./5555.5/5948/5036
4543434541303535353638342242827.52828292718242424.52525241520202020.420.52012
96ӯ84ӯ70ӯ60ӯ48ӯ
Hole Size (Arc) per MH Diameter, in.Holechord
Dim., in.
PipeDia., in.
Note: Where two dimensions are shown, I.e. 48/50, the first one is for “B” Wall pipe and the second one is for “C” Wall pipe. Use the Arc length for calculations.
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Concrete Pipe Design Basics
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Fact :Buried Pipe Must Perform
Two Critical Functions
Buried Pipe
Conduit
Structure
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Structure
Conduit
Concrete Pipe
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Bedding
Foundation
Rigid Pipe
Traffic Load
Earth Load
Loads
SupportingStrength
Initial Backfill
Final Backfill
Haunching
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Unstable Foundation!
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How do we define the
strength of concrete
pipe?
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D-Load ? 3-Edge Bearing
Class
Wall Thickness ?
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54
Wall Thickness & Reinforcement
A-Wall – Wall thickness ininches = Diameter in feet
B-Wall – Wall thickness ininches =Diameter in feet+1”
C-Wall – Wall thickness ininches =Diameter in feet+1.75”
24” Pipe = 2” Wall
24” Pipe = 3” Wall
24” Pipe = 3.75” Wall
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Support
Test Specimen
Applied LoadThree-Edge-Bearing
ASTM C76, C506, C507
ASTM C497
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D-Load
Supporting strength ofa pipe loaded underthree-edge bearing testconditions, expressedin pounds per linearfoot per foot of insidediameter or horizontalspan when testedaccording to ASTMC497.D0.01 = load (lbs/ft. span/ft.length) to produce 0.01”crack, 12” long
DULT = load (lbs/ft. span/ft.length) to cause structuralfailure
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Gravity Pipe Classes
3750375030003000VV
3000300020002000IVIV
2000200013501350IIIIII
1500150010001000IIII
12001200800800II
D-Load Ult.D-Load Ult.D-Load .01D-Load .01
AASHTO M170AASHTO M170ASTM C76ASTM C76
ClassClass
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60” ASTM C-76 Class IV 8’
D0.01 = 2000
DULT = 3000
Total Load Required:
D0.01 = (60/12)(8)(2000)
= 80,000 lbs.
DULT = (60/12)(8)(3000)
= 120,000 lbs.
3750375030003000VV
3000300020002000IVIV
2000200013501350IIIIII
1500150010001000IIII
12001200800800II
D-LoadD-LoadUlt.Ult.
D-LoadD-Load.01.01
AASHTOAASHTOM170M170ASTMASTMC76C76
ClassClass
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60” Cl IV RCP
80,000 lbs.
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Loads on Pipe
EarthLiveConstructionOther
Additional Design Data – Click Here
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Where:
D-Load.01 = Required structural capacity, lb./ft.2
WE = Earth load, lb./ft.
WL = Live load, lb./ft.
D = Pipe diameter, ft.
BFE = Earth Load Bedding Factor
BFL = Live Load Bedding Factor
FS = Factor of safety
Selection of Pipe Strength
Additional Info in the Concrete Design Manual - click here
D–load.01 = WE
BFE
+WL
BFL
XFS
D
![Page 62: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/62.jpg)
Gravity Pipe Classes
3750375030003000VV
3000300020002000IVIV
2000200013501350IIIIII
1500150010001000IIII
12001200800800II
D-Load Ult.D-Load Ult.D-Load .01D-Load .01
AASHTO M170AASHTO M170ASTM C76ASTM C76
ClassClass
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Prescriptive Specification
“Cook Book Spec”
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Bedding
Factor
depends on
type and
quality of
installation
Standard Installations – Click here
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Who Is Responsible for Bedding
Factor?
Engineer via specification,inspection and testingContractor via installation meansand methodsInspector via inspection andtesting
Additional Info in the Concrete Design Manual - click here
![Page 66: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/66.jpg)
How do we design
concrete pipe?
