ONLINE VERSIONStairs and laddersK1 See para 1.36Circular handrail Non-circular handrail 32mm to 50mm 50mm wide and 39mm diameter deep having rounded edges50mm to 75mm15mm min.radius50mm min.50mm max.Non-circular handrail 50 mm wide and 39 mm deep having rounder edges50mm min.Ramped orstepped accessDiagram 1.13 Handrail designGuarding of stairsFor all buildings1.38 Design the guarding to be the height shown in Diagram 3.1.1.39 In a building that may be used by children under five years of age, construct the guarding to a flight of stairs to do both of the following.a. Prevent children being held fast by the guarding: ensure that a 100mm sphere cannot pass through any openings in the guarding.b. Prevent children from readily being able to climb the guarding.16 t K, 2013 edition t K, 2013 edition t K, 2013 edition Approved Document K, 2013 edition Building Regulations 2010ONLINE VERSIONONLINE VERSIONONLINE VERSION