Part 13.3 External glazing

ABCB Housing Provisions

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13.3

Part 13.3 External glazing

NSW Part 13.3 External glazing

NT Part 13.3 External glazing

TAS Part 13.3 External glazing

13.3.1

Application of Part 13.3

2019: 3.12.2

2019: 3.12.2

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13.3.2

External glazing — winter

2019: 3.12.2.1

(1) In climate zones 2 to 8, the ratio of the conductance (C_u) and solar heat gain (C_SHGC) of the glazing in each storey, including any mezzanine, must—

not exceed the allowances obtained from Table 13.3.2a; and
be calculated in accordance with the following formula:
$\frac{[(A_{1} \times U_{1} \times B C_{1} \times O C_{1} \times R_{W 1}) + (A_{2} \times U_{2} \times B C_{2} \times O C_{2} \times R_{W 2}) + . . .]}{[(A_{1} \times S H G C_{1} \times E_{W 1} \times R_{W 1} \times B S_{W 1} \times L_{W 1} \times F_{W 1} \times H_{W 1}) + (A_{2} \times S H G C_{2} \times E_{W}_{2} \times R_{W 2} \times B S_{W 2} \times L_{W 2} \times F_{W 2} \times H_{W 2}) + . . .]}$

(2) In the formula at (1)(b)—

$A_{1, 2, e t c}$
= the area of each glazing element; and
$U_{1, 2, e t c}$
= the Total System U-Value of each glazing element; and
$S H G C_{1, 2, e t c}$
= the Total System SHGC for each glazing element, not exceeding 0.7; and
$E_{W 1, W 2, e t c}$
= the winter exposure factor for each glazing element obtained from Table 13.3.2b, 13.3.2c, 13.3.2d, 13.3.2e, 13.3.2f, 13.3.2g, 13.3.2h, 13.3.2i, 13.3.2j, 13.3.2k, 13.3.2l, 13.3.2m, 13.3.2n, 13.3.2o, 13.3.2p or 13.3.2q; and
$B C_{1, 2}_{, e t c}$
= the bedroom conductance factor obtained from Table 13.3.2r; and
$O C_{1, 2, e t c}$
= the orientation sector conductance factor obtained from Table 13.3.2s, 13.3.2t, 13.3.2u, 13.3.2v, 13.3.2w, 13.3.2x or 13.3.2y; and
$R_{W 1, W 2, e t c}$
= the room type factor in Table 13.3.2z, 13.3.2aa, 13.3.2ab, 13.3.2ac, 13.3.2ad, 13.3.2ae, 13.3.2af or 13.3.2ag; and
$B S_{W 1, W 2, e t c}$
= the bedroom solar heat gain factor in Table 13.3.2z, 13.3.2aa, 13.3.2ab, 13.3.2ac, 13.3.2ad, 13.3.2ae, 13.3.2af or 13.3.2ag; and
$L_{W 1, W 2, e t c}$
= the factor in Table 13.3.2z, 13.3.2aa, 13.3.2ab, 13.3.2ac, 13.3.2ad, 13.3.2ae, 13.3.2af or 13.3.2ag for each glazing element located on a floor level above the lowest floor level; and
$F_{W 1, W 2, e t c}$
= the frame factor in Table 13.3.2z, 13.3.2aa, 13.3.2ab, 13.3.2ac, 13.3.2ad, 13.3.2ae, 13.3.2af or 13.3.2ag for each glazing element; and
$H_{W 1, W 2, e t c}$
= the floor factor in Table 13.3.2z, 13.3.2aa, 13.3.2ab, 13.3.2ac, 13.3.2ad, 13.3.2ae, 13.3.2af or 13.3.2ag for each glazing element.

(3) For the purposes of this clause—

orientation sectors must be determined in accordance with Figure 13.3.2a; and
P/H must be determined in accordance with Figure 13.3.2b.

Climate zone	Floor in direct contact with the ground	Suspended floor
2	9.60	9.37
3	19.10	14.75
4	10.25	8.04
5 (lightweight wall)	8.89	8.32
5 (concrete or masonry wall)	8.79	10.12
6	8.45	6.06
7	7.02	7.96
8	4.93	9.41

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.49	1.48	1.08	0.47	0.41	0.46	1.05	1.44
0.05	1.44	1.40	1.00	0.40	0.34	0.41	0.97	1.38
0.10	1.38	1.36	0.95	0.38	0.32	0.38	0.93	1.31
0.20	1.21	1.21	0.85	0.34	0.30	0.34	0.84	1.17
0.40	1.00	0.97	0.68	0.28	0.25	0.28	0.70	0.97
0.60	0.83	0.80	0.60	0.25	0.22	0.25	0.59	0.81
0.80	0.62	0.64	0.49	0.21	0.21	0.23	0.51	0.66
1.00	0.43	0.54	0.40	0.20	0.20	0.19	0.43	0.55
1.20	0.26	0.43	0.35	0.18	0.19	0.18	0.40	0.45
1.40	0.22	0.37	0.29	0.16	0.18	0.17	0.36	0.37
1.60	0.18	0.30	0.28	0.16	0.17	0.16	0.30	0.33
1.80	0.15	0.26	0.24	0.15	0.15	0.15	0.26	0.27
2.00	0.12	0.19	0.21	0.14	0.15	0.15	0.25	0.26

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.67	1.36	1.20	0.52	0.19	0.85	1.18	1.51
0.05	1.62	1.29	1.12	0.45	0.16	0.75	1.09	1.45
0.10	1.56	1.26	1.06	0.42	0.15	0.71	1.05	1.37
0.20	1.36	1.11	0.95	0.38	0.14	0.62	0.95	1.22
0.40	1.13	0.90	0.76	0.31	0.12	0.52	0.79	1.01
0.60	0.94	0.74	0.67	0.28	0.10	0.46	0.66	0.85
0.80	0.70	0.59	0.55	0.24	0.10	0.41	0.57	0.69
1.00	0.49	0.50	0.45	0.22	0.09	0.35	0.48	0.57
1.20	0.30	0.40	0.39	0.20	0.09	0.33	0.46	0.47
1.40	0.25	0.34	0.32	0.18	0.08	0.31	0.40	0.39
1.60	0.20	0.27	0.31	0.18	0.08	0.29	0.34	0.35
1.80	0.17	0.24	0.27	0.17	0.07	0.27	0.30	0.29
2.00	0.14	0.18	0.24	0.16	0.07	0.27	0.29	0.28

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.36	1.16	0.75	0.38	0.38	0.43	1.05	1.41
0.05	1.35	1.12	0.70	0.33	0.33	0.38	1.00	1.38
0.10	1.25	1.07	0.66	0.32	0.32	0.37	0.96	1.30
0.20	1.11	0.95	0.60	0.28	0.30	0.33	0.86	1.18
0.40	0.89	0.78	0.51	0.24	0.27	0.27	0.74	0.98
0.60	0.67	0.60	0.41	0.21	0.26	0.23	0.59	0.79
0.80	0.45	0.48	0.37	0.19	0.23	0.22	0.51	0.63
1.00	0.30	0.41	0.30	0.17	0.21	0.21	0.45	0.51
1.20	0.21	0.31	0.26	0.15	0.21	0.18	0.37	0.43
1.40	0.16	0.28	0.21	0.14	0.20	0.17	0.33	0.37
1.60	0.12	0.24	0.20	0.13	0.18	0.16	0.32	0.31
1.80	0.11	0.17	0.16	0.13	0.18	0.14	0.26	0.28
2.00	0.09	0.17	0.15	0.12	0.18	0.14	0.24	0.24

