When Häfele present its popular CPD seminar on Architectural Ironmongery one of the most common questions is regarding the limited choice of levers that can be used to comply with BS8300 recommendations, most people assume that this has to be a standard return to door lever, see image 1.According to Häfele, this was never the case. The latest version of BS8300:2009 has much clearer guidance on lever specification and shows 4 examples of type that will meet this criteria.
They key design indicators are:
1. Hand grip zone of at least 95 mm (applies to all types of lever handle)
2. Hand grip zone at least 45 mm from face of door
3. Lever diameter at least 19 mm
4.lock/latch backset at least 54 mm from door edge
A wide range of door levers can be used which allow the architect to meet the requirements of BS8300 and whilst still using attractive designs of door furniture, a few examples from the Häfele range are shown here.