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System Design
Structure
Joint
Durability
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System Design
Structure
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Design Basics
InstallationMethodology &Earth LoadDetermination
Additional Info in the Concrete Design Manual - click here
![Page 70: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/70.jpg)
Pipe Installation Methods
Trench
Positive projectionembankment
Negative projectionembankment
Jacked, bored, or tunneledAdditional Info in the Concrete Design Manual - click here
![Page 71: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/71.jpg)
Installation Methods
Positive
ProjectingTrench Tunnel
Negative Projecting
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Positive Projecting
Embankment
Existing Grade
Final Grade
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Positive Projecting Embankment
![Page 74: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/74.jpg)
Trench
Existing and Final Grade
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Trench
Undisturbed
SoilUndisturbed
Soil
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Negative Projecting Embankment
Existing Grade
Final Grade
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Negative Projecting Embankment
![Page 78: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/78.jpg)
Trenchless
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Installation
(embedment) Types or
Classes
Additional Info in the Concrete Design Manual - click here
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Standard Installations
D i
DoDo/6
Min.
Do Min.
Do/3Foundation
H
Haunch
Middle Bedding
Outer Bedding
Lower Side
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Standard Installations
- ASTM & AASHTOInstallation Type Bedding Thickness Haunch & Outer Bedding Lower Side
Type I DO/24 minimum, not 95% Category I 90% Category Iless than 3 in. (75 mm). 95% Category IIIf rock foundation, use 100% Category IIIDO/12 minimum, not lessthan 6 in. (150 mm).
Type 2 DO/24 minimum, not 90% Category I 85% Category Iless than 3 in. (75 mm). 95% Category II 90% Category IIIf rock foundation, use 95% Category IIIDO/12 minimum, not lessthan 6 in. (150 mm).
Type 3 DO/24 minimum, not 85% Category I 85% Category Iless than 3 in. (75 mm). 90% Category II 90% Category IIIf rock foundation, use 95% Category II 95% Category IIIDO/12 minimum, not lessthan 6 in. (150 mm).
Type 4 No bedding required No compaction required, No compaction required,except if rock except if Category III, except if Category III,foundation, use DO/12 use 85% use 85%minimum, not less than6 in. (150 mm).
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Standard InstallationsC
ost
Type 1 Type 2 Type 3 Type 4
Pipe Cost
Construction Cost
Standard Installation
Total Cost
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Options for Finding
Required Pipe Strength
Plug & chug -blue book
Fill height tables
Computersoftware -PipePac 2000
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84
Steps for Determining the Required
Pipe Strength
1 - Select the method of installation(trench, embankment, etc.)2 - Determine the earth load(Installation Type: 1-4)3 - Determine the live load4 - Determine the bedding factor(installation type: 1 – 4)5 - Calculate the required D-Load6 - Specify the class
![Page 85: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/85.jpg)
D–load.01 = WE
BFE
+WL
BFL
XFS
D
![Page 86: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/86.jpg)
Step 1
Determine theMethod ofInstallation
Additional Info in the Concrete Design Manual - click here
![Page 87: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/87.jpg)
Step 2
Determine EarthLoad
Additional Info in the Concrete Design Manual - click here
![Page 88: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/88.jpg)
![Page 89: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/89.jpg)
89
WE = VAF x PL
VAF – Vertical Arching FactorType 1 VAF = 1.35Type 2 VAF = 1.40Type 3 VAF = 1.40Type 4 VAF = 1.45
PL - Prism Load, the weight of the column of earthcover over the pipe outside diameter
![Page 90: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/90.jpg)
Step 3
Determine the LiveLoad
Additional Info in the Concrete Design Manual - click here
![Page 91: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/91.jpg)
Live Load Sources
Highway loadsRailroad loadsAircraft loadsConstruction loadsOther
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![Page 93: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/93.jpg)
Step 4
Determine the BeddingFactor
Additional Info in the Concrete Design Manual - click here
![Page 94: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/94.jpg)
94
Bedding Factors, Embankment Conditions
Pipe Standard Installation
Diameter Type 1 Type 2 Type 3 Type 4
12 in. 4.4 3.2 2.5 1.7
24 in. 4.2 3.0 2.4 1.7
36 in. 4.0 2.9 2.3 1.7
72 in. 3.8 2.8 2.2 1.7
144 in. 3.6 2.8 2.2 1.7
Notes:
1. For pipe diameters other than listed in Illustration 4.21, embankment
condition factors, Bfe can be obtained by interpolation.
2. Bedding Factors are based on the soils being placed with the minimum
compaction specified in Illustration 4.4 for each standard installation.
![Page 95: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/95.jpg)
Step 5
Calculate theRequired D-Load
Additional Info in the Concrete Design Manual - click here
![Page 96: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/96.jpg)
Where:
D-Load.01 = Required structural capacity, lb./ft.2
WE = Earth load, lb./ft.
WL = Live load, lb./ft.
D = Pipe diameter, ft.