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.92	1.29	0.97	0.82	0.75	1.07	1.24	1.69
0.05	1.90	1.24	0.90	0.72	0.66	0.94	1.18	1.65
0.10	1.76	1.18	0.86	0.69	0.63	0.91	1.13	1.56
0.20	1.57	1.05	0.77	0.62	0.60	0.81	1.01	1.41
0.40	1.25	0.86	0.66	0.51	0.54	0.68	0.87	1.17
0.60	0.94	0.66	0.53	0.46	0.51	0.59	0.70	0.94
0.80	0.63	0.53	0.47	0.41	0.45	0.55	0.60	0.76
1.00	0.42	0.45	0.39	0.36	0.42	0.52	0.53	0.61
1.20	0.29	0.35	0.34	0.33	0.42	0.46	0.44	0.52
1.40	0.23	0.31	0.28	0.31	0.39	0.42	0.39	0.44
1.60	0.17	0.27	0.26	0.28	0.36	0.39	0.38	0.37
1.80	0.15	0.19	0.21	0.28	0.36	0.36	0.31	0.34
2.00	0.13	0.19	0.20	0.26	0.36	0.36	0.29	0.29

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.48	1.40	0.91	0.47	0.46	0.51	1.11	1.57
0.05	1.45	1.34	0.84	0.40	0.38	0.43	1.03	1.51
0.10	1.43	1.30	0.81	0.37	0.36	0.40	0.98	1.46
0.20	1.22	1.18	0.74	0.34	0.33	0.36	0.88	1.31
0.40	1.11	1.01	0.62	0.29	0.29	0.31	0.75	1.13
0.60	0.92	0.83	0.54	0.25	0.25	0.27	0.64	0.92
0.80	0.80	0.68	0.47	0.23	0.23	0.25	0.57	0.77
1.00	0.64	0.61	0.41	0.20	0.21	0.22	0.48	0.66
1.20	0.46	0.47	0.36	0.18	0.21	0.21	0.44	0.57
1.40	0.35	0,43	0.33	0.17	0.20	0.20	0.39	0.48
1.60	0.26	0.38	0.31	0.17	0.18	0.18	0.34	0.42
1.80	0.20	0.32	0.28	0.16	0.18	0.17	0.31	0.36
2.00	0.18	0.30	0.24	0.14	0.17	0.16	0.29	0.30

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.38	1.12	1.00	0.71	0.56	0.87	1.02	1.26
0.05	1.35	1.08	0.91	0.60	0.46	0.73	0.95	1.21
0.10	1.34	1.04	0.89	0.56	0.45	0.69	0.90	1.17
0.20	1.13	0.95	0.80	0.51	0.40	0.62	0.82	1.05
0.40	1.04	0.81	0.67	0.43	0.35	0.53	0.70	0.91
0.60	0.85	0.67	0.59	0.38	0.30	0.47	0.59	0.74
0.80	0.74	0.55	0.52	0.34	0.29	0.42	0.53	0.62
1.00	0.60	0.49	0.44	0.31	0.26	0.38	0.44	0.53
1.20	0.43	0.38	0.40	0.27	0.26	0.36	0.41	0.46
1.40	0.33	0.35	0.36	0.25	0.24	0.33	0.36	0.39
1.60	0.24	0.31	0.34	0.25	0.22	0.31	0.31	0.34
1.80	0.18	0.26	0.30	0.24	0.22	0.29	0.29	0.29
2.00	0.17	0.24	0.26	0.22	0.21	0.27	0.26	0.24

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.61	1.55	1.00	0.49	0.44	0.47	1.02	1.58
0.05	1.56	1.49	0.91	0.41	0.37	0.40	0.94	1.51
0.10	1.56	1.43	0.86	0.39	0.36	0.38	0.90	1.47
0.20	1.30	1.27	0.77	0.35	0.32	0.34	0.80	1.32
0.40	1.19	1.05	0.64	0.30	0.28	0.29	0.66	1.10
0.60	0.97	0.87	0.52	0.26	0.25	0.25	0.56	0.90
0.80	0.78	0.71	0.46	0.24	0.23	0.23	0.50	0.73
1.00	0.64	0.55	0.36	0.21	0.22	0.20	0.43	0.63
1.20	0.43	0.48	0.33	0.20	0.20	0.19	0.35	0.50
1.40	0.32	0.36	0.27	0.19	0.19	0.18	0.34	0.43
1.60	0.22	0.32	0.25	0.18	0.17	0.16	0.28	0.36
1.80	0.18	0.26	0.21	0.16	0.17	0.16	0.24	0.32
2.00	0.14	0.20	0.20	0.15	0.17	0.14	0.23	0.24

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.61	1.55	1.00	0.43	0.33	0.43	1.11	1.66
0.05	1.56	1.49	0.91	0.36	0.28	0.36	1.01	1.59
0.10	1.56	1.43	0.86	0.34	0.27	0.35	0.98	1.54
0.20	1.30	1.27	0.77	0.31	0.24	0.31	0.87	1.39
0.40	1.19	1.05	0.64	0.26	0.21	0.26	0.72	1.16
0.60	0.97	0.87	0.52	0.23	0.19	0.23	0.61	0.95
0.80	0.78	0.71	0.46	0.21	0.17	0.21	0.55	0.77
1.00	0.64	0.55	0.36	0.19	0.16	0.19	0.47	0.66
1.20	0.43	0.48	0.33	0.18	0.15	0.18	0.38	0.53
1.40	0.32	0.36	0.27	0.17	0.14	0.17	0.36	0.45
1.60	0.22	0.32	0.25	0.15	0.13	0.14	0.30	0.38
1.80	0.18	0.26	0.21	0.14	0.13	0.14	0.26	0.34
2.00	0.14	0.20	0.20	0.13	0.13	0.13	0.25	0.25

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.61	1.20	1.00	0.65	0.48	0.95	1.19	1.47
0.05	1.56	1.15	0.91	0.55	0.40	0.81	1.09	1.40
0.10	1.56	1.11	0.86	0.52	0.39	0.78	1.05	1.37
0.20	1.30	0.98	0.77	0.47	0.35	0.68	0.94	1.23
0.40	1.19	0.81	0.64	0.40	0.30	0.59	0.77	1.02
0.60	0.97	0.67	0.52	0.35	0.27	0.51	0.66	0.84
0.80	0.78	0.55	0.46	0.32	0.25	0.46	0.59	0.68
1.00	0.64	0.42	0.36	0.29	0.23	0.42	0.50	0.59
1.20	0.43	0.37	0.33	0.27	0.22	0.39	0.41	0.46
1.40	0.32	0.28	0.27	0.25	0.21	0.37	0.39	0.40
1.60	0.22	0.24	0.25	0.23	0.18	0.32	0.32	0.33
1.80	0.18	0.20	0.21	0.22	0.18	0.32	0.28	0.30
2.00	0.14	0.15	0.20	0.20	0.18	0.29	0.27	0.22

