Surveying & Mapping (L1) Flashcards
What must be shown on a map?
Scale
Legend
North arrow
Title
Printers name
It is your responsibility to ensure the map is accurate and liscenced. How do you do this?
Check maps liscence/ copyright.
Compare red line with promap/land insight. Physical site visit with trundle wheel.
Difference between a title plan, location plan, site plan.
WHAT IS A TITLE PLAN?
Registered under the general (physical) boundary. 1:1250-1:2500
Legal boundaries can be difficult to accurately define: they’re a reasonable interpretation of pre-existing deeds. Not definite and errors are subject to rectification.
Difference between a title plan, location plan, site plan.
WHAT IS A LOCATION PLAN?
Proposed development in the context of an area (roads). Up to date. 1:1250.
what does the colouring red and blue denote on a title plan?
Red - ownership
Blue - adjoining land
Difference between a title plan, location plan, site plan.
WHAT IS A SITE PLAN?
Proposed development within a boundary. 1:200-1:500
What is the difference between a legal, party and physical boundary?
Party is when the ownership and maintenance of a boundary is adjoining and can’t be determined.
Legal is precise boundary determined by the Property Chamber Tribunal. Based on Pre Registration conveyancing.
Physical eg a hedge or fence
What is a map?
Plan relating to a specific point in time.
Modern maps can be hard copies or digital copies. What is a digital: RASTOR versus VECTOR?
RASTOR is a basic set map, eg a PDF
VECTOR is a map of interconnecting graphics/ polygons eg a DWG
What issues are there with mapping accuracies?
Scale
Inaccuracy is inherent
Boundaries
Updates
What is a GIS map?
GEOGRAPHIC INFORMATION SYSTEMS.
Map shares data - is communicative (used in urban planning)
What is an OS Map?
ORDINANCE SURVEY MAP
has copyrights. No legal boundaries are shown.
How would you accurately survey a site?
Can use land reg/Promap.
Trundle wheel.
Possibly laser if defined boundaries.
TOPO is most accurate.
What is a Topo?
And accurate and scaled (into CAD) site depiction.
Includes boundaries, buildings, drainage, water channels, site COI tours.
What features can you find on realyse?
OS maps
Environmental/Historic designations
Planning permissions
SHLAA data
Comparable value analysis
What is flood risk? Explain the flood zones.
The likelihood of flooding and associated impacts.
The environment agency maps the flood zones. LLFA police’s them.
ZONE 1- low risk (0.1% annual chance)
ZONE 2 - medium risk (1% chance)
ZONE 3A - high risk (1+% chance)
ZONE 3b - functional floodplain (5% chance - designated for flooding)
What is a land designation?
Historic - listed building
Environmental - AONB/SAC (eg the Chiltern Beechwood’s SAC, Ashridge common had a high number of visitors- 12km zone of influence, moratorium - SANG (suitable alternative green space)
Greenbelt - land use designation to prevent urban sprawl
What is land registry?
Records of land/property ownership and interests. It is not definitive and ppl can lodge objections.
The Land Registration Act 2002 shows an accurate reflection at any point in time.
Define covenant
A-Legal agreement between 2 parties.
Positive - obligation. Not run with land
Negative - restriction in use. Does run with land.
Define an Easement
A legal right to exercise over land. Eh a private ROW.
Created by a Deed and is a binding obligation.
Define a Charge over land
Restriction on land to bind owner to a payment of money. Held over land until released.
What is a RIGHT OF WAY?
Footpath
Bridleway
Restricted bridleway
Byway open to all traffic
