Airtightness assessment of single family houses in Belgium

Airtight construction lies at the heart of achieving high energy performance in dwellings. But how well does it apply in new construction? This paper presents results from airtightness measurements on 44 randomly selected, standard new built single family houses in Belgium and from 4 case studies including 78 additional measurements. The houses were randomly selected after completion, to assure that standard workmanship was used during construction. Where applicable, the effect of incorporating the attic and garage in the building volume was measured by performing a series of tests in different configurations. The results are compared with those from a previous study in the early 1990's, with a database that was compiled with results from 161 air tightness reports executed on newly built dwellings by private party consultants and with the governmental EPBD-database (1884 measurements). The results show that the mean leakage rate is about 6 ACH(50) for the randomly selected houses and 3 ACH(50) for the houses in the databases. The houses in the databases are measured upon the initiative of the owner. Therefore, the attention to airtight workmanship is substantially higher for these cases than in the randomly selected houses. This clearly demonstrates the difference between 'mainstream' workmanship and results obtained by the 'engaged' market

The use of different types of data to estimate the market value of single family house in the municipality of Postojna

The purpose of the thesis is to estimate the market value of a single family house in the municipality of Postojna on the basis of various types of data, namely on the basis of advertised prices of single family houses, selling prices of single family houses and single family houses with the ascribed generalized market value used with the method of comparison, on the basis of selling prices of building land which does not have a connection to public utilities, expenses for the building land development fee and expenses for the construction of a new single family house used with the method of expenses. The estimated market value of a single family house refers to a hypothetical single family house with the characteristics of the average or the median of the discussed single family houses in the municipality of Postojna. It has been established that by using the method of comparison the estimated market values of a hypothetical single family house are by 35 % higher for the sample of advertised single family houses and for the sample of sold single family houses by 21 % higher than the estimated market value by using the method of expenses. This means that it is worth investing in the construction of a single family house in the municipality of Postojna which does not hold good for the town of Postojna itself. Different estimated market values of a single family house being estimated are conditioned by different input data that is why appropriate adjustment factors should be applied in the use of certain data and methods in times of recession

Modular Single-family Houses

Poput raznovrsnih drugih građevina i obiteljske kuće mogu biti modulirane, bilo modularnom mrežom kada je raster manjih dimenzija, bilo modularnim poljima kada dimenzije obično odgovaraju zahtjevima konstrukcije. U članku su analizirani primjeri obiteljskih kuća i vila nastajali u različitim prostorima, građeni u različitim razdobljima i izvođeni u različitim materijalima, a ponajviše s konstrukcijom u armiranom betonu i čeliku. Mnogi su antologijski primjeri obiteljskih kuća moderne navedeni – kako oni najpoznatiji u svijetu, tako i neki domaći, hrvatski primjeri. U zaključku se ističu povoljne okolnosti za projektiranje i cjelokupno građenje pa se preporuča modulacija obiteljskih kuća.Single-family houses, just as any other type of structure, may be designed by means of modules; either by a modular grid in case of a smaller size grid or by modular fields when the size usually corresponds to the construction requirements. This paper gives an analysis of predominantly concrete and steel single- family houses and villas from different periods and regions. It also presents some well-known examples of modern single-family houses in Croatia and abroad. The conclusion focuses on favourable circumstances for the design and construction of modular single-family houses which are therefore highly recommended

Construction procedure of single-family houses in Slovenia

In the formation of projects, a combination of several disciplines is often used. Crucial in the process is appropriate cooperation among planners, clients and other actors in the process, since in this case the path to the common goal is faster. Although in terms of complexity, the construction of individual residential houses is less-demanding project, it can be a case study to display the display the timelines of construction and the design phases.Despite the fact that the projects differ, phases of the specified time schedule of the project, are in most cases followed in the same order. The optimality of the design process is shown in a carefully crafted model of phase sequences, which allows us the quickest route to the destination in the shortest time. This is an effort of the investor and/or user and the designer.The optimal design process is formed on the basis of expertise, appropriate structure, active cooperation of all involved subjects, and adequate coordination of the profession, adhering to prescribed laws, regulations, procedures and available finances of investor and culture

Existing Sustainable Renovation Concepts

Deliverable 1.1Successful Sustainable Renovation Business for Single-Family Houses - SuccessFamilie

Regression Analysis To Forecast the Demand of New Single Family Houses in USA

Forecasting the market demand is a very critical step in planning all kinds of business including construction business. This study was conducted to develop a robust regression model that enables construction companies predicting the demand of new single family houses in the USA. The study identified each of inflation rate, mortgage rate, GDP, Personal consumption, unemployment rate, and population as independent variables that may affect the market demand of new single family houses. The data were collected over 21 years, evaluated, and sorted according the nature of the relationship between each independent variable factor and the market demand of new single family houses. The data reflected double conversion in relationship between GDP, Personal consumption, and population and the market demand due to the financial crises and the beginning of the recovery after it. The Dummy variables technique was used to identify the periods of before the financial crisis, during the financial crises, and after it. The dummy variables have been added to the model to handle the fluctuation in these data sets. The study concluded that the unemployment rate variable and the personal consumption variable are the most important factors that affect the market demand of new single family houses in the USA. A regression model was developed to be used to predict the market