Measurement Flashcards
(26 cards)
What is the difference between a goad plan and an OS plan?
A goad plan is copyrighted by OS but allows for editing of a buildings name. It also shows different levels, unlike an OS plan.
What would you include in an NIA measurement
- Atria with clear height above and entrance halls if not used in common
- Notional lift lobbies and fire corridors
- Kitchens
- Built in cupboards
- Ramps, slopping areas and steps within the useable space
- Areas occupied by ventilation and heating grilles
- Areas occupied by skirting and perimeter trunking
- Areas occupied by non structural walls
What would you exclude from an NIA?
- WCs
- Plant and lift rooms
- Stairwells
- Meter and service cupboards and risers
- Areas less than 1.5m in height
- Cleaner rooms
- Permanent circulation areas
- Space occupied by permanent and continuous a/c, heating or cooling apparatus if protrudes more than 0.25m into useable area or the space it occupies makes it substantially unusable.
- Areas substantially unusable w dimensions btw opposites faces of less than 0.25m
Measurements should be taken up to the glazing for full height glazing unless elements of the window structure render the space substantially unusable
What are the commonly used scales for plans?
1: 50 room plan
1: 100 building plan
1: 1250 street/ location
1: 2500 location
1: 50000 road map
What level of accuracy is expected in measuring?
Depending on building but code states between 1-10% but very dependent on measuring subject.
How would you measure land?
Check boundaries with OS plan prior to using Promap. Use trundle wheel.
What would you include in a GIA?
Internal walls and partitions Columns stairwells lift wells vertical ducts Entrance halls Lift room and plant rooms Voids over stairwells Pavement vaults Garages Conserve stories
What would you exclude from GIA?
Perimeter wall thickness External projections External open sides balconies Canopies Greenhouses
When would you use GEA
Planning
Rating or council tax
Building cost estimation
What size is a brick?
215mm x 102.5mm x 65mm
What scales are used on plans?
1: 50 = Room Plan (1cm = 50cm)
1: 100 = Building Plan
1: 1250 = Street / Location Plan
1: 2500 = Location Plan
1: 5000 = Road/Walking Map
What size is a brick?
215mm x 102.5mm x 65mm
What scales are used on plans?
1: 50 = Room Plan (1cm = 50cm)
1: 100 = Building Plan
1: 1250 = Street / Location Plan
1: 2500 = Location Plan
1: 5000 = Road/Walking Map
How does GIA differ from NIA?
GIA is measured up to perimeter walls and includes structural partitions.
NIA measures usable area only.
Have you measured an office building? – How do you deal with radiators?
Depends – if intermittent include the space, continuous or more than 0.25m you take out.
What basis of measurement do you use for rating?
How you would normally measure for that type unit
NIA – offices, shops
GIA – supermarket, industrial, warehousing, leisure
What source of errors could there be in measurements?
Human error – misreading, additional check measurements.
Unsure what to in/exclude – take enough measurements to calculate later on
Equipment error – faulty equipment which should be checked and calibrated quickly/annually.
What is an appropriate level of accuracy?
Depends on the subject property, how difficult it is to measure, site specific conditions
Depending on this – may range from +/- 1% to +/- 10%.
Greater margin acceptable measuring a car park compared to a City of London office.
How does a laser disto work?
The time for the laser to go there and back
What does GEA include?
Area of building measured externally at each floor level Everything in the main envelope of the building. Atria Internal balconies Loading bays Pavement vaults Garages Conservatories
What does GEA exclude?
Canopies Roof terraces – state area separately as they may have value Open-sided balconies External fire escapes Open vehicle parking areas Greenhouses
What is an internal eaves height?
The clear height between the floor and the lowest point on the underside of the roof, such as eaves.
What is a site depth?
The measurement from the front to rear boundaries
What is shop depth?
The measurement from the notional display window to the rear of the retail area, including the thickness of the display window
