GOVERNMENT ENGINEERING COLLEGE

Slides:



Advertisements
Similar presentations
LOGO APPLICATION OF A PARCEL. Agenda APPLICATION FOR PROJECT BUILDING OPERATIONS 1 ) Without help account application APPLICATION OF A PARCEL -- How can.
Advertisements

Unit 12 Construction Surveying
Construction Surveys
Basic Setting Out.
Access BDD Survey School
Gable Roof BCGCA3007B.
Surveying Chain Surveying
Design and drawing of RC Structures CV61
ENGINEERING SURVEYING & PHOTOGRAMMETRY CVE 314
Chemical Department. Guided by- prof D.M Prajapati. Prof. J. M. Jadav
S.H.H.S Building Construction
Dr. Dan Trent Mississippi Valley State University January 28, 2013.
Set out masonry structures
Harry Williams, Cartography1 Surveying Techniques I. The USGS supplies 1:24,000 scale maps for all the U.S. But detailed topography at larger scales is.
Faculty of Engineering Technology
1.Meet B Parmar ( ) 2.Swapnil A Parmar ( ) 3.Pratik C Patel ( ) B.E- 2 SEM MECHANICAL ENGINEERING LINEAR MEASUREMENTS.
CONSTRUCTING A FIVE CABIN LATRINE
Principles of Surveying
Lesson Applying Profiling Leveling Techniques. Interest Approach Discuss with the students why producers sometimes put drainage ditches in their fields.
REG231 – Basic Land Surveying
Location Surveys I. Traditional Highway Location: 1. field-oriented work 2. *Procedures 1) The first step: Reconnaissance of the area using available topographic.
LINEAR MEASUREMENT.
Patel Tejasvini D.(T-13CL225)
STUDENTS NAMEID.NO.ENROLLMENT NO. MOD. JISHAN KHAN13PES NEEL SUTHAR13PES MILAN LAKHANI13PES GUJARAT TECHNOLOGICAL.
CLASSIFICATION OF SURVEYING
Surveying Techniques I. The USGS supplies 1:24,000 scale maps for all the U.S. But detailed topography at larger scales is rare and/or.
Preparation of wall position Alignment of A and C side in closed position Creation of reference system Translation of reference system to open position.
TECHNIQUES IN BASIC SURVEYING
Chapter (5) Leveling Introduction:
Harry Williams, Cartography1 Elevation: Definitions: Elevation - height above some arbitrary datum; on USGS maps this datum is mean sea level (“0” feet).
ELEMENTS OF CIVIL ENGINEERING (Subject Code )
GUJARAT TECHNOLOGICAL UNIVERSITY BIRLA VISWAKARMA MAHAVIDHYALAYA (ENGINEERING COLLEGE) VALLABH VIDYANAGAR SUBJECT: ELEMENTS OF CIVIL ENGINEERING (CODE )
Chapter 16 Site Preparation. Objectives After reading the chapter and reviewing the materials presented the students will be able to: Identify tasks required.
Lecture 15 - Timber Wall Framing Example
Lesson Applying Differential Leveling Techniques.
Topic : Theodolite Traversing
SURVEYING PLANE TABLE SURVEYING 1. 2  Plane Tabling is a graphical method of surveying in which the field work and plotting are done simultaneously.
PLANE TABLE SURVEYING SURVEYING – I
INSTRUMENTS USED IN PLANE TABLE SURVEYING.
Civil Department. GROUP MEMBERS GROUP MEMBERS:- ENROLLMENT NO. NAME OF THE STUDENT BURHAN ADENWALA PRIYANK AGRAWAL TAMANNA.
CIVIL DEPRATMENT.
CAISSON FOUNDATION.
Made by- Civil 3rd semester
The main object of shore line survey is to prepare a topographical map of the shore line.
VARIOUS METHODS OF PLANE TABLE SURVEYING
GOVERNMENT ENGG. COLLEGE B.E Semester III :- Civil Engineering
SANKALCHAND PATEL COLLEGE OF ENGINEERING, VISNAGAR PLANE TABLE SURVEYING PREPARED BY: PATEL AVANI B PANDYA RUCHA H CHAUHAN.
CIVIL DEPRTMENT  Introduction :  The process of laying out engineering projects by placing pegs Or marks at the site of works is known as setting out.
Construction Surveys. List of Figures Stages and Measurements of CS Design stages: topographic Surveying, and site maps Construction stage: Setting-out.
Mr. Vedprakash Maralapalle, Asst. Professor
FACULTY OF ENGINEERING TECHNOLOGY AND RESERCH, TAJPORE, BARDOLI CIVIL ENGINEERING DEPARTMENT SURVEYING ( )
CURVES IN ENGINEERING.
Chapter (5) Leveling Introduction:
Surveying 1A (SVG 105) PLANE TABLE SURVEYING
LEVELLING AND CONTOURING BY:- ANAND R. JIBHAKATE CIVIL ENGINEER 1 1.
Mr. Vedprakash Maralapalle, Asst. Professor
Plane table surveying with contouring
THEODOLITE TRAVERSING BY S N Nanaware
Rectangular Coordinates Level control in trenches
Angles and Directions.
Topographic Survey Introduction „ Mapping surveys are made
Topographic Survey Introduction „ Mapping surveys are made
Leveling.
Tachometry.
Leveling.
Angles and Directions.
Leveling.
Leveling.
Leveling.
Leveling.
Presentation transcript:

