Critical Study of Sheet Molded Compound (SMC) panel elevated water tank of 25,000 liters capacity in

International Research Journal of Engineering and Technology (IRJET) e-ISSN:2395-0056

Volume: 09 Issue: 11 | Nov 2022 www.irjet.net p-ISSN:2395-0072

Critical Study

of

Sheet

Molded

Compound (SMC) panel elevated water tank of 25,000 liters capacity in various wind and seismic zones.

Dr. S. B. Borghate

1 ,

Mayank Kale2

1Associate Professor, Dept. of Applied Mechanics, VNIT Nagpur, 440010.

2M. Tech student, Dept. of Applied Mechanics, VNIT Nagpur, 440010. ***

Abstract - Thisstudy analyzed and designed Sheet Molding Compound (SMC) Panel water tank having capacity 25,000 liters and height of staging 6 meters in various wind and seismiczoneasperIndianStandards.Watertankismodelled andanalyzedonSAP2000softwarebasedonFEM.Windload onstructureiscalculatedasperIS875-Part3,staticanalysis isdonebecausethestructurehasfrequencygreaterthan1Hz. EarthquakeloadonthestructureiscalculatedasperIS1893Part 1 & Part 2, the system is considered as Single Degree of Freedom System. The SMC Panel Water tank is considered as mass body placed on steel staging. This structure is analyzed fordifferentloadcombinationsasperIS875-Part5.Structure isdesignedasperIS800-2007.Thelateralloadsactingonthe structure in various wind and seismic zones are compared.

Key Words: SMCPanelWaterTank,SteelStaging,Analysis andDesignofWaterTank,SAP2000.

1. INTRODUCTION

Sheetmoldingcompound(SMC)orsheetmoldingcomposite isareadytomoldglass-fiberreinforcedpolyestermaterial primarily used in compression molding. The sheet is providedinrollsweighingupto1000kg.Alternatively,the resin and related materials may be mixed on site when a producerwantsgreatercontroloverthechemistryandfiller. SMC is both a process and reinforced composite material. This is manufactured by dispersing long strands (usually >1”)ofchoppedfiber,commonlyglassfibersorcarbonfibers onabathofthermosetresin(typicallypolyesterresin,vinyl esterresinorepoxyresin).ThelongerfibersinSMCresultin better strength properties than standard bulk molding compound (BMC) products. Typical applications include demandingelectricalapplications,corrosionresistantneeds, structuralcomponentsatlowcost,automotive,andtransit.

SAP2000 meansStructuralAnalysisProgram2000.SAP2000 is a structural analysis and design software produced by Computer and Structures, Incorporated (CSI), a structural andearthquakeengineeringcompany.

TypesofWaterTank

BasedonPosition:

Basedonthepositionoftanksteelwatertankisdivided into3typesundergroundtank,groundrestingtankand overheadtank.

BasedonShape:

Based on Shape of tank its types are circular tank, rectangulartank,squaretankandsphericaltank.

Objective of study

Presentstudywillbecarriedoutforfollowingobjectives:

To make a study about guidelines for the design of liquid retainingstructureaccordingtoISCode.

Tomakeastudyabouttheanalysisanddesignofelevated steel watertank of various capacitiesinvarious windand seismiczone.

Tostudythedynamicbehaviorofelevatedsteelwatertank underwindloadandearthquakeload.

Tostudythesloshingeffect.

To study the effect of shape and size of water tank on staging.

2.LITERATURE REVIEW

Forthisjobvariousliteraturehavebeenstudiedwhichwill be helpful in orienting present work.The relatedliterature reviewismentionedbelow:

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Fig -1:SMCPanelTank.

International Research Journal of Engineering and Technology (IRJET) e-ISSN:2395-0056

Volume: 09 Issue: 11 | Nov 2022 www.irjet.net p-ISSN:2395-0072

El Damatty et al., (1998) Conical steel vessels, having an higher cylindrical segment and supported by using a bolstered concrete shaft, are becoming broadly used for water containment in elevated tanks. However, the contemporarycodesofpracticeforwaterstructuresinNorth America do no longer consist of any rational method for designingsuchvessels.Inthislookat,asimpleandrational design system that considers instability, yielding, large deformations,geometricimperfections,andresidualstresses isdevelopedforthosehydrostaticallyloadedmetallicvessels.

Tom H. Hale (2004) This paper describes the seismic evaluationandlayoutstrategiesusedfortheseismicimprove of an present 3,000,000 gallon (11,355,000 liters) steel improvedwatertanksupportedbyametallicframeworkin Sacramento, California. The preliminary seismic upgrade designconsistedofabaseisolationgadget.Thefinalseismic improvedesigncarriesapassivepowerdissipationmachine inside the braces of the framework to create a friction dampedbracedframe.

Norris et al.,(2014) Elevated water tanks are normally placed at better elevations within a particular geographic place.Thelocationsandtopofthosestructuresoftenmakes them ideal for siting wi-fi and mobile communications antennas.Theeffectofthisexerciseonthelong-timeperiod serviceabilityoverallperformanceoftheprimaryshapeisn't cleanandwill beanimportantattentiondeservingfurther evaluation.