BFE = Earth Load Bedding Factor
BFL = Live Load Bedding Factor
FS = Factor of safety
Selection of Pipe Strength
Additional Info in the Concrete Design Manual - click here
D–load.01 = WE
BFE
+WL
BFL
XFS
D
![Page 97: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/97.jpg)
Step 6
Select the Class
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Gravity Pipe Classes
ASTM C76 Class D-Load .01 D-Load ult.
I 800 1200
II 1000 1500
III 1350 2000
IV 2000 3000
V 3000 3750
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Fill Height Tables
![Page 100: 2007 11 Concrete Pipe 101...Dry Cast Box Culvert. 8 3 Types of ASTM Standards Manufacturing Testing Installation. 9 ... MH Dia. M, in/deg M x Angle = Y Y - Pipe #1 Opening/2 - Pipe](https://reader033.fdocuments.us/reader033/viewer/2022041721/5e4e8a71f67b1851d96902f5/html5/thumbnails/100.jpg)
Installation Type Bedding Thickness Haunch & Outer Beddding Lower SideType 1 Do/24 minimum, not less 95% Category I 90% Category I
than 3 in. (75 mm). If 95% Category IIrock foundation, use 100% Category III Do/12 minimum, notless than 6 in. (150 mm).
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Installation Type Bedding Thickness Haunch & Outer Bedding Lower Side
Type 4 No bedding required No compaction required, No compaction required,except if rock except if Category III, use except if Category III, useFoundation, use 85% 85%Do/12 minimum, notless than 6 in. (150mm)
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Computer
Program
PipePac 2000
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www.concretepipe.org June 2007
© 2007
Congratulations! You
are almost finished.
Please see remaining slides forthe exam questions andsubmittal form to receive yourPDH.
PDH for this course: 2.0Non Member Fee: $99.00Member & Non Industry Engineer Fee: no charge
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108
Instructions for Submitting Exam
Print out the exam submittal form and test.Complete the exam by circling the answers onthe form.Complete submittal form.Mail your exam, submittal form and payment(if applicable) to:American Concrete Pipe Association
8445 Freeport Parkway, Suite 350
Irving, TX 75063Attn: Professional Membership – Online Exam
Your exam will be graded by the ACPA and theresults provided to you within 60 days ofreceipt.
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RCP 101 Exam Submittal Form
Required Contact Information:
Name: Date:
Street Address:
Mailing Address:
City: State: Zip Code:
Telephone: Fax:
Website: www E-mail:
Certification of ethical completion: I certify that I read the course presentation, understood the learning objective, and completed the exam questions to the best of my ability. Additionally, the contact information provided above is true and accurate
Signature: Date:
PDH Value: Your exam answers will be graded by The American Concrete Pipe Association. If you answer at least 75 percent of the questions correctly, you will receive a certificate of completion from The American Concrete Pipe Association within 60 days and will be awarded 2.0 professional development hour (equivalent to 0.2 continuing education unit in most states). Note: It is the responsibility of the licensee to determine if this method of continuing education meets his or her board(s) of
registration’s requirements.
Instructions: Select one answer for each exam question and clearly circle the appropriate letter. 1) a b c d 5) a b c d
2) a b c d 6) a b c d
3) a b c d 7) a b c d
4) a b c d 8) a b c d
Fee: $99.00
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American Concrete Pipe Association 8445 Freeport Parkway, Suite 350, Irving, TX 75063 (972) 506-7216 Fax (972) 506-7682
www.concretepipe.org
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110
Exam
Which two methods are used to manufacture concrete pipe?Wet cast and wet-outPackerhead and HydrostaticPackerhead and dry castInternal and external hydraulic
Soil Tight Joints are used for what two design types?Culverts and Storm DrainsManholes and CulvertsStorm Drains and ManholesSanitary Sewer and Manholes
The supporting strength of a pipe loaded under three-edgebearing test conditions is the same as in the installedcondition.
TrueFalse
Which installation method results in the highest soil load onthe pipe?
Negative projectingPositive projectingTrenchTunnel
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111
Exam (cont.)
Name the two different types of Watertight joints.Soil Tight and Water TightTongue & Groove and Bell & SpigotO-ring and ProfilePressure and O-ring
What is the test used to determine D-load in a pipe?There is no testThree-Edge Bearing TestJoint Shear TestHydrostatic Test
What two critical functions must buried concrete pipeperform?
Barrier and StructureFramework and SystemStructure and ConduitChannel and Aqueduct
The earth load, live load and bedding factor are allconsidered in determining what?
D-LoadHydraulic CapacityDiameter of PipeType of Joint
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112
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