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.71	1.24	1.00	0.63	0.44	0.94	1.19	1.54
0.05	1.66	1.19	0.91	0.53	0.37	0.80	1.09	1.47
0.10	1.66	1.14	0.86	0.50	0.36	0.77	1.05	1.43
0.20	1.39	1.01	0.77	0.45	0.32	0.68	0.94	1.28
0.40	1.27	0.84	0.64	0.39	0.28	0.58	0.77	1.07
0.60	1.03	0.69	0.52	0.34	0.25	0.51	0.66	0.87
0.80	0.83	0.57	0.46	0.31	0.23	0.46	0.59	0.71
1.00	0.68	0.43	0.36	0.27	0.22	0.41	0.50	0.61
1.20	0.46	0.38	0.33	0.26	0.20	0.39	0.41	0.49
1.40	0.34	0.28	0.27	0.24	0.19	0.36	0.39	0.42
1.60	0.24	0.25	0.25	0.23	0.17	0.31	0.32	0.35
1.80	0.19	0.21	0.21	0.21	0.17	0.31	0.28	0.31
2.00	0.15	0.16	0.20	0.19	0.17	0.29	0.27	0.23

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.52	1.44	1.28	0.77	0.77	0.74	1.32	1.45
0.05	1.47	1.36	1.17	0.65	0.65	0.63	1.22	1.38
0.10	1.46	1.31	1.12	0.61	0.61	0.59	1.14	1.35
0.20	1.25	1.18	0.99	0.54	0.54	0.53	1.05	1.23
0.40	1.14	1.02	0.85	0.46	0.47	0.45	0.90	1.04
0.60	0.98	0.87	0.72	0.39	0.41	0.38	0.78	0.90
0.80	0.86	0.74	0.61	0.36	0.38	0.36	0.69	0.75
1.00	0.69	0.58	0.54	0.32	0.34	0.31	0.59	0.66
1.20	0.56	0.54	0.46	0.31	0.31	0.30	0.54	0.55
1.40	0.42	0.41	0.42	0.27	0.31	0.28	0.48	0.49
1.60	0.35	0.37	0.35	0.26	0.29	0.25	0.42	0.42
1.80	0.26	0.30	0.34	0.24	0.27	0.23	0.41	0.38
2.00	0.20	0.27	0.32	0.22	0.25	023	0.36	0.30

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.62	1.31	1.16	0.72	0.49	0.90	1.10	1.44
0.05	1.56	1.24	1.06	0.60	0.41	0.76	1.01	1.37
0.10	1.55	1.19	1.02	0.57	0.39	0.72	0.95	1.34
0.20	1.33	1.07	0.90	0.51	0.35	0.64	0.88	1.23
0.40	1.22	0.93	0.77	0.43	0.30	0.54	0.75	1.04
0.60	1.04	0.79	0.65	0.37	0.26	0.46	0.65	0.90
0.80	0.92	0.67	0.55	0.33	0.24	0.44	0.58	0.75
1.00	0.73	0.53	0.49	0.30	0.22	0.38	0.49	0.65
1.20	0.60	0.50	0.42	0.29	0.20	0.36	0.45	0.55
1.40	0.45	0.38	0.38	0.25	0.20	0.34	0.40	0.49
1.60	0.37	0.34	0.32	0.24	0.18	0.30	0.35	0.42
1.80	0.27	0.28	0.30	0.22	0.17	0.28	0.34	0.38
2.00	0.21	0.25	0.29	0.21	0.16	0.28	0.30	0.30

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.87	1.92	1.20	0.52	0.46	0.53	1.13	1.80
0.05	1.81	1.83	1.12	0.44	0.38	0.45	1.04	1.73
0.10	1.81	1.80	1.06	0.41	0.36	0.42	0.99	1.69
0.20	1.70	1.68	0.99	0.37	0.33	0.38	0.90	1.54
0.40	1.46	1.46	0.84	0.32	0.27	0.32	0.75	1.36
0.60	1.34	1.28	0.73	0.28	0.25	0.28	0.66	1.15
0.80	1.14	1.10	0.64	0.25	0.22	0.25	0.59	1.00
1.00	1.04	0.98	0.59	0.22	0.21	0.22	0.51	0.85
1.20	0.82	0.82	0.49	0.21	0.20	0.21	0.45	0.76
1.40	0.75	0.80	0.48	0.19	0.18	0.20	0.41	0.58
1.60	0.58	0.58	0.44	0.18	0.17	0.17	0.38	0.54
1.80	0.47	0.55	0.35	0.17	0.17	0.17	0.35	0.47
2.00	0.35	0.46	0.35	0.15	0.16	0.17	0.30	0.40

P/H	North	North east	East	South east	South	South west	West	North east
0.00	1.87	1.43	1.20	0.75	0.53	0.93	1.13	1.62
0.05	1.81	1.37	1.12	0.63	0.44	0.78	1.04	1.56
0.10	1.81	1.34	1.06	0.59	0.42	0.73	0.99	1.53
0.20	1.70	1.25	0.99	0.53	0.38	0.66	0.90	1.38
0.40	1.46	1.09	0.84	0.45	0.32	0.56	0.75	1.22
0.60	1.34	0.95	0.73	0.40	0.29	0.49	0.66	1.04
0.80	1.14	0.82	0.64	0.36	0.26	0.44	0.59	0.90
1.00	1.04	0.73	0.59	0.32	0.24	0.39	0.51	0.77
1.20	0.82	0.61	0.49	0.30	0.23	0.37	0.45	0.68
1.40	0.75	0.60	0.48	0.28	0.21	0.34	0.41	0.52
1.60	0.58	0.43	0.44	0.26	0.20	0.29	0.38	0.49
1.80	0.47	0.41	0.35	0.24	0.20	0.29	0.35	0.42
2.00	0.35	0.34	0.35	0.22	0.18	0.29	0.30	0.36

P/H	North	North east	East	South east	South	South west	West	North west
0.00	2.30	2.40	1.66	0.67	0.36	0.65	1.59	2.30
0.05	2.23	2.28	1.50	0.56	0.30	0.54	1.43	2.19
0.10	2.20	2.20	1.44	0.53	0.28	0.51	1.37	2.11
0.20	1.86	1.98	1.29	0.47	0.26	0.46	1.23	1.89
0.40	1.68	1.65	1.05	0.40	0.22	0.39	1.00	1.56
0.60	1.40	1.34	0.90	0.34	0.19	0.33	0.86	1.29
0.80	1.19	1.10	0.76	0.30	0.18	0.29	0.71	1.06
1.00	0.94	0.96	0.66	0.29	0.16	0.26	0.59	0.91
1.20	0.64	0.75	0.57	0.26	0.15	0.25	0.53	0.74
1.40	0.52	0.68	0.51	0.24	0.14	0.23	0.47	0.60
1.60	0.37	0.50	0.43	0.23	0.14	0.21	0.43	0.50
1.80	0.27	0.45	0.39	0.20	0.13	0.19	0.37	0.46
2.00	0.23	0.41	0.33	0.20	0.12	0.19	0.33	0.36

