IPMC Table 404.5 Improved

It doesn&a;t make much sense that a house with a 150&h;ft² living room and a 100&h;ft² dining room can accommodate 15 occupants under IPMC table 404.5 when neither of those rooms can accommodate 15 people sitting at tables under IBC table 1004.5. The following table fixes that incongruity.

Occupant count	Minimum area (ft²)
	Original				Improved
	Total		Per occupant		Per occupant		Total
	Living	Dining	Living	Dining	Living	Dining	Living	Dining
1	120	0	120	0	120	0	120	0
2	120	0	60	0	60	0	120	0
3	120	80	40	26 + 2/3	40	26 + 2/3	120	80
4	120	80	30	20	30	20	120	80
5	120	80	24	16	25	16 + 2/3	125	83 + 1/3
6	150	100	25	16 + 2/3	25	16 + 2/3	150	100
7	150	100	21 + 3/7	14 + 2/7	25	16 + 2/3	175	116 + 2/3
8	150	100	18 + 3/4	12 + 1/2	25	16 + 2/3	200	133 + 1/3
9	150	100	16 + 2/3	11 + 1/9	25	16 + 2/3	225	150
10	150	100	15	10	25	16 + 2/3	250	166 + 2/3
11	150	100	13 + 7/11	9 + 1/11	25	16 + 2/3	275	183 + 1/3
12	150	100	12 + 1/2	8 + 1/3	25	16 + 2/3	300	200
13	150	100	11 + 7/13	7 + 9/13	25	16 + 2/3	325	216 + 2/3
14	150	100	10 + 5/7	7 + 1/7	25	16 + 2/3	350	233 + 1/3
15	150	100	10	6 + 2/3	25	16 + 2/3	375	250
∞	150	100	~0	~0	25	16 + 2/3	∞	∞

tl;dr:

Occupant count	Minimum area (ft²)
Occupant count	Living	Dining
1–2	120	0
3–4	120	80
5–∞	25 per occupant	(16 + 2/3) per occupant