Jena et al., (2016) A meshfree molecule approach, to be specific moving molecule semi-certain (MPS) technique is utilizedtoexaminethesloshingconductinatosomedegree filledfluidcompartment.Thelegitimacyofthemathematical model is checked by looking at the sloshing movement in tanks going through sinusoidal and seismic tremor excitations with the distributed outcomes. An exhaustive investigation of seismically invigorated vicious sloshing movementandwaveinfluenceutilizingamoleculetechnique, notrevealedinopenwriting,weretakenupinthecurrent review.

3. METHODOLOGY

3.1Mathematical Modelling.

The SMC Panel Water tank is modelled as mass acting on bearers. The load is applied as uniformly distributed load. Thedimensionofthetankis3mx3mx3m.Thedimension of the tank is given by SMC Panel Company. The steel Isectionisusedasbearerandlowerbeam. Forcolumnsand bracings angle section is used. The joints assigned is fixed joints as it assumed to be rigid connections. The plan and elevationisshowninFigure2.

4.0 4.0

Fig -2:ElevationandPlanofTank.

Fig -3:MathematicalModellingofSMCPanelTank

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3.2 Governing Lateral Load Comparison.

Chart -4:ComparisonofLateralloadinSeismiczoneV

Chart -1: ComparisonofLateralloadinSeismiczoneII

Chart -2:ComparisonofLateralloadinSeismiczoneIII

TheloadcombinationsareassignedasperIS875. 1. 1.2(DL-EQX) 2. 1.2(DL+EQY) 3. 1.2(DL-EQY) 4. 1.2(DL+EQX) 5. 1.5(DL-EQX) 6. 1.5(DL+EQY) 7. 1.5(DL+EQY) 8. 0.9DL-1.5EQX 9. 0.9DL+1.5EQY 10. 0.9DL-1.5EQY 11. 0.9DL+1.5EQX 12. 1.2(DL+WLX) 13. 1.2(DL+WLY) 14. 1.2DL+0.6WLX 15. 1.2DL-0.6WLX 16. 1.5(DL+WLX) 17. 1.5(DL+WLY) 18. 0.9DL+1.5WLX 19. 0.9DL+1.5WLY.

Chart -3:ComparisonofLateralloadinSeismiczoneIV

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International Research Journal of Engineering and Technology (IRJET) e-ISSN:2395-0056

Volume: 09 Issue: 11 | Nov 2022 www.irjet.net p-ISSN:2395-0072

3.3 Analysis result of SMC Panel Water Tank

a) Design of Tank for earthquake zone II

ThewatertankisdesignedinSAP2000forearthquakeload with considering wind load of different wind speed. The result of these 6 wind zones are shown in Table 1. Computationalresultsincludebendingmomentsofmembers forallloadcombinations.

Table-1: MaximumMembersAxialLoadsforvariouszones (kN).

Member

Computationalresultsincludebendingmomentsofmembers forallloadcombinations.

Table-3: MaximumMembersAxialLoadsforvariouszones (kN). Member

Wind Zone 1 Vb= 33m/s

2 Vb= 39m/s

3 Vb= 44m/s

4 Vb =47 m/s

5 Vb= 50m/s

6 Vb =55 m/s

Wind Zone 1 Vb =33 m/s

2 Vb =39 m/s

3 Vb =44 m/s

4 Vb =47 m/s

5 Vb =50 m/s

6 Vb =55 m/s

Column -134.5 -134.4 -134.4 -134.4 -138.7 -139.2 Hori. Bracing 3.2 3.2 3.2 3.24 3.3 3.4 Incl Bracing -14.1 -14.12 -14.12 -14.41 -14.15 -14.60

(+=Tension,-=Compression)

ThemembersaredesignedasperIS800-2007bytakinginto considerationthemaximumreactions.Thisdesignischecked onSAP2000.Thesectionsassignedformembersareshown inTable2.

Table-2: DesignSectionsforMembersasperIS800-2007. Members

Wind Zone Zone 1 Vb= 33 m/s

Column -141.4 -141.4 -141.4 -141.4 -141.4 -141.4

Hori Bracing 3.4 3.4 3.4 3.4 3.4 3.4

Incl. Bracing -15.3 -15.3 -15.3 -15.3 -15.3 -15.3 (+=Tension,-=Compression)

ThemembersaredesignedasperIS800-2007bytakinginto considerationthemaximumreactions.Thisdesignischecked onSAP2000.Thesectionsassignedformembersareshown inTable4

Table-4: DesignSectionsforMembersasperIS800-2007.

