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‡ Contain-It
‡ Contain-It
Easy and Reliable Secondary Containment
Piping System
• Split Pipe and Fittings
• Solid Pipe
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For more information about any of our product lines, please call (800) 854-4090.
Not for Use with Compressed Air or Gases
George Fischer, Inc. DOES NOT RECOMMEND the use of thermoplastic piping products for systems totransport or store compressed air or gases, or the testing of thermoplastic piping systems with compressed air orgases in above or below ground locations. The use of George Fischer, Inc. products in compressed air or gassystems automatically voids George Fischer, Inc. warranty for such products, and their use against ourrecommendation is entirely the responsibility and liability of the installer. George Fischer, Inc. will not acceptresponsibility for damage or impairment from its products, or other consequential or incidental damages causedby misapplication, incorrect assembly, and/or exposure to harmful substances or conditions.
Threaded fittings are not recommended for pressure applications.
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‡ Contain-It
Table of Contents
Overview ....................................................................................................................................................................................................9.4
Installation Instructions:
Equipment needed for assembly ........................................................................................................................................................9.6
Solid pipe preparation ..........................................................................................................................................................................9.6
Solid pipe installation.............................................................................................................................................................................9.6
Split pipe preparation ............................................................................................................................................................................9.7
Pipe clamp usage instructions .............................................................................................................................................................9.8
Split fitting assembly ...............................................................................................................................................................................9.9
Preparation for injection ........................................................................................................................................................................9.9
Instructions for pneumatic injection gun .........................................................................................................................................9.10
Instructions for manual injection gun ...............................................................................................................................................9.10
Cold weather instructions ...................................................................................................................................................................9.11
Injection of split pipe ............................................................................................................................................................................9.11
Injection of split fittings ........................................................................................................................................................................9.11
Containment of flanged systems ......................................................................................................................................................9.12
Installation of one piece fittings ........................................................................................................................................................9.12
Installation of drainage patterns ......................................................................................................................................................9.12
Installation Time Estimate ....................................................................................................................................................................9.13
Adhesive Requirements ........................................................................................................................................................................9.14
Thermal Expansion Compensation ..................................................................................................................................................9.15
Soil Load ...................................................................................................................................................................................................9.16
Support Spacing ....................................................................................................................................................................................9.17
Centralizer Spacing ..............................................................................................................................................................................9.18
Testing .....................................................................................................................................................................................................9.19
Repair .....................................................................................................................................................................................................9.19
Chemical Resistance Data (for containment purposes only) .................................................................................................. 9.20
Specification ........................................................................................................................................................................................... 9.26
+GF+ Contain-It Pipe and Fitings ................................................................................................................................................... 9.27
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Applications
Chemical Process Industry
The retrofit capability and chemicalresistance of +GF+ Contain-It make thisan ideal choice for containment pipingof chemical process lines.
When you combine the advantages of+GF+ Contain-It with George Fischer’scomplete line of thermoplastic pipingsystems, you’ll see that you can use “onesource” for all your process and wastepiping needs.
Environmental ProtectionRequirements
Federal, state and local regulations havebeen created to protect our environmentfrom industrial pollution. Many of theseregulations provide criminal penalties forowners, managers, and employees forenvironmental damage caused bychemical spills and leaks. For example,the Clean Water Act allows fines of$25,000 to $50,000 per day of violationand prison terms of one to three years.
Industry has been assessed clean-upexpenditures which far exceed the coststo install protective measures. Whenpenalties and fines are added to thecosts of cleaning up spills and leaks, itbecomes obvious that industry has alegal and financial responsibility forprotecting our environment. GeorgeFischer’s Secondary Containment Systemprovides the necessary environmentalprotection at a fraction of potentialclean-up costs. The system includesmany features which yield benefits to theowner, engineer and installer.
‡ Contain-It
Offers:
• Split pipe and fittings
• Fits over virtuallyany carrier system
• Lightweight, easy toinstall
• Clear construction
• Interlockingconstruction
• Engineered bondingmedia channels andflanges
• Pre-drilled bondingmedia injection ports
• Quick and easyfitting clips
• Predetermined fittingclip locators
Split Pipe and Fittings
With pipe split along its length, the+GF+ Contain-It piping system can beinstalled over virtually any tested carriersystem. The carrier system can be testedwithout interference from the contain-ment piping. Any leaks found duringtesting can be easily repaired. Leakdetection cable can be installed as thesplit components are assembled, elimi-nating the need for time consumingcable pulling or the inclusion of lines topull the cable. Containment piping canbe retrofitted over plastic and metallicsystems above and below ground,protecting employees, equipment andthe environment. Split Pipe and Fittingsare available in 4" and 6".
