Monitoring Surveys – Pre-loading
As part of the land development process, RPC Land Surveyors often work with Geotechnical Engineers to address various geotechnical issues that may be present on a site. An example of this is a monitoring survey RPC Land Surveyors are conducting at 52 Wilson Road, Waihi Beach, to determine the amount of pre-load settlement. The Preliminary Geotechnical Assessment Report for the site concluded that 270mm to 730mm of settlement could occur as a result of the construction of a proposed commercial building.
To address this, the area of concern has been pre-loaded with a mound of fill 3 metres high by 30 metres wide by 90 metres long to work as a temporary weight to compact the site over time. 11 steel rods were placed vertically in the mound to act as monitoring points while the land settles. Over the 4 months that RPC Land Surveyors have been surveying the rods to date, the site has settled by up to 120mm in some locations. When the Geotech Engineer is satisfied that the site has settled to an acceptable level, the pre-load mound will be removed, and the construction of the building can commence. The amount of settlement that is occurring on this site is proof that geotechnical investigations and measures are critical in ensuring that a site will be fit for purpose. Monitoring surveys are an important part of this process so that all parties can be informed as to what is occurring on site.
At RPC Land Surveyors, we specialise in monitoring surveys, site settlement surveys, and geotechnical support as part of the wider land development process across New Zealand. Our experienced surveyors work closely with Geotechnical Engineers to provide accurate data that ensures every site is stable and ready for construction. From pre-load monitoring to as-built surveys and construction set-out, our team delivers precise, reliable surveying solutions that help developers, engineers, and project managers make informed decisions and achieve successful project outcomes.
Pre-load mound
Monitoring rod