Features of the use of stay in place floor formwork
The variant study of various technologies for the construction of floors in fixed formwork within the framework of implementation on one project allows to improve the organizational and technological reliability of construction production. Consideration of the complex manufacturability of various systems of non-removable formwork of floors allows us to obtain the enlarged technical and economic indicators necessary at the design stage for preliminary variant design and selection of the most suitable technical solution for the construction conditions. According to the results of the study, by constructing property trees, the main factors of transport, installation, production and operational manufacturability of fixed formwork were identified. The main indicators of the considered groups of manufacturability can be expressed in absolute values obtained by the analytical method or have a qualitative assessment. A qualitative assessment of the technological performance indicators can be carried out by conducting an expert survey. The totality of the obtained qualitative and quantitative indicators express the complex manufacturability of the permanent formwork. To conduct the survey, various conditions of the construction site were formed and described to determine the weight of the processability factors. The required number of experts has been determined to rank the factors of manufacturability x1-x14, and an expert survey has been described. Rank matrices are provided for each of the surveys conducted, the assessment of the consistency of expert opinions is confirmed using the Kendel concordance coefficient, for which the Pearson consistency criterion is determined, the "Noise Field" factors are insignificant for further research. The obtained ranking results make it possible to assess the impact of each factor on the complex manufacturability of fixed formwork of floors, which allows, when identifying the corresponding dependencies, to develop a methodology for determining preliminary technical and economic indicators for carrying out variant design.