Measured Building Surveys
Our clients request measured building surveys for a variety of end uses, including:
- Base plans for planning proposals (extensions or modifications).
- Plans required and created for historical purposes, e.g. as a record of a building with full detailed stonework.
- Sections (or internal elevations) of the inside of a building for interior fit out.
- A visual representation of a building before demolition, in order to retain information for planning laws.
- Presentating measured data of neighbouring buildings in order to continue the architectural integrity of a streetscape.
- External elevation drawings in order to offer a precise, integrated view of a new design, planning or space management plan.
Precision measured building surveys are required by construction professionals who seek to record what currently exists in order to update and enhance what is already there.
The gothic Jerome and Carlisle buildings in Liverpool due to become the new Dixie Dean Hotel
How we carry out our measured building surveys depends upon our client's end requirements. Streetscapes and architectural definition are more often than not defined within line drawings using a total station to capture the data. More complex, photogrammetric end requirements mean that our 3D laser scanner is more suitable.
Our surveying team are fully equipped to capture all data required, no matter how idiosyncratic the detail in the subject. At a data-capture speed of 1 million points per second, the point cloud the scanner creates can be presented as a raw data-capture file (showing millions of measured points in high dynamic range (HDR) imaging), or presented as a 2D line drawing in either a DXF file or as a paper plan.
Screen Version of Internal Cross Section of the Cunard Building, Liverpool
Line Drawing of the internal cross section of the Cunard Building, Liverpool
We measure clients internal layouts using a DISTO for smaller properties or by using one of our Leica Total Stations for warehouses and large internal office spaces.
The team at Powers & Tiltman can offer a wealth of experience and wide ranging expertise in accurate internal and external area measurement with these types of surveys being of great interest to the team and back office staff due to the technical knowledge required and the visual impact they make.
Rochdale Fire Station using a P40 Leica ScanStation
Due to their very nature external elevations are one of the most visually stimulating of all the maps and plans we provide and can be sent in a variety of digital formats to the client’s requirements.
Using the Leica P40 ScanStation we can take roof ridge heights to create a plan of a sloping or flat roof, picking up chimney stacks (and their heights), skylights, storm water pipes and waste pipes or any other structural detail required. There is very little need to enter roof space as the scanner can pick up all measurements to requirements in HDR imaging to a distance of 270m. If we must go up, our teams work in accordance with the Working at Height Regulations 2005 (WAHR), working from the ground for the majority of measurements and only entering roof space if there are sufficient safety mechanisms in place.
These types of site surveys support the commercial development of buildings for new or continuous use. They are usually requested to get an understanding of the area makeup or to support the street scene that an architect has in mind. Our emphasis is on accuracy with all complex layout calculations following the Royal Institute of Chartered Surveyors (RICS) Measured Surveys of Land, Buildings and Utilities (3rd Edition).
Frequently Asked Questions
(1) What are external measured building surveys?
Our External Measured Building Surveys are accurate line drawings of the external elevations (walls) and features of a building. Examples of what can be picked up include floor levels, window and door openings (including sills), waste and water down pipes, changes in materials across the façade of the building as well is individual decorative features (such as the odd gargoyle). The external detail of a building can be represented in 2D or 3D formats in a DWG/DXF file or PDF. Check out our measured survey specification to see what data we capture as standard.
(2) What can Measured Building Surveys be used for?
Measured buildings are useful for a variety of end uses such as for:
- Refurbishment, redevelopment, alterations or structural changes
- Sale, acquisition, letting or land registry
- Facilities management or services layout
- Interior design layout
- Modelling, visualisation
- Health & Safety e.g. fire plan
- Rights of light, party wall issues
- Valuation or taxation
(3) What is surveyed on a measured building survey?
Major structural features such as floor levels, doors, down pipes and window openings are accurately positioned so any proposed features can be positioned by an architect onto plans with the confidence that the existing drawing is highly accurate.
(4) How accurate is an external measured building survey?
Extremely accurate, using our P40 ScanStation we can capture measured data from buildings in a point cloud format. A raw point cloud file contains millions of measured points captured in record quick time, it looks almost like a photograph when viewed on screen and from this our CAD technicians can create 2D elevation line drawings of the most intricate, yet idiosyncratic detail on a building. This is not possible with any other type of measuring device and enables developers to keep a record of the integrity of a building.