Volume 19 (2011): Issue 1 (March 2011)

Cartographic generalization plays an important role in the creation of maps. The implementation of generalization rules in the form of generalization tools in a GIS environment is an important part of digital cartography today. The article describes possibilities for the use of vector dataset generalization tools in an ArcGIS 9.2 environment. The main goal of the paper is to design and verify a generalization model of buildings for cartographic output on a scale of 1 : 10 000 on the basis of BD GIS. The limit values were defined, and two approaches to building generalization on a scale of 1 : 10, 000 were defined and tested (Generalization A, Generalization B).

Attention is paid to the problems of the protective waterproof membranes of sloping roofs. The article presents a laboratory analysis of protective waterproof membranes according to their deree of watertightness. The laboratory analysis consists of 3 kinds of laboratory measurements: watertightness by a method of constant loading by a water column, watertightness by the method of a maximal water column up to 1500 mm, and watertightness by a dynamic method through rain simulation.

Ventilation methods for protected escape route type Ap are defined and given technically and by typology in current legislation [1] and [5]. The simulation of the growth of a fire and movement of smoke was modelled on a stairway in a block of flats with 9 aboveground storeys and one underground storey (the most used type of stairway in blocks of flats in the Slovak Republic). The initiation, dynamics and movement of smoke are influenced by the efficiency of the natural ventilation. The dangerous products of fire, smoke, visibility and temperature influence safe evacuations and human behaviour. The selected model was verified by an actual fire.

Reinforced and concrete-encased composite columns of arbitrarily shaped cross sections subjected to biaxial bending and axial loads are commonly used in many structures. For this purpose, an iterative numerical procedure for the strength analysis and design of short and slender reinforced concrete columns with a square cross section under biaxial bending and an axial load by using an EC2 stress-strain model is presented in this paper. The computational procedure takes into account the nonlinear behavior of the materials (i.e., concrete and reinforcing bars) and includes the second - order effects due to the additional eccentricity of the applied axial load by the Moment Magnification Method. The ability of the proposed method and its formulation has been tested by comparing its results with the experimental ones reported by some authors. This comparison has shown that a good degree of agreement and accuracy between the experimental and theoretical results have been obtained. An average ratio (proposed to test) of 1.06 with a deviation of 9% is achieved.

The contribution contains the reasons for and the methods of flood protection for villages in small valleys attacked by flash floods, which cause high economic, cultural and social damage. One of the possible solutions is to build a detention reservoir, which has to retain the flood wave and prevent an odd amount of water from flowing out of the river bed. In this paper a model example is given. The aim of the example is to show (according to hydrological data) how to design the dimension parameters of the dam, i.e. the height of the dam, the outlet structure capacity, the spillway capacity, the stilling basin and the necessary river bed lining. Attention is paid to stability problems, as well.