... tropical climates, Easy welding & installation, Lower water absorption unaffected by metal, salt and other chemicals. ... eliminating danger of cracks. These are engineered as water Tight Seals in poured concrete structures. Public Utilities:Bridges ... Road Embankments, Concrete Roads, Tunnels,Water Tanks, Swimming Pools, Municipal Hydraulic Projects. Water Filtration Plants. Clarifies. Sewage Disposal ...