Solid Pipe
Solid pipe may be combined with splitfittings in installations which do notrequire retrofit capability or where it ispreferred to pull a leak detection cable.Solid Pipe is available in 4" and 6".
Flexible Adapter
Flexible adapters allow connection tometal or chemical resistant plastic carriersystems other than PVC.
Centralizer
Centralizers center and support thecarrier pipe. They are available for IPSand metric, for one or more carrier pipes.
Split Pipe and Fittings
Solid Pipe
Flexible Adapter
Centralizer
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‡ Contain-It
Pressure Rated
The +GF+ Contain-It system can be air pressure tested or, if preferred, a hydrostatictest may be specified.
Clear Polyvinyl ChlorideConstruction
The clear construction allows for totalinspection of the annular space which,in above ground installations, mayeliminate the need for expensive leakdetection systems. Polyvinyl Chloride’schemical resistance, high tensile strengthand good impact resistance provides amaterial that is suitable for a broadrange of applications.+GF+ Contain-ItPVC secondary containment system issuitable for the intermittent and shortterm exposure found in containmentpiping.
Few Tools Needed
+GF+ Contain-It requires fewer and lessexpensive tools than other containmentpiping systems. With +GF+ Contain-It,there is no fusion welding, eliminatingthe need for those tools which simplifiesthe installation procedures. Except forthe common pipe preparation tools, allyou’ll need for +GF+ Contain-It are thefollowing.
• Fitting Clips and Hammer — weprovide the clips to hold the fittings inplace prior to bonding. The hammer isused to drive the clips into place.
• Pipe Clamp — helps you snap the splitpipe together.
• Drill and Counterbore Drill Bit — to drillinjection ports when needed.
• Injection Gun — to inject bondingadhesive into the fittings.
Injection Bonding System
The Injection Bonding System provides acontrolled application of the bondingmedia, eliminating the mess usuallyassociated with brush applied resinsand solvent cements. Futhermore, fusionwelding is eliminated allowing installa-tion using less expensive tools. Thebonding media is injected into thelength of the split pipe to provide apressure rated leak free seal.
Dim. with Air with Waterwith flex. Term. Fitting with rigid Term. Fittingwith Female Adapter
4" 5 psi (0.3 bar) 5 psi (0.3 bar) 32 psi (2.2 bar)
6" 5 psi (0.3 bar) 5 psi (0.3 bar) 32 psi (2.2 bar)
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Installation Instructions
Solid Pipe Preparation1 . Determine pipe length via typical
on site measurements.
2. Cut pipe. Square cuts are impor-tant. Solid pipe may be cut with atubing cutter designed for cuttingplastic pipe.
3. Deburr pipe ends using a knifeblade or file.
4. Wipe pipe end with a clean, drycloth.
5. Prior to installing solid pipe, installcentralizers on primary pipe (seepage 9.18).
Solid Pipe Installation
The exclusive use of solid Contain-It pipemay result in difficulty when joining theprimary piping. Therefore, the installershould determine the ease with whichthe primary pipe fittings may be as-sembled within the Contain-It system.Pipe fittings must have enough room forthe joining method.
There are two methods by which theprimary pipe fittings will be accessibleenough for proper installation. Bothmethods are illustrated on page 9.7.
Method #1:
Utilizes solid pipe and at least oneextended style coupling along a piperun.
Method #2:
Utilizes split pipe with either a standardor extended style coupling along a piperun.
Equipment Needed For Assembly
• Fine tooth saw and miter box or chop saw with fine tooth blade• Tubing cutter with wheel designed for plastic pipe (solid pipe only)• File or pocket knife for deburring• Pipe clamp (for split pipe assembly)• Hammer• Electric or battery operated hand drill• Counterbore drill bits• Crossover hole drill bits• Pneumatic adhesive injection gun (air supply not to exceed 73 psi inbound air
pressure) with air regulator gauge and hose assembly (0-100 psi gaugerange) or manual adhesive injection gun
• Flash light and mirror• Hot box for cartridges and heat blanket wrap/hot air heater for split pipe (for
low temperature applications)
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‡ Contain-It
Split Pipe Preparation1 . Determine pipe length via typical on
site measurements.
