BS EN 15221-6:2011 pdf download.Facility Management Part 6: Area and Space Measurement in Facility Management.
Gross areas are determined by the gross distances, net areas are determined by the net distances. Areas which are solely needed for maintenance and emergency exits are not taken into account in this standard.
4.4 Volume
Volumes are measured by their actual dimensions. Inclined planes. whether floors or walls, define inclined bounds to the volume. Gross volumes are determined by the gross distances, net volumes are determined by the net distances. Note that Non-functional Level Area concepts such as voids do not apply here. When measuring volumes, a multi-level space is measured as a single volume.
5 Framework of area and space measurement of buildings
5.1 General
Buildings, rooms and floors shall be measured at the floor level (at the height level to the top of a finished floor). Every floor level shall be measured separately. Areas with varying net heights within one floor level may be calculated separately.
The area of a floor shall be determined as the area of the vertical projection onto the horizontal plane. Wall openings in interior and exterior walls are also measured by the vertical projection of their outer limits at floor level onto the horizontal plane and belong to the volume and area of exterior and interior walls.
See Annex B for further information.
For all categories of areas it is distinguished between:
A spaces which are entirely covered and enclosed on all sides up to their full height;
B spaces which are entirely covered, but not enclosed on all sides up to their full height (e.g. recessed balconies);
C spaces which are not covered, but contained within components (e.g. open balconies).
The application of the framework given in Table 1 is ilustrated in the fllowing example.
A section of this building is being given in Figure 4. In the fllowing figures, the grey coloured areas are showing in each case the area described in the subclause.
5.2 Level Area (LA)
Level Area is a measured area for one level, including all areas contained inside and measured to the outside permanent finished surface. This includes penthouses and mezzanines, basement and enclosed/covered connecting walkways and linkways.
Separate buildings have to be measured independently.
Here follows an exhaustive list of the elements contained within this term:
a) voids, atriums and cavities;
b) perimeter wall thickness:
C) external columns and piers;
d) structural walls and partitions;
e) internal columns and piers;
f) non-structural walls;
g) flexible and movable partitions:
h) rooms for mechanical services installations (e.g. lift rooms and boiler rooms as well as heating and cooling apparatus);
i) rooms for electncal services installations (e.g. conductors and generators as well as mains communication rooms);
j) rooms for other services installations (e.g. waste management installations and facilities maintenance stores);
k) stairwells, lift-wells and escalators;
I) corridors and other circulation areas;
m) amenities include all sanitary areas (e.g. toilets, showers and changing rooms as well as cleaners’ rooms);
n) central support spaces (e.g. entrance halls and catering spaces as well as social and recreational spaces);
0) local support spaces (e.g. meeting spaces, filing and storage space as well as print and copy areas);
p) work spaces (e.g. cellular ofies, laboratories, shop floors, teaching areas or operating theatres).
An example of the Level Area is shown in Figure 5.
5.3 Non-functional Level Area (NLA)
Non-functional Level Area is a measured area, consisting of voids, atriums and cavities.
An example of the Non-functional Level Area is shown in Figure 6.
5.4 Gross Floor Area (GFA)
Gross Floor Area is the calculated area of Level Area (LA) excluding the Non-Functional Level Area (NLA). LA- NLA=GFA
To differentiate the term, the areas included in it are being given in the following list:
a) perimeter wall thickness;
b) external columns and piers;
c) structural walls and partitions;
d) internal columns and piers:
e) non-structural walls;
f) flexible and movable partitions;
g) rooms for mechanical services installations (e.g. lift rooms and boiler rooms as well as heating and cooling apparatus);
h) rooms for electrical services installations (e.g. conductors and generators as well as mains communication rooms);
i) rooms for other services installations (e.g. waste management installations and facilities maintenance stores);
j) stairwells, lift-wells and escalators;
k) corridors and other circulation areas;
I) amenities include all sanitary areas (e.g. toilets, showers and changing rooms as well as cleaners’ rooms);
m) central support spaces (e.g. entrance halls and catering spaces as well as social and recreational spaces);
n) local support spaces (e.g. meetings spaces, filing and storage space as well as print and copy areas);
0) work spaces (e.g. cellular offices, laboratories, shop floors, teaching areas or operating theatres).BS EN 15221-6 pdf download.