What must surveyors record regarding survey control permanent markers?
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Control point hierarchy, accuracy and name, plan coordinates and grid, height value and datum, type of marker, photograph of marker and location, and a sketch or plan with dimensions.
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What must surveyors record regarding survey control permanent markers?
Control point hierarchy, accuracy and name, plan coordinates and grid, height value and datum, type of marker, photograph of marker and location, and a sketch or plan with dimensions.
What additional detail might be required for height specifications?
Spot heights, annotations, 3D graphics or other.
What is included in the registered point cloud deliverables?
Intensity, color (RGB values), viewer format (intensity), and viewer format (color).
What visible boundary features are required to be surveyed?
Walls, fences, hedges, gates, walls with type and height, wall buttresses, cadastral features, and trees.
What does the accuracy band indicate in a survey?
The level of precision required for the surveyed features.
What should be included in a survey control report?
A summary of the survey control outputs combined with supporting files.
What is the requirement for tanks/storage chambers?
Outline only (√).
What is the minimum trunk girth for individual trees to be surveyed?
Greater than 74mm, measured at 1m above ground level.
How should results be tested when using higher specification equipment?
Against the accuracy of the equipment used, not the specification.
What does IPMS stand for?
International Property Measurement Standards.
How can measured building surveys and topographic surveys be utilized?
Both types of survey can be combined if necessary.
What should be specified for unmade tracks and paths?
Centre only, or sides required.
What additional features may be surveyed if specifically selected by the client?
Internal roof and ceiling structure, under floor details, and any additional feature detail specified.
What fitting out features are not typically surveyed at all accuracy bands?
Cupboards, false ceilings, and fixed furniture.
What is the purpose of the comments section in the detail requirements?
To provide any additional information or clarification regarding the details required.
What is a recommended good practice for surveying railway features?
Surveying at specified intervals.
What should be established to verify the accuracy of surveyed detail in dynamic survey capture?
Specific survey control points local to the survey extents.
What height detail could be included in the survey?
Spot heights, annotations, 3D graphics, or other specifications.
What features are typically required in a survey?
Points and crossovers, power masts, signals, refuges, signs, telephones, TV monitors/cameras.
What is required for staked saplings in a survey?
Tree numbers, tree heights (estimated and measured), tree spread (canopy diameter), tree trunk girth at 1m above ground, and tree species.
Which feature is required for pedestrian crossings?
Tick (√).
How should survey control points taken from existing features be recorded?
In the same manner as survey control markers.
What types of water features require levels to be shown on drawn plans?
Watercourses (drains, ditches, streams, rivers).
What types of features are required to be surveyed according to statutory authorities?
Air valves, cable TV inspection covers, cabinets, electricity covers, electricity poles, fire hydrants, inspection covers/manholes, gas/water stop valves, water meter or gas meter covers, marker posts, surveillance cameras, telecoms inspection covers, telegraph poles, and telephone call boxes.
What is required for roofs if requested?
Details such as chimneys (outline only), drainage features, and fire escapes (outline only).
What features will only be surveyed if specifically selected by the client?
Cable TV house points, pole stay wires, lamp posts, and additional feature details.
What is required to be surveyed for bodies of water?
Top of banks and bottom of banks.
What type of features are surveyed if specifically selected by the client?
Floor/threshold levels, individual steps, and ramps.
What is common for high precision height datum establishment?
Use of specialist markers that may require specific adapters.
What additional detail can be specified for height features?
Spot heights, annotations, 3D graphics, or other.
What additional detail can be specified for overhead wires in the survey?
Whether building connections need to be shown.
What is included in the mandatory survey control outputs?
Survey control coordinate list and survey control photographs.
Which fitting out details are typically required in a measured survey?
Partitions and raised floor/changes in floor level.
Which features will only be surveyed if specifically selected by the client?
Railway lines, height gauges, rails, gradient posts, grease points, grit bins, point rods, track markers, check rails, non-ducted cables, points box/lever.
What should surveyors and clients refer to in addition to the listed features?
Their national and/or regional rail survey specifications.
What risk does a surveyor face if control surveys are not properly conducted?
The risk of having to recompute the detail survey if a subsequent error is found.
What feature is surveyed where exposed?
Foundations.
What is the primary order plan control accuracy for distances up to 100 meters?
+/- mm.
What is the significance of accuracy bands in surveying?