2. Cut pipe. Square cuts are impor-tant. Split pipe requires the use of asaw and miter box or a chop sawwith a fine tooth blade.
3. Deburr pipe ends using a knife bladeor file.
4. When using split pipe, a partingseam can be seen (and felt) wherethe pipe separates. When cuttingany split pipe for preparation/installation in the field, acrossover hole has to be drilledinto this seam, on the cut end,and located within the bondingchannel of the fitting.
These locations are:• For most fittings — the cross-
over hole must be drilled 1” fromeach end of the pipe length.
1'
Split Pipe
Standard or ExtendedStyle Coupling
Solid PipeSolid Pipe
Extended Style CouplingSolid Pipe
1'
Split Pipe
Standard or Extended Style Coupling
Solid Pipe
Solid Pipe
Extended Style Coupling
Solid Pipe
Method #2
Method #1
Solid Pipe Installation
3⁄8"
parting line1" 1"
crossover hole
• For extended style couplings —based upon varying pipensertions, the location of thecrossover hole is to be determined so that it is located withinthe bonding channel of thefitting.
Note: The crossover hole drill bit for6” split pipe is identified by a flatsurface ground on one side of the bitas shown below.
6” Crossover Hole Drill Bit available aspart of kit, part number 4693-105K
5. The failure to properly drill crossoverholes when using split pipe will resultin leaks during a pressure test.If you are not completely sure of thisprocedure, STOP IMMEDIATELYand contact George FischerTechnical Service Department at(800) 854-4090.
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6. Inspect the crossover hole for com-plete removal of the interlocking taband any obstructions that may affectadhesive flow.
7. Prior to assembling split pipe, installcentralizers on primary pipe (refer topage 16 of Contain-It TechnicalManual).
8. Snap split pipe together for its fulllength using the pipe clamp (seebelow for more information) toinsure full interlock of the tongue andgroove seam.
9. Wipe pipe end with a clean, dry cloth.
�Parting Line Split Pipe
���
- Adhesive
Crossover Hole
Interlock Tab
Pipe Clamp UsageInstructions
Normally Contain-It split pipe can behand assembled by pressing the halvestogether. However, in some cases,additional force may be required to fullyengage the Contain-It split pipe seam.The Contain-It pipe clamp provides theadditional force for assembing split fourinch and six inch pipe.
Assembling Clamp Halves
Four inch and six inch clamp halves arefurnished and are readily inter-change-able by following this procedure:
1 . Remove both hair pin cotters (5) fromthe clevis pins.
2. Remove the clevis pins (4).
3. Remove clamp halves (1 or 2) fromthe locking pliers.
4 Insert appropriate clamp halves withclevis pin hole facing forward in thelocking pliers arm as shown in thedrawing. The clevis pin hole (5)should be positioned forward on theclamp half, so that the tab does notextend past the pliers (3).
5. Replace clevis pins and hair pincotters.
6. To adjust the pipe clamp, open thelocking pliers and position pipe allthe way back in the clamp jawswith pipe seams centered in the jawopenings. Close the locking pliersand adjust screw until clamp fitsfirmly on the pipe. Open lockingpliers and tighten adjusting screwone to one and one half turns. Thisadjustment should provide sufficientforce to press the pipe halves to-gether.
Using the Pipe Clamp
The pipe clamp is now ready for use.Position the pipe clamp, as shown in thedrawing, with the pipe seams centeredin the jaw openings. Close the lockingpliers to exert force suitable to fullyengage the split pipe seam. Repeat thisoperation along the pipe barrel untiltotal engagement is achieved.
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‡ Contain-It
Split Fitting Assembly1 . Assemble fitting halves over pipe
with the inter-locking fitting surfacesaccurately aligned.
2. Install fitting clips on all locators andtap them into place.
• For most fittings — makesure that the pipe is bottomedout in the socket.
• For extended style couplings —make sure each pipe is insertedbeyond the minimum depth markon the fitting. A maximum spaceof 51/2” may exist between pipeends.
���Parting Line Split Pipe
�- Adhesive
Injection Port
Interlock Tab
Adhesive Channel
crossover hole
2" 2"
pre-drilled injection port
field-drilled injection port
Preparation For InjectionIf split pipe is being used, check to see ifthe predrilled injection ports on the pipeare located close to each fitting. If not,drill new injection ports within 2” of eachfitting along the middle of the adhesivechannel of the split pipe.
