© Copyright Hi Water Concrete Tanks 2010 Steel  All steel used is to Engineers specifications for the various sizes from load bearing weight. Tanks mesh TM212 B.5 Y12 starter bars floor & wall. Concrete Mix  Concrete mix is 32MPA in 80 slump in conjunction with waterproofing ans superplasterzier that boosts MPA therefore eliminating shrinkage cracks from high strength concrete. Concrete Tops All Hi Water Concrete Tanks use 6 x 150mm columns evenly spaced and filled with Y12 and vibrated concrete. 50000 Lt (12 Gal) to 260000 Lt (26 Gal) Silo Roofs All our silo roofs are made from heavy gauge galvanised iron sheeting. Colour Bond available.