GOVERNMENT ENGINEERING COLLEGE RAJKOT CIVIL DEPARTMENT SURVEYING Guided by: Prof. A. K. Gojiya

Group C1 Presentation Of “ Setting out works ” Submitted To: Prof. A. K. Gojiya Submitted By: Group C1

Member of Group C1 EN.NO. NAME 130200106001 AJANA MAHIPAT RANABHAI 130200106003 BHIMANI ATIK AMIN 130200106004 BHIMANI KETANKUMAR 130200106005 BHORANIYA ASHVIN MANSUKHBHAI 130200106006 BORKHATARIYA JIGAR 130200106007 CHAUDHARI ABHAY PURUSHOTTAM 130200106008 CHAUDHARI FALGUNKUMAR 130200106009 CHAVADA HITESHKUMAR DANABHAI 130200106010 CHAVADA SAGAR 130200106011 CHOVATIYA MILANKUMAR 130200106014 GANVIT GAURANGKUMAR 130200106015 GAUSWAMI CHIRAGGIRI SUBHASHGIRI 130200106016 GOHEL MAULIKBHAI ARVINDBHAI 130200106018 JADAV AZADBHAI RAYSINHBHAI 130200106019 JADEJA RAJDEEPSINH VIRBHADRASINH 130200106020 JAIMIN GODALAKA 140203106004 DODIYA RAHUL MEPA

Introduction Setting out is the process of transferring the distance from the plan already prepared, to the ground before starting a construction. The plan as designed and prepared is set out on the ground in the correct position. The branch of surveying dealing with the setting out on the ground is known as construction surveying.

Aims :- -Understand the roles of the various different types of personnel who are involved in the setting out process -Understand the aims of setting out -Refer to the different types of plans that may be used in the setting out process -Appreciate the good working practices that should be undertaken in order that the aims of setting out can be achieved -Understand the procedures required to ensure that the horizontal and vertical control requirements of setting out operations can be met -Set out design points on site by a number of methods -Apply horizontal and vertical control techniques to second-stage setting out operations -Appreciate the application of laser instruments in surveying and setting out

The setting out of work require the following two controls : Horizontal control Vertical control

Horizontal control It consist of establishing reference marks of known plan positions from which horizontal distances are measured for setting out. The control points are generally used to establish a base line near one face of the structure. The setting out is done by taking measurements from the base line.

Horizontal control can be achieved by establishing reference grid. The grid which is used for actual setting out of the salient points of the structure. If the structure has a large number of structural component , another grid is called the structural grid having points at a closer spacing is established.

