S+SNZ Spatial Measurement case studies
S+SNZ Spatial Measurement · Put your knowledge to work in context.
Survey and Spatial New Zealand (S+SNZ) is a professional association representing members in the survey and spatial sector in New Zealand, describing a diverse and fast-growing membership and the ethos of 'Measuring success together'. Its members work across land development and urban design, resource management, civil engineering surveying, positioning and measurement, cadastral surveying, hydrographic surveying, and the spatial/GIS sector - the same seven areas the Spatial Measurement examination is built around, each carrying roughly the same weight. The S+SNZ Spatial Measurement case studies are 5 cases and about 4,408 words.
1Overland flow path through a medium-density subdivision
A 6.8 ha greenfield site on the urban fringe is being rezoned for medium density: 45 detached lots and 12 duplex units served by a 5.5 m carriageway internal road. The land falls about 14 m over 320 m from south to north.
724 words, about 4 min2Watermain as-built conflict with a gas main crossing
A contractor is laying a 2.4 km DN300 watermain in a road reserve. The design specifies a minimum cover of 0.9 m and a minimum separation of 0.40 m from an existing 100 mm gas main that crosses the route at chainage 1+240.
874 words, about 4 min3RTK GNSS setout on a constrained CBD site
RTK GNSS is being used to set out a 200 m retaining wall and adjacent pad levels on a tight CBD site surrounded by 5 to 8 storey buildings. The base receiver sits on a mark 4.2 km away with a single-base radio link; the base coordinate was derived from an earlier RTK occupation.
906 words, about 5 min4Reinstating a rural boundary where the fence does not match the marks
A 1970s rural subdivision of four lots is being re-surveyed for a boundary adjustment. The original deposited plan shows lot 2 as a 50.00 m by 200.00 m rectangle of 1.0000 ha.
877 words, about 4 min5Dredge volume dispute between pre- and post-dredge surveys
A 120 m wide by 800 m long dredge channel is to be cut to 8.5 m below chart datum (LAT). A pre-dredge multibeam survey and a post-dredge survey are used to compute a payment volume.
1,027 words, about 5 min