BASIC LAND SURVEYING

DESCRIPTION

The course covers levelling and total station instrument use and adjustment, misclose distribution, Angle-Bearing-Angle conversion and revision of trigonometry concepts. Introduction to coordinates and explanation of the common survey computations for close and area are also covered.

COURSE CONTENT

Introduction

• What is land surveying? Explain Plane & Geodetic Surveying. Field & Office Work. Use of surveying for boundary definition, for construction, horizontal control & vertical control
• Engineering, cadastral, hydrographic & photogrammetric Surveys.

Principles of Surveying

Concept of point location by:

• Trilateration
• Offsets
• Traversing
• Intersection

The Surveyor’ Work

• Verify/establish horizontal & vertical controls
• Location/ refixing the positions of boundary marks in a cadastral survey
• Carry out a topographical survey
• Horizontal & Vertical monitoring of structures, dams, tunnels etc
• Carry out a pre-computation for a setting out survey
• Setting out building corners, roads, drains etc

Equipment

• Measurement of distance: tapes, chains, edmi
• Measurement of angles/bearings: theodoites, total stations, robotic system
• Measurement of N,E,Z coordinates: GPS, Total station

Field Procedure

• Working from whole to part
• Recce
• Planning & obtaining datum for survey
• Observation & recording

Horizontal Control Survey

Establishing horizontal controls using total station &./ or GPS

• Controls for setting out/traverses
• Concept of true north, grid north, bearings, angles etc
• Linear measurement with tapes, chains, edmi
• Accuracies & errors in linear measurements
• Method of measuring angles, bearing & their associated errors & accuracies

Traverses

• Open & close traverses
• Datum to commence survey
• Cadastral survey traverse & connection to ISN marks

Computations

• Linear Misclose
• Precision & Accuracy
• Adjustments: Bowditch Rule, Transit Rule & Least Square
• Calculate setting out data
• Calculate area & volumes
• Calculate clearances, distance, angles, coordinates

Vertical Control Survey

Ordinary levelling:

• Basic knowledge & Equipment
• Principle of finding
• Booking, calculations & checks
• Accuracy, precision & errors
• Adjustments

Perrmanent adjustment

Applications of levelling:

• Long & cross sections
• Contouring
• Setting out proposed levels
• Monitoring of settlement markers

INSTRUCTOR

SOLID CORPORATION TRAINER TEAM

FACILITIES

Facilities of course :

ü  Certificate,

ü  Hand Out,

ü  Quality Training Kit ,

ü  Quality Training Material (Hardcopy And Softcopy)

ü  Convenient Training Facilities At Stars Hotel, Lunch & 2 X Coffee Breaks,

ü  Souvenir.