For #childsafetyweek here’s a reminder that Approved Document K (England) provides recommendations for the minimum height of windows (800mm) above floor level and guarding for windows where they fall below these levels.
Architectural trends are for deeper windows or french windows with low level cills into their designs. The cills to these windows can provide platforms to aid climbability by children.
As such, the recommendations for guarding height to windows may not be appropriate to afford the required protection and to ensure the safety of the occupants and hence achieve compliance with the functional requirements.
According to Childata, 50% of four year old children can step up 410mm, and 3% can step up 550mm. Any cill height lower than 600mm may therefore be considered readily climbable by children. The same source shows only 5% of four year old children are taller than 1200mm so most would be fairly stable standing on an upstand if a minimum guard height of 700mm were to be maintained.
Worth remembering when you are sat designing this week.
For more info download the BCA Guidance notes or ring and speak with one of our technical staff.