Sri Lanka Licensed Surveyor Exam study plan
Sri Lanka Licensed Surveyor Exam · Give each week a clear focus.
8 weeks · About 8 hours per week
Cadastral Surveying and Land Parcel Definition
Map the end-to-end cadastral workflow in Sri Lanka from client instruction through field survey, plan preparation, Survey Department examination and approval, naming the document produced and the responsible officer at each hand-off.
Build a boundary-classification table covering fixed (surveyed and monumented), general (unsurveyed/deed) and natural boundaries such as riparian and coastal limits, and state what evidence governs the location of each.
Compute parcel areas from a supplied six-station closed traverse, calculate the angular and linear misclosure, and compare the result against an accepted rural/urban tolerance.
Assemble a pre-submission checklist of everything a licensed surveyor must verify and certify on a survey plan before it leaves the office.
Your checkpoint
A four-page cadastral procedure pack: one process map, one boundary-type evidence table, and one fully worked parcel area computation with closure check and pass/fail verdict against a stated tolerance.
Cadastral Surveying and Land Parcel Definition & Geodesy, Geodetic Datums and Coordinate Systems
Re-establish a destroyed parcel corner from three surrounding control stations using both bearing-distance intersection and distance-distance intersection, then quantify the disagreement between the two solutions.
Explain how cadastral control networks are densified from geodetic control down to parcel level, and state the accuracy ratio required at each tier.
Construct a comparison table of the Kandawala datum and SLD99 covering reference ellipsoid, origin/realisation, relationship to global frames and typical current use in Sri Lankan practice.
Perform a geodetic-to-grid conversion using a transverse Mercator projection, explicitly applying point scale factor and meridian convergence, and state the sign conventions used.
Your checkpoint
A one-page datum and projection crosswalk plus a worked conversion sheet that takes a latitude/longitude pair to grid easting/northing with scale factor and convergence shown at each step.
Geodesy, Geodetic Datums and Coordinate Systems & Survey Computations, Traverse and Least-Squares Adjustment
Set up and solve both a three-parameter and a seven-parameter Helmert transformation from at least four common control points, reporting residuals at each check point.
Derive observation equations for a closed traverse and adjust it by least squares, reporting adjusted coordinates, residuals, a posteriori variance factor and the full covariance matrix.
Detect and localise a single blunder in a redundant network using standardised residuals and an accepted data-snooping threshold.
Run a chi-square test on the adjustment's variance factor and write a short interpretation of whether the assumed stochastic model is credible.
Your checkpoint
A spreadsheet-based least-squares traverse adjustment workbook containing observations, design matrix, normal equations, residuals, standard errors and blunder test, accompanied by a 300-word interpretation of the results.
Survey Computations, Traverse and Least-Squares Adjustment & Land Law, Survey Statute and Boundary Law
Compare Bowditch (compass) rule, transit rule and least squares on the same traverse dataset and quantify how much the final adjusted coordinates differ.
Summarise the statutory chain governing cadastral surveys: who is competent to survey, what must be lodged with the Survey Department, and the recognised grounds on which a plan can be rejected or returned.
Analyse three boundary-conflict scenarios (encroachment by a structure, long possession under the Prescription Ordinance, and a partition action under the Partition Law) and identify which survey evidence decides each.
Outline the title registration process under the Registration of Title Act and specify exactly what the surveyor contributes to the register (parcel geometry, identifiers, plan reference).
Your checkpoint
A six-page case-note set: three boundary-dispute scenarios, each resolved with a stated survey-evidence argument, the statutory provision relied on, and the plan evidence a court would expect.
Land Law, Survey Statute and Boundary Law & GNSS Positioning and Modern Survey Technology
Draft a survey report structured to withstand cross-examination, covering datum and control, instrumentation, method, achieved accuracy, assumptions and limitations.
Design a GNSS observation plan for a static control campaign and an RTK detail survey, specifying session length, PDOP/satellite-geometry limits, occupation and re-observation rules.