Injection Hole Location
Injection Port Detail
Note: If split pipe is used with theextended style coupling, it is impor-tant that the crossover holes do notalign with the bonding channel ofthe fitting.
Note: The additional injection portswill allow proper adhesive flowthrough the crossover holes. Theproper drill bits for this operation are:
4” dia. — Part No. 4693-1046” dia. — available as part of kit,
Part No. 4693-105K
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Instructions For Use
1 . Connect air supply to injection gun.Set the regulator to 30 psi.
2. Load cartridge into the injection gunby grasping the large tube andinserting the small tube into theinjection gun until it snaps in place.The tab between the tubes and thecartridge nut will slide into thegrooved metal plate of the injectiongun.
3. Remove the nut from the end of thecartridge. This will also remove theplug. Separate the plug from the nutand set the nut aside.
4. Assemble the mixing tip and the nutand attach to the end of the car-tridge.
5. Dispense a tablespoon of the adhe-sive by pressing the trigger andobserve that both components of theadhesive are flowing easily and thecolor and consistency is white andsmooth. Release the trigger andpress the red button at the back ofthe handle to stop the flow (the redbutton releases pressure on thepistons that push out the adhesives).
6. Check proper gun operation andadhesive flow by pressing the trigger.The adhesive should flow easily andthe color and consistency should bewhite and smooth. Release thetrigger and press the red buttonbehind the handle to stop the flow.During injection, if adhesive is flowinginto the Contain-It secondary pipe or
Instructions For PneumaticInjection Gun
Caution: Read Before Using Product
• ALWAYS WEAR SAFETY GLASSESWHEN OPERATING DISPENSER.
• READ INSTRUCTIONS ONCARTRIDGE DISPENSER.
• ALWAYS AIM DISPENSER ATPARTS, NEVER AT PEOPLE.
• DO NOT EXCEED 73 PSI IN-BOUND AIR PRESSURE.
out of the seams of the Contain-Ittongue and groove system, back offthe pressure about 5 psi at a timeuntil the situation improves.
7. When finished or when the cartridgeis empty, press the red button on theback of the injection gun handle.This will retract the pistons.
8. To remove the cartridge, press theblack button on the bottom of thecartridge housing. Grasp the largetube and remove the cartridge fromthe injection gun.
9. Store partial cartridges with a usedtip in place. When reusing a car-tridge, the mixing tip must be re-placed.
Instructions For ManualInjection Gun
Caution: Read Before Using Product
• ALWAYS WEAR SAFETY GLASSESWHEN OPERATING DISPENSER.
• READ INSTRUCTIONS ONCARTRIDGE DISPENSER.
• ALWAYS AIM DISPENSER ATPARTS, NEVER AT PEOPLE.
Instructions For Use
1 . Push the rear lever forward and pullback on the plunger located at theback end of the gun as far as it willallow.
2. Load cartridge into the injection gunby grasping the large tube and in-serting the small tube into the injec-tion gun until it snaps in place. Thetab between the tubes and the car-tridge nut will slide into the groovedmetal plate of the injection gun. Atthis time it is necessary to select theratio by turning the indicator, locatedon the side of the gun, to 10:1 .
3. Remove the nut from the end of thecartridge. This will also remove theplug. Separate the plug from the nutand set the nut aside.
4. Assemble the mixing tip and the nutand attach to the end of the car-tridge.
revised 12/2000revised 12/2000revised 12/2000revised 12/2000revised 12/2000
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‡ Contain-It
Use of Two Part Adhesive
It is very important that prior to use, theadhesive be brought up or cooled downto 73°F (23°C). At this temperature, theadhesive has its best flow viscosity andthe cure cycle is promoted. Above 80°F(27°C) the flow viscosity turns thin. Youmay have to reduce the pressure of theinjection gun to adjust for the easier flowor better keep it in an air-conditionedroom until use.
To cure at low temperatures, a heatblanket is available from Bylin HeatingSystems of El Dorado Hills, CA. Forinformation call (916) 933-6666 andrefer to BHS Part No. HTB-6505). Thefollowing table provides guidelines forambient temperature conditions versuscure times.
Injection of Split Pipe
1 . Always inject split pipe first. Insertthe mixing tip into the injection portclosest to the fitting. The adhesiveshould flow easily through theadhesive channel. When theadhesive fills the crossover hole,close the valve.
