K4 PROTECTION FROM COLLISION WITH OPEN WINDOWS, ETC. The Requirement K4 This Approved Document deals with the following Requirements from Part K of Schedule 1 to the Building Regulations 2000. Requirement Limits on application Protection from collision with open windows, etc. K4. Provision shall be made to prevent people moving in or Requirement K4 does not apply to dwellings. about the building from colliding with open windows, skylights or ventilators. ONLINEVERSION Where necessary, reference should be madeto Approved Document B: Fire safety, for guidance on clear dimensions of escape routes; and Approved Document M: Access and facilities for disabled people, for guidance on hazards on access routes. Note: Attention is drawn to the Workplace (Health, Safety and Welfare) Regulations 1992 Compliance with Building Regulation requirement K4 would, in accordance with Section 23(3) of the Health and Safety at Work, etc. Act 1974 , prevent the service of an improvement notice with regard to the requirements for projecting windows, skylights and ventilators covered by regulation 15(2) of the Workplace (Health, Safety and Welfare) Regulations 1992 . ONLINEVERSION GuidancePerformance In the Secretary of State’s view, requirement K4 will be met if windows, skylights and ventilators can be left open without danger of people colliding with them. This could be achieved by: a. installing windows, etc. so that projecting parts are kept away from people moving in and around the building; or b. installing features which guide people moving in or about the building away from any open window, skylight or ventilator. In special cases, such as spaces used only for maintenance purposes, greater care can be expected by those gaining access and it would be reasonable that less demanding provisions could satisfy the requirement. ONLINEVERSIONProtection from collision Approved Document K14