Transcript 8. Measuring Buildings v1.2

The Survey
Surveying Equipment
Measuring
Calculations
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Surveying Equipment
It is important you are able to access every (available) part of the property
to conduct a precise, thorough and safe survey. For this you will/may need.
• Dust mask
• Ladders
• Meter box key
• Laser Measure
• Extendable mirror
• Digital camera
• Site notes
• Compass
• Clipboard
• 30m Tape Measure
• Binoculars
• Short metal tape
measure
• Shoe covers
• First aid kit
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• Torch
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Surveying Methodology
External inspection
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Walk round the outside of the property first, if possible.
Note construction type
Clues to property age
Look out for and note location & types of vent, flues and AC Units etc
Externally measure property for area & heat loss wall calculations
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Surveying Methodology
Inside the property
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Choose a start point (downstairs, upstairs, loft)
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Work Clockwise or Anticlockwise round the property
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Make notes of number of rooms
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Ceiling heights on each floor
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Walls construction
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Lighting
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Heating System
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Hot Water Systems
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It is generally a good idea to follow the order of elements on the site notes
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Measuring
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5
Room Heights
• Simply measure floor to ceiling.
• Average for variations across a floor
• Always measure room heights internally
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External Measurements
Externally there is no furniture to measure round, or internal
walls in the way
• A simple building with suitable access, can require as few
as 2 external measurements
• External measurements aren’t always appropriate:
– Bad weather
– Restricted access
– Top floor flat
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Internal Measurements
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Should be used for flats
Suitable for laser measuring devices
Must allow for internal partitions
Sometimes more appropriate for complex properties
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Property Measurement test
Study the following property details
Calculate floor areas and heat loss perimeter
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The house, a typical mid terrace property
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Floor plans
Ground floor
First floor
Calculate the floor area and heat loss
perimeter
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Area Measurements
Ground Floor
Total Floor Area
First Floor
Total Floor Area
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5.7m x 7.51m = 42.81
= 42.81m2
5.7m x 7.51m = 42.81
= 42.81m2
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Heat Loss Walls
Ground Floor 5.7m + 5.7m = 11.40m
First Floor
5.7m + 5.7m = 11.40m
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More Complex Property Measurement
Looking at the following plans, decide the
best/easiest way to measure the property to
calculate areas and perimeters.
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Measuring a Property
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External Measurements
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Internal Measurements
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Porch and Bay Window
Bay windows
2.0
2
1.0
Ceiling height
2.6m
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Porch and Bay Window
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First Floor Area
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Bay window area
5.3
2.02
1.0
• Bay window area for canted bay = Wp (width partial) x D
• 2.02 x 1.0 = 2.02m2
• This figure should be added to the total floor area for the
ground floor
There is a full list of the calculations for all 6 bay types in your pack
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Total Ground Floor area
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Heat Loss Perimeter – Bay Window
5.3
2.02
1.0
Heat loss perimeter:
This is calculated as the extra HLP for the bay window. The HLP for the
wall is measured as normal, the additional HLP of the bay is added to this
figure. Please refer to the bay window calculation sheet for guidance.
HLP = total wall length + extra perimeter (0.8 x D)
HLP = 5.3 + (0.8 x 1)
HLP = 6.1m
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Heat Loss Perimeter
2.0
1.0
1.0
2.02
11.5
Perimeter of front wall:
11.5 + extra perimeter for porch + extra perimeter for
bay window
11.5 + (2.0 x 1) + (0.8 x 1)
= 14.3m
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Total Ground Floor HLP
Front wall
Left wall
Rear wall
Right wall
= 14.30
= 8.00
= 14.30
= 10.00
Total HLP
= 46.6m
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Total First Floor HLP
First floor perimeter =
8 + 6.2 + 2.0 + 5.3 + 10 +11.5 = 43m
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Integral Garage
8
• An integral garage should not be
included in the floor area
• The walls adjacent to the integral
garage are classed as heat loss
walls
• What is the Area and HLP for this
floor?
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Main
House
3
8
4
Integral
Garage
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Area &HLP – Integral Garage
8
Area
= (8 x 8)-(4 x 3)
= 52m
Main
House
3
8
4
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Integral
Garage
HLP = 8 + 8 + 4 + 4 + 5 + 3
= 32m Or
=8x4
= 32m
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Heat Loss Perimeter - Conservatory
5
Conservatory
3
Main House
7
• Calculating the HLP for a property with a
conservatory
– Non-separated – adjoining wall is not included in HLP
– Separated – adjoining wall is included in HLP
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Habitable Rooms
• A habitable room is a room which is lived in they include:
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Lounge
Dining room
Bedroom
Study
Kitchen diner
• They do not include:
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Bathroom
Kitchen
En-suite
Hallway
Stairs
Utility room
Store rooms
Garage
Any room without a window
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Habitable Rooms
• For a kitchen to be classed as a kitchen diner there must be space for a
table and 4 chairs
• Where a door between two habitable rooms has been temporarily
removed they are still classed as two habitable rooms
• Where a door has been permanently removed, i.e the hinge holes filled in,
they are one habitable room
• A non-separated conservatory is classed as a habitable room if there is an
internal quality door between the conservatory and the dwelling
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Any questions?
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