Members

Zone 2 Vb= 39 m/s

Zone 3 Vb= 44 m/s

Zone 4 Vb= 47 m/s

Zone 5 Vb= 50 m/s

Zone 6 Vb= 55 m/s Column ISA 110 110 10

Wind Zone Zone 1 Vb= 33 m/s

Zone 2 Vb= 39 m/s

Zone 3 Vb= 44 m/s

Zone 4 Vb= 47 m/s

Zone 5 Vb= 50 m/s

Zone6 Vb=55 m/s

ISA 110 110 10

ISA 110 110 12

ISA 110 110 12 Horizontal Bracing

Column ISA 110 110 12

ISA 110 110 12

ISA 110 110 15

ISA110 11015

ISA 6060 10

b) Design of Tank for earthquake zone III

ISA 6060 12

ISA 6060 12 Inclined Bracing

ThewatertankisdesignedinSAP2000forearthquakeload with considering wind load of different wind speed. The result of these 6 wind zones are shown in Table 3

Horizontal Bracing

Inclined Bracing

ISA 60 60 12

ISA 65 65 8

c) Design of Tank for earthquake zone III

ISA65 65 8

ThewatertankisdesignedinSAP2000forearthquakeload with considering wind load of different wind speed. The result of these 6 wind zones are shown in Table 5

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Computationalresultsincludebendingmomentsofmembers forallloadcombinations.

Table-5: MaximumMembersAxialLoadsforvariouszones (kN).

Table-7: MaximumMembersAxialLoadsforvariouszones (kN).

Member

Wind Zone 1 Vb =33 m/s

Wind Zone 1 Vb= 33m/s

2 Vb =39 m/s

3 Vb =44 m/s

4 Vb =47 m/s

5 Vb =50 m/s

6 Vb =55 m/s Column -150.6 -150.6 -150.8 -150.8 -150.8 -150.8 Hori Bracing 3.6 3.6 3.6 3.6 3.6 3.6 Incl Bracing -16.8 -16.8 -16.8 -16.8 -16.9 -16.9 (+=Tension,-=Compression)

ThemembersaredesignedasperIS800-2007bytakinginto considerationthemaximumreactions.Thisdesignischecked onSAP2000.Thesectionsassignedformembersareshown inTable6.

Table-6: DesignSectionsforMembersasperIS800-2007.

Members

2 Vb =39 m/s

3 Vb =44 m/s

4 Vb =47 m/s

5 Vb =50 m/s

6 Vb =55 m/s

Column -164.4 -164.4 -164.5 -164.5 -164.5 -164.5 Hori. Bracing 3.9 3.9 3.9 3.24 3.9 3.9 Incl Bracing -19.2 -19.2 -19.2 -19.5 -19.5 -19.5 (+=Tension,-=Compression)

ThemembersaredesignedasperIS800-2007bytakinginto considerationthemaximumreactions.Thisdesignischecked onSAP2000.Thesectionsassignedformembersareshown inTable8.

Table-8: DesignSectionsforMembersasperIS800-2007.

Members

Wind Zone Zone 1 Vb= 33 m/s

Zone 2 Vb= 39 m/s

Zone 3 Vb= 44 m/s

Zone 4 Vb= 47 m/s

Zone 5 Vb= 50 m/s

Zone 6 Vb= 55 m/s Column ISA 110 110 15

ISA 110 110 15

ISA 130 130 10

ISA 130 130 10 Horizontal Bracing

ISA 65 65 8

d) Design of Tank for earthquake zone IV

ISA 65 65 10

ISA 65 65 10 Inclined Bracing

ISA 65 65 10

ThewatertankisdesignedinSAP2000forearthquakeload with considering wind load of different wind speed. The result of these 6 wind zones are shown in Table 7 Computationalresultsincludebendingmomentsofmembers forallloadcombinations.

Column ISA 130 130 10

Horizontal Bracing

Inclined Bracing

ISA 65 65 10

4. CONCLUSION

Zone 2 Vb= 39 m/s

ISA 130 130 10

ISA 65 65 10

Zone 3 Vb= 44 m/s

ISA 130 130 10

ISA 65 65 10

Zone 4 Vb= 47 m/s

Wind Zone Zone 1 Vb= 33 m/s

ISA 130 130 10

ISA 65 65 10

Zone 5 Vb= 50 m/s

ISA 130 130 12

ISA 75 75 8

ISA 75 758

Zone6 Vb=55 m/s

ISA 130 130 12

ISA75 75 8

AftertheanalysisanddesignofSMCwatertankof25,000 literscapacityand6mheightofstagingfordifferentwind speedandearthquakezones,someconclusionsaremade.The conclusionsfromthestudyareasfollows

1. ForEarthquakezoneII,forwindspeedupto44m/s earthquakeforceisgoverning.Forwindspeedabove 44m/swindforceisgoverning.

International Research Journal of Engineering and Technology (IRJET) e-ISSN:2395-0056

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2. ForEarthquakezoneIII,IVandVearthquakeforceis governingirrespectiveofwindzone.

3. After providing section for the column as per maximum reaction obtained by envelope combination,columnfailsindesign.So,wehaveto provideheaviersectionforcolumnsection.

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