Convert between geocentric XYZ and local East-North-Up coordinates for a GNSS baseline and explain where each frame is used in practice.
List the dominant GNSS error sources - ionospheric and tropospheric delay, multipath, antenna phase-centre variation, orbit error - and the mitigation applied to each.
Explain how network RTK and a national CORS infrastructure work, and define the field checks used to accept or reject an RTK fix before recording a point.
Your checkpoint
A two-page GNSS field SOP with observation plan, PDOP and fix-type acceptance thresholds, an independent check-shot regime, and explicit rejection criteria for suspect fixes.
Engineering and Construction Surveying & Topographic Surveying, Mapping and Cartography
Design a horizontal circular curve and a vertical parabolic curve from given design parameters, computing tangent points, chainages, mid-ordinates and setting-out offsets.
Compute earthwork volumes for a chainage-based cross-section set using mean-sectional-area and prismoidal methods, and explain the direction and size of the discrepancy.
Prepare setting-out data (bearing, distance, cut/fill) for a road or pipeline alignment from a control baseline, including a check procedure for the first three set-out points.
Specify a topographic survey for a stated engineering purpose: scale, contour interval, spot-level density, feature codes and positional accuracy standard.
Produce a map layout that correctly carries scale bar, north point, legend, grid and metadata and that survives reduction to the required publication size.
Your checkpoint
A complete setting-out package for a 400 m road segment: curve data sheet, tabulated setting-out data for at least 11 chainages, and an earthwork volume sheet using both volume methods.
Photogrammetry, Remote Sensing and LiDAR & Land Administration, Title Registration and Land Information Systems
Plan a UAV photogrammetric survey by deriving ground sample distance from sensor and flight parameters, then setting overlap, altitude and ground-control spacing to meet a stated accuracy target.
Trace the LiDAR processing chain from raw point cloud through classification, ground filtering and DEM generation, naming the quality check applied at each stage.
Interpret an orthophoto and DSM pair for a change-detection task and state the evidential limits of that interpretation.
Map the land administration data flow from approved survey plan to title register to LIS/GIS layer, identifying the parcel identifier, plan number and owner key at each step.
Diagnose common LIS data-quality failures - parcel gaps and overlaps, orphaned plan numbers, duplicate identifiers - and propose a remediation sequence.
Your checkpoint
A photogrammetric survey plan for a 50-hectare area at 1:2000: flight parameters, GSD derivation, ground-control layout, an accuracy budget and a deliverable list.
Professional Practice, Ethics and Survey Office Management & Hydrographic and Special-Purpose Surveys
Apply a professional code of conduct to five short ethical scenarios covering conflict of interest, client pressure to shift a boundary, confidentiality of client data, misleading advertising and fee undercutting.
Set up office quality assurance: plan-checking by a second surveyor, records retention, version control of coordinate files, and a competency/training register.
Explain hydrographic survey fundamentals: chart datum, reduction of soundings, tide and transducer-draft corrections, and how IHO S-44 survey orders drive equipment and accuracy choice.
Sit two timed full-length mock examinations weighted to the syllabus percentages and categorise every error as knowledge gap, calculation slip or misread question.
Your checkpoint
A two-page personal exam-day reference sheet (key formulas, datum and projection constants, statutory citations) plus a scored mock-exam error log with a remediation action against each recurring error.
Milestones
Week 2: Closed-book check on Domains 1 and 2: correctly classify six boundary scenarios, reproduce the datum comparison table from memory, and complete a geodetic-to-grid conversion to within 0.002 m of the reference answer.
Week 4: Timed 60-question paper on Domains 1-3 at 90 minutes: score at least 70%, with a least-squares traverse adjustment fully reproduced by hand and every residual signed and explained.
Week 6: Setting-out and mapping test: compute curve and setting-out data for an unseen alignment with no more than one arithmetic error, and produce a map layout that passes a peer checklist for scale, legend, grid and north point.
Week 8: Two full mock exams at syllabus weighting, both scored at 75% or better, with every missed item logged to a domain and closed out before exam day.