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.39	1.27	1.22	0.80	0.59	0.90	1.05	1.28
0.05	1.35	1.21	1.10	0.66	0.49	0.74	0.95	1.22
0.10	1.33	1.17	1.05	0.63	0.46	0.71	0.91	1.17
0.20	1.12	1.05	0.95	0.56	0.42	0.63	0.82	1.05
0.40	1.02	0.88	0.77	0.47	0.35	0.53	0.66	0.87
0.60	0.85	0.71	0.66	0.41	0.31	0.46	0.57	0.72
0.80	0.72	0.58	0.56	0.36	0.29	0.40	0.47	0.59
1.00	0.57	0.51	0.48	0.34	0.26	0.36	0.39	0.51
1.20	0.39	0.40	0.42	0.30	0.25	0.34	0.35	0.41
1.40	0.32	0.36	0.38	0.29	0.23	0.32	0.31	0.33
1.60	0.22	0.27	0.32	0.27	0.22	0.29	0.29	0.28
1.80	0.17	0.24	0.29	0.24	0.21	0.27	0.25	0.25
2.00	0.14	0.22	0.24	0.24	0.20	0.27	0.22	0.20

Climate zone	Floor in direct contact with the ground	Suspended floor
2	0.90	0.70
3	1.11	0.70
4	1.10	0.95
5 (lightweight or masonry veneer wall)	1.20	0.60
5 (concrete or masonry wall)	0.70	1.20
6	1.10	1.10
7	1.08	0.80
8	0.83	0.82

Floor type	North	North east	East	South east	South	South west	West	North east
Floor in direct contact with the ground	1.11	0.97	0.83	0.81	0.79	0.82	0.84	0.98
Suspended floor	1.20	0.98	0.75	0.75	0.75	0.78	0.80	1.00

Floor type	North	North east	East	South east	South	South west	West	North west
Floor in direct contact with the ground	1.25	1.08	0.91	0.86	0.80	1.00	1.20	1.23
Suspended floor	1.20	1.15	1.10	0.95	0.80	1.01	1.21	1.21

Floor type	North	North east	East	South east	South	South west	West	North west
Floor in direct contact with the ground	1.15	0.93	0.70	0.75	0.80	0.80	0.80	0.98
Suspended floor	1.20	1.05	0.90	0.90	0.90	0.90	0.90	1.05

Wall construction	Floor type	North	North east	East	South east	South	South west	West	North west
Lightweight or masonry veneer	Floor in direct contact with the ground	1.20	1.00	0.80	0.75	0.70	0.75	0.80	1.00
Lightweight or masonry veneer	Suspended floor	1.20	1.00	0.80	0.80	0.80	0.85	0.90	1.05
Concrete or masonry	Floor in direct contact with the ground	1.00	0.90	0.80	0.85	0.90	0.90	0.90	0.95
Concrete or masonry	Suspended floor	1.00	0.98	0.95	0.93	0.90	0.93	0.95	0.98

Floor type	North	North east	East	South east	South	South west	West	North west
Floor in direct contact with the ground	1.05	0.98	0.90	0.85	0.80	0.85	0.90	0.98
Suspended floor	1.00	0.90	0.80	0.80	0.80	0.80	0.80	0.90

Floor type	North	North east	East	South east	South	South west	West	North west
Floor in direct contact with the ground	1.30	1.05	0.80	0.80	0.80	0.80	0.80	1.05
Suspended floor	1.30	1.10	0.90	0.90	0.90	0.90	0.90	1.10

Floor type	North	North east	East	South east	South	South west	West	North west
Floor in direct contact with the ground	1.30	1.10	0.90	0.88	0.85	0.88	0.90	1.10
Suspended floor	1.20	1.00	0.80	0.75	0.70	0.75	0.80	1.00

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_W) for a bedroom and a room which is not a conditioned space	0.40	1.00
Bedroom solar heat gain factor (BS_W)	1.80	1.02
Level factor (L_W) for all floor levels above the lowest floor	1.10	1.20
Frame factor (F_W) for frames with a solar absorptance of ≤ 0.40	0.98	0.97
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	1.00	0.99
Frame factor (F_W) for frames with a solar absorptance of ≥ 0.68	1.03	1.03
Floor factor (for tiled or vinyl covered floor) (H_W)	1.14	Not applicable

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_W) for a bedroom and a room which is not a conditioned space	0.26	1.00
Bedroom solar heat gain factor (BS_W)	0.79	0.50
Level factor (L_W) for all levels above the lowest floor	1.19	1.30
Frame factor (F_W) for frames with a solar absorptance of ≤ 0.40	0.97	0.97
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	1.00	1.00
Frame factor (F_W) for frames with a solar absorptance of ≥ 0.68	1.04	1.04
Floor factor (for tiled or vinyl covered floor) (H_W)	1.15	Not applicable

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_W) for a bedroom and a room which is not a conditioned space	0.60	1.00
Bedroom solar heat gain factor (BS_W)	0.70	0.71
Level factor (L_W) for all levels above the lowest floor	1.30	1.40
Frame factor (F_W) for frames with a solar absorptance of ≤ 0.40	0.98	0.98
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	1.00	1.00
Frame factor (F_W) for frames with a solar absorptance of ≥ 0.68	1.04	1.04
Floor factor (for tiled or vinyl covered floor) (H_W)	1.03	Not applicable

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_W) for a bedroom and a room which is not a conditioned space	0.60	1.00
Bedroom solar heat gain factor (BS_W)	1.20	0.57
Level factor (L_W) for all floor levels above the lowest floor	1.30	1.20
Frame factor (F_W) for frames with a solar absorptance of ≤ 0.40	0.97	0.90
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	1.00	0.93
Frame factor (F_W) for frames with a solar absorptance of ≥ 0.68	1.04	1.00
Floor factor (for tiled or vinyl covered floor) (H_W)	1.05	Not applicable

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_W) for a bedroom and a room which is not a conditioned space	0.40	0.30
Bedroom solar heat gain factor (BS_W)	1.00	0.60
Level factor (L_W) for all floor levels above the lowest floor	1.40	1.10
Frame factor (F_W) for frames with a solar absorptance of ≤ 0.40	0.97	0.90
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	1.00	1.00
Frame factor (F_W) for frames with a solar absorptance of ≥ 0.68	1.04	1.00
Floor factor (for tiled or vinyl covered floor) (H_W)	1.10	Not applicable

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_W) for a bedroom and a room which is not a conditioned space	0.60	1.00
Bedroom solar heat gain factor (BS_W)	0.70	1.35
Level factor (L_W) for all floor levels above the lowest floor	1.30	1.40
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	0.93	0.83
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	0.96	0.96
Frame factor (F_W) for frames with a solar absorptance of ≥ 0.68	1.00	1.00
Floor factor (for tiled or vinyl covered floor) (H_W)	0.95	Not applicable

