The Impact of Extending the Loggia of a Precast Panel Building on Daylight and Insolation of the Apartments

Abstract

Extending the loggias is currently a very popular way to increase user comfort and the market value of apartments in precast panel houses. Construction companies offer several designs, enabling expansion ranging from 20 centimetres to 2.5 meters. The aim of our research is to examine the impact of this adaptation on the apartments' interior lighting conditions and to determine the limit width of the loggia, which does not prevent the fulfilment of the requirements for insolation and daylighting of residential buildings. The evaluated factors are, relating to the valid legislation in the Czech Republic, the sunlight duration on 1.3. and the daylighting factor D. In this article, we examine the possibilities of loggia extension on a specific example of an apartment house in Prague; build in the standard system VVU ETA. This building is located in practically ideal conditions, with a southern orientation of the loggias and without any shading obstacles. This enables us to find the ultimate limit of the loggia width, which will then be modified according to specific shading conditions.