With the benefit of centuries of hindsight it is possible to see concrete's evolution from its discovery to its current widespread use in reinforced form as closely intertwined with the evolving needs and priorities of the societies that used it Although in the past architects and people minded construction its methods aesthetics ornamentation They did not engage with the unknown problem of the pollution at the time Now that we know how our decisions constructions are influencing the world design outcome is different The project might be simple construction wise and appearance but highly sustainable and ecology driven Our and the worlds needs changed and cannot be ignored anymore that's why the design outcome is and should evolve directly according Today a new powerful need is emerging to reduce the environmental impact of human activities including building use fewer materials and less energy and consider the entire design life cycle from conception through manufacture to disposal Being one of the main materials today concrete has its advantages and disadvantages It is economical since the ingredients mentioned already are readily available and relatively long life span gives it reliability also as low maintenance it does not decay corrode or rot as other building materials It also has the ability to be moulded or casted into many desired shapes can occur on the work site which reduces shipping cost For fire hazard concrete is able to withstand high temperatures hence it is often used for storm shelters Although disadvantages are quite high