8.5.5 Curved Runway Beams

Difficulty may be experienced in negotiating small radius bends (typically less than 2 or 3 metres). Manufacturers state recommendations on the minimum radius bend their equipment can negotiate. Articulated trolleys will negotiate smaller radii than rigid trolleys with the same wheel centres. A two wheel trolley will negotiate any radius of curve that can be practically manufactured on a runway beam provided the wheel flanges do not foul the beam flange on the inside of the curve.