Accuracy bands determine the level of detail required for different features.
What is mandatory to submit for review before processing survey detail?
Survey control observation adjustment and survey control levelling observations and reductions.
What additional detail could height information include?
Spot heights, annotations, 3D graphics or other.
What is the significance of Gross External Area (GEA)?
It represents the total area of a building including external walls.
What must be defined in survey control outputs when requested?
Survey control grid and datum definitions and transformations between other systems.
What is a recommended practice for locating survey control points?
Ensure they are in stable locations with good intervisibility to other points on the network.
What should clients review to select specific features for survey?
The survey detail accuracy band table in section 2.
What features are typically surveyed in a tree survey?
Woodlands perimeter trees, bushes/shrubs, individual trees, isolated trees, ornamental/roadside trees, edge of vegetation, and areas of saplings/young trees.
Why is it useful to plan the survey control network in advance?
To reconcile constraints and ensure the intended survey control network and method of installation are clear.
What is the surveyor's role in selecting survey control marker types?
The surveyor shall use discretion to select the most appropriate marker type for all survey control points.
What type of deliverable includes registered point clouds with RGB values?
Registered point cloud (colour – RGB values).
What is the requirement for crash barriers in the survey?
Crash barriers are required and noted with an accuracy band of IP 30.
What should clients do if certain features are not required for a specific survey?
They can remove the tick from the relevant box.
Are road markings typically surveyed at all accuracy bands?
No, they are only surveyed if specifically selected by the client.
What types of areas are mentioned for detail requirements?
Car parking, curtilage, pathways, gardens, roof terraces, swimming pools, ponds, play areas.
What is the importance of using appropriate equipment and techniques in survey control network plan accuracy?
To achieve the required accuracies and avoid gross or systematic errors.
What additional details are requested for internal roof spaces?
Hatches, services, tanks (outline only), and trusses size, spacing, and alignment.
What is the purpose of the accuracy band in section 4.1?
To specify the required accuracy for measurements.
What is recommended good practice regarding surveyed features?
Clients should add additional features and comments if required.
What types of heights/levels are annotated in section 4.3.3?
Arch heights, beam soffits, ceiling heights, floor levels at the center of each room, and floor levels at stairs.
What document is under review due to the production of IPMS?
RICS’ Code of measuring practice.
What happens at each increase in accuracy for measured building surveys?
More details can be shown.
What additional feature detail can be specified?
Any detail not requested above.
What type of details should be indicated with broken lines in a survey?
Floor levels.
Which feature is required for surveying according to the document?
Bank bottom, Bank top, Hilltops, depressions and saddles (spot heights), Mounds, spoil heaps, Quarries, pits and mineral workings.
What additional information can be specified in the cross-section features?
Additional feature detail not requested above and other specifications.
What hierarchy is followed to achieve height accuracy in a survey control network?
The client and the surveyor.
What features are typically not surveyed unless specifically requested by the client?
Fire equipment, lights, pipework, plant, radiators, risers, service intakes, sprinklers, switches/sockets.
What overhead features are included in the survey?
Canopies, porches, etc.
What standard should trees be surveyed to in the UK?
BS 5837:2012 or equivalent national standard.
What should be specified for internal roof spaces?
Ceiling joists size, spacing, and alignment.
What is included in the list of required railway features?
Ballast shoulder, buffers/stop blocks, cabinets, switch boxes, cable ducts, catchpits, cess limits, electrified rails, gantries, signal boxes, huts, mile posts, and platform furniture.
What is the significance of accuracy bands in surveying?
They indicate the level of detail required for different features.
What types of temporary/mobile buildings are required for surveying?
Garden sheds, greenhouses, mobile buildings, and temporary structures.
What is the minimum plan accuracy specified for adjacent points less than 100 metres apart?
+/- mm.
What additional features may be surveyed if specifically selected by the client?
Floor levels at doorways, floor levels in corners of each room, and heights of other specified features.
What should the surveyor ensure before processing survey detail observations?
That the required accuracy and suitability of survey control points and observations have been met.
What should clients and surveyors ensure regarding permanent marker requirements?
Any constraints in certain environments should be reconciled with the survey control permanent marker requirements and locations.
What is the purpose of measuring the high water mark?
To establish a reference point for water levels, including the date.
What is one of the permanent structures that should be surveyed?
