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1
Content available Measuring devices set for determining height differences in construction works
Ćmielewski B., Ćmielewski K., Gołuch P.
Geomatics, Landmanagement and Landscape
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2015
|
no. 3
19--28
EN
During construction and maintenance of buildings it is necessary to transfer the height from the ground level to each floor. The transfer is realized by various methods, e.g. by geometric levelling, geometric levelling with the use of geodetic measuring tape, or by trigonometric levelling. The authors developed and made a set of measuring devices consisting of a benchmark table and plane mirrors enabling the transfer of height with the use of an electronic total station equipped with an option of measuring distance without using reflector prisms. The paper presents the results of experimental studies carried out within the building of The Faculty of Environmental Engineering and Geodesy of the Wrocław University of Environmental and Life Sciences, with the use of the proposed measuring devices set. The research work was based on functional and accuracy analysis and the analysis of the time of height transfer made by means of the studied measuring devices and was compared with the measurement results obtained by a precision level Leica DNA03.
2
Content available Using the vertical wheel of a theodolite as a spirit level and devices for defining slope testing
Ćmielewski K., Kuchmister J., Ćmielewski B.
Reports on Geodesy
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2011
|
z. 1/90
69-76
EN
New measuring devices which appear in geodetic equipment that are used to measure small inclination angle i.e. Nivel 200 from Leica or box and pipe levels which help to set auxiliary geodetic devices and electronic devices (prototype) for defining inclination are subject to periodical control. They are run on a level examiner which mainly defines level ascendancy, error of middle position of the level's bubble, influence of ecological changes and measurement range. The solutions to examinations of level very often are of a prototype character (secured by a patent). Manufactured ones are quite expensive and have a character of laboratory devices.
3
Content available Using a code leveler to measure the length of short segments
Kuchmister J., Ćmielewski K., Ćmielewski B., Mąkolski K.
Reports on Geodesy
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2011
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z. 1/90
207-214
EN
During measurements or setting out geometrical values of engineering objects various inconveniences and obstacles can appear while using traditional geodesic measurement methods. Such situations can happen during the process of measurement or setting out as a result of the length of the project, based on building – assembly which is used to precisely set subassemblies of machines or devices. The authors use, to measure a segment of precise length, an equipped code leveler which allows them to skip obstacles present in the measured space which is necessary to perform geodetic monitoring. The poster shows results of the performed fragmental and complex researches – measurements of the applied device and setting out and measuring horizontal lengths. Chosen natural influences: environmental, legislative actions, measurement failures and others, which can influence the results of observations by means of DNA 03 leveler, were defined as a result of fragmentaristic researches. Running complex research works based on the long term allowed one to define measurement precision of various segments length by means of battens of various division (fiberglass batten: metrical and code division, precise code batten).
4
Content available Use of mems technology in mass wasting research
Ćmielewski B., Kontny B., Ćmielewski K.
Reports on Geodesy
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2011
|
z. 1/90
85-92
EN
Mass movements are a major threat to human life. Their growth depends on many factors. The main factor causing the surface mass wasting is the gravitational force, but the conditions in which this force can act, arise in different ways: it may be undercutting of slopes by erosion or weathering, deep relaxation of the layers forming the edge or slope overload by rain or snow. Often, all these factors interact. The material speed movement down a slope can be very slow, in the manner that is difficult to observe as well as suddenly and violently at a high speed. Methods permitting the monitoring of areas at risk of movement are geodetic, geptechnical and geophisical technics. The most popular method to investigate the movements of the soil layers is to use the inclinometer probe. However, this application requires a large effort involving the execution of specific wells, set up columns and the most expensive item inclinometer probe. Measurements using this technique are periodic and not fully reflect the processes occurring beneath the surface. To improve result several probes can be connected together, admitted to the same hole and registering readings in a real time. The cost of installation often exceeds the project budget. In this paper authors want to put attention to the possibility of using miniature measuring devices such as accelerometers, which are working in low -g š2g, to detect the force of Earth's gravity, distributed into three axis X, Y, Z. This allows calculating the direction of the deflection from X, Y axis and the deviation from the vertical line.
