Building Analysis Flashcards
net area per person: office
100-250 sf
net area per seat: restaurant dining
15-18 sf
net area per seat: restaurant kitchen
3.6-5 sf
gross area per room: hotel (1.5 persons/room)
550-600 sf
net area per person: library reading room
20-35 sf
net area per person: theater with fixed seats
7.5 sf
net area per person: assembly areas; moveable seats
15 sf
% of seating area: theater lobbies
30%
net area per student: classroom
15-20 sf
net area per person: store
30-50 sf
benchmarking
establishment of common standards for rooms, spaces, and activities based on the measurement of similar facilities
net area (net assignable area)
the area determined by benchmarking / equipment needs (auto garage) / activity (basketball court) but not including circulation, mechanical space, or structure
unassigned area (nonassignable area)
circulation space, mechanical space, equipment rooms, wall and structural thicknesses
gross building area
net area + unassigned area
efficiency
net area : gross area
building efficiency: office
0.75 - 0.85
building efficiency: retail office
0.75 - 0.90
building efficiency: restaurant
0.65 - 0.70
building efficiency: public library
0.75 - 0.80
building efficiency: museum
0.83 - 0.90
building efficiency: theaters
0.60 - 0.75
building efficiency: hospitals
0.50 - 0.65
space req’d: mechanical rooms (total)
5 - 9% of GBA
space req’d: heating / boiling rooms
3 - 5% of GBA
space req’d: heating / forced air
4 - 8% of GBA
space req’d: fan room
3 - 7% of GBA
space req’d: toilets
50 sf per water closet
space req’d: water closet
1 per 15 people up to 55, 1 per 40 people over 55
space req’d: urinals
substitute one for each WC, but total water closets cannot be reduced less than 2/3 of the number required
space req’d: lavatories
1 per 15 people for offices / 1 per 60 people for public buildings
space req’d: hydraulic elevator, 2000 lbm
7’-4” Wx 6’-0”D
space req’d: elevator lobby
6’-0” D
space req’d: main corridors
5’ - 7’
space req’d: exit corridors
4’ (44” minimum by code)
space req’d: monumental stairs
5’ - 8’
exit stairs
4’ (44” minimum by code)
rentable area
occupant area * load factor ; this will include the net area as well as circulation and shared areas (determined by the building owner and reflected in the load factor).
occupant area
area used exclusively by a tenant in a multi tenant building
load factor
accounts for shared area of the building - determined by building owner but BOMA produces standards
base building circulation
the minimum path on a multi-occupant floor necessary for access to and egress from occupant areas, elevators, stairs, restrooms, janitorial closets, etc.
BOMA Z65.1
Determines rentable area for a tenant using two methods (A: legacy method / B:single load factor method)