Archways, underpasses, culverts.
What is required for the accuracy band in cross-section features?
It should be specified if different from the band stated in section 4.1.
What does 'height' refer to in the context of surveying?
Dimensional information, such as the physical distance from a floor level to the top of an arch.
What features will only be surveyed if specifically selected by the client?
Features below the typical accuracy bands.
What is the purpose of the blank table mentioned in the document?
For completion by the client.
What is the requirement for cable tracks/ducts?
Outline only (√).
How should a digital terrain model (DTM) be defined?
The spacing/resolution of surveyed detail points must ensure any interpolated point is correct within twice the specified accuracy band.
What detail is required for inspection covers, gullies, ducts, and conduits?
Spot levels (√).
Which street furniture features are required to be surveyed?
Belisha beacons, barriers, bollards, bus stops, and bus shelters.
What is included in the height detail for surveyed features?
Spot heights, annotations, 3D graphics, or other specified details.
What should be considered when placing permanent survey control markers?
They should not present a health and safety hazard or cause damage to property or equipment.
What should be done with individual trees and bushes in the survey?
They should be numbered with details provided in a schedule.
What does the survey detail accuracy band table indicate?
The size of detail that can be surveyed true to scale for each accuracy band.
What happens if BS 5837:2012 is required for a survey?
The requirements of the standard will override any conflicting requirements.
What is the purpose of identifying service covers in the survey?
To annotate and identify them based on appearance.
What should the client confirm regarding survey features?
Features to be surveyed at a different accuracy band or that are not to be surveyed.
What should be surveyed from the bank where possible?
Bottom bank below water level.
What must all surveys be connected to?
A local and/or national grid system.
What dimensions are important for pipes and culverts?
Diameter, invert, and soffit levels.
What is the purpose of specifying features in a survey?
To determine required details and accuracy bands for surveying.
What detail is required for elevations in section 4.6?
Elevations should be shown in outline only.
What should be specified for additional features in external areas?
It is recommended to use section 3 (Topographic survey).
What does 'level' refer to in surveying?
A value derived from an agreed datum.
What is the accuracy band for gullies and kerb outlets?
Required (√).
What should the deliverable type column define?
The generic output format such as CAD, point cloud, report, etc.
What should clients do if they want to remove features from the survey list?
Remove the tick from the relevant box.
What should be recorded when using mobile survey capture systems?
The trajectory path and adjustment files of sensors.
What is the purpose of Section 3 in relation to measured building surveys?
To deal with the survey of the surrounding area and the provision of external control.
Which feature is indicated as having a specific accuracy band requirement?
Inspection covers/manholes with level.
What does the survey control tie-in report show?
Connections to existing survey control and misclosures or changes to legacy values.
What is the purpose of the topographic survey section?
To specify which topographic survey features will be surveyed and to what accuracy band.
Where can clients and surveyors find guidance for surveys of historic buildings?
In the Metric survey specifications for cultural heritage (2009, English Heritage).
What may incur additional costs in measured building surveys?
Survey features noted captured at bands B and C.
What is required for survey control taken from existing site features?
It should be of sufficient stability and definition to allow verification of accuracy requirements.
Who is responsible for the maintenance of survey control points post-installation?
The client shall take full responsibility.
What feature is required for junction/control boxes?
Ticked (√).
When should verification and update of survey control be allowed?
At various stages in a project life cycle, including prior to setting out and construction works.
What types of structures should be surveyed in relation to water features?
Floating structures, booms, and ornamental water features.
What structural elements are typically required in a measured survey?
Beams, ceilings, columns, doors, floors, steps/stairs/ramps/lifts, walls, and windows.
What type of sites are mentioned in the document?
Industrial sites (e.g., treatment works, oil refineries).
What should be supplied by the client when using existing survey control points?
A similar list of information defining the existing survey control points.
What additional feature detail may be required for tree surveys?
Additional feature detail not requested above (specify detail required).
What is required for detailing ridge lines?
Tick or untick for detail required.
What is recommended when tying into national grid or global survey control?
Include observations to sufficient numbers of national or global survey control reference points.
What should be specified if additional feature detail is required?
The specific detail needed should be specified.
What are the measured building survey features to be surveyed?
Measured surveys of land, buildings, and utilities.
What should clients and surveyors refer to for investment valuation and property agency?
RICS’ Code of measuring practice.
