‪TOOLS‬‬ ‫‪TO‬‬ ‫‪INVESTIGATE‬‬ ‫‪BUILDING‬‬ ‫‪ENVELOPE‬‬ ‫‪THERMAL‬‬ ‫‪BEHAVIOUR‬‬ ‫‪FOR‬‬ ‫‪URBAN‬‬ ‫‪HEAT‬‬ ‫‪ISLAND‬‬ ‫‪MITIGATION‬‬ ‫)‪(UHIM‬‬ ‪COOL‬‬ ‫‪BUILDING‬‬ ‫‪ENVELOPE:‬‬ ‫‪AN‬‬ ‫‪URBAN‬‬ ‫‪HEAT‬‬ ‫‪ISLAND‬‬ ‫‪MITIGATION‬‬ ‫‪STRATEGY‬‬ SHADING DEVICE CALCULATOR: A TOOL FOR SUSTAINABLE, ENERGY-SAVING, CLIMATIC BUILDING DESIGN INVESTIGATION INTO THE THERMAL IMPACT OF WINDOW-TO-WALL RATIO, BUILDING ORIENTATION AND GLAZING MATERIAL ON OFFICE SPACES