NSPS CST Level II case studies
NSPS CST Level II · Put your knowledge to work in context.
The Certified Survey Technician (CST) program is a national certification program for survey technicians sponsored by the National Society of Professional Surveyors (NSPS). It is built around four levels of certification offered in two primary tracks - field and office - so a technician can progress along the path that matches the work they actually do, whether that is instrument work and fieldwork or computation, drafting, and records work in the office. The NSPS CST Level II case studies are 5 cases and about 2,149 words.
1Sewer Grade Conflict: Benchmark or Stake Error?
You are the crew chief staking a 1,200-foot sanitary sewer main at 0.50% grade. The contractor's grade checker tells you the invert at station 8+00 is 0.18 ft higher than the plan elevation.
484 words, about 2 min2Found Pipe Versus Record Corner
During a boundary retracement of a 40-acre parcel, your crew finds a 1-inch galvanized iron pipe at the northwest corner. The 1978 record plat calls for a 1/2-inch iron pipe at that corner, and your computed deed position is 0.35 ft east and 0.20 ft north of the found pipe.
444 words, about 2 min3RTK Check Shot Fails Under Canopy
Your two-person crew is mapping a 12-acre wooded parcel for a topographic base. You set the GNSS base on an NGS monument 3.1 miles away and run RTK with a radio link.
392 words, about 2 min4Plat Area Cannot Be Forced to 1.000 Acre
You are preparing a plat for a three-lot subdivision. Lot 1 deed calls: beginning at an iron pin, thence N 00°00'00" E 200.00 ft; thence S 90°00'00" E 300.00 ft; thence S 00°00'00" W 200.00 ft; thence N 90°00'00" W 300.00 ft to the point of beginning.
375 words, about 2 min5Senior Deed Versus Long Occupation
You are resolving the boundary between two rural parcels. The senior deed from 1952 calls for a stone at the northeast corner and a line N 45°00'00" E 600.00 ft to a stone.
454 words, about 2 min