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_W) for a bedroom and a room which is not a conditioned space	0.60	1.00
Bedroom solar heat gain factor (BS_W)	1.22	0.50
Level factor (L_W) for all floor levels above the lowest floor	1.30	1.10
Frame factor (F_W) for frames with a solar absorptance of ≤ 0.40	0.97	0.97
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	1.00	1.00
Frame factor (F_W) for frames with a solar absorptance of ≥ 0.68	1.05	1.05
Floor factor (for tiled or vinyl covered floor) (H_W)	1.03	Not applicable

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_W) for a bedroom or a which is not a conditioned space	0.50	1.00
Bedroom solar heat gain factor (BS_W)	1.52	0.32
Level factor (L_W) for all floor levels above the lowest floor	1.15	0.70
Frame factor (F_W) for frames with a solar absorptance of ≤ 0.40	0.96	0.96
Frame factor (F_W) for frames with a solar absorptance of > 0.40 to < 0.68	1.00	1.00
Frame factor (F_W) for frames with a solar absorptance of ≥ 0.68	1.00	1.00
(H_W)	0.91	Not applicable

Explanatory information

There is little or no need for heating at any time of the year in climate zone 1. Therefore, this clause does not apply in climate zone 1.
For the bedroom conductance factor (BC), the conductance heat loss from windows in bedrooms and unconditioned areas has less impact on the heating loads of a dwelling than conductance heat loss from windows in a living area due to the different time of day that the rooms are occupied. Bedrooms are typically not occupied during the day when outdoor temperatures and solar heat gains are higher.
For the orientation sector conductance factor (OC) in a room which has higher solar heat gain through the glazing, the average temperature in the room will be higher than an orientation which has lower solar heat gain through the glazing.

2019: 3.12.2.1

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13.3.3

External glazing — summer

New for 2022

(1) In climate zones 1 to 7, the aggregate solar heat gain of the glazing in each storey of a building, including any mezzanine, must—

not exceed the allowance resulting from multiplying the floor area of each storey, measured within the enclosing walls, by the constant C_SHGC obtained from Table 13.3.3a; and
be calculated in accordance with the following formula:

$(A_{1} \times S H G C_{1} \times E_{S 1} \times R_{S 1} \times L_{S 1} \times F_{S 1} \times H_{S 1}) + (A_{2} \times S H G C_{2} \times E_{S 2} \times R_{S 2} \times L_{S 2} \times F_{S 2} \times H_{S 2}) + . . .$

(2) In the formula at (1)(b)—

$A_{1, 2, e t c}$
= the area of each glazing element; and
$S H G C_{1, 2, e t c}$
= the Total System SHGC for each glazing element not exceeding 0.7; and
$E_{S 1, S 2, e t c}$
= the summer exposure factor for each glazing element obtained from Table 13.3.3b, 13.3.3c, 13.3.3d, 13.3.3e, 13.3.3f, 13.3.3g, 13.3.3h, 13.3.3i, 13.3.3j, 13.3.3k, 13.3.3l, 13.3.3m, 13.3.3n, 13.3.3o, 13.3.3p or 13.3.3q; and
$R_{S 1, S 2, e t c}$
= the factor in Table 13.3.3r, 13.3.3s, 13.3.3t, 13.3.3u, 13.3.3v, 13.3.3w, 13.3.3x or 13.3.3y for each glazing element located in a bedroom or room which is not a conditioned space; and
$L_{S 1, S 2, e t c}$
= the factor in Table 13.3.3r, 13.3.3s, 13.3.3t, 13.3.3u, 13.3.3v, 13.3.3w, 13.3.3x or 13.3.3y for each glazing element located on a floor level above the lowest floor; and
$F_{S 2, S 2, e t c}$
= the frame factor in Table 13.3.3r, 13.3.3s, 13.3.3t, 13.3.3u, 13.3.3v, 13.3.3w, 13.3.3x or 13.3.3y for each glazing element; and
$H_{S 1, S 2, e t c}$
= the floor factor in Table 13.3.3r, 13.3.3s, 13.3.3t, 13.3.3u, 13.3.3v, 13.3.3w, 13.3.3x or 13.3.3y for each glazing element.

(3) For the purposes of this clause—

orientation sectors must be determined in accordance with Figure 13.3.2a; and
P/H must be measured in accordance with Figure 13.3.2b.

Floor type	Ventilation opening area	Climate zone
Floor in direct contact with the ground	5%	0.0672	0.0595	0.0945	0.0604	0.0484	0.0657	0.0786	0.0762
10%	0.0718	0.0640	0.0985	0.0626	0.0538	0.0695	0.0817	0.0821
15%	0.0770	0.0682	0.1001	0.0641	0.0569	0.0714	0.0832	0.0871
20%	0.0827	0.0719	0.1007	0.0650	0.0587	0.0723	0.0840	0.0912
Suspended floor	5%	0.0431	0.0324	0.0768	0.0651	0.0334	0.0630	0.0963	0.0750
10%	0.0497	0.0404	0.0783	0.0697	0.0426	0.0683	0.0989	0.0778
15%	0.0541	0.0458	0.0792	0.0721	0.0477	0.0710	0.1001	0.0789
20%	0.0570	0.0494	0.0796	0.0734	0.0505	0.0723	0.1007	0.0793

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.35	1.64	1.69	1.62	1.13	1.65	1.72	1.66
0.05	1.14	1.45	1.56	1.47	0.98	1.52	1.60	1.46
0.10	1.07	1.33	1.45	1.40	0.88	1.42	1.50	1.35
0.20	0.96	1.15	1.32	1.23	0.72	1.22	1.30	1.17
0.40	0.78	0.88	1.03	0.90	0.55	0.98	1.08	0.92
0.60	0.65	0.72	0.86	0.77	0.44	0.78	0.86	0.74
0.80	0.57	0.61	0.69	0.61	0.39	0.68	0.75	0.62
1.00	0.49	0.51	0.59	0.54	0.33	0.56	0.62	0.55
1.20	0.47	0.45	0.48	0.43	0.29	0.51	0.55	0.51
1.40	0.44	0.41	0.42	0.39	0.29	0.42	0.48	0.43
1.60	0.39	0.35	0.37	0.34	0.23	0.38	0.44	0.41
1.80	0.34	0.35	0.35	0.29	0.22	0.36	0.39	0.35
2.00	0.31	0.33	0.30	0.27	0.21	0.31	0.36	0.33

P/H	North	North east	East	South East	South	South west	West	North west
0.00	0.61	0.96	1.43	1.19	0.70	1.15	1.32	0.92
0.05	0.51	0.84	1.32	1.08	0.61	1.06	1.23	0.81
0.10	0.48	0.78	1.23	1.03	0.55	0.99	1.15	0.75
0.20	0.43	0.67	1.12	0.90	0.45	0.85	1.00	0.65
0.40	0.35	0.51	0.88	0.66	0.34	0.68	0.83	0.51
0.60	0.29	0.42	0.73	0.57	0.28	0.54	0.66	0.41
0.80	0.26	0.35	0.59	0.45	0.24	0.47	0.58	0.35
1.00	0.22	0.30	0.50	0.39	0.20	0.39	0.48	0.30
1.20	0.21	0.26	0.41	0.32	0.18	0.35	0.42	0.28
1.40	0.20	0.24	0.36	0.29	0.18	0.29	0.37	0.24
1.60	0.18	0.21	0.31	0.25	0.15	0.26	0.34	0.23
1.80	0.15	0.21	0.30	0.21	0.14	0.25	0.30	0.20
2.00	0.14	0.19	0.26	0.20	0.13	0.22	0.28	0.18

