Rules For The Latvian Et Seq Of The Lbn 305-15 ' Geodetic Works In Construction "

Original Language Title: Noteikumi par Latvijas būvnormatīvu LBN 305-15 "Ģeodēziskie darbi būvniecībā"

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Cabinet of Ministers Regulations No. 325 in 2015 (16 June. No 29 57. §) rules on the Latvian et seq of the LBN 305-15 "Geodetic works in construction" Issued in accordance with article 5 of the law on construction of the first subparagraph of paragraph 3 1. Latvian et seq of the LBN approved 305-15 "Geodetic works in construction". 2. The works, which construction started in accordance with the procedure prescribed by law to the date of entry into force of the provisions of the construction plan was designed according to the applicable period under the requirements of the laws can make according to the developed and harmonised implementation of the project. The Prime Minister is the Rapidity of economic Newsletters, Minister Dana Reizniec-approved arMinistr of oak kabineta2015 of 16 jūnijanoteikum no Latvian et seq of the LBN 305 325-15 ' Geodetic works in construction "1. General questions 1 et seq requirements determines the GEODESIC construction works (hereinafter referred to as the geodetic works) and the procedure to ensure compliance with the structure construction plans or agreed construction documentation's geometric sizes: size, height, and spatial coordinates, as far as not provided for by other laws and regulations for the construction and geospatial information. 2. the terms used in the et seq: 2.1. size – size expressed a measure of length; 2.2. the nominal or theoretical size-limited in absolute value between the upper and lower size limits; the nominal or theoretical size used, asking them and būvelement those sizes; 2.3. the actual size-measured for size; 2.4. robežizmēr – the maximum or minimum size; 2.5. the average size – the maximum and minimum size of the average aritmēt the shedding. Symmetrical tolerances will match the average size nominal or theoretical size; 2.6. the actual deviation – the actual size and the nominal or theoretical size difference; 2.7. the upper deviation – the maximum size and the nominal or theoretical size difference; 2.8. the lower deviation – minimum size and nominal or theoretical size difference; 2.9. the standard deviation – the scalar value which describes the scattering of the measurements in a permitted area; 2.10. tolerance-maximum and minimum measurements measurement margin or upper and lower deviation deviation margin. Tolerance is expressed as an absolute amount; 2.11. the geodetic network site – site of GEODESIC points, the coordinates of the site or the height of the object to be measured and, where necessary, associated with the national geodetic reference system; 2.12. the object-point situation, building construction points points, the būvas and the red line at the shore points, and other labeled and marked for measurement of characteristic points. 3. Construction construction requirements which determine the structure of specialized laws and regulations, in addition to that we comply with the relevant special et seq requirements. 4. in compliance with the requirements set out in et seq of the applicable site according to competence is responsible for public works Director and būvuzraug. For geodetic accuracy and correctness of the work is responsible for carrying out the work of surveying the certified person (hereinafter referred to as the geodetic work performer). 2. the Geodetic works 5. Geodetic works include: 5.1 geodetic surveys and special works; 5.2. topographical plans civil design; 5.3. setting the structure; 5.4. quality control of the works; 5.5. the structures of izpildmērījum and volume calculations; 5.6. monitoring and deformation structures of the observations. 6. Geodetic research, special work and topographical plans civil design needs is carried out in accordance with the rules of engineering studies et seq construction and normative act on high detail topographical information and its central database. 7. Civil design needs, including construction of the conception for the development of documentation, prepares the necessary documents in accordance with the special provisions of the construction, as well as carrying out other civil design necessary for the initiation of the preparatory work. 8. The structure of the definition includes the geodetic works construction plans or the geometric construction of the documentation for the transfer of area and size control (repeating the measurement for compliance with certain sizes). Geodetic work solutions works project determined, if one has been developed. 9. to control the quality of the works, with geodetic measurements determined building and the actual size of the būvelement compliance with construction plans or agreed construction documentation and būvnormatīvo and the relevant standards or works contracts laid down in the quality of the works. 10. Geodetic work quality control systems, each geodetic work according to whom GEODESIC work and nature. 11. Geodesic work in the site operator geodetic measurements, including izpildmērījum, to document the plans or schemes. If necessary, the amount of material measurements can supplement (volume). 12. the Structure of izpildmērījum shall be drawn up in accordance with the regulations in the Act on high detail topographical information and its central database, subject to the requirements laid down in specific structures in special būvnoteikumo in certain cases. 13. Structures with a height above ground level is 60 metres in length and over, in new izpildmērījum construction or conversion, changing the height of the construction, in addition to specify height at the highest point of the building. 14. Buildings with a height above ground level is 100 metres in length and above shall comply with the additional izpildmērījumo quality requirements laid down in the law on aeronautical information preparation and dissemination procedures. 