Vertical control It consist of establishment of reference marks of known height relative to some specified datum. The levels of the various points of the structure are measured from the vertical control points A master bench mark is used to established a number of transferred bench marks or temporary bench marks.

SETTING OUT A BUILDING The foundation plan of the building is usually supplied or it can be prepared from the given wall plan of the building and size foundations for different wall. Setting out of a building involves the transfer of the foundation plan frim paper into the actual size. The object of setting out a building is to provide the builder with clearly defined outlines for excavations.

The equipment required for the job are : A 30 m steel tape Two metallic tapes (15 m or 30 m) A long cord A plumb-bob Stakes or pegs Nails A hammer

It is of litter use to set the pegs or stakes at the exact position of each of the corners of the building as they would be dug out while excavating the foundations. It is therefore advisable to first set out a reference rectangle either out side the limits of the excavation or along the centre lines of the outside walls of the building and then to locate each centre by means of co-ordinates with reference to the sides of this rectangle.

Both the methods of forming reference retengle and setting out the building are descibed below. 1. Setting out building by circumscribing rectangle 2. Setting out building by center-line-rectangle

1. Setting out building by circumscribing rectangle Since stakes cannot be set at the exact corner points of a foundation plan, these are fixed at the corners of a bigger rectangle circumscibing the actual foundation pian. Any suitable distance of the outer rectangle from the center line of the fundation plan can be chosen, but a distance of usyally 2 to 4 m is considered to be ideal. The actual procedure consists of the following steps :

1) Preparation of the foundation trench pian showing the width of the foundations for various walls. 2) Temporary pegs are driven at the actual corner points of the foundation plan. 3) Then using these pegs as refernce, a parallel line, say PQ of required length is set out at a arbitrary selected distance from the actual center line. 4) A cord is stretched between the pegs P and Q. At P, a line is set out perpendicular to PQ. On this line, the position S is marked by setting a peg.

5) Step (4) is repeated at point Q so as to obtain point R. 6) Having now set out the reference rectangle PQRS, the actual corners can be marked using the sides of the reference rectangle PQRS. 7) Once all the points are staked, a cord is passed around the periphery of the rectangle and the actual excavation lines are marked using line.

Checks : In steps (4) and (5), after marking points S and R, respectively, the diagonals QS and PR should be measured. These lengths should correspond to the distances on the plan. After setting out the point R, the length RS should be measured and should be exactly same as that of PQ.

2. Setting out building by center-line-rectangle In this method rectangle formed by the centre lines of the outer walls of the building is used. The procedure consists of the following steps : 1) The reference rectangle formed by centre lines of the out side walls of the building as shown in fig. Is known as center line rectangle. The corners are located by mesuring their co-ordiates with refernce to the sides of this rectangle. The temporary stakes are fixed at these points.

2) Since these pegs are not permanet and will be lost during excavation, the sudes of the centre line rectangle are produced on both the sides and permanent stakes are fixed on each of the prolongations, at a fixed distance, say 2 m, as shown in fig. 3) By using these stakes, the position of any point can be obtained by plotting its coordinates using the reference stakes.

In case of precise working i. e In case of precise working i.e. For important building, a theodolite should be used for setting out right angles. Bench marks should be established in convenient positions away from the site of work so that they remain undisturbed until the work is completed.

Setting out of culverts : Setting out of culvert involves locating the corners of the abutments and the spring walls with respect to the respective centre lines of a road or railway and the drainage nullah, strem, etc. While designing the culvert, the designer uses these centre lines as axes of co-ordinates and their point of intersection is taken as the origin. A detailed tracing of the plan shows the co-ordinate of the corners of abutments and the wing walls in a tabular form.

corner easting northing Sketch and table corner easting northing a O1 1a b O2 2b c O4 4c d O3 3d e 1e f 2f g 4g h 3h Procedure : Set out the line COD; right angle should preferably be set with a theodolite. Stretch strings along the line AB and along the line CD. Set off the distances O1, O2, O3, O4 etc. Take two tapes and put their rings together. Now the other ends of the respective tapes are held at pins 1 on CD and a1 on AB with readings oa1 and O1 respectly. When the common end is stretched, the particular position of the corner a. The other corners of the abutments and wing walls are marked in a similar way. The final outline of each abutment is marked by stretching a chord around the periphery through the marked points. In case of curved wing walls the points on the curve are set out using the method of offsets to the chord.

