1、Designation: C1613 10Standard Specification forPrecast Concrete Grease Interceptor Tanks1This standard is issued under the fixed designation C1613; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number
2、 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 conc
3、rete grease interceptor tanks.1.2 This specification describes precast concrete tanks in-stalled to separate fats, oils, grease, soap scum, and othertypical kitchen wastes associated with the food service indus-try.1.3 The values stated in inch-pound units are to be regardedas standard. The values g
4、iven in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.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 establis
5、h appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A82/A82M Specification for Steel Wire, Plain, for ConcreteReinforcementA184/A184M Specification for Welded Deformed Steel BarMats for Concrete
6、 ReinforcementA185/A185M Specification for Steel Welded Wire Rein-forcement, Plain, for ConcreteA496/A496M Specification for Steel Wire, Deformed, forConcrete ReinforcementA497/A497M Specification for Steel Welded Wire Rein-forcement, Deformed, for ConcreteA615/A615M Specification for Deformed and P
7、lainCarbon-Steel Bars for Concrete ReinforcementA706/A706M Specification for Low-Alloy Steel Deformedand Plain Bars for Concrete ReinforcementC33 Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of Cy-lindrical Concrete SpecimensC94/C94M Specification for Ready-Mixe
8、d ConcreteC125 Terminology Relating to Concrete and Concrete Ag-gregatesC150 Specification for Portland CementC260 Specification for Air-Entraining Admixtures for Con-creteC330 Specification for Lightweight Aggregates for Struc-tural ConcreteC494/C494M Specification for Chemical Admixtures forConcre
9、teC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC685/C685M Specification for Concrete Made by Volumet-ric Batching and Continuous MixingC890 Practice for Minimum Structural Design Loading forMonolithic or Se
10、ctional Precast Concrete Water andWastewater StructuresC923 Specification for Resilient Connectors Between Rein-forced Concrete Manhole Structures, Pipes, and LateralsC990 Specification for Joints for Concrete Pipe, Manholes,and Precast Box Sections Using Preformed Flexible JointSealantsC1116 Specif
11、ication for Fiber-Reinforced Concrete andShotcreteC1602/C1602M Specification for Mixing Water Used in theProduction of Hydraulic Cement Concrete2.2 ACI Standard:3ACI 318 Building Code Requirements for Reinforced Con-crete2.3 IAPMO Documents:4Uniform Plumbing CodeIAPMO PS-80 Grease Interceptors and C
12、larifiers2.4 AASHTO Standard:5Standard Specifications for Highway Bridges1This 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 approved Jan. 1, 2010. Pub
13、lished January 2010. Originallyapproved in 2006. Last previous edition approved in 2009 as C1613 09. DOI:10.1520/C1613-10.2For 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 48333-9094, http:/www.concrete.org.4Available from International Association of Plumbing and Mechanical Officials(IAPMO), 5001 E. Philadelphia St., Ontar
15、io, CA 91761.5Available from American Association of State Highway and TransportationOfficials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,http:/www.transportation.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United St
16、ates.3. Terminology3.1 For definitions of terms relating to concrete, see Termi-nology C125.3.2 Definitions of Terms Specific to This Standard:3.2.1 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
17、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 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 dow
18、n below theseparated layer and prevent floating layer of fats, oils, or greasefrom exiting the tank through the outlet.3.2.4 grease interceptor 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 ki
19、tchen or food serviceestablishment containing no sanitary discharges from toilets,urinals and other similar fixtures are received and retained, andfrom which the liquid effluent, which is comparatively freefrom fats, oils, greases and settleable and/or floating solids, isthen discharged to a public
20、sewer, septic or other approvedtreatment system.3.2.6 inspection opening, na hole in the top slab used forthe purpose of observing conditions inside 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 u
21、sedbut 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 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
22、to the oppositeside.3.2.11 tank dividing wall, na partition across the width ofthe tank that extends partially between the top and bottomintended 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
23、 shall include the following information inbidding documents and on the purchase order, as applicable tothe units being ordered:4.1.1 Reference 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 r
24、equirements including moderatesulfate-resisting cement, Specification C150 Type II, or highlysulfate-resisting cement, Specification C150, Type V. If thepurchaser does not stipulate, the manufacturer shall use anycement meeting the requirements of Specification C150 orC595 (Type IS or Type IP only).
25、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, liveload 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 o
26、wner at the time ofordering.4.1.8 Manufacturer is permitted to require testing at the jobsite prior to backfill in accordance with section 9.1.2.5. Materials and Manufacture5.1 CementPortland cement shall conform to the require-ments of Specification C150 or shall be portland blast-furnaceslag cemen
27、t (Type IS) or portland-pozzolan cement (Type IP)conforming to the requirements of Specification C595.5.2 AggregatesAggregates shall conform to SpecificationC33 and lightweight aggregates shall conform to SpecificationC330, except that the requirements for grading shall not apply.5.3 WaterWater used
28、 in mixing concrete shall meet therequirements of Specification C1602/C1602M.5.4 AdmixturesAdmixtures, when used, shall conform toSpecification C494/C494M, Specification C618, or Specifica-tion C260 and shall not be detrimental to other products usedin the concrete.5.5 Steel ReinforcementSteel reinf
29、orcement shall con-form to Specification A82/A82M or A496/A496M for wire;SpecificationA185/A185M orA497/A497M for wire fabric; orSpecification A184/A184M, A615/A615M,orA706/A706Mfor bars.5.5.1 Locating ReinforcementReinforcement shall beplaced in the forms as required by the design.5.5.2 Holding Rei
30、nforcement 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 water
31、shall be proportioned and mixed to produce a homogeneousconcrete meeting the requirements of this specification, and inaccordance with Specification C94/C94M or SpecificationC685/C685M.5.7 FormsThe forms used in manufacture shall be suffi-ciently rigid and accurate to maintain the dimensions of theg
32、rease 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 a
33、re embedded 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 accord
34、ance 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 C39/C39M.5.11 FibersPolypropylene or polyolefin fibers are onlypermitted as a secondary
35、 reinforcing material, at the manufac-turers option, in precast concrete grease interceptor tanks. ForC1613 102the purposes of this standard, secondary reinforcing material isonly used to resist temperature and shrinkage effects. OnlyType III conforming to the requirements of SpecificationC1116 shal
36、l be accepted.5.12 Pipe ConnectionsPipe-to-tank connections shall em-ploy flexible connectors conforming to the requirements ofSpecification C923. Materials for the connectors shall havedemonstrated resistance to the effects of fats, oils, grease, andfluid temperatures of at least 160F (70C).5.13 Se
37、alantsFlexible sealants employed in the manufac-ture or installation of tanks shall conform to SpecificationC990. 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 C890 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 alrea
43、dy 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 structural
44、 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 general
45、ly 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 lo
46、cal 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 appro
47、ved 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:7.3
48、.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 anycombinat
49、ion 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-section
