Section 106: Taxiway strips

(1) A taxiway, other than an aircraft stand taxilane, shall be included in a strip. (2) A taxiway strip shall extend symmetrically on each side of the center line of the taxiway throughout the length of the taxiway to not less than the distance from the center line set out in Table 2, column 11. (3) The taxiway strip shall provide an area clear of objects which may endanger taxiing aeroplane taking into consideration the location and design of drains, on a taxiway strip to prevent damage to an aircraft accidentally running off a taxiway. (4) Where open air or covered storm water conveyances are installed in a taxiway strips, consideration shall be given such that their structure does not extend above the surrounding ground in order not to be considered as an obstacle. (5) The aerodrome operator shall give particular attention to the design and maintenance of open-air storm water conveyance to prevent wildlife attraction such as birds and where required, the water conveyance shall be covered with a net. (6) Where considered necessary for proper drainage, an openair storm water conveyance shall be allowed only in the non-graded portion of a taxiway strip and shall be placed as far as practicable from the taxiway. (7) The aerodrome rescue and fire-fighting procedure (RFF) shall take into account the location of open air water conveyances within the non-graded portion of a taxiway strip. (8) The center portion of a taxiway strip shall provide a graded area to a distance from the center line of the taxiway of not less than - (a) 10.25m where the Outer Main Gear Wheel Span is up to but not including 4.5m; (b) 11m where the Outer Main Gear Wheel Span is 4.5m up to but not including 6m; (c) 12.50m where the Outer Main Gear Wheel Span is 6m up to but not including 9m; (d) 18.50m where the OMGWS is 9m up to but not including 15m, where the code letter is D; (e) 19m where the OMGWS is 9m up to but not including 15m, where the code letter is E; and (f) 22m where the OMGWS is 9 m up to but not including 15m, where the code letter is F. (9) The surface of the strip shall be flushed at the edge of the taxiway or shoulder, if provided, and the graded portion shall not have an upward transverse slope exceeding- (a) 2.5 percent for strips where the code letter is C, D, E or F; and (b) 3 percent for strips of taxiways where the code letter is A or B; the upward slope being measured with reference to the transverse slope of the adjacent taxiway surface and not the horizontal and the downward transverse slope shall not exceed 5 percent measured with reference to the horizontal. (10) The transverse slopes on any portion of a taxiway strip beyond that to be graded shall not exceed an upward or downward slope of 5 percent as measured in the direction away from the taxiway.