Technical Booklet H Stairs Ramps Guarding and Protection from Impact·Page 30·3.27
Handrail height and guarding integration
Handrails must be positioned between 900 mm and 1000 mm above the pitch line and may form the top of guarding.
Handrails should be at a height between 900 mm and 1000 mm measured vertically above the pitch line. Handrails may form the top of guarding.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet H - Stairs Ramps Guarding and Protection from Impact.pdf