15. monitoring Structures include spatial deformation, which may affect the structure during construction and operation. Construction and evaluation of būvelement deformation process is carried out in accordance with the būvnormatīvo of inženierizpēt and geotechnical design requirements. 3. Geodetic work technical task 16. Geodetic work in content and scope, as well as technical requirements determine the geodetic work technical assignments (hereinafter referred to as the technical task) the geodetic work Subscriber (hereinafter referred to as the customer), if this is not specified in the works project. Geodetic measuring accuracy evaluation given in annex 1 of this et seq. 17. the technical assignment shall include the following: 17.1. a description of the site with indications of geodetic work volume, geodetic measurements, tolerances and būvelement sizes and measuring accuracy class and potential interfering factors that can affect the results of the measurements and geodetic work, as well as specify a Subscriber the geodetic collateral; 17.2. geodetic work calendar schedule, which coordinates the work of all participants in the construction, as well as the construction of phase starppieņemšan of deadlines; 17.3. the requirements of the site to create a GEODESIC, GEODESIC points, securing the necessary geodetic point and the number of points of the object, as well as the requirements of the measurement accuracy and tolerances; 17.4. conditions that affect the expansion of the work of the geodetic or narrow depending on the works and the uzmērām nature of the object (for example, būvspeciālist or other individual public works staff involvement); 17.5. geodetic documentation of completed work; 10.9. the customer documentation content and transfer the work procedures (including operational procedures for the transmission of the results of measurements). 4. organisation of the work of Geodetic 18. Works project and the technical task specified in geodetic work content, extent and accuracy requirements are the basis for organizing the work of surveying the site. 19. before geodetic work: 19.1. geodetic foreman by written agreement with the public works Director for the contact, which is coordinated by the geodetic works and which is submitted to the operational results of measurements; 19.2. responsible public works Director: 19.2.1. writing to the geodetic works driver site posted in the defensive coordinator for the construction execution phase; 19.2.2. introduces the geodetic works Manager with job protection plan and issue a copy of it. 20. any changes in the organisation of work, measurement and evaluation, as well as the exchange of information and documentation of issues agreed in writing. 5. means of measurement and measurement methods used in Geodetic works 21. measuring features chosen geodetic work according to the technical operator of the tasks set out in the precision requirements. 22. in Geodetic use verified measuring instruments. Inspection of measuring instruments according to the manufacturer's specified requirements of accuracy not less frequently than once a year. For information about the geodetic works used in measuring instruments, as well as the inspection of documents shall be made available to the customer and building control bodies. 23. the work of the investigator selects a Geodesic of the geodetic measurement methods provide the required measurement accuracy, eliminates external effects and systematic errors. 6. Measurement precision geodetic measurement 24. precision requirements depend on the tolerance (this annex 1, 2 et seq.), or from the customer requirements of the technical task. 25. Geodetic measurement accuracy describes the class (this 1 et seq., annex tables 3 and 4). The required accuracy class provides the corresponding plan position and height measurement. The standard deviation of the measurement of the State plan, the sL is the deviation of the direction of the reference axis, which is determined in accordance with this annex 1 et seq Chapter 3. 26. The average precision (P 3 and H class 3) standard deviation of the State plan and height measurements correspond to the technical requirements that can be achieved with conventional measuring techniques, where accuracy of measurement does not affect the specific factors (e.g., soil persistence, not vibration, strong heat emissions). 27. the accuracy of measurement is characterized as permissible relative deviation of the ratio of the measured size. 28. the plan network point and height point geodetic coordinates measurement accuracy requirements and the determination of the height coordinate with adjacent network plan and height, as well as points of support points. 7. Geodetic points and object points 29. Geodetic point and object of points, of the number and arrangement of technical task, observing local terrain and building conditions. Geodetic marks and labels bearing the inaccuracy this 1 et seq., annex table 2. High and very high degree of accuracy and the plan for the measurement of the height of special geodetic marks, such as the surface of the concrete pillars with piespiedcentrēšan mark. 30. Geodetic points designed to serve up to construction acceptance into operation and keep the stability of geodetic measurements. Geodetic point coordinates and height control with repeated measurements taken from a safe point. 31. If the premises are required in the operation of the shipbuilding State of observation, relevant geodetic points designed to serve even after the adoption of the construction operation. 32. a third group of building and civil engineering site is provided with the geodetic network to carry out the works control and supervision of the construction of structures after completion. 33. In the light of the decision of the local government, the specific site of the GEODESIC points may include local geodetic network in accordance with the procedures laid down in the laws and regulations of the local geodesic construction and maintenance. 