SURCON Professional case studies
SURCON Professional · Put your knowledge to work in context.
The SURCON Professional Examination is the assessment route through which the Surveyors Council of Nigeria admits candidates into the registered surveying profession. SURCON - established following the promulgation of Decree No. The SURCON Professional case studies are 5 cases and about 4,607 words.
1The Displaced Pillar on Plot 14
You are commissioned to prepare a cadastral resurvey of Plot 14 (0.2145 ha) in a government layout. The client shows you a Certificate of Occupancy and the registered plan dated 1994, which lists bearings and distances tied to three concrete pillars.
907 words, about 5 min2The 0.183 m Antenna Height
A six-station static GNSS network is observed for cadastral control in a state capital: dual-frequency receivers, 45-minute sessions, 15° elevation mask, baselines between 8 km and 26 km. Processing and adjustment give horizontal residuals under 18 mm and a loop closure of 1:1,400,000 - comfortably inside specification.
881 words, about 4 min3The Orthophoto That Leans
A UAV photogrammetric block covers a 12 km² flood-risk mapping project: 1,450 images flown at about 120 m above ground with a 24 MP camera, giving roughly 3 cm GSD, with 80% forward and 60% side overlap. Deliverables are an orthophoto and a DSM on a 10 cm grid, with a specification of horizontal RMSE ≤ 0.10 m and vertical RMSE ≤ 0.15 m.
929 words, about 5 min4The 58-Metre Shift in the Parcel Layer
A state ministry's GIS holds a parcel layer digitised from 1:2,000 cadastral sheets that were surveyed on the national (Minna) datum. Overlaid on a 2022 satellite ortho supplied in WGS 84 / UTM zone 32N, the layer shows a consistent offset of about 58 m east and 12 m north - but only in one local government area; parcels in neighbouring LGAs align correctly.
946 words, about 5 min5The Mortgage Plan and the Setback
A client of fifteen years asks you to prepare a survey plan for a bank's collateral valuation. He holds a Certificate of Occupancy for 0.1980 ha, but the bank's valuation assumes 0.25 ha.
944 words, about 5 min