BS EN 81-70:2018 pdf download.Safety rules for the construction and installation of lifts - Particular applications for passenger and goods passenger lift Part 70: Accessibility to lifts for persons including persons with disability.
5 Safety requirements and/or protective measures
5.1 General
5.1.1 Passenger and goods passenger lifts shall comply with the safety requirements and/or protective measures of the following clauses. In addition, passenger and goods passenger lifts shall be designed according to the principles of EN ISO 12100 for hazards relevant hut not significant which are not dealt with by this document (e.g sharp edges).
The requirements of EN 81-20 and EN 81-28 apply with additional requirements elaborated below.
5.1.2 Where luminance contrast between adaccnt surfaces is required the difference in light retlectance value (1.1W) shall comply with Table 2.
Light reflectance values under viewing angles according to Table 2 taking into account lighting conditions and reflections of ceilings, walls and floors may be determined by a black and white photo of a sample with an adjacent LRV scale and comparing sLirfaces of the sample with the LRV scale. Alternatively, by placing a LRV scale against the surface of interest, a reasonable match can be ldentltled.
NOTE On shiny and direct reflective surfaces, unfavourable reflections can reduce luminance contrast determined by LRV.mcthod, Light colour tones for ceiling and wall surfaces, diffuse reflective materials and a wide light distribution prevent disturbing reflections on the controls. For further guidance on contrast see ISO 21542:2011, B.7.2.
5.1 General
5.1.1 Passenger and goods passenger lifts shall comply with the safety requirements and/or protective measures of the following clauses. In addition, passenger and goods passenger lifts shall be designed according to the principles of EN ISO 12100 for hazards relevant hut not significant which are not dealt with by this document (e.g sharp edges).
The requirements of EN 81-20 and EN 81-28 apply with additional requirements elaborated below.
5.1.2 Where luminance contrast between adaccnt surfaces is required the difference in light retlectance value (1.1W) shall comply with Table 2.
Light reflectance values under viewing angles according to Table 2 taking into account lighting conditions and reflections of ceilings, walls and floors may be determined by a black and white photo of a sample with an adjacent LRV scale and comparing sLirfaces of the sample with the LRV scale. Alternatively, by placing a LRV scale against the surface of interest, a reasonable match can be ldentltled.
NOTE On shiny and direct reflective surfaces, unfavourable reflections can reduce luminance contrast determined by LRV.mcthod, Light colour tones for ceiling and wall surfaces, diffuse reflective materials and a wide light distribution prevent disturbing reflections on the controls. For further guidance on contrast see ISO 21542:2011, B.7.2.