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.59	1.08	1.50	0.93	0.40	1.05	1.78	1.19
0.05	0.49	0.94	1.35	0.82	0.33	0.95	1.64	1.06
0.10	0.45	0.87	1.28	0.77	0.31	0.88	1.52	0.97
0.20	0.39	0.76	1.13	0.68	0.28	0.79	1.33	0.84
0.40	0.32	0.57	0.90	0.54	0.22	0.63	1.10	0.65
0.60	0.27	0.45	0.74	0.44	0.18	0.52	0.89	0.48
0.80	0.24	0.38	0.62	0.36	0.16	0.43	0.77	0.42
1.00	0.21	0.31	0.53	0.31	0.13	0.38	0.63	0.34
1.20	0.19	0.28	0.43	0.27	0.12	0.32	0.55	0.30
1.40	0.17	0.25	0.39	0.25	0.12	0.28	0.48	0.26
1.60	0.16	0.24	0.34	0.22	0.10	0.25	0.41	0.24
1.80	0.14	0.21	0.30	0.20	0.09	0.24	0.37	0.22
2.00	0.14	0.19	0.27	0.19	0.09	0.21	0.36	0.20

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.43	0.81	1.16	0.75	0.36	1.06	1.88	1.11
0.05	0.36	0.71	1.05	0.67	0.30	0.96	1.72	0.99
0.10	0.33	0.66	0.99	0.62	0.29	0.89	1.60	0.90
0.20	0.28	0.57	0.87	0.55	0.25	0.80	1.40	0.78
0.40	0.23	0.43	0.69	0.44	0.20	0.64	1.16	0.60
0.60	0.20	0.34	0.57	0.36	0.17	0.52	0.94	0.45
0.80	0.17	0.29	0.48	0.30	0.15	0.44	0.81	0.39
1.00	0.16	0.23	0.41	0.25	0.12	0.38	0.66	0.32
1.20	0.14	0.21	0.33	0.22	0.11	0.32	0.57	0.28
1.40	0.13	0.19	0.30	0.20	0.11	0.29	0.50	0.24
1.60	0.11	0.18	0.27	0.18	0.10	0.26	0.43	0.22
1.80	0.10	0.16	0.23	0.16	0.09	0.25	0.39	0.20
2.00	0.10	0.15	0.21	0.15	0.08	0.21	0.38	0.19

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.95	1.51	1.70	1.53	0.92	1.45	1.50	1.41
0.05	0.80	1.36	1.58	1.40	0.80	1.31	1.39	1.26
0.10	0.75	1.23	1.50	1.33	0.76	1.24	1.31	1.16
0.20	0.65	1.06	1.32	1.17	0.64	1.09	1.17	1.02
0.40	0.54	0.81	1.06	0.92	0.53	0.90	0.92	0.78
0.60	0.48	0.62	0.89	0.75	0.43	0.71	0.78	0.62
0.80	0.41	0.51	0.71	0.61	0.38	0.63	0.66	0.49
1.00	0.34	0.42	0.60	0.52	0.34	0.54	0.58	0.41
1.20	0.32	0.38	0.50	0.44	0.29	0.46	0.47	0.36
1.40	0.29	0.32	0.42	0.40	0.28	0.40	0.45	0.32
1.60	0.29	0.29	0.40	0.35	0.22	0.39	0.39	0.29
1.80	0.26	0.28	0.36	0.31	0.22	0.35	0.36	0.27
2.00	0.26	0.26	0.30	0.31	0.21	0.30	0.30	0.24

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.78	1.30	1.56	1.36	0.79	1.16	1.09	1.11
0.05	0.66	1.18	1.45	1.24	0.68	1.05	1.01	0.99
0.10	0.62	1.06	1.38	1.17	0.65	0.99	0.95	0.91
0.20	0.53	0.91	1.21	1.04	0.55	0.87	0.85	0.80
0.40	0.45	0.70	0.97	0.82	0.46	0.72	0.67	0.62
0.60	0.39	0.54	0.81	0.67	0.37	0.57	0.57	0.48
0.80	0.34	0.44	0.65	0.54	0.32	0.50	0.48	0.39
1.00	0.28	0.36	0.55	0.46	0.29	0.43	0.42	0.32
1.20	0.27	0.33	0.46	0.39	0.25	0.37	0.34	0.29
1.40	0.24	0.28	0.39	0.36	0.24	0.32	0.33	0.25
1.60	0.24	0.25	0.36	0.31	0.19	0.31	0.28	0.23
1.80	0.21	0.24	0.33	0.28	0.19	0.28	0.26	0.21
2.00	0.21	0.23	0.28	0.28	0.18	0.24	0.22	0.19

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.83	1.13	1.05	0.68	0.31	0.99	1.90	1.46
0.05	0.70	1.05	0.98	0.63	0.27	0.91	1.77	1.33
0.10	0.64	0.95	0.93	0.59	0.25	0.85	1.70	1.22
0.20	0.49	0.83	0.84	0.53	0.23	0.76	1.52	1.05
0.40	0.35	0.63	0.69	0.44	0.19	0.62	1.23	0.81
0.60	0.31	0.48	0.56	0.36	0.16	0.53	1.04	0.59
0.80	0.28	0.36	0.47	0.32	0.14	0.45	0.86	0.47
1.00	0.23	0.29	0.41	0.27	0.12	0.39	0.74	0.39
1.20	0.22	0.25	0.35	0.24	0.11	0.35	0.65	0.33
1.40	0.18	0.22	0.29	0.22	0.09	0.33	0.55	0.27
1.60	0.18	0.19	0.29	0.20	0.09	0.29	0.48	0.26
1.80	0.16	0.17	0.24	0.18	0.08	0.25	0.46	0.22
2.00	0.15	0.16	0.21	0.15	0.08	0.24	0.38	0.21

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.79	1.13	1.12	0.68	0.29	0.64	1.05	1.06
0.05	0.66	1.05	1.05	0.63	0.25	0.59	0.98	0.97
0.10	0.61	0.95	0.99	0.59	0.23	0.55	0.94	0.89
0.20	0.52	0.83	0.90	0.53	0.21	0.49	0.84	0.77
0.40	0.43	0.63	0.74	0.44	0.17	0.40	0.68	0.59
0.60	0.36	0.48	0.59	0.36	0.15	0.34	0.58	0.43
0.80	0.32	0.36	0.50	0.32	0.13	0.29	0.47	0.34
1.00	0.29	0.29	0.44	0.27	0.11	0.25	0.41	0.29
1.20	0.25	0.25	0.37	0.24	0.10	0.23	0.36	0.24
1.40	0.23	0.22	0.31	0.22	0.09	0.21	0.30	0.20
1.60	0.21	0.19	0.30	0.20	0.08	0.19	0.26	0.19
1.80	0.19	0.17	0.26	0.18	0.07	0.16	0.26	0.16
2.00	0.19	0.16	0.22	0.15	0.07	0.16	0.21	0.15

