Physical Survey or As-in-built Surveying

Physical Survey or As-Built survey.

As-built survey : a survey that documents the location of recently constructed elements of a construction project. As-built surveys are done for record, completion evaluation and payment purposes. An as-built survey is also known as a 'works as executed survey'. As built surveys are often presented in red or redline and laid over existing plans for comparison with design information.
The purpose of the As-Built Survey – also commonly called a Physical Survey – is to show the property “as it is built” at a particular point in time. While a pre-construction survey is performed to document conditions prior to construction work being performed, the As-Built survey is conducted to show the current state of the site at various stages throughout the duration of a project. It also serves as a close-out document to verify that the work authorized was completed to plans and in compliance with all relevant standards and regulations.
An As-built survey builds upon the base map of a project and includes research at local agencies, ground-level topography data, and the documentation of visible site improvements. The advantage of this survey is that the new Base Map can be updated to show the current conditions of the site.
As-Built Survey or Design Survey
Professional surveyors can customize the As-Built survey to suit clients’ needs. An As-built survey can be basic and depict only the level of detail the client requires for a specific phase of the project. Alternatively, the client may request a higher level of detail with elevations and contours, street cross sections, and detailed sketches of sewer and storm drain depths and pipe sizes.
The As-Built survey can be expanded to a more comprehensive Design Survey, which includes mapping of existing underground utilities based on review of agency and service provider documentation. This survey is detailed enough to be used for civil design purposes by engineers or architects throughout development.
This provides clients with accurate As-Built surveys that show exactly what has been completed by a certain date. This can be a valuable project management tool to adjust construction schedules as required and can also be used to plan subcontractor work schedules and payments.
PROFESSIONAL SURVEYORS can provide the full range of surveying services that may be required at various times during construction PROJECTS.