A theodolite is a survey testing instrument used for measuring horizontal and vertical angles. A basic theodolite usually consists of a small sized telescope linked with mechanisms to measure horizontal and vertical angles. It has several moving parts and is quite heavy. The theodolite telescope is fixed within perpendicular axes- the vertical axis and the horizontal‚ or trunion‚ axis. The instrument is fixed on a base that can be rotated on a tripod by a leveling system. The angle to the desired
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one charger data down loading cable‚ software CD and Precise Aluminum tripod and single prism target set. SAME SOKKIA SOFT WARE 2‚60‚000/- 4 KOLIDA THEODOLITE KOLIDA Electronic thedeolite model KT-02 1 ’ sec Display accuracy‚ Double side screen with two batteries and Heavy duty Tripod. Two Years Warranty On Kolida Theodolite 80‚000/- 5 KOLIDA auto set level Model KL 32‚ complete set. with Imported tripod & leveling staff 21‚500/- 6 KOLIDA auto set
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AP 224 QSM 415 Land Surveying Chain Surveying What is chain surveying? Chain surveying is a type of survey in which the surveyor takes measurements in the field and then completes plot calculations and other processes in the office. Here only linear measurements are made i.e. no angular measurements are made. This is most suitable adapted to small plane areas with very few details. If carefully done‚ it gives quite accurate results. The necessary requirements for field work are Chain Tape Ranging
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SURVEYING LEVELLING Levelling is the branch of surveying the object of which is : 1. To find the elevations of the given points with respect to a given or assumed datum‚ and 2. To establish points at a given elevations or at different elevations with respect to a given or assumed datum. The operation is required in the setting out of all kind of engineering works. levelling deals with measurements in a vertical plane. MEATHODS OF LEVELLING Three principal methods are used for determining
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Land Surveying EC4202 2013 Assignment One. Task- We did a levelling circuit around Union Street‚ Harbour Terrace‚ Forth Street and St David Street. The aim was to level around from point A through to point D with one inverse shot to find the height of A Block. We levelled the route completely once but swapped around and adjusting and moving the staff and tri pod each time. We all had turns at booking‚ shooting and holding the staff. We adjusted the lenses of the Dumpy Level to suit everyone’s
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INTRODUCTION ▪ Two Peg Test is a surveying operation carried out to determine whether the levelling bubble and telescope line of sight are parallel. OBJECTIVE ▪ Peg Test is a surveying operation carried out to determine if the leveling bubble (bubble axis) and telescope line-of-sight (line of collimation) are parallel. THEORY ▪ By using the leveling method‚ work for establishing Temporary Bench Mark (TBM) was done ▪ Bench Mark (BM) must be known first. BM
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Calibration of Total Station As there is height transfer from Wong Yi Chau to Tai Tau Chau‚ reciprocal leveling is needed to minimize the effect of the atmosphere as well as the line of sight and curvature corrections. As a result‚ total station will be calibrated before performing reciprocal leveling. Line-of-sight error and V-Index are determined through calibration. Line-of-sight error and V-Index The line-of-sight error or collimation error (C) is the deviation from the perpendicular between
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FIELD WORK NO. 5 DIFFERENTIAL LEVELING I. OBJECTIVES: To determine the elevation of points relative to a reference point by differential leveling II. INSTRUMENTS: Engineer’s level‚ Leveling Rods‚ Marking Pins III. DISCUSSION: Direct leveling is the commonly employed method of determining the elevation of points some distance apart by a series of set ups of a leveling instrument along a selected route. This method of leveling is also referred to‚ as spirit leveling since the device
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FIELD WORK TITLE FIELD WORK TITLE Two peg test INTRODUCTION INTRODUCTION Two Peg Test is a surveying operation carried out to determine whether the leveling bubble and telescope line of sight are parallel. OBJECTIVE OBJECTIVE Peg Test is a surveying operation carried out to determine if the leveling bubble (bubble axis) and telescope line-of-sight (line of collimation) are parallel. TOOLS TOOLS Dumpy level Tripod
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Surveying Report Introduction The purpose of this report is to highlight the key issues involved in the completion of the land survey. It shows how CCE initially planned out what was to be done‚ and throughout the report we can see what went to plan and what had to be changed or dealt with in a different manner. From this report a drawing has been produced‚ and the method that was undertaken to achieve creating a successful drawing. The Planning Stage Before we began our survey CCE planned
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