2. Repeat Step #1 for the other side ofthe split pipe.
3. Repeat Step #1 for both sides of theother end of the pipe.
4. Move along the pipe to the nextinjection port and inject adhesiveuntil it fills the bonding channel one-half the distance to the next injec-tion port.
5. Repeat Step #4 until the channels onboth sides of the pipe are completelyfilled with adhesive.
Cold Weather Instructions
Injection of Split Fittings
1 . Insert the mixing tip into a pre-drilledinjection port around the fittingsocket and open the valve handle.Allow the adhesive to flow until itreaches one-half the distance to thenext injection port before closing thevalve. Continue until the bondingchannel is completely filled withadhesive.
2. All split fittings except the standardcouplings have additional injectionports in the flange area. Aftercompletely filling the bondingchannels along the fittings sock-ets, insert the mixing tip into theinjection port in the flange areaand completely fill the flangearea with adhesive.
Note: If work is beingdone at temperatures below50°F (10°C), the adhesiveshould be brought up to73°F (23°C) to insure the bestpossible flow viscosity and topromote the chemicalreaction necessary for bondstrength. It may be necessaryto use a hot box to achieveand maintain the 73°F(23°C) temperature.
*Note: Before pressuretesting, check the adhesive atthe last of the injection portsto be injected in order toinsure that the adhesivehas cured. If the adhesive issoft, lengthen the cure timeuntil it hardens.
5. Adhesive flow will begin after pump-ing the gun trigger several times.Dispense a tablespoon of the adhe-sive. The adhesive should flow easilyand the color and consistency shouldbe white and smooth. Push the rearlever to stopadhesive run-on.
6. When finished, push the rear lever,pull back on the plunger and removethe adhesive cartridge.
7. Store partial cartridges with a usedtip in place. When reusing a car-tridge, the mixing tip must be re-placed.
Cure Time with Adhesive at 73°F (23°C)
Ambient Temperature Cure Time (approx.)*
73°F (23°C) (Plus) 6 hours30°F (0°C) 18 hoursBelow 30°F (0°C) Elevate joint and split pipe temperature
above 30°F via heat blankets or hot airheater.
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9.12 ¬ ‡
The Long Turn Tee Wyes listed are theonly ones that will fit inside Contain-Itfittings. If other Long Turn Tee Wyes orcombinations are required, they must beassembled from Wyes and 1/8 Bends.The following diagram and chart giveguidance on the assembly of primaryand Contain-It drainage combinations.The Contain-It pipe that is twice thesocket depth of the fittings. The primaryWye and 1/8 Bend require a longersection of pipe. The chart lists theprimary pipe lengths required for variousconfigurations.
Injection molded drainage patternswhich are available for Contain-It andprimary drainage systems minimize theneed for fabricated fittings. This off-the-shelf capability improves availability andspeeds construction. In addition, flowcharacteristics are improved with injec-tion molded primary drainage fittings.
However, due to differences in layinglengths, only certain primary fittings willfit inside similar Contain-It configurations.The chart below indicates which GeorgeFischer drainage patterns fit inside splitContain-It fittings.
Combination Contain-It Wye and 1/8 bends
George Fischer Contain-ItDrainage Patterns
11/2” and 2” Straight and ReducingSanitary Tees
11/2” Long Turn Tee Wye
4” Tee (4601-040)
11/2” and 2” Wye 4” Wye (4683-040)
11/2”, 2” and 3” Straight andReducing Sanitary Tees
11/2” and 2” Long Turn Tee Wye6” Tee (4601-060)
11/2”, 2” and 3” Straight andReducing Wyes
6” Wye (4683-060)
Installation of Drainage Patterns*
4” 1/2 3.520
3/4 3.9006” 1 4.270
11/4 4.65611/2 5.032
Containment of FlangedSystems
Research and Development hasdetermined which size primaryflanged systems will fit inside Con-tain-It. The chart below will be veryhelpful when recommending oursystem for this application. Customcentralizers will be necessary. Callfor availablity and price.
Contain-It Size Primary PipeNominal Diameter
Flange OD
Installation of One PieceFittings
One piece Contain-It PVC fittings are notdesigned for injection. To install, simplyapply a bead of adhesive to the pipeend and approximately 1” inside thefittings socket and join by inserting thepipe.
*Note: For installation of4” Fuseal, please contactGeorge Fischer Sloane.
