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High precision positioning survey method for construction engineering Construction engineering positioning measurement, elevation measurement, deformation observation -
Introduction to construction surveying methods and instruments The elevation survey mainly includes leveling and trigonometric leveling. Leveling is the use of horizontal line of sight to measure the height difference between two points. Because of the high accuracy of leveling, it is the most important method in leveling. -
Surveying methods and technical disclosure of drilling discipline in housing construction engineering Use a level gauge to adjust the adjusting nut of the anchor bolt to the same elevation position required for installation, and reserve the position of the base plate on the nut -
Distance measurement method and linear orientation of municipal engineering In order to check and improve the accuracy, it is also necessary to carry out the back measurement. The ratio of the difference between the forward and back measurement lengths to the average of the whole length is used and converted into a fraction of 1 to measure the accuracy of distance measurement. -
Method and technology of municipal engineering subway tunnel through survey The so-called through survey refers to the survey carried out by using two or more opposite or same heading working faces to drive the same roadway at the same time so that it can be correctly connected at the predetermined location according to the design requirements. -
Calculation and error analysis of municipal engineering tunnel survey method Control survey outside the tunnel: the location survey accuracy is low, which does not meet the accuracy requirements of tunnel penetration. Function: establish a precise control network between the excavation openings of the tunnel to carry out control survey or centerline survey in the tunnel to ensure the accurate connection of the tunnel. -
Measuring method for deflection value of glass fiber reinforced plastic pipe in a large water conveyance project Before installation (or soil covering), take the machined socket end face of the glass fiber reinforced plastic pipe as the datum plane, divide the pipe circumference by 90 ° and make marks on the end face. With each marking position as a dot, use a tape measure and a marking pen to draw four arcs with a radius of 6m on the inner wall of the pipe -
Control survey method and data processing of municipal tunnel engineering Tunnel is an important part of the line, especially the long tunnel is the control project of the whole line construction. Before the tunnel construction, the ground control survey shall be carried out first to provide the coordinates of the control piles at each excavation portal of the tunnel, the azimuth angle of the orientation direction and the elevation of the benchmark, so as to guide the survey into the tunnel. -
Rapid construction survey method (rapid) Want to quickly master the survey construction for friends. -
GPS Survey Method -- RTK Introduction GPS Survey Method -- RTK Introduction -
Test loading equipment and measurement method Loading equipment Generally, the loading device used for testing can simulate various actual actions on structures or components by jack, hydraulic test device, computer and vibration booster online system, simulated earthquake shaking table, artificial explosion, etc. in addition to physical loading. There are supports, buttresses, reaction frames, reaction walls and test benches in all test load bearing devices -
Measuring method for verticality of concrete chimney A comprehensive and detailed method for measuring the specific perpendicularity of chimneys is worth collecting. Including machine erection position selection, method, etc. -
Measurement method of superstructure construction elevation When measuring the height difference from ± 0.00 horizontal line upward, the steel ruler used shall be verified. When measuring the height difference, the ruler body shall be vertical and the standard tension shall be used. At the same time, the ruler length and temperature shall be corrected. -
Training handout PPT of engineering surveying instruments and methods On the left side of the panel, aim at the same target in the order of the upper, middle and lower horizontal wires, and read the vertical panel readings respectively; On the right side, the same observation as above; Calculate the index difference and vertical angle measured by three horizontal wires respectively, and take the average value of the vertical angle as the value of one measurement set of a target. -
Analysis on the Measurement Method of House Area Houses are the basic space for people's production and life. The design of houses and rooms should meet the minimum activity needs of people's production and life. In the area measurement of house property measurement, contradictions and disputes caused by the measurement of the floor height of the house often occur. This paper aims at the definition of floor height and net height of buildings, the reference plane for measurement of floor height and net height of buildings, and the error and limit of measurement results -
Survey method of a GPS base station (precise) All surveying comrades have been more or less exposed to the GRS surveying system, but how to use the GPS surveying system has always been a concern of everyone, so I would like to use this article as a reference to help everyone. -
Measuring method of speed characteristic of vacuum circuit breaker By analyzing the movement of the mechanical characteristics of the vacuum circuit breaker, a method of measuring the movement speed of the vacuum circuit breaker by using a resistance sensor instead of a photoelectric sensor is proposed. The application of displacement sensor improves the measurement accuracy of time and speed. It solves the problems that some vacuum circuit breakers are difficult to measure accurately and various sensors cannot be installed at present. -
Supervision methods and procedures of construction engineering survey Supervision methods and procedures of construction engineering survey -
