ASTM_C_890_-_13.pdf

Designation:C89013Standard Practice forMinimum Structural Design Loading for Monolithic orSectional Precast Concrete Water and WastewaterStructures1This standard is issued under the fixed designation C890;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes the minimum loads to be appliedwhen designing monolithic or sectional precast concrete waterand wastewater structures with the exception of concrete pipe,box culverts,utility structures,and material covered in Speci-fication C478.1.2 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 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 appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C478 Specification for Circular Precast Reinforced ConcreteManhole Sections2.2 AASHTO Standard:Standard Specifications for Highway Bridges,16th Edition32.3 ACI Standard:ACI 318 Building Code Requirements for Reinforced Con-crete43.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 above ground structuresall structures with their baseat or above ground.3.1.2 bearing loadsthe foundation pressure reaction to allother loads acting on the structure.3.1.3 below ground structuresall structures other thanthose with their base at or above ground.3.1.4 dead loadsthe mass of the structure and all perma-nent loads imposed on the structure.3.1.5 equipment loadsloads induced into the structure byequipment installed on mounting devices cast into the struc-ture.3.1.6 hydrostatic loadsall pressures due to the weight ofwater or other liquids.3.1.7 lateral earth loadsthe lateral pressure due to theeffective weight of adjacent earth backfill.3.1.8 lifting loadsthe forces induced into the structureduring handling at the precast plant and the construction site.3.1.9 surcharge loadsthe lateral pressure due to verticalloads superimposed on the adjacent earth backfill.3.1.10 traffc loadsall loads superimposed on the structureor adjacent earth backfill due to vehicles or pedestrians.3.1.11 water and wastewater structuressolar heatingreservoirs,septic tanks,cisterns,holding tanks,leaching tanks,extended aeration tanks,wet wells,pumping stations,greasetraps,distribution boxes,oil-water separators,treatment plants,manure pits,catch basins,drop inlets,and similar structures.4.Significance and Use4.1 This practice is intended to standardize the minimumloads to be used to structurally design a precast product.4.2 The user is cautioned that he must properly correlate theanticipated field conditions and requirements with the designloads.Field conditions may dictate loads greater than mini-mum.1This practice is under the jurisdiction of ASTM Committee C27 on PrecastConcrete Products and is the direct responsibility of Subcommittee C27.30 on Waterand Wastewater Containers.Current edition approved Jan.15,2013.Published February 2013.Originallyapproved in 1978.Last previous edition approved in 2012 as C890 12.DOI:10.1520/C0890-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American Association of State Highway and TransportationOfficials(AASHTO),444 N.Capitol St.,NW,Suite 249,Washington,DC 20001,http:/www.transportation.org.4Available from American Concrete Institute(ACI),P.O.Box 9094,FarmingtonHills,MI 48333-9094,http:/www.concrete.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Design Loads5.1 Dead Loads:5.1.1 Permanent vertical loads typically include the weightof the road bed,walkways,earth backfill,and access openingcovers.5.1.2 Recommended unit weights of materials for design areshown in Table 1.5.2 Traffc Loads:5.2.1 The vehicle and pedestrian loadings are shown inTable 2.5.2.2 The arrangement and spacing of vehicle wheels areshown in Fig.1 and Fig.2.5.2.3 Distribution of Wheel Loads through Earth Fills:5.2.3.1 For structures where vehicle wheels contact the topsurface of the structure,the vehicle wheel loads will bedistributed over an area as shown in Fig.3.The loaded areawill be:A 5 W 3L(1)where:A=wheel load area,ft2(m2),W=wheel width,ft(m),andL=wheel length,ft(m).5.2.3.2 For below ground structures where backfill separatesthe vehicle wheels and the top surface of the struct