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.62	0.79	0.83	0.67	0.48	1.04	1.69	1.19
0.05	0.52	0.70	0.75	0.60	0.40	0.92	1.55	1.07
0.10	0.47	0.64	0.71	0.55	0.38	0.86	1.44	0.96
0.20	0.38	0.55	0.62	0.49	0.34	0.76	1.29	0.85
0.40	0.29	0.42	0.50	0.40	0.27	0.62	1.05	0.64
0.60	0.26	0.33	0.41	0.33	0.23	0.51	0.85	0.49
0.80	0.23	0.27	0.35	0.28	0.20	0.43	0.68	0.41
1.00	0.20	0.22	0.29	0.24	0.18	0.37	0.60	0.32
1.20	0.18	0.19	0.25	0.21	0.15	0.33	0.52	0.28
1.40	0.16	0.17	0.22	0.19	0.14	0.29	0.44	0.25
1.60	0.15	0.16	0.20	0.16	0.13	0.27	0.39	0.22
1.80	0.14	0.15	0.18	0.15	0.12	0.23	0.35	0.21
2.00	0.13	0.12	0.17	0.15	0.11	0.21	0.33	0.19

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.98	1.14	1.07	0.60	0.24	0.78	1.50	1.36
0.05	0.83	1.01	0.96	0.53	0.20	0.69	1.37	1.22
0.10	0.76	0.92	0.91	0.49	0.19	0.65	1.28	1.10
0.20	0.61	0.80	0.80	0.44	0.17	0.57	1.14	0.98
0.40	0.47	0.61	0.64	0.36	0.13	0.47	0.93	0.73
0.60	0.42	0.48	0.52	0.29	0.12	0.38	0.75	0.56
0.80	0.36	0.39	0.45	0.25	0.10	0.32	0.60	0.47
1.00	0.31	0.33	0.38	0.21	0.09	0.28	0.53	0.36
1.20	0.29	0.27	0.32	0.19	0.08	0.25	0.46	0.32
1.40	0.25	0.24	0.29	0.17	0.07	0.22	0.39	0.28
1.60	0.24	0.23	0.26	0.14	0.06	0.20	0.35	0.25
1.80	0.22	0.21	0.23	0.13	0.06	0.17	0.31	0.24
2.00	0.20	0.18	0.22	0.13	0.06	0.16	0.29	0.22

P/H	North	North east	East	South East	South	South west	West	North west
0.00	0.67	0.93	1.05	0.61	0.27	0.67	1.16	0.99
0.05	0.57	0.82	0.94	0.54	0.23	0.59	1.06	0.89
0.10	0.52	0.75	0.89	0.51	0.22	0.55	0.99	0.80
0.20	0.42	0.65	0.78	0.45	0.19	0.49	0.88	0.71
0.40	0.32	0.49	0.62	0.36	0.15	0.40	0.72	0.53
0.60	0.29	0.39	0.51	0.30	0.13	0.33	0.58	0.41
0.80	0.25	0.31	0.44	0.26	0.11	0.28	0.46	0.34
1.00	0.21	0.26	0.37	0.22	0.10	0.24	0.41	0.27
1.20	0.20	0.22	0.32	0.19	0.09	0.21	0.36	0.23
1.40	0.17	0.20	0.28	0.17	0.08	0.19	0.30	0.21
1.60	0.16	0.19	0.26	0.15	0.07	0.17	0.27	0.18
1.80	0.15	0.17	0.22	0.13	0.07	0.15	0.24	0.17
2.00	0.14	0.14	0.21	0.13	0.06	0.14	0.22	0.16

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.82	1.04	1.07	0.72	0.41	0.78	1.17	1.10
0.05	0.69	0.91	0.96	0.64	0.34	0.69	1.07	0.99
0.10	0.63	0.84	0.91	0.59	0.32	0.65	1.00	0.89
0.20	0.51	0.72	0.80	0.53	0.29	0.57	0.89	0.79
0.40	0.39	0.55	0.64	0.43	0.23	0.47	0.73	0.59
0.60	0.35	0.44	0.52	0.35	0.20	0.38	0.59	0.46
0.80	0.30	0.35	0.45	0.30	0.17	0.32	0.47	0.38
1.00	0.26	0.29	0.38	0.26	0.15	0.28	0.41	0.29
1.20	0.24	0.25	0.32	0.23	0.13	0.25	0.36	0.26
1.40	0.21	0.22	0.29	0.20	0.12	0.22	0.31	0.23
1.60	0.20	0.21	0.26	0.17	0.11	0.20	0.27	0.20
1.80	0.18	0.19	0.23	0.16	0.10	0.17	0.24	0.19
2.00	0.17	0.16	0.22	0.16	0.10	0.16	0.23	0.18

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.01	1.19	1.15	0.78	0.49	1.10	1.82	1.55
0.05	0.85	1.07	1.05	0.70	0.42	1.01	1.69	1.41
0.10	0.78	0.99	0.99	0.67	0.39	0.96	1.63	1.30
0.20	0.62	0.85	0.88	0.59	0.35	0.86	1.46	1.14
0.40	0.43	0.64	0.71	0.49	0.29	0.70	1.17	0.86
0.60	0.36	0.47	0.61	0.41	0.25	0.61	0.99	0.64
0.80	0.31	0.39	0.50	0.34	0.21	0.53	0.86	0.50
1.00	0.26	0.32	0.42	0.29	0.18	0.44	0.73	0.45
1.20	0.24	0.26	0.37	0.26	0.18	0.41	0.62	0.36
1.40	0.22	0.24	0.32	0.23	0.15	0.36	0.55	0.33
1.60	0.19	0.21	0.28	0.22	0.14	0.33	0.49	0.26
1.80	0.18	0.20	0.26	0.20	0.14	0.29	0.44	0.25
2.00	0.17	0.19	0.24	0.19	0.14	0.27	0.40	0.21

P/H	North	North east	East	South east	South	South west	West	North west
0.00	0.88	1.05	1.04	0.57	0.24	0.96	2.00	1.54
0.05	0.75	0.95	0.95	0.51	0.21	0.88	1.86	1.40
0.10	0.68	0.88	0.89	0.48	0.20	0.83	1.79	1.29
0.20	0.55	0.75	0.79	0.42	0.18	0.75	1.60	1.13
0.40	0.38	0.57	0.64	0.35	0.14	0.61	1.29	0.86
0.60	0.32	0.42	0.55	0.29	0.12	0.53	1.09	0.63
0.80	0.27	0.34	0.45	0.25	0.10	0.46	0.94	0.50
1.00	0.23	0.28	0.38	0.21	0.09	0.38	0.80	0.45
1.20	0.21	0.23	0.33	0.19	0.09	0.36	0.69	0.36
1.40	0.19	0.21	0.29	0.17	0.08	0.31	0.60	0.32
1.60	0.17	0.19	0.25	0.16	0.07	0.28	0.54	0.26
1.80	0.16	0.18	0.23	0.14	0.07	0.26	0.49	0.25
2.00	0.15	0.17	0.22	0.14	0.07	0.24	0.44	0.21

