Brick Dimensions - course heights and lengths

Based on a standard brick size of 230 x 110 x 76.

No. of bricks	Length mm	Opening mm	Height mm
1	230	250	86
1.5	350	370
2	470	490	172
2.5	590	610
3	710	730	257
3.5	830	850
4	950	970	343
4.5	1070	1090
5	1190	1210	429
5.5	1310	1330
6	1430	1450	514
6.5	1550	1570
7	1670	1690	600
7.5	1790	1810
8	1910	1930	686
8.5	2030	2050
9	2150	2170	772
905	2270	2290
10	2390	2410	857
10.5	2510	2530
11	2630	2650	943
11.5	2750	2770
12	2870	2890	1029
12.5	2990	3010
13	3110	3130	1114
13.5	3230	3250
14	3350	3370	1200
14.5	3470	3490
15	3590	3610	1286
15.5	3710	3730
16	3830	3850	1372
16.5	3950	3970
17	4070	4090	1457
17.5	4190	4210
18	4310	4330	1543
18.5	4430	4450
19	4550	4570	1629
19.5	4670	4690
20	4790	4810	1714
20.5	4910	4930
21	5030	5050	1800
21.5	5150	5170
22	5270	5290	1886
22.5	5390	5410
23	5510	5530	1972
23.5	5630	5650
24	5750	5770	2057
24.5	5870	5890
25	5990	6010	2143
25.5	6110	Openings no longer practicable
26	6230		2229
26.5	6350
27	6470		2314
27.5	6590
28	6710		2400

Based on a modular brick size of 290 x 90 x 90. All dimensions can be extrapolated from the following table -

No. of bricks per course	Wall length mm	Opening size mm	Height mm
1	290	310	100
1 1/3	390	410	200
1 2/3	490	510	300
2	590	610	400
	etc	etc	etc

Based on a block size of 400 x 200 units (various widths).

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