Technical Booklet H Stairs Ramps Guarding and Protection from Impact·Page 39·4.20
Intermediate landings for multiple ramps
Where three or more ramps form a ramped access route, intermediate landings between each ramp must have minimum dimensions of 1800 mm unobstructed length and 1800 mm surface width.
Where the ramped access or circulation route consists of three or more ramps, the intermediate landings between each ramp should have an unobstructed length of not less than 1800 mm and a surface width of not less than 1800 mm.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet H - Stairs Ramps Guarding and Protection from Impact.pdf