December 14, 2011
New DHF guide helps specifiers judge long-term performance of doorsets
[dropcap]T[/dropcap]he Door and Hardware Federation (DHF) has published a new specification for enhanced lifetime performance of hinged and pivot doorsets.
The DHF, which represents the UK’s door, hardware and architectural ironmongery sectors, developed the Technical Specification TS 006 so that its members could prove to specifiers the long-term performance and fitness for purpose of their doorsets.
The specification was developed jointly with Chiltern Dynamics, the testing and certification organisation, and Exova Warringtonfire, which tests a broad range of doors, windows and hardware products.
Using knowledge gained from Chiltern Dynamics’ CDTM01 test programme, as well as Exova Warringtonfire’s experience of steel doorset testing, the TS 006 DHF Enhanced Specification for Doorsets has increased some of the performance requirements called up in the published British and European standards.
The test programme covered high-performance hinged doorsets made from all materials including steel, composite and timber. The specification for doorsets includes a wide range of performance criteria, including:
- Vertical load
- Static torsion
- Soft and heavy impact
- Hard body impact
- Slamming shut
- Slamming open
- Closure against obstruction
- Resistance to jarring and vibration
- Abusive force on handles
- Operating forces
- Cycling (1,000,000 opening and closing cycles).
Performance against these characteristics allows the door to be classified in terms of its duty. ‘Severe’ is the most demanding classification and relates to the wear and tear typical of cross-corridor locations in hospitals, schools or large offices.
Said DHF general manager and secretary Michael Skelding:[quote]There is a need for precise performance criteria to help specifiers judge whether a doorset is fit for purpose in situations of long term heavy use. Our new TS 006 specification for enhanced lifetime performance of doorsets will help building owners, contractors, specifiers and buildings/facilities managers identify the most appropriate doorset for their particular application.[/quote]
Technical manager of Chiltern International Fire/Chiltern Dynamics Vincent Kerrigan added:[quote]Demand from specifiers for proof of fitness for purpose is raising the bar for the whole industry. It is refreshing, too, that here we have an example of two highly respected UKAS-accredited test laboratories working together to assist the DHF to develop a significant test standard for this sector.[/quote]