Apex Masonry - Interlink Retaining Wall Systems

Interlink Retaining Wall Systems - Block Calculator

The main body of the Interlink calculator is designed to give you the number of full blocks you require for your retaining wall.

Find the length of your retaining wall in green, and then find the matching height in yellow. Where they meet gives you the number of Full Blocks required.

The second last row of the table gives you the number of half height blocks required (needed for walls over 600mm high only). The bottom row in the table gives you the number of caps required.

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Wall Height in mm
1000	14	27	41	54	68	81	95	108	122	135
900	12	24	36	48	60	72	84	96	108	120
800	11	21	32	42	53	63	74	84	95	105
700	9	18	27	36	45	54	63	72	81	90
600	8	15	23	30	38	45	53	60	68	75
500	6	12	18	24	30	36	42	48	54	60
400	5	9	14	18	23	27	32	36	41	45
300	3	6	9	12	15	18	21	24	27	30
200	2	3	5	6	8	9	11	12	14	15
100	0	0	0	0	0	0	0	0	0	0
Wall length in Metres	1	2	3	4	5	6	7	8	9	10

Half Heights Required	3	6	9	12	15	18	21	24	27	30
Caps Required	5	10	15	20	25	30	35	40	45	50

Notes: If no half heights are required multiply square metres of your retaining wall by 15 to give you the number of full blocks required. Remember to add 1 split end per course per end to finish off your wall neatly. See Tips Laying Blocks.