Once work on a building has progressed above 7,315 mm the means of egress is by permanent or temporary stairs meeting Part 22: temporary stairs kept safe until permanent ones are in and at least 900 mm wide, skeleton steel stairs fitted with secured full-width wooden treads, permanent stairs installed as soon as conditions permit, stairs and landings designed for a 4.8 kPa live load with a safety factor of four, landings at most 3.7 m apart and the handrail, width and tread requirements of sections 22.5 and 22.6. The employer provides a ladder wherever workers must work at an elevated or sub-level area with no other safe recognised access and removes defective ladders from service. Ladder users set inclined portable ladders with the base no more than a quarter of the length out unless secured, inspect before use, report unsafe conditions and follow the use rules of sections 23.2 and 23.3. Wooden ladders are of good straight-grained lumber and not painted, step ladders are limited to 6,096 mm and built as section 23.5 requires, fixed ladders are securely fastened with a safety rail or cage beyond 6,096 mm, extension ladders have at most three sections and 18,288 mm fully extended, single-section ladders do not exceed 9,144 mm, and on construction sites the maximum ascent by ladder is 9,144 mm with double lines beyond that.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.