5
Content available Terrestrial laser scanner technic as a method for identification deformation areas of slops
Ćmielewski B., Kontny B.
Reports on Geodesy
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2011
|
z. 1/90
77-84
EN
Modern methods of determining the deformation of superficial objects, not monolithic, such as a slope, are based on observations of both sources: geodetic and geotechnical data. Surveying methods require investment in dense network of control points, which does not fully reflect the nature of occurring changes. This is the nature of the point observation and non-optimal distribution of points resulting from insufficient geological substrate. Geotechnical measurements also represent the point nature of the occurring changes.
6
Content available Porównanie geodezyjnych metod klasycznych oraz technologii HDS do określenia odkształceń kratowej konstrukcji masztu
Ćmielewski B., Mąkolski K.
Wiadomości Konserwatorskie
|
2009
|
Nr 26
718-726
PL
Kratownicowa konstrukcja, taka jak maszt, ma często skomplikowaną przestrzenną budowę. Istnieje kilka metod, by określić jej odchylenia i wypaczenia. Niniejszy artykuł przedstawia porównanie dokładności i efektywności wybranych metod pomiaru. Odchylenie i wypaczenie przedstawionego obiektu zostały wyznaczone przy pomocy metod z zastosowaniem elektronicznego tachymetru Leica TCRP1203: tradycyjnej - z pomiarem kierunku, zmodyfikowanej - przy zastosowaniu pomiaru odległości bez reflektora i techniki z użyciem lasera skanującego Leica ScanStation.
EN
A truss construction, such as a mast, has often complicated spatial composition. There are several methods to determine its deflections and distortions. This article presents the comparison of precision and efficiency of chosen measurement methods. Deflection and distortion of presented object was determined by methods with the use of an electronic tachymeter Leica TCRP1203: traditional - direction measurements, modified - which uses measurement of distances without a reflector and the technique of laser scanning using Leica ScanStation apparatus.
7
Content available Precision levelling with use of broken aiming lines
Ćmielewski K., Kuchmister J., Mąkolski K., Ćmielewski B.
Reports on Geodesy
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2009
|
z. 2/87
105-112
8
Content available Measurement of the length of short segments with use of a code level
Ćmielewski K., Kuchmister J., Mąkolski K., Ćmielewski B.
Reports on Geodesy
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2009
|
z. 2/87
113-119
9
Content available Mathematic - Physic models of horizontal refraction in engineering and industrial measurements of the highest precision
Bryś H., Ćmielewski B., Kowalski K.
Reports on Geodesy
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2009
|
z. 2/87
57-63
10
Content available Definition of the lattice mast construction deflections
Mąkolski K., Ćmielewski B., Kuchmister J., Waligórski T., Pająkiewicz K.
Reports on Geodesy
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2009
|
z. 2/87
261-269
EN
Architectural structures, like lattice mast, has often complicated spatial construction. There are several methods to perform such surveys. To compare precision and efficiency of the chosen measurement methods, the deviation of a mast was defined by methods using an electronic tachymeter: traditional - direction measurements, modified - which uses reflectorless measurement of distances and technique of laser scanning.
11
Content available Control measurements of geometry at location of crane carriage wheels: tolerance - method of measurements - instrumentarium
Bryś H., Ćmielewski B., Kowalski K.
Reports on Geodesy
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2009
|
z. 2/87
47-55
12
Content available A post for precision researches of measurements of distances by mirrorless tachymeter
Kuchmister J., Mąkolski K., Ćmielewski K., Ćmielewski B.
Reports on Geodesy
|
2009
|
z. 2/87
185-191
13
Content available A concept of monitoring dilatation gaps of engineering buildings with use of an optic wire CCD camera
Bryś H., Ćmielewski B.
Reports on Geodesy
|
2009
|
z. 2/87
39-46
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