PPT training on measuring methods and skills of furniture room type A designer s led an intern z to measure the ruler. Due to the wrong address, he ran a lot of wrong roads, which not only wasted an afternoon, but also reduced the designer's professionalism, which reduced the customer's trust in himself, which was not conducive to the subsequent design work. -
Detailed description of total station measurement method 1、 Instrument appearance and function description 2. Angle measurement mode 3. Distance measurement mode 4 coordinate measurement mode 5. Main menu mode 6. Main functions of total station -
Elevation measurement method in basement construction stage During earthwork excavation, special personnel shall be responsible for the measurement of elevation. When approaching the base, the elevation point shall be led into the foundation pit, and marks can be made on the engineering pile reinforcement. -
Construction technology and measurement method of bridge piers and abutments Piers and abutments are structures that support bridge span structures and transmit dead loads, vehicles and other live loads to the foundation. Usually, the bridge set at both ends of the bridge is called abutment, and the bridge set in the middle is called pier, as shown in Figure 1. In addition to bearing the load of the superstructure, the pier also bears the pressure of water, the wind above the water surface, the possible ice load, and the impact force of ships, rafts or floating objects. -
GBT4959-2011 Hall Sound Reinforcement Characteristics Measurement Method GBT4959-2011 Hall Sound Reinforcement Characteristics Measurement Methods GBT4959-2011 Hall Sound Reinforcement Characteristics Measurement Methods -
Construction survey steps and methods for large-scale water transfer project Due to the wide range, cross region and cross basin of large-scale water transfer projects, the terrain and geomorphology of the areas they pass are often very different, which also brings many difficulties to the surveying work. This project is a typical channel project in the South to North Water Transfer Middle Route Trunk Line Project, with a total length of 4.8 km. There are 6 cross road buildings, and there is a centerline radius near the starting point of the bid section -
Comparison of Measurement Methods for Anchorage Retraction Value of XM System This paper mainly introduces the construction methods of highway prestressed tensioning -
Land and housing survey method (including house property household plan) 5. Division and numbering of cadastral map a. 96 × 96 row and column division numbering shall be adopted for 1:10000 cadastral map. b. The 1:500, 1:1000 and 1:2000 cadastral maps can be square (50cm × 50cm) or rectangular (40cm × 50cm). The map sheet number is numbered according to the coordinate kilometers of the southwest corner of the map outline, X -
Survey method of a certain land and house (including house property household plan) 1. Mathematical foundation 2. Boundary survey 3. Control survey 4. Boundary point survey 5. Cadastral mapping 6. Property survey 7. Property area measurement -
Lesson 5 - Project Pricing Method and Basis Section I Project pricing method Section II Classification of project pricing basis Section III Budget quota, budget estimate quota, budget estimate index, investment estimate index and cost index Section IV Consumption quota of labor, materials, machines and tools per shift Section V Unit price and fixed base price of labor, materials, machines and tools per shift Section VI Cost quota of construction and installation works Section VII Project cost information and application -
Location survey record of a project This document is a positioning survey record of a project, with complete contents, which can be downloaded -
Solution to a project complaint (1) The complaint acceptor shall record the complaints in detail on the household project complaint acceptance form; (2) Immediately notify relevant departments to send personnel to the scene for further investigation; (3) Properly handle complaints according to the survey; (4) The complaint handler shall reply the complaint handling result to the resident; -
Data of fast measurement method for tunnel construction section Tunnel section, vertical direction (elevation) is the longitudinal axis, which is represented by H; The horizontal direction (distance from the centerline of the line) is the horizontal axis, which is represented by B. The vertical coordinate of the circle center is equal to the design elevation of the route minus the distance from the design elevation line to the tunnel center times the cross slope ratio, plus the height from the circle center to the pavement. Expressed by formula (1-1). -
Construction scheme and method for surveying and setting out of construction engineering According to the working procedure of overall control first and then local control with high precision and low precision, accurately measuring and protecting the pile position of the site plane control and main axis is the basis for ensuring the accuracy and smooth progress of the whole construction survey. Therefore, the selection, measurement and protection of the pile position of the control network and main axis should be considered and determined together with the construction scheme and site layout. -
Measurement Method for Wind Energy Resources of Wind Farm GBT18709-2002 In order to meet the needs of the development and construction of wind farms in China and standardize the measurement methods of wind energy resources, the national unified Measurement Methods of Wind Energy Resources in Wind Farms is hereby formulated. This standard does not cover factors that affect the development and construction of wind farms, such as roads, transportation, power grids, topography, etc. This standard is to summarize the measurement of wind energy resources in the development and construction of wind farms in China -
GBT 5700-2008 Lighting Measurement Methods This data is GBT 5700-2008 Lighting Measurement Method, which is detailed and can be used for reference.
