GM1 ADR-DSN.K.495 Landing direction indicator

The landing ‘T’ may be constructed of wood or other light material and its dimensions may correspond to those shown in Figure K-1. It may be painted white or orange. The landing ‘T’ should be mounted on a cement concrete pedestal adequately reinforced with steel bars to avoid cracks resulting from unequal settlement. The surface of the pedestal should be finished smooth with a steel trowel and coated with paint of appropriate colour. The colour of the pedestal should be chosen to contrast with the colour of the landing ‘T’. Before fastening the landing ‘T’ base to the concrete pedestal, the mounting bolts should be checked for correct spacing. The landing ‘T’ should be assembled and mounted in accordance with the manufacturer’s installation instructions. It should be free to move about a vertical axis so that it can be set in any direction. Where required for use at night, the landing ‘T’ should either be illuminated or outlined by white lights.