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.06	1.30	1.36	1.09	0.77	1.11	1.49	1.39
0.05	0.91	1.17	1.23	0.96	0.65	0.99	1.36	1.26
0.10	0.84	1.08	1.16	0.93	0.61	0.93	1.29	1.15
0.20	0.68	0.94	1.04	0.81	0.54	0.83	1.14	1.01
0.40	0.44	0.72	0.85	0.67	0.46	0.67	0.93	0.75
0.60	0.35	0.57	0.73	0.58	0.40	0.58	0.79	0.60
0.80	0.31	0.44	0.60	0.51	0.34	0.50	0.66	0.47
1.00	0.28	0.37	0.54	0.43	0.30	0.43	0.55	0.38
1.20	0.24	0.31	0.46	0.39	0.28	0.38	0.48	0.32
1.40	0.21	0.26	0.40	0.35	0.25	0.34	0.41	0.28
1.60	0.20	0.23	0.37	0.31	0.24	0.32	0.39	0.25
1.80	0.19	0.22	0.31	0.28	0.22	0.29	0.34	0.22
2.00	0.18	0.21	0.30	0.27	0.22	0.26	0.31	0.21

P/H	North	North east	East	South east	South	South west	West	North west
0.00	1.15	1.17	0.97	0.75	0.51	0.77	1.07	1.24
0.05	1.00	1.05	0.88	0.66	0.43	0.69	0.98	1.12
0.10	0.91	0.97	0.83	0.64	0.41	0.65	0.93	1.03
0.20	0.74	0.85	0.74	0.56	0.36	0.58	0.82	0.90
0.40	0.48	0.65	0.61	0.46	0.30	0.47	0.67	0.67
0.60	0.38	0.51	0.52	0.40	0.26	0.40	0.57	0.54
0.80	0.34	0.40	0.43	0.35	0.22	0.35	0.48	0.42
1.00	0.30	0.33	0.38	0.30	0.20	0.30	0.40	0.34
1.20	0.26	0.28	0.33	0.27	0.18	0.26	0.34	0.28
1.40	0.23	0.23	0.29	0.24	0.17	0.24	0.30	0.25
1.60	0.22	0.21	0.26	0.22	0.16	0.22	0.28	0.22
1.80	0.20	0.20	0.22	0.19	0.14	0.20	0.24	0.20
2.00	0.19	0.19	0.22	0.18	0.14	0.18	0.23	0.19

Explanatory information

There is little or no need for cooling at any time of the year in climate zone 8. Therefore, this clause does not apply in climate zone 8.
By referring to ‘glazing elements’, 13.3.3 require Total System U-Values and Total System SHGCs to be assessed for the combined effect of glass and frames. The measurement of these Total System U-Values and Total System SHGCs is specified in the Technical Protocols and Procedures Manual for Energy Rating of Fenestration by the Australian Fenestration Rating Council (AFRC) for glazing elements of representative size and arrangements.
Various assessors using AFRC procedures might refer to their published performance values by slightly different terms including ‘U Factor’ or ‘Uw’ for Total System U-Value or ‘SHGC’ for Total System SHGC. Such values can be used under 13.3.3 provided they measure the combined glass and frame performance according to AFRC requirements.
For the room factor, the solar heat gains to bedrooms and unconditioned areas have less impact on the cooling loads of dwellings than solar heat gains to a living area due to the different time of day that the rooms are occupied. Bedrooms are typically not occupied during the day when outdoor temperatures and solar heat gains are higher.
For the frame factor, the darker the window frame, the greater the solar heat gain through the frame. Radiation gains from windows are multiplied by this factor.
For the floor factor, this is only applied for dwellings with a floor in contact with the ground. If a room has a tiled surface or is a polished slab, radiation gains in this room are multiplied by this factor.

New for 2022

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13.3.4

Shading

2019: 3.12.2.2

Where shading is required to comply with 13.3.2 or 13.3.3, it must—

be provided by an external permanent projection, such as a verandah, balcony, fixed canopy, eaves, shading hood or carport, which—
1. extends horizontally on both sides of the glazing for a distance greater than or equal to the projection distance P in Figure 13.3.2b; or
2. provide the equivalent shading to (i) with a reveal or the like; or
be provided by an external shading device, such as a shutter, blind, vertical or horizontal building screen with blades, battens or slats, which—
1. is capable of restricting at least 80% of the summer solar radiation; and
2. if adjustable, is readily operated either manually, mechanically or electronically by the building occupants.

Explanatory information

Shading devices can include fixed louvres, shading screens and other types of perforated or fixed angle slatted shades. However, such devices need to be designed for the climate and latitude to ensure that summer sun penetration is restricted, while winter sun access is achieved. Winter access refers to the availability of winter solar gains to offset conducted heat losses.
The impact of shading is assessed with respect to the solar heat gain of the glazing. The requirements of 13.3.2 and 13.3.3 consider solar heat gain to be either beneficial or detrimental to the energy efficiency of a building based on seasonal variation (winter/summer), climate zone, orientation and P/H. Higher P/H values are more beneficial in minimising summer solar heat gain where as lower P/H values are more beneficial in allowing winter access.
Gutters can only be considered as providing shading if attached to a shading projection such as a verandah, fixed canopy, eaves, shading hood, balcony or the like.
Shading devices can be either attached or located adjacent to the building. For example, a free-standing lattice screen may be considered to provide shading to glazing if it complies with 13.3.4(b).
An adjustable shading device in 13.3.4(b)(ii) should be readily operated from a safe location or platform that does not require ladders, rigging, harnessing, or the like.

2019: 3.12.2.2

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Part 13.3 External glazing

13.3.1

Application of Part 13.3

2019: 3.12.2

State variations

13.3.2

External glazing — winter

2019: 3.12.2.1

Explanatory information

State variations

13.3.3

External glazing — summer

New for 2022

Explanatory information

State variations

13.3.4

Shading

2019: 3.12.2.2

Explanatory information

State variations

Type of factor	Factor for a floor in direct contact with the ground	Factor for a suspended floor
Room factor (R_S) for a bedroom and a room which is not a conditioned space	0.60	0.57
Level factor (L_S) for all other floor levels	1.20	1.35
Frame factor (F_S) for frames with a solar absorptance of ≤ 0.40	0.91	0.87
Frame factor (F_S) for frames with a solar absorptance of > 0.40 to < 0.68	1.00	1.00
Frame factor (F_S) for frames with a solar absorptance of ≥ 0.68	1.15	1.21
Floor factor (for tiled or vinyl covered floor) (H_S)	0.75	Not applicable

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Part 13.3 External glazing

13.3.1 Application of Part 13.3 2019: 3.12.2

State variations

13.3.2 External glazing — winter 2019: 3.12.2.1

State variations

13.3.3 External glazing — summer New for 2022

State variations

13.3.4 Shading 2019: 3.12.2.2

State variations

13.3.1

Application of Part 13.3

2019: 3.12.2

13.3.2

External glazing — winter

2019: 3.12.2.1

13.3.3

External glazing — summer

New for 2022

13.3.4

Shading

2019: 3.12.2.2