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‡ Contain-ItCombination Contain-It Wye and 1/8 bends
Contain-It is assembledsocket to socket with a shortpiece of pipe. The primary isjoined with a short piece ofpipe, defined as “L” in thechart.
George Fischer “L” Primary Contain-ItDrainage Patterns Pipe Length Combination
1/8 Bend combined with:
2” Wye 6”
2” x 2” x 11/2” Wye 63/4”
11/2” Wye 71/2”
4” Wye + 1/8 Bend(socket to socket)(4683-040 + 4617-040)4” length of 4” pipe
1/8 Bend combined with:
3” Wye 9”
3” x 3” x 2” Wye 101/4”
2” Wye 101/2”
2” x 2” x 11/2” Wye 113/4”
11/2” Wye 121/4”
6” Wye + 1/8 Bend(socket to socket)(4683-060 + 4617-060)51/2” length of 6” pipe
L
Asssembly and Injection Time Per Fitting
Part Number Time
4” Contain-It Tee 4601-040 3 minutes4” Contain-It Coupling 4629-040 2 minutes6” Contain-It Tee 4601-060 41/2 minutes6” Contain-It Coupling 4629-060 21/2 minutes
The following two charts (shown at right)show the time required to inject adhesiveinto split pipe and fittings (at 60 psiinject pressure with the Pneumatic Gun).
Installation Time Estimate
To provide a guide for estimatingContain-it installations, the followingassembly and adhesive injection timesare provided.
4” Split Pipe and Fittings
Part Time
4” Split Pipe 44 seconds per linear foot4” Split Fitting 30 seconds per socket4” Split Tee (3 sockets) 11/2 minutes
6” Split Pipe and Fittings
6” Split Pipe 1 minute per linear foot6” Split Fitting 80 seconds per socket6” Split Tee (3 sockets) 4 minutes
Part Time
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9.14 ¬ ‡
Fittings
Quantity of 4” Tees and Wyes x 3 =
Quantity of 4” Fittings x 2 =(other than tees and wyes)
/14 =
Quantity of 6” Tees and Wyes x 3 =
Quantity of 6” Fittings x 2 =(other than tees and wyes)
/10 = (+)
Split Pipe
Feet 4” Split Pipe/20 = (+)(1 cartridge will fill 20 ft., both sides)
Feet 6” Split Pipe/10 = (+)(1 cartridge will fill 10 ft., both sides)
TOTAL CARTRIDGES
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
Contain-It Cartridge Fittings/Pipe # of Sockets/Tube
1 cartridge 4” fittings 14
1 cartridge 6” fittings 10
1 cartridge 4” pipe 20 ft. length, both sides
1 cartridge 6” pipe 10 ft. length, both sides
Adhesive Requirements
Adhesive Requirements Calculation
This table is designed to assist in the accurate determination of the number ofadhesive cartridges required for a specific project.
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‡ Contain-It
The change in length of PVC Contain-Itpipe with variation should always beconsidered when installing pipe lines,and provisions should be made to
Length of Run (ft.)∆T(°F)
10’ 20’ 30’ 40’ 50’ 60’ 70’ 80’ 90’ 100’
30 .11” .22” .32” .43” .54” .65” .76” .86” .97” 1 .08”
40 .14” .29” .43” .58” .72” .86” 1 .01” 1 .15” 1 .30” 1 .44”
50 .18” .36” .54” .72” .90” 1 .08” 1 .26” 1 .40” 1 .62” 1 .80”
60 .22” .43” .65” .86” 1 .08” 1 .30” 1 .51” 1 .73” 1 .94” 2.16”
70 .25” .50” .76” 1 .01” 1 .26” 1 .51” 1 .76” 2.02” 2.27” 2.52”
80 .29” .58” .86” 1 .15” 1 .44” 1 .73” 2.02” 2.30” 2.59” 2.88”
90 .32” .65” .97” 1 .30” 1 .62” 1 .94” 2.27” 2.59” 2.92” 3.24”
100 .36” .72” 1 .03” 1 .44” 1 .80” 2.16” 2.52” 2.88” 3.24” 3.60”
Thermal Expansion ∆L (in.) — PVC
Example:Highest temp. expected - 120°FLowest temp. expected - 50°F
Total Change (∆T) - 70°F
Length of run — 40 feet
From 70°F row, read 1 .01inches length change (∆L)
Note: Table is based on:∆L = 12eL(∆T)
Where:e = Coefficient of
Thermal Expansion3.0 x 10-5 in /in. °F
L = Length of Run∆T= Temperature Change
Depending on the piping material usedin the primary and secondary and theirmaterial properties (modules of elasticity,coefficient of expansion and allowablestress), many different expansion situa-tions may be encountered. Otherconsiderations should be: installationtemperature versus primary operatingtemperatures versus secondary operat-ing temperatures. There are severalmethods available for expansion andcontraction compensation:
1 . Expansion joints can be used in thesecondary piping, allowing it tofloat with the primary system, creat-ing a stress-free system.