Introduction Setting out a culvert is simple because there is only one span and the flow of water is less. If the flow of water is more, it can be easily diverted. For bridges, flow of water can not be diverted and length may be very long. Due to above reasons, the setting out can not be carried out from the centre of the bridge. So, it is not easy to setting out BRIDGES

Operations for the Setting out Bridges Preparation of topographic map of the bridge site. Determination of the length of the Bridge. Location of piers.

Preparation of topographic map of the bridge site. Topographic survey of the site and approaches to the bridge is required for long bridges. Tachometric methods are used for the survey work and contouring. Then the map is prepared showing the required information and data.

Determination of the length of the Bridge. The length of the bridge is required to be measure along the centre line. The length of the long bridge is usually determined by triangulation. If the P & Q are the points on the opposite banks on the centre line of the road. To find the length of the bridge following methods are used. a) First method : Triangulation b) Second method : Quadrilateral method

a) First method : Triangulation b) Second method : Quadrilateral method

Location of piers : After the length of the bridge is measured, mark the position of central points of piers along the centre line on the plan. The pier are located by intersections of sight from the ends of the base line by the following methods : a) First method b) Second method

a) First method b) Second method

SETTING OUT A TUNNEL Tunnel surveying consists of two surveys surface survey and underground survey, surface survey done in the usual way. As the terrain near the tunnel is likely to be mountainous and difficult, careful surveying required to get the proper alignment of the tunnel. In setting out tunnels, a major problem is the transfer of surface alignment and levels to the underground tunnel base. The alignment and levels have to be transferred to points several meters below the surface .

The setting out of a tunnel consists of the following operations: Obtaining the alignment of the center line of the proposed tunnel in the usual way. Determination of the correct length of the tunnel. Establishing permanent stations marking the center line of the tunnel.

Transferring alignment: The transfer the surface alignment to a point inside the tunnel the following procedure is adopted.

Make a vertical shaft from the surface to the tunnel Make a vertical shaft from the surface to the tunnel. On the top of the shaft, lay two wooden beams A and B at right angles to the alignment of the shaft. A theodolite is set up at a predetermined station on the center line marked on the ground surface and an another station is sighted, again on the center line it self. The center line is then care fully set up on the beams by repetitive observing and averaging.

Hang two heavy plumb bobs using steel wires from points A and B marked on the wooden beams. You may also keep the plumb bobs in oil or water to keep them from swaying due to minor air flow. The theodolite is transferred to the bottom of the shaft. Align the line of sight of the theodolite with the theodolite with the two wires after a number of trials. Once the alignment is available, mark the points along this direction on the roof and on the ground with permanent markers, drilled in the roof.

Transferring benchmarks: Surface leveling done in the usual way, vertical control points are first established near the site. Local benchmarks are established near the shaft for transferring the levels underground.

The following procedure is adopted. A steel wire loaded with a weight of 5-10 kg is passed over a pulley at the top of the shaft and is then lowered into the shaft. Two fine wire AB and CD are stretched at the top and bottom of the shaft respectively. The steel wire lowered into the shaft is so adjusted that it is in contact with both the wire AB and CD.

Mark this hung wire at the level of the two horizontal wires accurately by a chalk stretch the hung wire fully and keep the horizontal wires taut. The wire is pulled out from the shaft and is stretched on the ground. The distance between the two marks, on the wire, is measured using a measuring tape and this gives the reduce level of the bottom of the shaft. Mark this point.