Technical Booklet D Structure·Page 81·Table 4C.11
Table 4C.11 Maximum height of parapet walls
This table specifies the maximum height limits for parapet walls based on their thickness, with different limits for configurations where combined thickness (t1 + t2) is not greater than 200 mm versus greater than 200 mm but not greater than 250 mm.
Wall type: Thickness of wall (mm) / Maximum height of parapet H (mm). Where t1 + t2 is not greater than 200: t = 150 mm / 600 mm; t = 215 mm / 860 mm; t = 190 mm / 760 mm. Where t1 + t2 is greater than 200 but not greater than 250: 860 mm. Note: "t" should not be greater than "T". (specified thickness from Table 4C.10) – 5 mm.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet D - Structure.pdf