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ASTM C1613-2008 Standard Specification for Precast Concrete Grease Interceptor Tanks.pdf

1、Designation: C 1613 08Standard Specification forPrecast Concrete Grease Interceptor Tanks1This standard is issued under the fixed designation C 1613; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A numb

2、er in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers design requirements, manufac-turing practices, and performance requirements for monolithicor sectional precast co

3、ncrete grease interceptor tanks.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.3 This standard describes precast concrete tanks in

4、stalledto separate fats, oils, grease, soap scum, and other typicalkitchen wastes associated with the food service industry.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appr

5、o-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A 82/A 82M Specification for Steel Wire, Plain, for Con-crete ReinforcementA 184/A 184M Specification for Welded Deformed SteelBar Mats for Concrete

6、 ReinforcementA 185/A 185M Specification for Steel Welded Wire Rein-forcement, Plain, for ConcreteA 496/A 496M Specification for Steel Wire, Deformed, forConcrete ReinforcementA 497/A 497M Specification for Steel Welded Wire Rein-forcement, Deformed, for ConcreteA 615/A 615M Specification for Deform

7、ed and PlainCarbon-Steel Bars for Concrete ReinforcementA 706/A 706M Specification for Low-Alloy Steel De-formed and Plain Bars for Concrete ReinforcementC33 Specification for Concrete AggregatesC 39/C 39M Test Method for Compressive Strength of Cy-lindrical Concrete SpecimensC 94/C 94M Specificatio

8、n for Ready-Mixed ConcreteC 125 Terminology Relating to Concrete and ConcreteAggregatesC 150 Specification for Portland CementC 260 Specification for Air-Entraining Admixtures for Con-creteC 330 Specification for Lightweight Aggregates for Struc-tural ConcreteC 494/C 494M Specification for Chemical

9、Admixtures forConcreteC 595 Specification for Blended Hydraulic CementsC 618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC 685/C 685M Specification for Concrete Made by Volu-metric Batching and Continuous MixingC 890 Practice for Minimum Structural Design Lo

10、ading forMonolithic or Sectional Precast Concrete Water andWastewater StructuresC 923 Specification for Resilient Connectors Between Re-inforced Concrete Manhole Structures, Pipes, and LateralsC 990 Specification for Joints for Concrete Pipe, Manholes,and Precast Box Sections Using Preformed Flexibl

11、e JointSealantsC 1116 Specification for Fiber-Reinforced Concrete andShotcrete2.2 ACI Standard:3ACI 318 Building Code Requirements for Reinforced Con-crete2.3 IAPMO Documents:4Uniform Plumbing CodeIAPMO PS-80 Grease Interceptors and Clarifiers2.4 AASHTO Standard:5Standard Specifications for Highway

12、Bridges3. Terminology3.1 For definitions of terms relating to concrete, see Termi-nology C 125.1This specification is under the jurisdiction ofASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.30 on Waterand Wastewater Containers.Current edition appr

13、oved Aug. 1, 2008. Published August 2008. Originallyapproved in 2006. Last previous edition approved in 2007 as C 1613 07.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, ref

14、er to the standards Document Summary page onthe ASTM website.3Available from American Concrete Institute (ACI), P.O. Box 9094, FarmingtonHills, MI 48333.4Available from International Association of Plumbing and Mechanical Officials(IAPMO), 5001 E. Philadelphia St., Ontario, CA 91761.5Available from

15、American Association of State Highway and TransportationOfficials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2 Definitions of Terms Specific to This Standard:3.

16、2.1 access opening, na hole in the top slab used to gainaccess to the inside of the tank for the purpose of cleaning andremoving grease, floating scum and sludge without a personactually having to enter the tank.3.2.2 air scum volume, nthe number of cubic inches(centimeters) in the space between the

17、 liquid surface and theunderside of the top slab.3.2.3 baffle, na device, such as a sanitary tee or otherdeflector, used to direct the flow of influent down below theseparated layer or prevent the floating layer of fats, oil, orgrease from exiting the tank through the outlet.3.2.4 grease interceptor

18、 capacity, nthe volume of liquidthe tank is designed to hold.3.2.5 grease interceptor tank system, na single tank orseries of tanks in which wastes from a kitchen or food serviceestablishment containing no sanitary discharges from toilets,urinals and other similar fixtures are received and retained,

19、 andfrom which the liquid effluent, which is comparatively freefrom fats, oils, greases and settleable and/or floating solids, isthen discharged to a public sewer, septic or other approvedtreatment system.3.2.6 inspection opening, na hole in the top slab used forthe purpose of observing conditions i

