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Water storageZimbabwe. But BOTANK does notoverlook the smaller farmers in localregions that rely so heavily onagriculture for their livelihood.Ranging in sizes from 60Kl to5 000Kl, the BOTANK is supplied as acomplete structure, with or withoutroof according to client specification.Where potable water is required, thestructure will be roofed to preventcontamination from debris and toprotect water quality, providing theperfect answer for new communities.The BOTANK also safely andeffectively stores effluent andleachate and prevents contaminationto ground, running water bodies andfurther surroundings.Finally, the BOTANK Reservoirprovides a practical solution forwater storage all the while our globalpopulation increases constantly anddiminishes our most importantnatural resources to a critical level.With reasonable costs, BOTANKsurely rises above its competitors atmeeting their client's needs atproviding a product of excellentdurability and succeeds in their goalat decreasing our constant burden onnature as a sole source of readilyavailable water.*1 Denoting land that lies on the edges of adesert but has a slightly higher rainfall(above 300mm) so that some farming isstill possible.*2 During the last dry cycle between 1982and 1995, annual economic growth hase.g. been reduced by between 0.5 and1.2 % in the four years of 1982, 1983,1992 and 1995 (Finance Week, 2002).DROUGHT MANAGEMENT INSOUTH AFRICA* by G.R.Backeberg 1) and M.F. Viljoen 2)1) Water Research Commission, Pretoria,South Africa2) University of the Free State,Bloemfontein, South AfricaAWARDS EVENT ERRATUMIn the previous magazine that covered the Annual Awards Event, we incorrectly had the capacities of the Botank entry as 150 to 400kl. This should have been 4 000kl.We apologise to Botank for this error.12 Hot Dip Galvanizing Today Volume 5 Issue 4 2008
TechnicalTechnical differences between general or batchtype and continuous sheet hot dip galvanizingGENERAL OR BATCH TYPE HOT DIP GALVANIZINGSPECIFICATIONSSpecifications – local SANS 121 #1 SANS 3575 #2SANS 4998 #3Specifications – International ISO 1461 ISO 3575ISO 4998CONTINUOUS SHEET HOT DIP GALVANIZINGCoating grades None #4 Several, must be specified #5/#6Coating thickness #6 Steel thickness Local coating Mean coating Coating Average Individual Min coating(mm) thickness (µm) thickness (µm) designation mass of mass of thickness on#7 coating coating one face(µm)t>= 6 70 85 Z200 200 170 9.73
Page 1: 2008 Volume 5 Issue 4HOT DIP GALVAN
Page 4: CommentsExecutive Director’sComme
Page 7 and 8: Awards EventVolume 5 Issue 4 2008 H
Page 9 and 10: Tubes, pipes and scaffoldingneutral
Page 11 and 12: ABECO TANKS - THE NAME THAT HOLDS W
Page 13: Water storageBenefits of the BOTANK
Page 17 and 18: Duplex CoatingsDuplex coated Lula p
Page 19 and 20: Duplex CoatingsUnderstanding qualit
Page 21 and 22: Duplex Coatingsdocumenting and reso
Page 23 and 24: Duplex CoatingsRelative humidity an
Page 25 and 26: EducationMeasuringcoatings on metal
Page 27 and 28: Member’s CornerGalvadip has their
Page 29 and 30: Coating ReportThe specification req
Page 31 and 32: Coating ReportGeneral commentIn man
Page 33 and 34: Bread bakery exchanger coilinvestig
Page 35 and 36: W amoshaIt is noteworthy that sever
Page 37 and 38: Miss Conceptionsreserves were 200 0
Page 39 and 40: Walter’s CornerWalter’s CornerS
Page 41 and 42: Case StudyNo. 16/2008Case StudyRais

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