2. Stress transfer disks may be placedbetween the primary and secondarypiping, transferring thermally in-duced stresses incrementally.
3. Larger elbows in the secondarypiping at changes in direction canbe used to provide extra internalroom.
In order to avoid excessive pipingexpansion that causes interferencebetween the process and the contain-ment piping, piping leg lengths shall belimited to size 4”/2” - 50 feet, and size6”/4” - 45 feet (inner and outer pipetemperatures @ 125°F). Anything overthese lengths will require expansion orabsorption devices.
compensate for this change in length.The following table has been preparedto assist you in determining this expan-sion.
Thermal Expansion Data
Caution:
Expansion and contraction of the carrieror Contain-It piping can cause a failureof the containment protection system. Itis important to adequately compensatefor thermally induced expansion andcontraction by the use of properlylocated offsets and/or expansion joints.The annular space must be considered indetermining if adequate clearance existsfor any carrier movement.
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Underground pipes are subjected toexternal loads caused by the weight ofthe backfill material and by loadsapplied at the surface of the fill. Thesecan range from static to dynamic loads.
Static loads comprise the weight of thesoil above the top of the pipe and anyadditional material that might bestacked above ground. An importantpoint is that the load on a flexible pipewill be less than on a rigid pipe buried inthe same manner. That is because the
Soil Load and Pipe Resistance for Thermoplastic Pipe — PVC Contain-It
H 20 Wheel Loads for VariousDepths of Pipe (lb./ft.)Pipe
Size2 ft. 4ft. 6ft. 8ft. 10ft.
4” 574 154 72 42 276” 837 224 106 61 40
Note: H 20 wheel load is 16,000 lb./wheel
Live Loads for Buried Pipe, lb./ft.
Nom.Size
Wc´ = Load Resistance of Pipe(lb./ft.)
Solid Pipe Split Pipe
E´ = 200 E´ = 700 E´ = 200 E´ = 700
H(ft.)
Wc = Soil Loads at VariousTrench Widths at Top of Pipe(lb./ft.)
2 ft. 3 ft. 4 ft. 5 ft.
10203040
10203040
252 297 324 360
328 432 540 551
342 493 603 743
— 506 639 754
371 437 477 530
484 636 742 812
503 725 888 1093
— 745 941 1110
4 426 975 352 901
6 584 1392 514 1323
Trench Widths for PVC
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W = Trench width attop of pipe
Soil Load
flexible conduit transfers part of the loadto the surrounding soil and not thereverse. Soil loads are minimal withnarrow trenches until a pipe depth of 10feet is attained.
Dynamic loads are loads due to movingvehicles such as trucks, trains and otherheavy equipment. For shallow burialconditions, live loads should be consid-ered and added to static loads, but atdepths greater than 10 feet, live loadshave very little effect.
Note 1: Figures arecalculated from minimum soilresistance values(E´ = 200 psi foruncompacted sandy clayloam) and compacted soil (E´= 700 for side-fill soil that iscompacted to 90% or moreof Proctor Density for distanceof two pipe diameters oneach side of the pipe). If Wc´is less than Wc at a giventrench depth and width, thensoil compaction will benecessary.
Note 2: These are soilloads only and do notinclude live loads.
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‡ Contain-It
Support Spacing
When Contain-It piping is installedabove ground, it must be properlysupported to avoid unnecessary stressesand excessive sagging. On horizontalruns, hangers or supports should be usedat approximately the spacing given.
Note: additional support is required astemperature increases.
The following tables were calcuated for4” and 6” Contain-It with thermoplasticpipe (PVC, CPVC, PP) as the carrier, fullof 1 .0 specific gravity liquid.
