Section 6.2 Moving Walks
The sides and undersides of the moving walk truss or group of adjacent trusses in a single wellway shall be enclosed in materials defined as either noncombustible or limited-combustible by the building code or NFPA 101, whichever is applicable (see Part 9). Means provided for adequate ventilation of the driving machine and control spaces, when included in the truss enclosure area, shall be permitted.
(a) The balustrade on the tread side shall have no areas or moldings depressed or raised more than 6.4 mm (0.25 in.) from the parent surface. Such areas or moldings shall have all boundary edges beveled or rounded.
(b) The balustrade shall be totally closed except
(1) where the handrail enters the newel base (see 18.104.22.168.3).
(2) gaps between interior panels shall not be wider than 5 mm (0.19 in.). The edges shall be rounded or beveled.
(c) The width between the balustrade interior panels in the direction of travel shall not be changed.
(a) ANSI Z97.1 or 16 CFR Part 1201
(b) CAN2-12.1, CAN2-12.il, or CAN2-12.12, except that there shall be no requirement for the panels to be transparent
Plastic bonded to basic supporting panels is not required to conform to these requirements.
(a) The width from the vertical face of the interior panel to the vertical plane of the skirt panel shall not exceed 150 mm (6 in.).
(b) The angle between the surface of the deck and the plane of the nose line of the treadway shall be not less than 20 deg nor more than 30 deg.
(c) A horizontal section shall be permitted immediately adjacent to the interior panel. It shall be not greater than 35 mm (1.25 in.).
(a) the clearance between the top surface of the treadway and the underside of the balustrade shall not exceed 6 mm (0.25 in.)
(b) the balustrade shall be vertical and smooth for at least 25 mm (1 in.) including the 6 mm (0.25 in.) clearance above the top of the tread
(a) The clearance between each side of the treadway and the adjacent skirt panel shall be not more than 6 mm (0.25 in.).
(b) The height of the skirt above the top of the tread shall be at least 25 mm (1 in.), measured vertically.
(c) The skirt panel design and installation shall not permit deflection more than 1.6 mm (0.06 in.) under a force of 670 N (150 lbf).
(d) The exposed surface of the skirt panels adjacent to the tread shall be smooth.
(e) Skirt Deflection Test and Marking/Labeling. Each skirt panel design shall be tested for deflection with load per (b) as described in 8.3.15. This panel shall be marked with the part number or identifying mark and be marked/labeled with the following: "Replacement shall meet OEM and A17.1/B44 Code requirements."
(a) On high deck balustrades, a solid guard shall be provided in the intersection of the angle of the outside balustrade deck and ceiling or soffit under either of the following conditions:
(1) where the clearance between the outside edge of the deck and the ceiling or soffit is 300 mm (12 in.) or less
(2) where the projected intersection of the outside deck and the ceiling or soffit is 600 mm (24 in.) or less from the centerline of the handrail
(b) On low deck balustrades, a solid guard shall be provided to protect the intersection formed by the top of the handrail and the plane of the ceiling or soffit where the centerline of the handrail is 350 mm (14 in.) or less from the ceiling or soffit.
(c) The vertical edge of the guard shall be a minimum of 350 mm (14 in.) in length.
(d) The moving walk side of the vertical face of the guard shall be flush with the face of the wellway.
(e) The exposed edge of the guard shall present a minimum width of 25 mm (1 in.) and a minimum radius of 12 mm (0.5 in.).
(f) Guards made of glass or plastic shall conform to the requirements of 22.214.171.124.3. See also Nonmandatory Appendix I, Figure I-5.
(a) A barricade to restrict access to the outer deck on low deck exterior balustrades shall be provided on each moving walk when the exterior deck is greater than 915 mm (36 in.) above the floor in any part of its travel and the exterior deck width exceeds 125 mm (5 in.). On parallel abutting units, this protection shall be provided where the combined outer deck width exceeds 125 mm (5 in.). The barricade shall extend to a height that is nominally 100 mm (4 in.) below the top of the handrail.
(b) The barricades shall be located wherever the exterior deck exceeds the 915 mm (36 in.) height above the floor.
(c) On parallel adjacent moving walks, where the common low deck between adjacent interior panels exceeds 400 mm (16 in.), deck barricades should be spaced evenly along the treadway at not greater than 4.6 m (15 ft) measured on a line parallel to the direction of travel.
(d) Barricades made of glass or plastic shall conform to the requirements of 126.96.36.199.3.
All exposed barricade attachment fastener heads shall be the tamper-resistant type.
(a) Pallet frames and treads, excluding their attachments or inserts, shall be metal, except that magnesium alloys shall not be used; or the materials, in their end-use configuration, shall have a flame spread index of 0 to 50, based on the tests conducted in accordance with the requirements of ASTM E84, UL 723, NFPA 255, or CAN/ULC-S102.2, whichever is applicable (see Part 9).
(b) Nonmetallic attachments and inserts (excluding wheels) shall be classified 94 HB or better, in accordance with ANSI/UL 94.
(c) Pallet treads shall afford a secure foothold.
Table 188.8.131.52 Treadway Width
|Maximum Treadway, |
Slope at Any Point on Treadway,
|Maximum Moving Walk Treadway Width, mm (in.)|
|Maximum Treadway Speed, |
0.45 m/s (90 ft/min)
|Treadway Speed, |
Above 0.45 m/s (90 ft/min)
to 0.7 m/s (140 ft/min)
|Treadway Speed, |
Above 0.7 m/s (140 ft/min)
to 0.9 m/s (180 ft/min)
|0 to 4||Unrestricted||1525 (60)||1020 (40)|
|Above 4 to 8||1020 (40)||1020 (40)||1020 (40)|
|Above 8 to 12||1020 (40)||1020 (40)||Not permitted|
(a) There shall be a combplate, to which combs shall be fastened, at the entrance and at the exit of every moving walk.
(b) The comb teeth shall be meshed with and set into the slots in the tread surfaces so that the points of the teeth are always below the upper surface of the treads.
(c) Combplates shall be adjustable vertically. Sections forming the comb teeth shall be readily replaceable.
(d) The comb section, combplate, and landing plate assemblies shall not make contact with the pallet or belt treadway surfaces when a weight of 160 kg (350 lb) is applied to any area 200 mm × 300 mm (8 in. × 12 in.) centered on the plates with the 300 mm (12 in.) dimension parallel to the direction of travel.