Building 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)
pro forma
a financial projection for a development project that is meant to determine whether the project is feasible, given estimates on potential income and the cost of developing the project
budget method accuracy: project comparison method
15-25%
budget method accuracy: area method (square-foot/volume method)
5-15%
budget method accuracy: assembly method (system method)
10%
land value calculation: market approach
Compare to similar properties recently sold.
land value calculation: income approach
Estimate potential gross income of land, then subtract various expenses (taxes, maintenance, insurance).
land value calculation: cost approach
Estimate value of the land at its highest and best use and the cost to improve or replace the building. Subtract accrued depreciation from the replacement cost, and then add the adjusted amount to the land value at highest and best use.