Formation of System of Indicators for the Evaluation of Design Solutions in High-Rise Housing Construction

Abstract

The paper describes the sequence of development and validation of methods for assessment of projects of apartment houses on the basis of the scorecard. A variety of proposals for those who are planning to improve their housing conditions greatly complicates the choice. Indeed, it is difficult to focus on one option when there are so many tempting alternatives. We have attempted to develop a methodology to assess design solutions based on a set of indicators and choose the best option from the point of view of the buyer, with the help of the expert survey. The selection of the expert group was held by way of mutual recommendations (“snowball”). The disadvantage of this method is the lack of assurance of estimation reliability. Group expert assessment can be considered objective only if there is the sufficient consistency in the responses of experts. We have chosen the method of the study - individual interview, which takes place in the form of a free conversation and allows you to receive from the respondent the detailed information on the issues discussed; it is held in the convenient for the expert time, and allows for eliminating the influence of authority and the suppression of other opinions. According to the results of the expert survey a structured model of assessment was composed in which characteristics of the project are located at four levels: 1) price and reliability of the developer; 2) description of the apartment; 3) description of the house; 4) feature of the construction area. Each characteristic of the project is described by several indicators. Based on the ranks of the experts, weighting coefficients (coefficients of importance) of each indicator were calculated. For testing the methodology two projects similar in space and layout design and location were taken. The list of indicators on the blocks, instructions for calculating, weighting factors and calculation of integrated indicators are presented in the tabular form.