20、nside the tank.3.2.7 joint, na physical separation where two pieces ofprecast concrete are in contact.3.2.8 non-sealed joint, na joint where sealant is not usedbut where a machined fit will minimize the movement of liquidfrom one side of a precast concrete wall to the opposite side.3.2.9 owner, nis

21、by definition end user, customer, orpurchaser.3.2.10 sealed joint, na joint that is sealed to prevent liquidpassing from one side of a precast concrete wall to the oppositeside.3.2.11 tank dividing wall, na partition across the width ofthe tank that extends partially between the top and bottomintend

22、ed to deflect influent downward and increase the lengthof the flow path of the liquid as it travels through the tank.4. Ordering Information4.1 The purchaser shall include the following information inbidding documents and on the purchase order, as applicable tothe units being ordered:4.1.1 Reference

23、 to this specification, and date of issue.4.1.2 Quantity, that is, number of units ordered.4.1.3 Capacity of tank in gallons or litres.4.1.4 Special cement requirements including moderatesulfate-resisting cement, Specification C 150 Type II, or highlysulfate-resisting cement, Specification C 150, Ty

24、pe V. If thepurchaser does not stipulate, the manufacturer shall use anycement meeting the requirements of Specification C 150 orC 595 (Type IS or Type IP only).4.1.5 Acceptance will be based on a review of the calcula-tions or on proof tests.4.1.6 Design requirements such as depth of earth cover, l

25、iveload applied at the surface, and ground water level.4.1.7 Testing for water leakage shall not be required at thejob site unless specifically required by the owner at the time ofordering.4.1.8 Manufacturer is permitted to require testing at the jobsite prior to backfill in accordance with section

26、9.1.2.5. Materials and Manufacture5.1 CementPortland cement shall conform to the require-ments of Specification C 150 or shall be portland blast-furnaceslag cement (Type IS) or portland-pozzolan cement (Type IP)conforming to the requirements of Specification C 595.5.2 AggregatesAggregates shall conf

27、orm to SpecificationC33and lightweight aggregates shall conform to SpecificationC 330, except that the requirements for grading shall not apply.5.3 WaterWater used in mixing concrete shall be cleanand free of deleterious amounts of oils, acids, alkalies, salts,organic materials, or other substances

28、that are incompatiblewith concrete and/or steel.5.4 AdmixturesAdmixtures, when used, shall conform toSpecification C 494/C 494M, Specification C 618, or Specifi-cation C 260 and shall not be detrimental to other productsused in the concrete.5.5 Steel ReinforcementSteel reinforcement shall con-form t

29、o Specification A 82/A 82M or A 496/A 496M for wire;Specification A 185/A 185M or A 497/A 497M for wire fabric;or Specification A 184/A 184M, A 615/A 615M,orA 706/A 706M for bars.5.5.1 Locating ReinforcementReinforcement shall beplaced in the forms as required by the design.5.5.2 Holding Reinforceme

30、nt in Position During PouringPlacementReinforcement must be securely tied in place tomaintain position during concrete placing operations. Chairs,bolsters, braces, and spacers in contact with forms shall have acorrosion-resistant surface.5.6 Concrete MixturesThe aggregates, cement, and watershall be

31、 proportioned and mixed to produce a homogeneousconcrete meeting the requirements of this specification, and inaccordance with Specification C 94/C 94M or SpecificationC 685/C 685M.5.7 FormsThe forms used in manufacture shall be suffi-ciently rigid and accurate to maintain the dimensions of thegreas

32、e interceptor tank within the stated tolerances. All castingsurfaces shall be of smooth nonporous material. Form releasingagents used shall not be injurious to the concrete.5.8 Concrete PlacementConcrete shall be placed in theforms and consolidated such that all reinforcement steel andfixtures are e

33、mbedded without segregation of materials orvoids in the concrete.5.9 CuringThe precast concrete sections shall be cured byany method or combination of methods that will develop thespecified compressive strength at 28 days or less.5.10 Concrete QualityThe quality of the concrete shall bein accordance

34、 with the chapter on concrete quality in ACI 318,except for frequency of tests, which shall be specified by thepurchaser. Concrete compressive strength tests shall be con-ducted in accordance with Test Method C 39/C 39M.5.11 FibersPolypropylene or polyolefin fibers are onlypermitted as a secondary r

