Core TSIs : Spaces and workspaces : Reporting in Spaces & Workspaces : Using system reports : Charge back space usage report : Method 2: BOMA-A
Method 2: BOMA-A
No Grouping (directly & indirectly chargeable areas)
The calculation for BOMA-A is 100% identical to the Planon default method with regard to directly chargeable areas and common floor areas. Only on the level of the common building area, the calculation is slightly different. In general, BOMA-A first adds up the common floor area to each directly chargeable area. Based on these areas (direct + common floor) the common building areas will be divided. For the common floor area calculation see Method 1: Planon default. For the common building area, the calculation of Floor 1 is as follows.
Division of building common area
Space 1
Direct
10
10
Floor common
(10/60)*17
2.83
Building common
(12.83/90+29)*35
3.77
total
16.61
Space 2
Direct
15
15
Floor common
(15/60)*17
4.25
Building common
(19.25/90+29)*35
5.66
total
24.91
Space 3
Direct
5
5
Floor common
(5/60)*17
1.42
Building common
(6.417/90+29)*35
1.89
total
8.30
Space 4
Direct
30
30
Floor common
(30/60)*17
8.50
Building common
(38.5/90+29)*35
11.32
total
49.82
Illustration showing an example of building common area for no grouping-directly and indirectly chargeable areas - BOMA-A
Division of building common area with reporting period
If Space 1 is only used from 1-8-2014 to 15-8-2014 and the reporting period is 1-8-2014 to 31-8-2014, the calculation looks like this.
(15d/365d)*10 m2 = 0.411 m2
Space 1
Direct
0.411
0.411
Floor common
(0.411/50.411)*17
0.14
Building common
(0.551/80.411+29)*35
0.24
total
0.79
Space 2
Direct
15
15
Floor common
(15/50.411)*17
5.06
Building common
(20.006/80.411+29)*35
5.74
total
25.80
Space 3
Direct
5
5
Floor common
(5/50.411)*17
1.69
Building common
(6.69/80.411+29)*35
1.96
total
8.65
Space 4
Direct
30
30
Floor common
(30/50.411)*17
10.12
Building common
(40.12/80.411+29)*35
11.76
total
51.88
Illustration showing an example of building common area for no grouping-directly and indirectly chargeable areas-BOMA-A that includes reporting period time