EFFICIENCY OF NATURAL LIGHTING IN OFFICE BUILDINGS ON THE EXAMPLE OF A BUILDING LOCATED IN POLAND

It is important for sustainability to reduce the energy demand of both existing and planned buildings. The requirements for workspace lighting clearly define the minimum light intensity that must be provided. The aim of the study was to verify if the selected office layouts independently fulfill the requirements of the Polish Norm for lighting of workplaces without the use of artificial light sources. The analysis took into consideration standard working hours of office buildings, that is from January to December, from 8 a.m. to 4 p.m. Interpretation of the obtained data allowed to select the layouts that maintain the most stable efficiency of natural daylight.