Wall Height Requirements for Direct Mounting (Artira)

From Garaventapedia

Wall Height Requirements for Direct Mounting

Stair Angle	Platform Sizes
	800x 1220mm* (31 1/2" x 48")*		800 x 1050mm (31 1/2" x 41 3/8")		800 x 900mm (31 1/2" x 35 3/8")		700 x 750mm (27 1/2" x 29 1/2")
	mm	in	mm	in	mm	in	mm	in
20	1155	45 1/2	1125	44 1/4	1095	43 1/8	1055	41 1/2
25	1230	48 3/8	1190	46 7/8	1155	45 1/2	1100	43 1/4
30	1315	51 3/4	1270	50	1225	48 1/4	1155	45 1/2
35	1410	55 1/2	1355	53 3/8	1300	51 1/8	1215	47 7/8
40	1520	59 7/8	1450	57 1/8	1385	54 1/2	1285	50 5/8
45	1645	64 3/4	1560	61 3/8	1485	58 1/2	1365	53 3/4

Note: For prevention of concrete breakout, these required wall heights include 100mm (3 7/8") of clearance from the top hole of the strut to the top of a concrete wall.