PVC, CPVC, PP CarrierPipe Sizes (inch)
Temp°F(°C) 1/2
3/4 1 11/4 11/2 2
60 (15) 10.0 9.8 9.5 9.1 8.8 8.3
100 (36) 9.5 9.3 9.0 8.6 8.4 7.9
140 (57) 9.1 8.9 8.6 8.2 8.0 7.5
Note: Table based on .100 in. deflec-tion of a uniformly loaded,continuous beam.
4” Contain-It Support Spacing (ft.)
PVC, CPVC, PP Carrier Pipe Sizes (inch)Temp°F (°C)
1/23/4 1 11/4 11/2 2 3 4
60 (15) 12.7 12.6 12.4 12.0 11 .8 11 .3 10.3 9.4
100 (36) 12.1 11 .9 11 .7 11 .4 11 .2 10.8 9.7 9.0
140 (57) 11 .5 11 .4 11 .2 10.9 10.7 10.2 9.3 8.5
Note: Table based on .100 in. deflection of a uniformly loaded, continuous beam.
6” Contain-It Support Spacing (ft.)
Contain-It Size (inch)Temp
4” 6”
60 (15) 10.6 13.1
100 (36) 10.0 12.4
140 (57) 9.5 11 .8
Support Spacing (ft.)Steel, Fiberglass SupportSpacing (ft.)
If the carrier piping is stiffer than thermo-plastic piping (steel, fiberglass, etc.), usethe following table for hanger supportspacing. Place centralizers only at pipesupports. No centralizers are requiredbetween pipe supports.
°F (°C)
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60 (15) 41/4 41/2 5 51/2 53/4 61/4 71/2 81/4
100 (36) 4 41/4 43/4 51/4 51/2 6 7 73/4
140 (57) 33/4 4 41/2 5 51/4 53/4 63/4 71/2
Centralizer Spacing
When thermoplastic piping is used asthe carrier system, proper centralizerspacing is necessary to prevent overstressing or excessive sagging. Toproperly transfer the carrier load to thesupports, centralizers should be centeredon and, if required, positioned betweenthe supports or hangers.
In the case of elbows and tees, onecentralizer is required at the elbow ortee and the next one is spaced in eitherdirection according to the tables.
The following tables are for centralizerspacing when thermoplastic pipe is thecarrier pipe.
Note: Table based on .100 in. deflection of a uniformly loaded, continuous beam.
For centralizer spacing for steel or fiberglass pipe, see table on page 15. Use thesame spacing for buried steel or fiberglass pipe.
Maximum Centralizer Spacing (ft.) for Buried Pipe
Temp°F (°C)
Carrier Pipe Sizes (inch)
1/23/4 1 11/4 11/2 2 3 4
Schedule 40 PVC
Schedule 80 PVC & CPVC
60 (15) 41/2 43/4 51/4 53/4 6 61/2 8 83/4
100 (36) 4 41/2 5 51/2 53/4 61/4 71/2 81/4
140 (57) 33/4 41/4 43/4 51/4 51/4 6 7 8
Schedule 80 PP
60 (15) — — — — 43/4 51/4 61/4 63/4
100 (36) — — — — 43/4 5 6 63/4
140 (57) — — — — 41/2 5 6 61/2
Schedule 40 PPFR — Fuseal
60 (15) 3 3 31/2 — 4 41/4 51/4 51/4
100 (36) 21/2 3 3 — 31/2 4 43/4 51/4
140 (57) 21/4 21/2 23/4 — 31/4 31/2 41/4 41/2
Supports/Hangers
Centralizer
Centralizers Centered on Supports
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‡ Contain-It
Fitting Hydrostatic Airpsi (bar) psi (bar)
4” (with rigidTerm. Fit.) 32 (2.2) 5 (0.3)
6” (with rigidTerm. Fit.) 32 (2.2) 5 (0.3)
FemaleAdapters 5 (0.3) 5 (0.3)
FlexibleAdapters 5 (0.3) 5 (0.3)
Testing
Final inspection should be accomplishedvia low pressure air or hydrostatic test asdefined in the chart below. This chartgives the pressures allowed.
Repair
In the event that an adhesive void isdiscovered, it can be repaired by drillinginto the void with the proper size Coun-terbore Drill Bit and injecting moreadhesive. However, if leaks are discov-ered where no void is visible, the fittingand/or pipe must be removed andreplaced.
Note: When flexible adapters orfemale adapters are included, theentire system is rated at 5 psi (0.3bar), otherwise 32 psi (2.2 bar).
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