What is required for detailing external features?
Tick or untick for detail required.
When should survey control be computed in relation to detail observations?
Before computing detail observations.
What features will only be surveyed if specifically selected by the client?
Direction of water flow and time of survey for waterline/level.
What type of surveys are mentioned in the document?
Measured surveys of land, buildings, and utilities.
What is the significance of the datum specified in section 2?
It serves as a reference point for all height and level measurements.
What intervals should hard bed levels be surveyed at?
[...] m intervals.
What types of bed levels are surveyed?
Hard bed levels and soft bed/silt levels.
What is the significance of gauge boards in surveys?
They relate readings to survey height datum.
Are posts required in the survey?
Yes, they are ticked (√).
What should be shown on cross-section drawings according to section 4.5?
External building face, principal heights, structural members, and additional feature details.
What feature is required to be detailed at the plinth line?
Buildings/structures.
What should be identified and selected by the client regarding specialist requirements?
Features not classified above.
What additional detail can be specified for height features?
Spot heights, annotations, 3D graphics, or other details.
At what level should railways be surveyed?
At sleeper level.
What additional feature detail may be included in the survey if requested by the client?
Gate direction of opening, heights of features, and other specified details.
Which water feature is indicated to be surveyed at specific intervals?
Watercourses.
Which features are included in the survey related to access?
Ramps and loading bays.
What is the significance of specifying heights of features in the survey?
Height detail could include spot heights, annotations, 3D graphics, or other specifications.
What structures related to flood management need to be surveyed?
Flood defence structures and flood/lock gates.
What additional detail might be required for heights of features?
Spot heights, annotations, 3D graphics, or other specifications.
What is the status of surveying waste pipes?
Only surveyed if specifically selected by the client.
What height details could be included in the survey?
Spot heights, annotations, 3D graphics, or other specifications.
What should be confirmed based on pre-analysis of locations and observation geometry?
The expected accuracy of the survey control network.
What additional feature detail can be specified in a survey?
Any detail not requested above.
What is required for all surveys according to the specification?
All surveys shall be connected to a local and/or national grid system.
What should clients consider if higher accuracies are required than initially anticipated?
The need for densification or improvement of survey control.
What is the required resolution for sketches or plans of survey control points?
To 1 cm resolution.
What is essential before computing detail observations in a survey?
The control must be systematic, gross error-free, and conform to accuracy specifications.
Which feature is required for aerials?
Tick (√).
What details are required to be shown on floor plan drawings?
Main room dimensions, room areas, room volumes, Gross External Area (GEA), Gross Internal Area (GIA), Net Internal Area (NIA), IPMS 1, IPMS 2, IPMS 3.
What features are typically surveyed for pitches/recreation?
Pitch/playground limits, pitch markings, goal posts, playground apparatus.
What is the purpose of specifying accuracy bands?
To indicate if the accuracy band is different from the one stated in section 4.1.
What is the purpose of the tables that follow in the document?
To provide a list of features to be surveyed.
Which railway feature is indicated as requiring specification?
Stations/platforms.
What does the measured building survey section refer to?
The internal and external survey of standing buildings or structures.
Which features will only be surveyed if specifically selected by the client?
Flood lights, water taps/stand pipes/troughs, earth rods.
What additional survey work is required for a Tree Survey to BS 5837:2012?
Survey of all individual trees with trunk girth greater than 74mm.
What does the height detail include?
Spot heights, annotations, 3D graphics, or other.
What is the purpose of the International Property Measurement Standards (IPMS)?
To define important concepts of space.
What hierarchy should be established for survey control?
From primary to secondary to tertiary.
What is the requirement for pedestrian barriers?
Tick (√).
Which road features are required for surveying?
Channel line, centre line, camber line on roundabouts, carriageway edge, drop kerbs, and top of kerb.
How are road levels indicated in the survey drawings?
Road centreline, channel, kerb, and pavement levels are shown as text.
Why should the client and surveyor consider survey control accuracy requirements?
For the life cycle of a project, including future phases that may require higher accuracy.
What types of 3D models are required as deliverables?
Wireframe, surface, and solid models.
What is the minimum height accuracy specification for survey control points less than 100 meters apart?
Specified as +/- mm.
Which feature requires spot heights?
Building/structure corners.
What does IPMS stand for?
International Property Measurement Standards.