35、einforcing material, at the manufac-turers option, in precast concrete grease interceptor tanks. Forthe purposes of this standard, secondary reinforcing material isonly used to resist temperature and shrinkage effects. OnlyC1613082Type III conforming to the requirements of SpecificationC 1116 shall

36、be accepted.5.12 Pipe ConnectionsPipe-to-tank connections shall em-ploy flexible connectors conforming to the requirements ofSpecification C 923. Materials for the connectors shall havedemonstrated resistance to the effects of fats, oils, grease, andfluid temperatures of at least 160F (70C).5.13 Sea

37、lantsFlexible sealants employed in the manufac-ture or installation of tanks shall conform to SpecificationC 990. Rigid (mortar) sealing of tank sections is not permitted.6. Structural Design Requirements6.1 Structural design of grease interceptor tanks shall be bycalculation or by performance.6.1.1

38、 Design by calculation shall be completed using theStrength Design Method (ultimate strength theory) or theAlternate Design Method (working stress theory) outlined inACI 318.6.1.2 Design by performance requires the manufacturer todemonstrate that failure will not occur by physically applyingloads to

39、 the product. The load applied shall be 2.2 times thedesign live load or 1.5 times the design dead load, whicheveris greater. Such testing shall be witnessed and certified by aregistered professional engineer.NOTE 1When synthetic fibers are used to replace some or all of thesecondary steel reinforce

40、ment in the grease interceptor, equivalent perfor-mance criteria can be found in section 5.4 of IAPMO PS-80.NOTE 2Vacuum testing may be used to simulate uniform loads. It isnot possible to simulate concentrated loads, such as wheel loads, usingvacuum testing.6.1.3 Tanks shall be designed so that the

41、y will not collapseor rupture when subjected to anticipated earth and hydrostaticpressures when the tanks are either full or empty.6.1.4 At a minimum, loads from Practice C 890 designationA-16 (AASHTO HS20-44) shall be used for design.6.1.5 The live loads imposed at lifting points shall beconsidered

42、 in the design of the grease interceptor tank.6.1.6 Inserts embedded in the concrete (including embeddedlifting devices) shall be designed and used according to allfederal, state, and local regulations.NOTE 3Lift inserts are typically manufactured with an integral factorof safety of 4, which is alre

43、ady accounted for in their rated load.6.2 Concrete StrengthThe minimum compressivestrength (fc) for designs shall be 4000 psi (28 MPa) at 28 daysof age.6.3 Reinforcing Steel PlacementThe concrete cover forreinforcing bars, mats, or fabric shall not be less than 1 in. (25mm).6.4 OpeningsThe structura

44、l design shall take into consid-eration the number, placement, and size of all openings.6.5 Lift EquipmentAll equipment used to handle theprecast concrete tank shall be designed and used according toall federal, state, and local regulations.7. Physical Design Requirements7.1 CapacitySizes are genera

45、lly specified by local regu-lations and they shall supersede the following requirements.When local regulations are not available, grease interceptorcapacity may be determined by use of one of the sizing criteriaprovided in the Appendix.7.2 ShapeGrease interceptor shapes are generally speci-fied by l

46、ocal regulations and they shall supersede the followingrequirements.7.2.1 The air scum volume above the liquid shall be at least12.5 % of the volume of liquid but not less than 9 in. (230 mm)high for entire surface above liquid.7.2.2 Minimum liquid depth shall be 30 in. (760 mm) unlessotherwise appr

47、oved by local regulations or the authority havingjurisdiction.7.2.3 Maximum liquid depth shall be 72 in. (1800 mm)unless otherwise approved or required by local regulations, theauthority having jurisdiction, or the design engineer.7.2.4 Tank length shall be greater that the width.7.3 Compartments:7.

48、3.1 Grease interceptor tank systems shall include singleand multi-compartment units unless otherwise approved bylocal codes or jurisdiction. In multi-compartment tanks thedividing walls shall be monolithically cast or placed second-arily utilizing a non-sealed joint with the tank body, or anycombina

49、tion thereof.7.3.2 Multiple units installed in series are acceptable.7.3.3 The transfer port between compartments shall be sizedto maintain a low velocity as liquid moves between compart-ments. A minimum of 50 in.2(320 cm2) shall be used wherelocal codes do not specify otherwise.7.3.4 The transfer port between compartments shall be inthe middle 25 % of the distance from the bottom of the tank tothe water line.7.3.5 No tee, outlet filter unit, or tank-dividing wall shallextend to the interior roof without providing for venting. Thecross-sectional

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