34. Permanent geodetic marks secured national geodetic network and local geodesic points in the process of building stores and around them is determined according to the law of the protection zone established by article 20. 35. the object points can be fixed with various techniques as a branded components points, specific structural elements (such as the steering wheel, plug-in components, tubular connection details) or otherwise. 8. Measurement results and their evaluation of the Measurement results 36. the goal is to get clear of the measurement results. The results of the measurements evaluated by further control, particularly if the measurements carried out repairs or reduction. Evaluation results of the evaluation indicate the name of the program. 37. Geodetic measurement results in stages and the final results of the participants work with geodetic Act passes the customer the technical tasks in the prescribed form and within the time limit. The measured results are tabulated and put with the appropriate graphics and a part of the description in the technical task otherwise. 9. Summary of the work of Geodetic documentation 38. Geodetic work report documentation (hereinafter referred to as report documentation) contains information on all geodetic measurements and calculations of the extent of geodetic work undertaken to fully evaluate and use future construction work. Review the documentation for 10 years kept in geodetic work. If the report or part of the records kept in electronic form, the paper indicates that in the documentation and electronic (digital) materials are located. 39. the report's documentation includes: 24.3. geodetic measurements of the results of the work; 24.4. geodetic work documents, including diagrams, definition of būvas and the main setting of the būvas Act (annex 2); 39.3. evaluation materials, including programmnodroš in the early stage of calculation; 24.5. the explanatory description of geodetic assessment; 24.5. external conditions data, including temperature, humidity, lighting; 24.6. geodetic works involved in the list; 24.7. geodetic measurement used in the feature list. 24.7. checking of means of measurement documents. Economy Minister Dana Reizniec-oak pielikumsLatvij et seq of the LBN 1 305-15 ' Geodetic works in construction "(approved by Minister 16. jūnijanoteikum kabineta2015 no 325) geodetic measurement accuracy evaluation i. basic concepts the measured size of the measured size of 1 basic concepts of graphic explanation is given in Figure 1.
II. Tolerance, the size of the interval, the confidence level and accuracy of geodetic measurements 2. Tolerance (T) shall be determined using the following relationship: T = C * C * C *, and C *, which respectively the maximum and minimum size. 3. include all potential tolerance factors, which may cause deviations in size. Tolerances determine the confidence level. 4. where the size of the confidence interval contains X this size, the actual value of X with the following probability: ~ P {kσx ≤ X ≤ X-~ X + k σx} P {C * ≤ X ≤ C * ~} = 1, α 5. Standardized value (k) depends on the confidence level check. table 1 shows the normal standardized values commonly used confidence levels: 68.3% probability (Figure 2, the 1σx area), the probability of 95.0% (Figure 2-2σx area) and the probability of 99.7% (Figure 2-3σx area). 1. table 1 – α k 3.0 1.0 95.0% 2.0 99.7% 68.3% 6. Measurement accuracy in the evaluation of such a relationship is important: T = 2 k 7. σx responsible technical solutions is a safe interval 3σx. Geodetic measurements in evaluate the construction if the confidence level is 99.7% (k = 3, T = 6σx) (if a construction or technical exercise, not otherwise specified). III. The measurement deviation 8. Factors affecting the shipbuilding and būvelement, can be divided into two or three relatively independent, i.e. not the equivalent korelējoš groups of deviations. Groups divided into deviations are as follows: 8.1. būvelement structures and thus permissible deviations; 8.2. būvelement or template in the manufacture of the permissible deviation (this group of deviations may not be); 8.3. works unacceptable deviations and deformation-induced deviations. 9. One group of the permissible deviation determined this expression: σ = T/2 k ö n, where n-number of groups adopted. Check the parameter k and n are used to support the joint coefficient of variation: V = σ/T = 1/2 k ö n which satisfies the following condition: 10% ≤ V ≤ 20%. 10. Coefficient of variation to justify the choice of using one of the following principles: principle of equal impact 10.1 – measurement bias is intended just as much as the rest of tolerance a part of construction factors together: n = 2; V = 1/k if k = 2, 2.83 then V = 0.18 = 18%, measurements the codes geodetic construction determines the lowest allowable precision requirements; 10.2. less impact key-the measurement bias is for about 1.5 times less tolerance than other parts of the factors together works: n = 3; V = 1/k If k = 3, 3,46 then V = 0.1 = 10% used in this measurement standard deviation: σ = 0.1 T in the expression that determines a sufficient safety and reliability of the measurements and used in geodetic measurement evaluation if a construction or technical exercise, not otherwise specified; 10.3. no significant impact key-the measurement bias is for two times less than the rest of tolerance a part of construction factors together: V = 1/4 k if k = 3, then V = 0.08 = 8% that the GEODESIC measurements determine the strictest construction – potentially higher-precision requirements. This principle is used in the ekspertpārbaud, the quality of the works and the geodetic measurement accuracy. The measurement of the deflection of the examiners considered not significantly small. IV. Geodetic point marking 11. geodetic measurements To ensure the required accuracy geodetic point and for the strengthening of the marks, labels and label accuracy determined not allowed in table 2. 2. table No. p. c. Mark way marks the center of the label type label permissible uncertainty 1. Concrete column with a metal plate Piespiedcentrēšan plate, engraving, 0.3 mm 0.4 mm 2 <