What is the significance of accuracy bands in surveying?
They determine which features are required and the level of detail needed.
What is the maximum distance between surveyed points used to construct a DTM?
It is specified as optional and left blank for client input.
What is the purpose of permanent survey control markers?
To define the grid and height datum over the geographic extents of the survey area and enable verification of detail accuracy.
What feature is required for traffic calming?
Speed humps/tables/traffic calming features (√).
What is required for changes of surface material?
Both hard detail and soft detail (√).
What features are surveyed only if specifically selected by the client?
Overhead features, canopies, porches, and additional feature details.
What happens to details smaller than the specified size in the accuracy band table?
They will be generalised or symbolised.
What is the default topographic survey detail accuracy band for the project?
To be confirmed by the client.
What types of deliverables are confirmed in the measured building survey outputs?
Formats such as CAD, point cloud, report, hard copy, image file, video file, spreadsheet, textual data, database, GIS database, building information modelling, wireframe model, etc.
What should the surveyor do after a specified period post-survey completion?
Undertake an inspection and report on the status of survey control points.
What features should be included in the survey related to navigation?
Navigation beacons.
What type of diagram is required as part of survey control outputs?
Survey control network diagram and survey control levelling network diagram.
What types of cadastral features are included in the survey?
Boundary markers, stones, beacons, posts, and stakes.
What types of structures are included under water features?
Piers, jetties, walkways, gantries, landing stages, and bridges.
What is the accuracy band referenced in the document?
It should be compared to the band stated in section 4.1.
What should be done when setting up survey control points for monitoring surveys?
Sufficient primary points should be located outside any zone of influence of expected movement.
What is the minimum requirement for pipes to be surveyed?
Minimum diameter pipe to be surveyed.
What details are required for window specifications?
Specific requirements must be outlined.
What is the significance of the accuracy band in the survey?
It indicates the level of detail required for the survey.
What are 'default features' in a topographic survey?
Features that should be surveyed and presented on a standard topographic survey if present on site.
What types of deliverable formats are mentioned for topographic survey outputs?
CAD, point cloud, report, hard copy, image file, video file, spreadsheet, textual data, database, GIS database.
What is the purpose of the tables provided in the document?
To list features to be surveyed, allowing clients to add additional features if required.
What type of data is included in the deliverables besides point clouds?
GIS, cross sections, long sections/alignments, ASCII data, survey report.
Are mile posts included in the survey requirements?
Yes, they are ticked (√).
What is the recommended practice for establishing survey control points?
Establish primary control over the full extents of the survey, followed by secondary and tertiary points.
What is the default measured building survey detail accuracy band for the project?
To be confirmed by the client.
What is a recommended good practice when aerial imagery is specified?
Clients and surveyors should refer to RICS’ Earth observation and aerial surveys.
What is indicated by a tick in the detail required column?
That the specific detail is required for the survey.
What should clients consider in a Survey Strategy regarding survey control points?
The ongoing need to maintain and replace survey control points.
What is the status of lamp posts in the survey requirements?
Required (√).
What should be detailed in the specification when using specialist marker types?
Specific adapters and requirements for compatibility and usefulness.
What is recommended good practice for survey features captured at bands A, B, and C?
They generally involve additional work and may incur additional cost.
What should the deliverable type column define?
The generic output format for the measured building survey.
What is included in the topographic survey outputs required?
2D topographic survey, 3D topographic survey, 3D/digital terrain model (grid), 3D/digital terrain model (TIN), 3D contours.
Are telegraph/electricity poles included in the survey?
Yes, they are required (√).
What is the requirement for road signs in the survey?
Ticked (√).
Are hoardings required in the survey?
Yes, they are ticked (√).
What features will only be surveyed if specifically selected by the client?
Flagstaffs, street name plates, vent pipes, drainage channels, cellar hatches, coal holes, cycle racks, litter bins, reflector posts, salt/grit bins, seats/benches.
What safety equipment should be included in the survey?
Life rings and life buoys.
What is the status of ticket machines in the survey?
Required (√).
What additional detail can be specified in the survey?
Heights of features or other details.
Are traffic signals required in the survey?
Yes, they are ticked (√).
What is the status of post boxes in the survey?
Required (√).
What is the requirement for notice boards in the survey?
Ticked (√).
Are troughs included in the survey requirements?
Yes, they are ticked (√).
