This paper is presented the manner of building and type materials of use to erect a structure made of the gabions. Some examples of applications of the gabions in the civil engineering e.g. to consolidation scarp bridges and culverts, watercourse regulation situated on a mountain river is also shown.

The differences of soil classification and of compaction test according to different standards are discussed. The influence of particles angularity and surface roughness on the engineering properties of soils is treated.

This paper presented the device of determination of the changes of the cross-section area of the samples with non-lubricated end platens tested in triaxial tests. This device enabled also the determination of the average porosity of the samples changes and changes of these porosity in the zone of the biggest deformation. Investigations have been carried out on the saturated sand samples in the drained test. The measurement of the lateral strains of the samples (38 mm diameter) has been made with application of 5 celluloid tapes with the millimetre scale. They were placed around the perimeter sample’s in eagle intervals. This method gave in practice similar accuracy of the cross section area as the device of calculation of this area from the measurement of volume change. The average area of the same sample, calculated from the measurement of the perimeters in 1/3, 1/2 and 2/3 of the height sample’s, and in 1/3 and 2/3 of this height are smaller by 0.6%. This error of the results in inaccuracy of index void ratio smaller than 0.01. This is two time bigger, if the cross section area is measured in the middle sample’s height only. The changes of porosity in medium zone of sample, when h/D > 2.0 are comparable with the changes of porosity sample’s on the lubricated end platens. For the calculation of index void ratio changes in this zone, the end platens constant area has not bean considered.

This paper presents a treat evoked free of asbestos and scale of this problem in Poland. The damaging influence of the asbestos on health is discussed. The paper describes also the recommendations for disassembling the asbestos-cement elements. The research of neutralising the asbestos-cement elements at new concrete plates is presented. As a result of this experiment, one may set that is good method for recycling this dangerous product.

The standardized requirements recommend carrying out durability tests after 7 and 28 days of the binding process. The research conducted on concretes showed that durability strength increases even in the length of a few years. As far as soil-cements are concerned, the increase in compressive strength after 28 day binding can be the cause of the sensitivity of road foundation without dilatations to contractile cracking. The aim of the research in focus was evaluating the compressive strength of soil stabilized with different types of cement at standardized period and after a year-period of binding. The research proved a significant increase of soil-cements after a year of binding as compared with standardized durability values.

Possibility analysis of cement partial replacement in concrete by mineral waste materials (fly ash, blast-furnace slag) indicate, that it is a profitable solution from technical, economical and environmental point of view. Though it causes, that strength increase is slower and other parameters (water tightness, frost resistance etc.) are achieved later, but strength after longer curing time is greater, then for concretes containing only portland cement, and other parameters are the same or even better. Guarantee of suitable technological regime allows to use concretes with puzzolan mineral waste materials not only in hydroengineering but in civil engineering, too, when one take into consideration, that full strength is not necessary in early stages of construction.

Pozzolanic properties of fly ash in concrete can be fully used if the amount of lime released during cement hydration is constantly greater then lime amount reacting with the ash. Pozzolanic property’s is defined as possibility to connection of water and also possibility to forming of matter setting. That is why for everycement fly ash with properties similar, as mentioned above should be selected.

Areas, formerly occupied by waste disposal sites (often illegal) of municipal and building waste, are least desirable subsoil for building foundation, however progressive urban development very often extorts their utilization. Examples of object foundation solutions presented in the paper (for example a former municipal waste site „Krępice”) prove, that it’s possible.

Based on the rainfall event (precipitation depth equal to h = 55.6 mm), which occurred on the area of Ursynów in Warsaw and caused water logging of several building structures and roads, rainfall parameters were determined. This data were used to calculate the parameters of the storm water drainage system. The research was performed for sub-catchment located in the urban area at Raabe Street in Ursynów district. The obtained results were compared with the values for which existing drainage system was designed in the year 1982. Performed calculations show that according to designing standards for rainfall intensity (q) equal to 131 dcm³/s ha (equivalent rainfall depth h = 11.8 mm) diameter of the existing drain d = 0.2 m should be equal to 0.275 m, whereas for rainfall intensity q = 185.4 dcm³/s ha (h = 55.6 mm) appropriate diameter of the drain will be equal to 0.35 m.

Damage of building gable wall during vibration driving of steel diaphragm wall running parallely to its axis was presented in the paper. The wall was to protect adjacent foundation trench. On this example it was shown, that some technologies adequate in normal conditions could be dangerous for neighbouring buildings if used in urban areas.