Measurement Flashcards
Can you explain what GIA is?
Gross Internal Area is the area of a building measured to the internal face of the perimeter walls at each floor level.
When might you use GIA?
- Building cost estimation.
- Estate agency and valuation.
- Calculation of service charges.
What is NIA a measurement of?
Net Internal Area is the usable area within a building measured to the internal face of the perimeter walls at each floor level.
What is GEA?
Gross External Area is the area of a building measured externally at each floor level.
Includes:
- Perimeter wall thicknesses.
- Areas occupied by internal walls.
- Columns, piers, stairwells, lift-wells and the like.
When might you use GEA?
- Town planning – basis of measurement for planning applications.
- Rating and council tax.
- Building cost estimation – Preferred method for costing of residential buildings for insurance purposes.
What is cubic content?
The product of Gross Internal Area multiplied by internal height.
What is clear internal height?
The height between the structural floor surface and the underside of the lowest point of the structural ceiling or roof.
What is the difference between metric and imperial measurements?
- Metric is generally used in the UK (metre, millimetre, gram, litre etc.)
- Imperial measurements are generally used in the USA (mile, yard, foot, inch, pound, gallon etc.)
What is IPMS?
- IPMS stands for the International Property Measurement Standards.
- The IPMS is a coalition of 80 global professional organisations that was first formed in 2013 when it produced its first version of its measurement standards.
- There were various versions of the standards that are targeted at industry specific sectors such as: - o IPMS Office. o IPMS Residential. o IPMS Retail.
- IPMS All Buildings was introduced in January 2023 and now supersedes all previous standards.
- The RICS has been a pivotal member of the coalition since its inception and provided consultation and advice to its members.
What is IPMS All Buildings?
- Provides one shared international standard for property measurement.
- Supersedes all previous editions of IPMS.
- IPMS have the flexibility to measure only part of a building or to holistically measure all the areas in the building and allocate these areas into separate components.
- Applicable to all types of buildings regardless of their use.
- Effective from 15 January 2023.
What are the requirements for using IPMS?
- RICS members are to advise their clients on the benefits of using IPMS.
- It is understood that IPMS may not be suitable for all circumstances.
- RICS members must document their reason for departure from IPMS.
- Adopting IPM terms when calculating or reporting the area of office and residential floor space on an IPMS basis is mandatory.
What are the different parts to IPMS All Buildings?
- IPMS 1 – External – the floor Area for all or part of a Building measured to its external boundary
- IPMS 2 – Internal – the floor Area for all or part of a Building measured to its internal boundary
- IPMS 3A – Exclusive Occupation External - the Floor Area available on an exclusive basis to an occupier measured to the external boundary of the Building
- IPMS 3B – Exclusive Occupation Internal - the Floor Area available on an exclusive basis to an occupier and where appropriate, measured to the internal boundary of the Building
- IPMS 4A – a selected measured Floor Area which includes internal Walls and Columns
- IPMS 4B – a selected measured Floor Area which excludes internal Walls and Columns
How would you calculate the area of a room if you are undertaking the measurement?
Measure length and width of room (from internal dominant faces) and multiply them.
Can you explain why it is important that buildings are built within the required tolerances?
- To ensure that buildings are structurally sound.
- Buildings built out of tolerance may present difficulties when fitting out and attaching components.
What limitations may you encounter with a 3D scanner when measuring?
- Potentially more time consuming to collect and process data than carrying out measurements manually.
- Difficulty in measuring restricted spaces.
- Sensitive to reflective surfaces.
- Potential for inaccuracies due to blockages.
Do you know what the internal dominant face is?
The internal dominant face (IDF) is the inside surface area comprising more than 50% of the lowest 2.75m measured vertically from the structural floor surface, or to the ceiling if lower, for each Wall Section.
