Measurement Flashcards
Key details of RICS Code of Measuring Practice
The RICS code of measuring practice 2015 is still the best practice document for all measurement exercises expect for offices and residential.
Details uses of GEA, GIA and NIA
Basis of GIA, NIA and GEA (Exclusions)
GIA uses
Industrial and Retail Warehouse, resi
NIA uses
Retail and offices
GEA uses
Town planning, council tax valuations, building costs estimates
What % of GIA is NIA
10 to 15%
% of GEA to GIA
2- 5%
GIA exclusions
Canopies
Fire escapes
Covered ways
Mezzanine with out permanent access
GIA Inclusions
Columns, stairway voids, internal walls
ancillary office, mezz without permanent access
NIA inclusions
Atria
Notional lift lobbies
Kitchens
Built in cupboards and the like occupying usable areas
non structural walls
ramps and step areas stated separately
NIA Exclusions
Terraces
Balconies
WCs (non customer)
Plant and lift rooms
Stairwells
areas less than 1.5m
permanent circulation area
Eave height
Floor and lowest point on the under side of the roof
Site depth
The measurement from the front to rear boundaries
shop depth
The measurement from the notional display window to the rear of the retail area, include thinckness of window
Gross frontage
The overall external measurement of the frontage from outside of external walls of centre line of party walls
Net frontage
The overall frontage of the shop line measured between the internal face of the external walls
measurement of land
Promap, land reg or trundle wheel
acre to hectare conversion
1 acre is 0.4046 hc
building line
This is a line within or coinciding with the property line beyond which it is illegal to build
location plan scale
1:2500
Leas plan scale
1:100/250
Room plan
1:50
RICS Professional Statement: Property Measurement 2018
The global RICS led initiative introduced mandatory international property measurement standards and practices with the aim of reducing inconsistent definitions of measurement in different countries and bring greater transparency. Members are encouraged to report on a dual basis until IPMS is imbedded in market practice. Members are expected to advise their client on the benefits of IPMS, however if its not used then the reason must be recorded.
Principles of Measurement (Professional Statement)
Date of measurement
Methodology
Reference to plans
Scale
Conversion factor
Documentation of calculations
Advise benefits of IPMS3
Mandatory to provide IPMS for office and residential
Appendix A tolerance
Reasonable tolerance
Professional statement states a tolerance of +/- 25mm for a sale of 1:100
In practice we have adopted 0.5%
IPMS in office buildings
ipms1 - GEA
IPMS2 - GiA
IPMS3 - NIA
IPMS1
Measuring the area of a building including external walls
IPMS2
used for measuring the interior of an office to include all areas availble for direct use, measured to IDF
IPMS3
Used for measuing occupation of a floor area in exclusive use using IDF assumption
Difference between NIA and IMPS3
IDF
no exclusions for areas under 1.5m
columns excluded
Multiple occupiers - midpoint of partition wall
Terraces and balconies measured and stated separately
IPMS All buildings
rics not adopted yet
consistent methods across all buildings
if and when adopted it will replace prof statement