Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
Volume 10
Issue 3
Civil Engineering
Available Online: http://www.ejpau.media.pl/volume10/issue3/abs-07.html


Jan Žlusarek
Civil Engineering Faculty , Silesian University of Technology, Gliwice, Poland



Constructing of ground floors has had a long history. They had been built earlier than typical buildings. Primitive people living in caves isolated their habitats by means of trampled grouts from clay that were modified by dried organic material. They did it to improve their living conditions. These were the first realizations of floors. This indicates that the problem is old but nethertheless important even today. The same goals are achieved nowadays and more modern materials and technologies are used. Using the best solutions concerning the floors is required not only in dwelling building. With the development of industry and road communication the new problems concerning the use of proper surface solutions have appeared. Much attention has been paid to these problems lately. The International Colloquia organized in Technical Academy in Esslingen with dr P. Seidler direction have been taking place since 1987 for every four years At the WPPK conference in Ustro˝ (2000) a lot of papers concerning the industrial floors were presented. Taking it under consideration, in the presented paper, only the selected issues concerning structural-material solutions of concrete ground floors are presented.

The main function of the ground floor is to transmit static and dynamic loads and to save performance over required time in environment of the influence of different agents. Because of the hard exploitation conditions, together with the influence of different agents that destruct the ground floors, they must fulfill some usable requirements. To fulfill the service life requirements that are connected with the concrete ground floors, they must get the proper structure. To estimate the exertion of the analyzed concrete ground floors, it is necessary to take into consideration the complex state of stresses, which takes palace where the floor slab is subjected to pointed loads. The method, which makes possible to include the complex state of stresses in ground concrete slab calculations and to estimate the level of slab stresses in characteristic, analyzed of Wetergaard’s places objected by loads, has been proposed.

That is why only some issues, connected with this topic, are presented in this paper.
The model of concrete slab exertion, which makes possible to take under consideration the complex state of stresses in the slab at the place of putting the loads, is proposed. On the basis of considerations, analyses and calculations the method of defining the vertical susceptibility of the subsoil in the function of the subsoil deformation modulus is proposed. The selected issues connected with the structural solutions of concrete ground floors
are presented as well.

Key words: Concrete structures; concrete ground floor; wearing course; subsoil; bending strength; complex state of stresses; exertion model of concrete slab; ground reactive coefficient; ground deformation modulus.

Jan Žlusarek
Civil Engineering Faculty ,
Silesian University of Technology, Gliwice, Poland
Akademicka 5, 44-240 Gliwice, Poland
Phone: (+ 48) 601 43 06 71
email: Jan.Slusarek@polsl.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.